diff --git a/poc/avr_usbload/commandline/opendevice.c b/poc/avr_usbload/commandline/opendevice.c index 137f50c..d2a7b69 100644 --- a/poc/avr_usbload/commandline/opendevice.c +++ b/poc/avr_usbload/commandline/opendevice.c @@ -1,71 +1,86 @@ -/* Name: opendevice.c - * Project: V-USB host-side library - * Author: Christian Starkjohann - * Creation Date: 2008-04-10 - * Tabsize: 4 - * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH - * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) - * This Revision: $Id: opendevice.c 740 2009-04-13 18:23:31Z cs $ +/* + * Name: opendevice.c Project: V-USB host-side library Author: Christian + * Starkjohann Creation Date: 2008-04-10 Tabsize: 4 Copyright: (c) 2008 by + * OBJECTIVE DEVELOPMENT Software GmbH License: GNU GPL v2 (see License.txt), + * GNU GPL v3 or proprietary (CommercialLicense.txt) This Revision: $Id: + * opendevice.c 740 2009-04-13 18:23:31Z cs $ */ /* -General Description: -The functions in this module can be used to find and open a device based on -libusb or libusb-win32. -*/ + * General Description: The functions in this module can be used to find and + * open a device based on libusb or libusb-win32. + */ #include #include "opendevice.h" -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ #define MATCH_SUCCESS 1 #define MATCH_FAILED 0 #define MATCH_ABORT -1 -/* private interface: match text and p, return MATCH_SUCCESS, MATCH_FAILED, or MATCH_ABORT. */ -static int _shellStyleMatch(char *text, char *p) +/* + * private interface: match text and p, return MATCH_SUCCESS, MATCH_FAILED, or + * MATCH_ABORT. + */ +static int _shellStyleMatch(char *text, char *p) { -int last, matched, reverse; + int last, + matched, + reverse; - for(; *p; text++, p++){ - if(*text == 0 && *p != '*') + for (; *p; text++, p++) { + if (*text == 0 && *p != '*') return MATCH_ABORT; - switch(*p){ + switch (*p) { case '\\': - /* Literal match with following character. */ + /* + * Literal match with following character. + */ p++; - /* FALLTHROUGH */ + /* + * FALLTHROUGH + */ default: - if(*text != *p) + if (*text != *p) return MATCH_FAILED; continue; case '?': - /* Match anything. */ + /* + * Match anything. + */ continue; case '*': - while(*++p == '*') - /* Consecutive stars act just like one. */ + while (*++p == '*') + /* + * Consecutive stars act just like one. + */ continue; - if(*p == 0) - /* Trailing star matches everything. */ + if (*p == 0) + /* + * Trailing star matches everything. + */ return MATCH_SUCCESS; - while(*text) - if((matched = _shellStyleMatch(text++, p)) != MATCH_FAILED) + while (*text) + if ((matched = _shellStyleMatch(text++, p)) != MATCH_FAILED) return matched; return MATCH_ABORT; case '[': reverse = p[1] == '^'; - if(reverse) /* Inverted character class. */ + if (reverse) /* Inverted character class. */ p++; matched = MATCH_FAILED; - if(p[1] == ']' || p[1] == '-') - if(*++p == *text) + if (p[1] == ']' || p[1] == '-') + if (*++p == *text) matched = MATCH_SUCCESS; - for(last = *p; *++p && *p != ']'; last = *p) - if (*p == '-' && p[1] != ']' ? *text <= *++p && *text >= last : *text == *p) + for (last = *p; *++p && *p != ']'; last = *p) + if (*p == '-' && p[1] != ']' ? *text <= *++p + && *text >= last : *text == *p) matched = MATCH_SUCCESS; - if(matched == reverse) + if (matched == reverse) return MATCH_FAILED; continue; } @@ -73,110 +88,174 @@ int last, matched, reverse; return *text == 0; } -/* public interface for shell style matching: returns 0 if fails, 1 if matches */ +/* + * public interface for shell style matching: returns 0 if fails, 1 if matches + */ static int shellStyleMatch(char *text, char *pattern) { - if(pattern == NULL) /* NULL pattern is synonymous to "*" */ + if (pattern == NULL) /* NULL pattern is synonymous to "*" */ return 1; return _shellStyleMatch(text, pattern) == MATCH_SUCCESS; } -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ -int usbGetStringAscii(usb_dev_handle *dev, int index, char *buf, int buflen) +int usbGetStringAscii(usb_dev_handle * dev, int index, char *buf, int buflen) { -char buffer[256]; -int rval, i; + char buffer[256]; + int rval, + i; - if((rval = usb_get_string_simple(dev, index, buf, buflen)) >= 0) /* use libusb version if it works */ + if ((rval = usb_get_string_simple(dev, index, buf, buflen)) >= 0) /* use + * libusb + * version + * if + * it + * works + */ return rval; - if((rval = usb_control_msg(dev, USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR, (USB_DT_STRING << 8) + index, 0x0409, buffer, sizeof(buffer), 5000)) < 0) + if ((rval = + usb_control_msg(dev, USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR, + (USB_DT_STRING << 8) + index, 0x0409, buffer, + sizeof(buffer), 5000)) < 0) return rval; - if(buffer[1] != USB_DT_STRING){ + if (buffer[1] != USB_DT_STRING) { *buf = 0; return 0; } - if((unsigned char)buffer[0] < rval) - rval = (unsigned char)buffer[0]; + if ((unsigned char) buffer[0] < rval) + rval = (unsigned char) buffer[0]; rval /= 2; - /* lossy conversion to ISO Latin1: */ - for(i=1;i buflen) /* destination buffer overflow */ + /* + * lossy conversion to ISO Latin1: + */ + for (i = 1; i < rval; i++) { + if (i > buflen) /* destination buffer overflow */ break; - buf[i-1] = buffer[2 * i]; - if(buffer[2 * i + 1] != 0) /* outside of ISO Latin1 range */ - buf[i-1] = '?'; + buf[i - 1] = buffer[2 * i]; + if (buffer[2 * i + 1] != 0) /* outside of ISO Latin1 range */ + buf[i - 1] = '?'; } - buf[i-1] = 0; - return i-1; + buf[i - 1] = 0; + return i - 1; } -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ -int usbOpenDevice(usb_dev_handle **device, int vendorID, char *vendorNamePattern, int productID, char *productNamePattern, char *serialNamePattern, FILE *printMatchingDevicesFp, FILE *warningsFp) +int usbOpenDevice(usb_dev_handle ** device, int vendorID, + char *vendorNamePattern, int productID, + char *productNamePattern, char *serialNamePattern, + FILE * printMatchingDevicesFp, FILE * warningsFp) { -struct usb_bus *bus; -struct usb_device *dev; -usb_dev_handle *handle = NULL; -int errorCode = USBOPEN_ERR_NOTFOUND; + struct usb_bus *bus; + struct usb_device *dev; + usb_dev_handle *handle = NULL; + int errorCode = USBOPEN_ERR_NOTFOUND; usb_find_busses(); usb_find_devices(); - for(bus = usb_get_busses(); bus; bus = bus->next){ - for(dev = bus->devices; dev; dev = dev->next){ /* iterate over all devices on all busses */ - if((vendorID == 0 || dev->descriptor.idVendor == vendorID) - && (productID == 0 || dev->descriptor.idProduct == productID)){ - char vendor[256], product[256], serial[256]; - int len; - handle = usb_open(dev); /* we need to open the device in order to query strings */ - if(!handle){ + for (bus = usb_get_busses(); bus; bus = bus->next) { + for (dev = bus->devices; dev; dev = dev->next) { /* iterate over + * all devices + * on all + * busses */ + if ((vendorID == 0 || dev->descriptor.idVendor == vendorID) + && (productID == 0 || dev->descriptor.idProduct == productID)) { + char vendor[256], + product[256], + serial[256]; + int len; + handle = usb_open(dev); /* we need to open the device in order + * to query strings */ + if (!handle) { errorCode = USBOPEN_ERR_ACCESS; - if(warningsFp != NULL) - fprintf(warningsFp, "Warning: cannot open VID=0x%04x PID=0x%04x: %s\n", dev->descriptor.idVendor, dev->descriptor.idProduct, usb_strerror()); + if (warningsFp != NULL) + fprintf(warningsFp, + "Warning: cannot open VID=0x%04x PID=0x%04x: %s\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, usb_strerror()); continue; } - /* now check whether the names match: */ + /* + * now check whether the names match: + */ len = vendor[0] = 0; - if(dev->descriptor.iManufacturer > 0){ - len = usbGetStringAscii(handle, dev->descriptor.iManufacturer, vendor, sizeof(vendor)); + if (dev->descriptor.iManufacturer > 0) { + len = + usbGetStringAscii(handle, dev->descriptor.iManufacturer, + vendor, sizeof(vendor)); } - if(len < 0){ + if (len < 0) { errorCode = USBOPEN_ERR_ACCESS; - if(warningsFp != NULL) - fprintf(warningsFp, "Warning: cannot query manufacturer for VID=0x%04x PID=0x%04x: %s\n", dev->descriptor.idVendor, dev->descriptor.idProduct, usb_strerror()); - }else{ + if (warningsFp != NULL) + fprintf(warningsFp, + "Warning: cannot query manufacturer for VID=0x%04x PID=0x%04x: %s\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, usb_strerror()); + } else { errorCode = USBOPEN_ERR_NOTFOUND; - /* printf("seen device from vendor ->%s<-\n", vendor); */ - if(shellStyleMatch(vendor, vendorNamePattern)){ + /* + * printf("seen device from vendor ->%s<-\n", vendor); + */ + if (shellStyleMatch(vendor, vendorNamePattern)) { len = product[0] = 0; - if(dev->descriptor.iProduct > 0){ - len = usbGetStringAscii(handle, dev->descriptor.iProduct, product, sizeof(product)); + if (dev->descriptor.iProduct > 0) { + len = + usbGetStringAscii(handle, + dev->descriptor.iProduct, + product, sizeof(product)); } - if(len < 0){ + if (len < 0) { errorCode = USBOPEN_ERR_ACCESS; - if(warningsFp != NULL) - fprintf(warningsFp, "Warning: cannot query product for VID=0x%04x PID=0x%04x: %s\n", dev->descriptor.idVendor, dev->descriptor.idProduct, usb_strerror()); - }else{ + if (warningsFp != NULL) + fprintf(warningsFp, + "Warning: cannot query product for VID=0x%04x PID=0x%04x: %s\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, + usb_strerror()); + } else { errorCode = USBOPEN_ERR_NOTFOUND; - /* printf("seen product ->%s<-\n", product); */ - if(shellStyleMatch(product, productNamePattern)){ + /* + * printf("seen product ->%s<-\n", product); + */ + if (shellStyleMatch(product, productNamePattern)) { len = serial[0] = 0; - if(dev->descriptor.iSerialNumber > 0){ - len = usbGetStringAscii(handle, dev->descriptor.iSerialNumber, serial, sizeof(serial)); + if (dev->descriptor.iSerialNumber > 0) { + len = + usbGetStringAscii(handle, + dev->descriptor. + iSerialNumber, serial, + sizeof(serial)); } - if(len < 0){ + if (len < 0) { errorCode = USBOPEN_ERR_ACCESS; - if(warningsFp != NULL) - fprintf(warningsFp, "Warning: cannot query serial for VID=0x%04x PID=0x%04x: %s\n", dev->descriptor.idVendor, dev->descriptor.idProduct, usb_strerror()); + if (warningsFp != NULL) + fprintf(warningsFp, + "Warning: cannot query serial for VID=0x%04x PID=0x%04x: %s\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, + usb_strerror()); } - if(shellStyleMatch(serial, serialNamePattern)){ - if(printMatchingDevicesFp != NULL){ - if(serial[0] == 0){ - fprintf(printMatchingDevicesFp, "VID=0x%04x PID=0x%04x vendor=\"%s\" product=\"%s\"\n", dev->descriptor.idVendor, dev->descriptor.idProduct, vendor, product); - }else{ - fprintf(printMatchingDevicesFp, "VID=0x%04x PID=0x%04x vendor=\"%s\" product=\"%s\" serial=\"%s\"\n", dev->descriptor.idVendor, dev->descriptor.idProduct, vendor, product, serial); + if (shellStyleMatch(serial, serialNamePattern)) { + if (printMatchingDevicesFp != NULL) { + if (serial[0] == 0) { + fprintf(printMatchingDevicesFp, + "VID=0x%04x PID=0x%04x vendor=\"%s\" product=\"%s\"\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, + vendor, product); + } else { + fprintf(printMatchingDevicesFp, + "VID=0x%04x PID=0x%04x vendor=\"%s\" product=\"%s\" serial=\"%s\"\n", + dev->descriptor.idVendor, + dev->descriptor.idProduct, + vendor, product, serial); } - }else{ + } else { break; } } @@ -188,16 +267,19 @@ int errorCode = USBOPEN_ERR_NOTFOUND; handle = NULL; } } - if(handle) /* we have found a deice */ + if (handle) /* we have found a deice */ break; } - if(handle != NULL){ + if (handle != NULL) { errorCode = 0; *device = handle; } - if(printMatchingDevicesFp != NULL) /* never return an error for listing only */ + if (printMatchingDevicesFp != NULL) /* never return an error for listing + * only */ errorCode = 0; return errorCode; } -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ diff --git a/poc/avr_usbload/commandline/snesuploader.c b/poc/avr_usbload/commandline/snesuploader.c index 4bd7df5..db278b5 100644 --- a/poc/avr_usbload/commandline/snesuploader.c +++ b/poc/avr_usbload/commandline/snesuploader.c @@ -7,14 +7,12 @@ */ /* -General Description: -This is the host-side driver for the custom-class example device. It searches -the USB for the LEDControl device and sends the requests understood by this -device. -This program must be linked with libusb on Unix and libusb-win32 on Windows. -See http://libusb.sourceforge.net/ or http://libusb-win32.sourceforge.net/ -respectively. -*/ + * General Description: This is the host-side driver for the custom-class + * example device. It searches the USB for the LEDControl device and sends the + * requests understood by this device. This program must be linked with libusb + * on Unix and libusb-win32 on Windows. See http://libusb.sourceforge.net/ or + * http://libusb-win32.sourceforge.net/ respectively. + */ #define READ_BUFFER_SIZE 1024 @@ -33,108 +31,95 @@ respectively. #include "../usbconfig.h" /* device's VID/PID and names */ -void -dump_packet (uint32_t addr, uint32_t len, uint8_t * packet) +void dump_packet(uint32_t addr, uint32_t len, uint8_t * packet) { - uint16_t i, j; + uint16_t i, + j; uint16_t sum = 0; uint8_t clear = 0; - for (i = 0; i < len; i += 16) - { + for (i = 0; i < len; i += 16) { - sum = 0; - for (j = 0; j < 16; j++) - { - sum += packet[i + j]; - } - if (!sum) - { - clear = 1; - continue; - } - if (clear) - { - printf ("*\n"); - clear = 0; - } - printf ("%08x:", addr + i); - for (j = 0; j < 16; j++) - { - printf (" %02x", packet[i + j]); - } - printf (" |"); - for (j = 0; j < 16; j++) - { - if (packet[i + j] >= 33 && packet[i + j] <= 126) - printf ("%c", packet[i + j]); - else - printf ("."); - } - printf ("|\n"); - } + sum = 0; + for (j = 0; j < 16; j++) { + sum += packet[i + j]; + } + if (!sum) { + clear = 1; + continue; + } + if (clear) { + printf("*\n"); + clear = 0; + } + printf("%08x:", addr + i); + for (j = 0; j < 16; j++) { + printf(" %02x", packet[i + j]); + } + printf(" |"); + for (j = 0; j < 16; j++) { + if (packet[i + j] >= 33 && packet[i + j] <= 126) + printf("%c", packet[i + j]); + else + printf("."); + } + printf("|\n"); + } } -uint16_t -crc_xmodem_update (uint16_t crc, uint8_t data) +uint16_t crc_xmodem_update(uint16_t crc, uint8_t data) { int i; crc = crc ^ ((uint16_t) data << 8); - for (i = 0; i < 8; i++) - { - if (crc & 0x8000) - crc = (crc << 1) ^ 0x1021; - else - crc <<= 1; - } + for (i = 0; i < 8; i++) { + if (crc & 0x8000) + crc = (crc << 1) ^ 0x1021; + else + crc <<= 1; + } return crc; } -uint16_t -do_crc (uint8_t * data, uint16_t size) +uint16_t do_crc(uint8_t * data, uint16_t size) { uint16_t crc = 0; uint16_t i; - for (i = 0; i < size; i++) - { - crc = crc_xmodem_update (crc, data[i]); - } + for (i = 0; i < size; i++) { + crc = crc_xmodem_update(crc, data[i]); + } return crc; } -uint16_t -do_crc_update (uint16_t crc, uint8_t * data, uint16_t size) +uint16_t do_crc_update(uint16_t crc, uint8_t * data, uint16_t size) { uint16_t i; for (i = 0; i < size; i++) - crc = crc_xmodem_update (crc, data[i]); + crc = crc_xmodem_update(crc, data[i]); return crc; } -static void -usage (char *name) +static void usage(char *name) { - fprintf (stderr, "usage:\n"); - fprintf (stderr, " %s upload filename.. upload\n", name); + fprintf(stderr, "usage:\n"); + fprintf(stderr, " %s upload filename.. upload\n", name); } -int -main (int argc, char **argv) +int main(int argc, char **argv) { usb_dev_handle *handle = NULL; - const unsigned char rawVid[2] = { USB_CFG_VENDOR_ID }, rawPid[2] = - { + const unsigned char rawVid[2] = { USB_CFG_VENDOR_ID }, rawPid[2] = { USB_CFG_DEVICE_ID}; - char vendor[] = { USB_CFG_VENDOR_NAME, 0 }, product[] = - { + char vendor[] = { USB_CFG_VENDOR_NAME, 0 }, product[] = { USB_CFG_DEVICE_NAME, 0}; - int cnt, vid, pid; + int cnt, + vid, + pid; int cnt_crc = 0; uint8_t *read_buffer; uint8_t *crc_buffer; @@ -146,126 +131,114 @@ main (int argc, char **argv) uint8_t bank = 0; FILE *fp; - usb_init (); - if (argc < 2) - { /* we need at least one argument */ - usage (argv[0]); - exit (1); - } + usb_init(); + if (argc < 2) { /* we need at least one argument */ + usage(argv[0]); + exit(1); + } /* * compute VID/PID from usbconfig.h so that there is a central source * of information */ vid = rawVid[1] * 256 + rawVid[0]; pid = rawPid[1] * 256 + rawPid[0]; - /* The following function is in opendevice.c: */ - if (usbOpenDevice (&handle, vid, vendor, pid, product, NULL, NULL, NULL) != 0) - { - fprintf (stderr, "Could not find USB device \"%s\" with vid=0x%x pid=0x%x\n", product, vid, pid); - exit (1); - } - printf ("Open USB device \"%s\" with vid=0x%x pid=0x%x\n", product, vid, pid); - if (strcasecmp (argv[1], "upload") == 0) - { - if (argc < 3) - { /* we need at least one argument */ - usage (argv[0]); - exit (1); - } - fp = fopen (argv[2], "r"); - if (fp == NULL) - { - fprintf (stderr, "Cannot open file %s ", argv[2]); - exit (1); - } - read_buffer = (unsigned char *) malloc (READ_BUFFER_SIZE); - crc_buffer = (unsigned char *) malloc (BUFFER_CRC); - memset (crc_buffer, 0, BUFFER_CRC); - addr = 0x000000; + /* + * The following function is in opendevice.c: + */ + if (usbOpenDevice(&handle, vid, vendor, pid, product, NULL, NULL, NULL) != + 0) { + fprintf(stderr, + "Could not find USB device \"%s\" with vid=0x%x pid=0x%x\n", + product, vid, pid); + exit(1); + } + printf("Open USB device \"%s\" with vid=0x%x pid=0x%x\n", product, vid, + pid); + if (strcasecmp(argv[1], "upload") == 0) { + if (argc < 3) { /* we need at least one argument */ + usage(argv[0]); + exit(1); + } + fp = fopen(argv[2], "r"); + if (fp == NULL) { + fprintf(stderr, "Cannot open file %s ", argv[2]); + exit(1); + } + read_buffer = (unsigned char *) malloc(READ_BUFFER_SIZE); + crc_buffer = (unsigned char *) malloc(BUFFER_CRC); + memset(crc_buffer, 0, BUFFER_CRC); + addr = 0x000000; - usb_control_msg (handle, - USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, USB_UPLOAD_INIT, 0, 0, NULL, 0, 5000); + usb_control_msg(handle, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, + USB_UPLOAD_INIT, 0, 0, NULL, 0, 5000); - while ((cnt = fread (read_buffer, READ_BUFFER_SIZE, 1, fp)) > 0) - { - for (step = 0; step < READ_BUFFER_SIZE; step += SEND_BUFFER_SIZE) - { - addr_lo = addr & 0xffff; - addr_hi = (addr >> 16) & 0xff; - usb_control_msg (handle, - USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, - USB_UPLOAD_ADDR, addr_hi, addr_lo, - (char *) read_buffer + step, SEND_BUFFER_SIZE, 5000); + while ((cnt = fread(read_buffer, READ_BUFFER_SIZE, 1, fp)) > 0) { + for (step = 0; step < READ_BUFFER_SIZE; step += SEND_BUFFER_SIZE) { + addr_lo = addr & 0xffff; + addr_hi = (addr >> 16) & 0xff; + usb_control_msg(handle, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | + USB_ENDPOINT_OUT, USB_UPLOAD_ADDR, addr_hi, + addr_lo, (char *) read_buffer + step, + SEND_BUFFER_SIZE, 5000); #if 0 - dump_packet (addr, SEND_BUFFER_SIZE, read_buffer + step); + dump_packet(addr, SEND_BUFFER_SIZE, read_buffer + step); #endif - addr += SEND_BUFFER_SIZE; - } - - memcpy (crc_buffer + cnt_crc, read_buffer, READ_BUFFER_SIZE); - cnt_crc += READ_BUFFER_SIZE; - if (cnt_crc >= BANK_SIZE) - { - crc = do_crc (crc_buffer, BANK_SIZE); - printf ("Addr: 0x%06x Bank: 0x%02x HiAddr: 0x%02x LoAddr: 0x%04x Crc: 0x%04x\n", addr, bank, - addr_hi, addr_lo, crc); - memset (crc_buffer, 0, BUFFER_CRC); - bank++; - cnt_crc = 0; - } + addr += SEND_BUFFER_SIZE; } - cnt = usb_control_msg (handle, - USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, - USB_CRC, addr_hi, addr_lo, NULL, 0, 5000); - - if (cnt < 1) - { - if (cnt < 0) - { - fprintf (stderr, "USB error: %s\n", usb_strerror ()); - } - else - { - fprintf (stderr, "only %d bytes received.\n", cnt); - } + memcpy(crc_buffer + cnt_crc, read_buffer, READ_BUFFER_SIZE); + cnt_crc += READ_BUFFER_SIZE; + if (cnt_crc >= BANK_SIZE) { + crc = do_crc(crc_buffer, BANK_SIZE); + printf + ("Addr: 0x%06x Bank: 0x%02x HiAddr: 0x%02x LoAddr: 0x%04x Crc: 0x%04x\n", + addr, bank, addr_hi, addr_lo, crc); + memset(crc_buffer, 0, BUFFER_CRC); + bank++; + cnt_crc = 0; } - } - else if (strcasecmp (argv[1], "crc") == 0) - { - /* - if(argc < 2){ - usage(argv[0]); - exit(1); - } - */ - addr = 0x000000; - addr_lo = addr & 0xffff; - addr_hi = (addr >> 16) & 0xff; - printf ("Request CRC for Addr: 0x%06x\n", addr); + } + cnt = usb_control_msg(handle, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | + USB_ENDPOINT_OUT, USB_CRC, addr_hi, addr_lo, NULL, + 0, 5000); - cnt = usb_control_msg (handle, - USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, - USB_CRC_ADDR, addr_hi, addr_lo, NULL, (1 << 15) / 4, 5000); - if (cnt < 1) - { - if (cnt < 0) - { - fprintf (stderr, "USB error: %s\n", usb_strerror ()); - } - else - { - fprintf (stderr, "only %d bytes received.\n", cnt); - } + if (cnt < 1) { + if (cnt < 0) { + fprintf(stderr, "USB error: %s\n", usb_strerror()); + } else { + fprintf(stderr, "only %d bytes received.\n", cnt); } - } - else - { - usage (argv[0]); - exit (1); - } - usb_close (handle); + } + } else if (strcasecmp(argv[1], "crc") == 0) { + /* + * if(argc < 2){ usage(argv[0]); exit(1); } + */ + addr = 0x000000; + addr_lo = addr & 0xffff; + addr_hi = (addr >> 16) & 0xff; + printf("Request CRC for Addr: 0x%06x\n", addr); + + cnt = usb_control_msg(handle, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | + USB_ENDPOINT_OUT, USB_CRC_ADDR, addr_hi, addr_lo, + NULL, (1 << 15) / 4, 5000); + + if (cnt < 1) { + if (cnt < 0) { + fprintf(stderr, "USB error: %s\n", usb_strerror()); + } else { + fprintf(stderr, "only %d bytes received.\n", cnt); + } + } + } else { + usage(argv[0]); + exit(1); + } + usb_close(handle); return 0; } diff --git a/poc/avr_usbload/crc.c b/poc/avr_usbload/crc.c index 7f8eaa7..c7e0100 100644 --- a/poc/avr_usbload/crc.c +++ b/poc/avr_usbload/crc.c @@ -1,17 +1,16 @@ #include -#include +#include #include "crc.h" #include "uart.h" extern FILE uart_stdout; -uint16_t crc_xmodem_update (uint16_t crc, uint8_t data) +uint16_t crc_xmodem_update(uint16_t crc, uint8_t data) { int i; - crc = crc ^ ((uint16_t)data << 8); - for (i=0; i<8; i++) - { + crc = crc ^ ((uint16_t) data << 8); + for (i = 0; i < 8; i++) { if (crc & 0x8000) crc = (crc << 1) ^ 0x1021; else @@ -21,23 +20,22 @@ uint16_t crc_xmodem_update (uint16_t crc, uint8_t data) return crc; } -uint16_t do_crc(uint8_t * data,uint16_t size) +uint16_t do_crc(uint8_t * data, uint16_t size) { - uint16_t crc =0; - uint16_t i; - for (i=0; i -#include +#include #include "debug.h" #include "uart.h" @@ -7,36 +7,38 @@ extern FILE uart_stdout; -void dump_packet(uint32_t addr,uint32_t len,uint8_t *packet){ - uint16_t i,j; - uint16_t sum = 0; - uint8_t clear=0; - - for (i=0;i=33 && packet[i+j]<=126 ) - printf("%c", packet[i+j]); - else - printf("."); - } - printf("|\n"); - } +void dump_packet(uint32_t addr, uint32_t len, uint8_t * packet) +{ + uint16_t i, + j; + uint16_t sum = 0; + uint8_t clear = 0; + + for (i = 0; i < len; i += 16) { + + sum = 0; + for (j = 0; j < 16; j++) { + sum += packet[i + j]; + } + if (!sum) { + clear = 1; + continue; + } + if (clear) { + printf("*\n"); + clear = 0; + } + printf("%08lx:", addr + i); + for (j = 0; j < 16; j++) { + printf(" %02x", packet[i + j]); + } + printf(" |"); + for (j = 0; j < 16; j++) { + if (packet[i + j] >= 33 && packet[i + j] <= 126) + printf("%c", packet[i + j]); + else + printf("."); + } + printf("|\n"); + } } diff --git a/poc/avr_usbload/main.c b/poc/avr_usbload/main.c index cad8bdf..43f11ef 100644 --- a/poc/avr_usbload/main.c +++ b/poc/avr_usbload/main.c @@ -1,13 +1,14 @@ #include #include -#include /* for sei() */ -#include /* for _delay_ms() */ +#include /* for sei() */ +#include /* for _delay_ms() */ #include -#include /* required by usbdrv.h */ +#include /* required by usbdrv.h */ #include "usbdrv.h" -#include "oddebug.h" /* This is also an example for using debug macros */ -#include "requests.h" /* The custom request numbers we use */ +#include "oddebug.h" /* This is also an example for using debug + * macros */ +#include "requests.h" /* The custom request numbers we use */ #include "uart.h" #include "sram.h" #include "debug.h" @@ -21,137 +22,149 @@ extern FILE uart_stdout; -uint8_t read_buffer[BUFFER_SIZE]; -uint32_t req_addr = 0; -uint32_t req_size; -uint8_t req_bank; -uint32_t req_bank_size; -uint8_t req_state = REQ_IDLE; -uint8_t rx_remaining = 0; -uint8_t tx_remaining = 0; -uint16_t sync_errors = 0; -uint8_t tx_buffer[32]; -uint8_t data_buffer[4]; -uint32_t addr; +uint8_t read_buffer[BUFFER_SIZE]; +uint32_t req_addr = 0; +uint32_t req_size; +uint8_t req_bank; +uint32_t req_bank_size; +uint8_t req_state = REQ_IDLE; +uint8_t rx_remaining = 0; +uint8_t tx_remaining = 0; +uint16_t sync_errors = 0; +uint8_t tx_buffer[32]; +uint8_t data_buffer[4]; +uint32_t addr; -void crc_check_memory(uint32_t top_addr){ - uint16_t crc = 0; +void crc_check_memory(uint32_t top_addr) +{ + uint16_t crc = 0; uint32_t addr; - req_bank = 0; - for (addr=0x000000; addr < top_addr; addr+=BUFFER_SIZE) { - sram_read_buffer(addr,read_buffer,BUFFER_SIZE); - crc = do_crc_update(crc,read_buffer,BUFFER_SIZE); - if (addr && addr%32768 == 0){ - printf("crc_check_memory: req_bank: 0x%x Addr: 0x%lx CRC: %x\n",req_bank,addr,crc); + req_bank = 0; + for (addr = 0x000000; addr < top_addr; addr += BUFFER_SIZE) { + sram_read_buffer(addr, read_buffer, BUFFER_SIZE); + crc = do_crc_update(crc, read_buffer, BUFFER_SIZE); + if (addr && addr % 32768 == 0) { + printf("crc_check_memory: req_bank: 0x%x Addr: 0x%lx CRC: %x\n", + req_bank, addr, crc); req_bank++; - crc = 0; - } + crc = 0; + } } } -void crc_check_memory_range(uint32_t start_addr,uint32_t size){ - uint16_t crc = 0; +void crc_check_memory_range(uint32_t start_addr, uint32_t size) +{ + uint16_t crc = 0; uint32_t addr; - req_bank = 0; - for (addr=start_addr; addr < start_addr + size; addr+=BUFFER_SIZE) { - sram_read_buffer(addr,read_buffer,BUFFER_SIZE); - crc = do_crc_update(crc,read_buffer,BUFFER_SIZE); - } + req_bank = 0; + for (addr = start_addr; addr < start_addr + size; addr += BUFFER_SIZE) { + sram_read_buffer(addr, read_buffer, BUFFER_SIZE); + crc = do_crc_update(crc, read_buffer, BUFFER_SIZE); + } tx_buffer[0] = crc & 0xff; tx_buffer[1] = (crc >> 8) & 0xff; - printf("crc_check_memory_range: Addr: 0x%lx CRC: %x\n",addr,crc); + printf("crc_check_memory_range: Addr: 0x%lx CRC: %x\n", addr, crc); } -usbMsgLen_t usbFunctionSetup(uchar data[8]){ - - usbRequest_t *rq = (void *)data; +usbMsgLen_t usbFunctionSetup(uchar data[8]) +{ + + usbRequest_t *rq = (void *) data; uint8_t ret_len = 0; - if(rq->bRequest == USB_UPLOAD_INIT){ - req_bank =0; - rx_remaining=0; - req_bank_size= 1 << rq->wValue.word; - sync_errors=0; - printf("USB_UPLOAD_INIT: bank size %li\n",req_bank_size); - }else if(rq->bRequest == USB_UPLOAD_ADDR){ /* echo -- used for reliability tests */ + if (rq->bRequest == USB_UPLOAD_INIT) { + req_bank = 0; + rx_remaining = 0; + req_bank_size = 1 << rq->wValue.word; + sync_errors = 0; + printf("USB_UPLOAD_INIT: bank size %li\n", req_bank_size); + } else if (rq->bRequest == USB_UPLOAD_ADDR) { /* echo -- used for + * reliability tests */ req_state = REQ_UPLOAD; req_addr = rq->wValue.word; req_addr = req_addr << 16; req_addr = req_addr | rq->wIndex.word; - if (rx_remaining){ + if (rx_remaining) { sync_errors++; - printf("USB_UPLOAD_ADDR: Out of sync Addr=0x%lx remain=%i packet=%i sync_error=%i\n",req_addr,rx_remaining,rq->wLength.word,sync_errors ); - ret_len=0; - } - rx_remaining = rq->wLength.word; + printf + ("USB_UPLOAD_ADDR: Out of sync Addr=0x%lx remain=%i packet=%i sync_error=%i\n", + req_addr, rx_remaining, rq->wLength.word, sync_errors); + ret_len = 0; + } + rx_remaining = rq->wLength.word; ret_len = 0xff; - if (req_addr && req_addr % req_bank_size== 0){ - printf("USB_UPLOAD_ADDR: req_bank: 0x%x Addr: 0x%08lx \n",req_bank,req_addr); + if (req_addr && req_addr % req_bank_size == 0) { + printf("USB_UPLOAD_ADDR: req_bank: 0x%x Addr: 0x%08lx \n", + req_bank, req_addr); req_bank++; - } - ret_len=0xff; - }else if(rq->bRequest == USB_DOWNLOAD_INIT){ + } + ret_len = 0xff; + } else if (rq->bRequest == USB_DOWNLOAD_INIT) { printf("USB_DOWNLOAD_INIT\n"); - }else if(rq->bRequest == USB_DOWNLOAD_ADDR){ + } else if (rq->bRequest == USB_DOWNLOAD_ADDR) { printf("USB_DOWNLOAD_ADDR\n"); - }else if(rq->bRequest == USB_CRC){ + } else if (rq->bRequest == USB_CRC) { req_addr = rq->wValue.word; req_addr = req_addr << 16; req_addr = req_addr | rq->wIndex.word; - printf("USB_CRC: Addr 0x%lx \n", req_addr); + printf("USB_CRC: Addr 0x%lx \n", req_addr); cli(); crc_check_memory(req_addr); sei(); - }else if(rq->bRequest == USB_CRC_ADDR){ + } else if (rq->bRequest == USB_CRC_ADDR) { req_addr = rq->wValue.word; req_addr = req_addr << 16; req_addr = req_addr | rq->wIndex.word; - printf("USB_CRC_ADDR: Addr: 0x%lx Size: %i\n", req_addr,rq->wLength.word); + printf("USB_CRC_ADDR: Addr: 0x%lx Size: %i\n", req_addr, + rq->wLength.word); req_size = rq->wLength.word; req_size = req_size << 2; tx_remaining = 2; - printf("USB_CRC_ADDR: Addr: 0x%lx Size: %li\n", req_addr,req_size); + printf("USB_CRC_ADDR: Addr: 0x%lx Size: %li\n", req_addr, req_size); cli(); - //crc_check_memory_range(req_addr,req_size); + // crc_check_memory_range(req_addr,req_size); sei(); - ret_len=2; + ret_len = 2; } - + usbMsgPtr = data_buffer; - return ret_len; /* default for not implemented requests: return no data back to host */ + return ret_len; /* default for not implemented requests: return + * no data back to host */ } -uint8_t usbFunctionWrite(uint8_t *data, uint8_t len) +uint8_t usbFunctionWrite(uint8_t * data, uint8_t len) { - if (len > rx_remaining){ - printf("usbFunctionWrite more data than expected remain: %i len: %i\n",rx_remaining,len); - len = rx_remaining; - } - if (req_state==REQ_UPLOAD){ - + if (len > rx_remaining) { + printf("usbFunctionWrite more data than expected remain: %i len: %i\n", + rx_remaining, len); + len = rx_remaining; + } + if (req_state == REQ_UPLOAD) { + rx_remaining -= len; - #if 1 - printf("usbFunctionWrite addr: 0x%08lx len: %i rx_remaining=%i\n",req_addr,len,rx_remaining); - #endif +#if 1 + printf("usbFunctionWrite addr: 0x%08lx len: %i rx_remaining=%i\n", + req_addr, len, rx_remaining); +#endif cli(); - sram_copy(req_addr,data,len); + sram_copy(req_addr, data, len); sei(); - req_addr +=len; + req_addr += len; } return len; } -uint8_t usbFunctionRead(uint8_t *data, uint8_t len) +uint8_t usbFunctionRead(uint8_t * data, uint8_t len) { uint8_t i; - if(len > tx_remaining) + if (len > tx_remaining) len = tx_remaining; tx_remaining -= len; - #if 1 - printf("usbFunctionRead len=%i tx_remaining=%i \n",len,tx_remaining); - #endif +#if 1 + printf("usbFunctionRead len=%i tx_remaining=%i \n", len, tx_remaining); +#endif for (i = 0; i < len; i++) { *data = tx_buffer[len]; data++; @@ -159,7 +172,9 @@ uint8_t usbFunctionRead(uint8_t *data, uint8_t len) return len; } -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ int main(void) { @@ -168,27 +183,30 @@ int main(void) uart_init(); stdout = &uart_stdout; sram_init(); - printf("SRAM Init\n"); - spi_init(); - printf("SPI Init\n"); + printf("SRAM Init\n"); + spi_init(); + printf("SPI Init\n"); usbInit(); - printf("USB Init\n"); - usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */ - printf("USB disconnect\n"); + printf("USB Init\n"); + usbDeviceDisconnect(); /* enforce re-enumeration, do this while + * interrupts are disabled! */ + printf("USB disconnect\n"); i = 10; - while(--i){ /* fake USB disconnect for > 250 ms */ + while (--i) { /* fake USB disconnect for > 250 ms */ wdt_reset(); _delay_ms(1); } usbDeviceConnect(); - printf("USB connect\n"); + printf("USB connect\n"); sei(); - printf("USB poll\n"); - for(;;){ /* main event loop */ + printf("USB poll\n"); + for (;;) { /* main event loop */ wdt_reset(); usbPoll(); } return 0; } -/* ------------------------------------------------------------------------- */ +/* + * ------------------------------------------------------------------------- + */ diff --git a/poc/avr_usbload/sram.c b/poc/avr_usbload/sram.c index ad0d81d..0c15e8e 100644 --- a/poc/avr_usbload/sram.c +++ b/poc/avr_usbload/sram.c @@ -1,5 +1,5 @@ #include -#include +#include #include #include "sram.h" @@ -8,150 +8,165 @@ void spi_init(void) { - /* Set MOSI and SCK output, all others input */ - SPI_DIR |= ((1<>16)); - spi_master_transmit((uint8_t)(addr>>8)); - spi_master_transmit((uint8_t)(addr>>0)); + spi_master_transmit((uint8_t) (addr >> 16)); + spi_master_transmit((uint8_t) (addr >> 8)); + spi_master_transmit((uint8_t) (addr >> 0)); - LATCH_PORT |= (1<>16)); - spi_master_transmit((uint8_t)(addr>>8)); - spi_master_transmit((uint8_t)(addr>>0)); + spi_master_transmit((uint8_t) (addr >> 16)); + spi_master_transmit((uint8_t) (addr >> 8)); + spi_master_transmit((uint8_t) (addr >> 0)); - LATCH_PORT |= (1<>16)); - spi_master_transmit((uint8_t)(addr>>8)); - spi_master_transmit((uint8_t)(addr>>0)); + spi_master_transmit((uint8_t) (addr >> 16)); + spi_master_transmit((uint8_t) (addr >> 8)); + spi_master_transmit((uint8_t) (addr >> 0)); - LATCH_PORT |= (1<> $(MAKEFILE).dep + +datatestfile14k.raw: + dd if=/dev/urandom of=datatestfile14k.raw bs=1 count=14336 + +datatestfile512.raw: + dd if=/dev/urandom of=datatestfile512.raw bs=1 count=512 + +test/test.hex: + $(MAKE) -C test test.hex + +uploadtest: datatestfile14k.raw datatestfile512.raw + $(AVRDUDE) -p $(AVRDUDE_MCU) -c usbasp -P usb -U flash:w:datatestfile14k.raw -U eeprom:w:datatestfile512.raw + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U flash:v:datatestfile14k.raw -U eeprom:v:datatestfile512.raw + +-include $(MAKEFILE).dep diff --git a/tools/usbload/avr.mk b/tools/usbload/avr.mk new file mode 100644 index 0000000..dd6961c --- /dev/null +++ b/tools/usbload/avr.mk @@ -0,0 +1,99 @@ +# Programmer used for In System Programming +ISP_PROG = dapa +# device the ISP programmer is connected to +ISP_DEV = /dev/parport0 +# Programmer used for serial programming (using the bootloader) +SERIAL_PROG = avr109 +# device the serial programmer is connected to +SERIAL_DEV = /dev/ttyS0 + +# programs +CC = avr-gcc +OBJCOPY = avr-objcopy +OBJDUMP = avr-objdump +AS = avr-as +CP = cp +RM = rm -f +AVRDUDE = avrdude +AVRDUDE_BAUDRATE = 19200 +SIZE = avr-size + +-include $(CURDIR)/config.mk + +# flags for avrdude +ifeq ($(MCU),atmega8) + AVRDUDE_MCU=m8 +endif +ifeq ($(MCU),atmega48) + AVRDUDE_MCU=m48 +endif +ifeq ($(MCU),atmega88) + AVRDUDE_MCU=m88 +endif +ifeq ($(MCU),atmega168) + AVRDUDE_MCU=m168 +endif + +AVRDUDE_FLAGS += -p $(AVRDUDE_MCU) -b $(AVRDUDE_BAUDRATE) + +# flags for the compiler +CFLAGS += -g -Os -finline-limit=800 -mmcu=$(MCU) -DF_CPU=$(F_CPU) -std=gnu99 +ASFLAGS += -g -mmcu=$(MCU) -DF_CPU=$(F_CPU) + +# flags for the linker +LDFLAGS += -mmcu=$(MCU) + +ifneq ($(DEBUG),) + CFLAGS += -Wall -W -Wchar-subscripts -Wmissing-prototypes + CFLAGS += -Wmissing-declarations -Wredundant-decls + CFLAGS += -Wstrict-prototypes -Wshadow -Wbad-function-cast + CFLAGS += -Winline -Wpointer-arith -Wsign-compare + #CFLAGS += -Wunreachable-code -Wdisabled-optimization -Werror + CFLAGS += -Wunreachable-code -Wdisabled-optimization + CFLAGS += -Wcast-align -Wwrite-strings -Wnested-externs -Wundef + CFLAGS += -Wa,-adhlns=$(basename $@).lst + CFLAGS += -DDEBUG +endif + +all: + +$(OBJECTS): + +clean: + $(RM) *.hex *.eep.hex *.o *.lst *.lss + +interactive-isp: + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -t + +interactive-serial: + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(SERIAL_PROG) -P $(SERIAL_DEV) -t + + +.PHONY: all clean interactive-isp interactive-serial launch-bootloader + +program-isp-%: %.hex + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U flash:w:$< + +program-isp-eeprom-%: %.eep.hex + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U eeprom:w:$< + +program-serial-%: %.hex + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(SERIAL_PROG) -P $(SERIAL_DEV) -U flash:w:$< + +program-serial-eeprom-%: %.eep.hex launch-bootloader + $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(SERIAL_PROG) -P $(SERIAL_DEV) -U eeprom:w:$< + +%.hex: % + $(OBJCOPY) -O ihex -R .eeprom $< $@ + +%.eep.hex: % + $(OBJCOPY) --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O ihex -j .eeprom $< $@ + +%.lss: % + $(OBJDUMP) -h -S $< > $@ + +%-size: %.hex + $(SIZE) $< + +launch-bootloader: + launch-bootloader $(SERIAL_DEV) $(AVRDUDE_BAUDRATE) diff --git a/tools/usbload/config.h b/tools/usbload/config.h new file mode 100644 index 0000000..1dd0982 --- /dev/null +++ b/tools/usbload/config.h @@ -0,0 +1,18 @@ +/* configuratino file for usbload */ + +/* after this timeout, the main application ist started, if no usb + * connection is detected */ +#define TIMEOUT 50 + +/* uncomment this if you need to define some other signature bytes */ +//#define SIGNATURE_BYTES 0x23, 0x24, 0x25, 0 + +/* uncomment this if you want to catch the eeprom isp bytewise read/write + * commands. costs ~34 byte */ +//#define ENABLE_CATCH_EEPROM_ISP + +/* uncomment this if you want a usb echo function (for communication testing) */ +//#define ENABLE_ECHO_FUNC + +/* uncomment this for debug information via uart */ +//#define DEBUG_UART diff --git a/tools/usbload/fuses.txt b/tools/usbload/fuses.txt new file mode 100644 index 0000000..8ef9a3e --- /dev/null +++ b/tools/usbload/fuses.txt @@ -0,0 +1,21 @@ +additional fuse bit settings for using this bootloader: +======================================================= + +atmega88/168: + + extended fuse byte: + 1024 words bootloader size: BOOTSZ0 = 0 + BOOTSZ1 = 0 + + reset vector, jump to bootloader on reset: BOOTRST = 0 + + -> default: 0b001 = 0x01 + new: 0b000 = 0x00 + + lock byte: + SPM is not allowed to write to the Boot Loader section BLB12 = 1 + BLB11 = 0 + + -> default: 0b111111 = 0x3f + new: 0b101111 = 0x2f + diff --git a/tools/usbload/interrupts.S b/tools/usbload/interrupts.S new file mode 100644 index 0000000..2c55e6b --- /dev/null +++ b/tools/usbload/interrupts.S @@ -0,0 +1,9 @@ +.extern __init, __vector_1 +.global __vector_default, exit +.section .vectors.bootloader + +/* micro-jumptable, we are using just reset and int0 vectors */ +exit: +__vector_default: +jmp __init +jmp __vector_1 diff --git a/tools/usbload/ldscripts/avr5.x b/tools/usbload/ldscripts/avr5.x new file mode 100644 index 0000000..53e50e8 --- /dev/null +++ b/tools/usbload/ldscripts/avr5.x @@ -0,0 +1,174 @@ +/* Default linker script, for normal executables */ +OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr") +OUTPUT_ARCH(avr:5) +MEMORY +{ + text (rx) : ORIGIN = 0, LENGTH = 128K + data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0 + eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K +} +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + .hash : { *(.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .gnu.version : { *(.gnu.version) } + .gnu.version_d : { *(.gnu.version_d) } + .gnu.version_r : { *(.gnu.version_r) } + .rel.init : { *(.rel.init) } + .rela.init : { *(.rela.init) } + .rel.text : + { + *(.rel.text) + *(.rel.text.*) + *(.rel.gnu.linkonce.t*) + } + .rela.text : + { + *(.rela.text) + *(.rela.text.*) + *(.rela.gnu.linkonce.t*) + } + .rel.fini : { *(.rel.fini) } + .rela.fini : { *(.rela.fini) } + .rel.rodata : + { + *(.rel.rodata) + *(.rel.rodata.*) + *(.rel.gnu.linkonce.r*) + } + .rela.rodata : + { + *(.rela.rodata) + *(.rela.rodata.*) + *(.rela.gnu.linkonce.r*) + } + .rel.data : + { + *(.rel.data) + *(.rel.data.*) + *(.rel.gnu.linkonce.d*) + } + .rela.data : + { + *(.rela.data) + *(.rela.data.*) + *(.rela.gnu.linkonce.d*) + } + .rel.ctors : { *(.rel.ctors) } + .rela.ctors : { *(.rela.ctors) } + .rel.dtors : { *(.rel.dtors) } + .rela.dtors : { *(.rela.dtors) } + .rel.got : { *(.rel.got) } + .rela.got : { *(.rela.got) } + .rel.bss : { *(.rel.bss) } + .rela.bss : { *(.rela.bss) } + .rel.plt : { *(.rel.plt) } + .rela.plt : { *(.rela.plt) } + + /DISCARD/ : { *(.vectors) } + /DISCARD/ : { *(.fini9) + *(.fini6) + *(.fini0) + } + /* Internal text space or external memory */ + .text : + { + *(.vectors.bootloader) + __ctors_start = . ; + *(.ctors) + __ctors_end = . ; + __dtors_start = . ; + *(.dtors) + __dtors_end = . ; + *(.progmem.gcc*) + *(.progmem*) + . = ALIGN(2); + *(.init0) /* Start here after reset. */ + *(.init1) + *(.init2) /* Clear __zero_reg__, set up stack pointer. */ + *(.init3) + *(.init4) /* Initialize data and BSS. */ + *(.init5) + *(.init6) /* C++ constructors. */ + *(.init7) + *(.init8) + *(.init9) /* Call main(). */ + *(.text) + . = ALIGN(2); + *(.text.*) + . = ALIGN(2); + *(.fini9) /* _exit() starts here. */ + *(.fini8) + *(.fini7) + *(.fini6) /* C++ destructors. */ + *(.fini5) + *(.fini4) + *(.fini3) + *(.fini2) + *(.fini1) + *(.fini0) /* Infinite loop after program termination. */ + _etext = . ; + } > text + .data : AT (ADDR (.text) + SIZEOF (.text)) + { + PROVIDE (__data_start = .) ; + *(.data) + *(.gnu.linkonce.d*) + . = ALIGN(2); + _edata = . ; + PROVIDE (__data_end = .) ; + } > data + .bss SIZEOF(.data) + ADDR(.data) : + { + PROVIDE (__bss_start = .) ; + *(.bss) + *(COMMON) + PROVIDE (__bss_end = .) ; + } > data + __data_load_start = LOADADDR(.data); + __data_load_end = __data_load_start + SIZEOF(.data); + /* Global data not cleared after reset. */ + .noinit SIZEOF(.bss) + ADDR(.bss) : + { + PROVIDE (__noinit_start = .) ; + *(.noinit*) + PROVIDE (__noinit_end = .) ; + _end = . ; + PROVIDE (__heap_start = .) ; + } > data + .eeprom : + { + *(.eeprom*) + __eeprom_end = . ; + } > eeprom + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } +} diff --git a/tools/usbload/usbconfig.h b/tools/usbload/usbconfig.h new file mode 100644 index 0000000..607b08d --- /dev/null +++ b/tools/usbload/usbconfig.h @@ -0,0 +1,291 @@ +#ifndef __usbconfig_h_included__ +#define __usbconfig_h_included__ + +/* +General Description: +This file contains parts of the USB driver which can be configured and can or +must be adapted to your hardware. + +Please note that the usbdrv contains a usbconfig-prototype.h file now. We +recommend that you use that file as a template because it will always list +the newest features and options. +*/ + +#include "config.h" + +/* ---------------------------- Hardware Config ---------------------------- */ + +#define USB_CFG_IOPORTNAME D +/* This is the port where the USB bus is connected. When you configure it to + * "B", the registers PORTB, PINB and DDRB will be used. + */ +#define USB_CFG_DMINUS_BIT 4 +/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected. + * This may be any bit in the port. + */ +#define USB_CFG_DPLUS_BIT 2 +/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected. + * This may be any bit in the port. Please note that D+ must also be connected + * to interrupt pin INT0! [You can also use other interrupts, see section + * "Optional MCU Description" below, or you can connect D- to the interrupt, as + * it is required if you use the USB_COUNT_SOF feature. If you use D- for the + * interrupt, the USB interrupt will also be triggered at Start-Of-Frame + * markers every millisecond.] + */ +#define USB_CFG_CLOCK_KHZ (F_CPU/1000) +/* Clock rate of the AVR in MHz. Legal values are 12000, 15000, 16000, 16500 + * and 20000. The 16.5 MHz version of the code requires no crystal, it + * tolerates +/- 1% deviation from the nominal frequency. All other rates + * require a precision of 2000 ppm and thus a crystal! + * Default if not specified: 12 MHz + */ + +/* ----------------------- Optional Hardware Config ------------------------ */ + +#define USB_CFG_PULLUP_IOPORTNAME B +/* If you connect the 1.5k pullup resistor from D- to a port pin instead of + * V+, you can connect and disconnect the device from firmware by calling + * the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h). + * This constant defines the port on which the pullup resistor is connected. + */ +#define USB_CFG_PULLUP_BIT 0 +/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined + * above) where the 1.5k pullup resistor is connected. See description + * above for details. + */ + +/* --------------------------- Functional Range ---------------------------- */ + +#define USB_CFG_HAVE_INTRIN_ENDPOINT 0 +/* Define this to 1 if you want to compile a version with two endpoints: The + * default control endpoint 0 and an interrupt-in endpoint (any other endpoint + * number). + */ +#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0 +/* Define this to 1 if you want to compile a version with three endpoints: The + * default control endpoint 0, an interrupt-in endpoint 3 (or the number + * configured below) and a catch-all default interrupt-in endpoint as above. + * You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature. + */ +#define USB_CFG_EP3_NUMBER 3 +/* If the so-called endpoint 3 is used, it can now be configured to any other + * endpoint number (except 0) with this macro. Default if undefined is 3. + */ +/* #define USB_INITIAL_DATATOKEN USBPID_DATA1 */ +/* The above macro defines the startup condition for data toggling on the + * interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1. + * Since the token is toggled BEFORE sending any data, the first packet is + * sent with the oposite value of this configuration! + */ +#define USB_CFG_IMPLEMENT_HALT 0 +/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature + * for endpoint 1 (interrupt endpoint). Although you may not need this feature, + * it is required by the standard. We have made it a config option because it + * bloats the code considerably. + */ +#define USB_CFG_INTR_POLL_INTERVAL 200 +/* If you compile a version with endpoint 1 (interrupt-in), this is the poll + * interval. The value is in milliseconds and must not be less than 10 ms for + * low speed devices. + */ +#define USB_CFG_IS_SELF_POWERED 0 +/* Define this to 1 if the device has its own power supply. Set it to 0 if the + * device is powered from the USB bus. + */ +#define USB_CFG_MAX_BUS_POWER 100 +/* Set this variable to the maximum USB bus power consumption of your device. + * The value is in milliamperes. [It will be divided by two since USB + * communicates power requirements in units of 2 mA.] + */ +#define USB_CFG_IMPLEMENT_FN_WRITE 1 +/* Set this to 1 if you want usbFunctionWrite() to be called for control-out + * transfers. Set it to 0 if you don't need it and want to save a couple of + * bytes. + */ +#define USB_CFG_IMPLEMENT_FN_READ 1 +/* Set this to 1 if you need to send control replies which are generated + * "on the fly" when usbFunctionRead() is called. If you only want to send + * data from a static buffer, set it to 0 and return the data from + * usbFunctionSetup(). This saves a couple of bytes. + */ +#define USB_CFG_IMPLEMENT_FN_WRITEOUT 0 +/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints. + * You must implement the function usbFunctionWriteOut() which receives all + * interrupt/bulk data sent to any endpoint other than 0. The endpoint number + * can be found in 'usbRxToken'. + */ +#define USB_CFG_HAVE_FLOWCONTROL 0 +/* Define this to 1 if you want flowcontrol over USB data. See the definition + * of the macros usbDisableAllRequests() and usbEnableAllRequests() in + * usbdrv.h. + */ +#define USB_CFG_LONG_TRANSFERS 0 +/* Define this to 1 if you want to send/receive blocks of more than 254 bytes + * in a single control-in or control-out transfer. Note that the capability + * for long transfers increases the driver size. + */ +/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */ +/* This macro is a hook if you want to do unconventional things. If it is + * defined, it's inserted at the beginning of received message processing. + * If you eat the received message and don't want default processing to + * proceed, do a return after doing your things. One possible application + * (besides debugging) is to flash a status LED on each packet. + */ +/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */ +/* This macro is a hook if you need to know when an USB RESET occurs. It has + * one parameter which distinguishes between the start of RESET state and its + * end. + */ +/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */ +/* This macro (if defined) is executed when a USB SET_ADDRESS request was + * received. + */ +#define USB_COUNT_SOF 0 +/* define this macro to 1 if you need the global variable "usbSofCount" which + * counts SOF packets. This feature requires that the hardware interrupt is + * connected to D- instead of D+. + */ +#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0 +/* define this macro to 1 if you want the function usbMeasureFrameLength() + * compiled in. This function can be used to calibrate the AVR's RC oscillator. + */ + +/* -------------------------- Device Description --------------------------- */ + +#define USB_CFG_VENDOR_ID 0xc0, 0x16 /* 5824 in dec, stands for VOTI */ +/* USB vendor ID for the device, low byte first. If you have registered your + * own Vendor ID, define it here. Otherwise you use obdev's free shared + * VID/PID pair. Be sure to read USBID-License.txt for rules! + */ +#define USB_CFG_DEVICE_ID 0xdc, 0x05 /* 1500 in dec, obdev's free PID */ +/* This is the ID of the product, low byte first. It is interpreted in the + * scope of the vendor ID. If you have registered your own VID with usb.org + * or if you have licensed a PID from somebody else, define it here. Otherwise + * you use obdev's free shared VID/PID pair. Be sure to read the rules in + * USBID-License.txt! + */ +#define USB_CFG_DEVICE_VERSION 0x00, 0x01 +/* Version number of the device: Minor number first, then major number. + */ +#define USB_CFG_VENDOR_NAME 'w', 'w', 'w', '.', 'f', 'i', 's', 'c', 'h', 'l', '.', 'd', 'e' +#define USB_CFG_VENDOR_NAME_LEN 13 +/* These two values define the vendor name returned by the USB device. The name + * must be given as a list of characters under single quotes. The characters + * are interpreted as Unicode (UTF-16) entities. + * If you don't want a vendor name string, undefine these macros. + * ALWAYS define a vendor name containing your Internet domain name if you use + * obdev's free shared VID/PID pair. See the file USBID-License.txt for + * details. + */ +#define USB_CFG_DEVICE_NAME 'U', 'S', 'B', 'a', 's', 'p' +#define USB_CFG_DEVICE_NAME_LEN 6 +/* Same as above for the device name. If you don't want a device name, undefine + * the macros. See the file USBID-License.txt before you assign a name. + */ +/*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */ +/*#define USB_CFG_SERIAL_NUMBER_LEN 0 */ +/* Same as above for the serial number. If you don't want a serial number, + * undefine the macros. + * It may be useful to provide the serial number through other means than at + * compile time. See the section about descriptor properties below for how + * to fine tune control over USB descriptors such as the string descriptor + * for the serial number. + */ +#define USB_CFG_DEVICE_CLASS 0xff /* set to 0 if deferred to interface */ +#define USB_CFG_DEVICE_SUBCLASS 0 +/* See USB specification if you want to conform to an existing device class. + * Class 0xff is "vendor specific". + */ +#define USB_CFG_INTERFACE_CLASS 0 /* define class here if not at device level */ +#define USB_CFG_INTERFACE_SUBCLASS 0 +#define USB_CFG_INTERFACE_PROTOCOL 0 +/* See USB specification if you want to conform to an existing device class or + * protocol. The following classes must be set at interface level: + * HID class is 3, no subclass and protocol required (but may be useful!) + * CDC class is 2, use subclass 2 and protocol 1 for ACM + */ +/* #define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 42 */ +/* Define this to the length of the HID report descriptor, if you implement + * an HID device. Otherwise don't define it or define it to 0. + * If you use this define, you must add a PROGMEM character array named + * "usbHidReportDescriptor" to your code which contains the report descriptor. + * Don't forget to keep the array and this define in sync! + */ + +#define USB_PUBLIC static +/* Use the define above if you #include usbdrv.c instead of linking against it. + * This technique saves a couple of bytes in flash memory. + */ + +/* ------------------- Fine Control over USB Descriptors ------------------- */ +/* If you don't want to use the driver's default USB descriptors, you can + * provide our own. These can be provided as (1) fixed length static data in + * flash memory, (2) fixed length static data in RAM or (3) dynamically at + * runtime in the function usbFunctionDescriptor(). See usbdrv.h for more + * information about this function. + * Descriptor handling is configured through the descriptor's properties. If + * no properties are defined or if they are 0, the default descriptor is used. + * Possible properties are: + * + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched + * at runtime via usbFunctionDescriptor(). + * + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found + * in static memory is in RAM, not in flash memory. + * + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash), + * the driver must know the descriptor's length. The descriptor itself is + * found at the address of a well known identifier (see below). + * List of static descriptor names (must be declared PROGMEM if in flash): + * char usbDescriptorDevice[]; + * char usbDescriptorConfiguration[]; + * char usbDescriptorHidReport[]; + * char usbDescriptorString0[]; + * int usbDescriptorStringVendor[]; + * int usbDescriptorStringDevice[]; + * int usbDescriptorStringSerialNumber[]; + * Other descriptors can't be provided statically, they must be provided + * dynamically at runtime. + * + * Descriptor properties are or-ed or added together, e.g.: + * #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18)) + * + * The following descriptors are defined: + * USB_CFG_DESCR_PROPS_DEVICE + * USB_CFG_DESCR_PROPS_CONFIGURATION + * USB_CFG_DESCR_PROPS_STRINGS + * USB_CFG_DESCR_PROPS_STRING_0 + * USB_CFG_DESCR_PROPS_STRING_VENDOR + * USB_CFG_DESCR_PROPS_STRING_PRODUCT + * USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER + * USB_CFG_DESCR_PROPS_HID + * USB_CFG_DESCR_PROPS_HID_REPORT + * USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver) + * + */ + +#define USB_CFG_DESCR_PROPS_DEVICE 0 +#define USB_CFG_DESCR_PROPS_CONFIGURATION 0 +#define USB_CFG_DESCR_PROPS_STRINGS 0 +#define USB_CFG_DESCR_PROPS_STRING_0 0 +#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0 +#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0 +#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0 +#define USB_CFG_DESCR_PROPS_HID 0 +#define USB_CFG_DESCR_PROPS_HID_REPORT 0 +#define USB_CFG_DESCR_PROPS_UNKNOWN 0 + +/* ----------------------- Optional MCU Description ------------------------ */ + +/* The following configurations have working defaults in usbdrv.h. You + * usually don't need to set them explicitly. Only if you want to run + * the driver on a device which is not yet supported or with a compiler + * which is not fully supported (such as IAR C) or if you use a differnt + * interrupt than INT0, you may have to define some of these. + */ +/* #define USB_INTR_CFG MCUCR */ +/* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */ +/* #define USB_INTR_CFG_CLR 0 */ +/* #define USB_INTR_ENABLE GIMSK */ +/* #define USB_INTR_ENABLE_BIT INT0 */ +/* #define USB_INTR_PENDING GIFR */ +/* #define USB_INTR_PENDING_BIT INTF0 */ + +#endif /* __usbconfig_h_included__ */ diff --git a/tools/usbload/usbdrv/Changelog.txt b/tools/usbload/usbdrv/Changelog.txt new file mode 100644 index 0000000..186d066 --- /dev/null +++ b/tools/usbload/usbdrv/Changelog.txt @@ -0,0 +1,233 @@ +This file documents changes in the firmware-only USB driver for atmel's AVR +microcontrollers. New entries are always appended to the end of the file. +Scroll down to the bottom to see the most recent changes. + +2005-04-01: + - Implemented endpoint 1 as interrupt-in endpoint. + - Moved all configuration options to usbconfig.h which is not part of the + driver. + - Changed interface for usbVendorSetup(). + - Fixed compatibility with ATMega8 device. + - Various minor optimizations. + +2005-04-11: + - Changed interface to application: Use usbFunctionSetup(), usbFunctionRead() + and usbFunctionWrite() now. Added configuration options to choose which + of these functions to compile in. + - Assembler module delivers receive data non-inverted now. + - Made register and bit names compatible with more AVR devices. + +2005-05-03: + - Allow address of usbRxBuf on any memory page as long as the buffer does + not cross 256 byte page boundaries. + - Better device compatibility: works with Mega88 now. + - Code optimization in debugging module. + - Documentation updates. + +2006-01-02: + - Added (free) default Vendor- and Product-IDs bought from voti.nl. + - Added USBID-License.txt file which defines the rules for using the free + shared VID/PID pair. + - Added Readme.txt to the usbdrv directory which clarifies administrative + issues. + +2006-01-25: + - Added "configured state" to become more standards compliant. + - Added "HALT" state for interrupt endpoint. + - Driver passes the "USB Command Verifier" test from usb.org now. + - Made "serial number" a configuration option. + - Minor optimizations, we now recommend compiler option "-Os" for best + results. + - Added a version number to usbdrv.h + +2006-02-03: + - New configuration variable USB_BUFFER_SECTION for the memory section where + the USB rx buffer will go. This defaults to ".bss" if not defined. Since + this buffer MUST NOT cross 256 byte pages (not even touch a page at the + end), the user may want to pass a linker option similar to + "-Wl,--section-start=.mybuffer=0x800060". + - Provide structure for usbRequest_t. + - New defines for USB constants. + - Prepared for HID implementations. + - Increased data size limit for interrupt transfers to 8 bytes. + - New macro usbInterruptIsReady() to query interrupt buffer state. + +2006-02-18: + - Ensure that the data token which is sent as an ack to an OUT transfer is + always zero sized. This fixes a bug where the host reports an error after + sending an out transfer to the device, although all data arrived at the + device. + - Updated docs in usbdrv.h to reflect changed API in usbFunctionWrite(). + +* Release 2006-02-20 + + - Give a compiler warning when compiling with debugging turned on. + - Added Oleg Semyonov's changes for IAR-cc compatibility. + - Added new (optional) functions usbDeviceConnect() and usbDeviceDisconnect() + (also thanks to Oleg!). + - Rearranged tests in usbPoll() to save a couple of instructions in the most + likely case that no actions are pending. + - We need a delay between the SET ADDRESS request until the new address + becomes active. This delay was handled in usbPoll() until now. Since the + spec says that the delay must not exceed 2ms, previous versions required + aggressive polling during the enumeration phase. We have now moved the + handling of the delay into the interrupt routine. + - We must not reply with NAK to a SETUP transaction. We can only achieve this + by making sure that the rx buffer is empty when SETUP tokens are expected. + We therefore don't pass zero sized data packets from the status phase of + a transfer to usbPoll(). This change MAY cause troubles if you rely on + receiving a less than 8 bytes long packet in usbFunctionWrite() to + identify the end of a transfer. usbFunctionWrite() will NEVER be called + with a zero length. + +* Release 2006-03-14 + + - Improved IAR C support: tiny memory model, more devices + - Added template usbconfig.h file under the name usbconfig-prototype.h + +* Release 2006-03-26 + + - Added provision for one more interrupt-in endpoint (endpoint 3). + - Added provision for one interrupt-out endpoint (endpoint 1). + - Added flowcontrol macros for USB. + - Added provision for custom configuration descriptor. + - Allow ANY two port bits for D+ and D-. + - Merged (optional) receive endpoint number into global usbRxToken variable. + - Use USB_CFG_IOPORTNAME instead of USB_CFG_IOPORT. We now construct the + variable name from the single port letter instead of computing the address + of related ports from the output-port address. + +* Release 2006-06-26 + + - Updated documentation in usbdrv.h and usbconfig-prototype.h to reflect the + new features. + - Removed "#warning" directives because IAR does not understand them. Use + unused static variables instead to generate a warning. + - Do not include when compiling with IAR. + - Introduced USB_CFG_DESCR_PROPS_* in usbconfig.h to configure how each + USB descriptor should be handled. It is now possible to provide descriptor + data in Flash, RAM or dynamically at runtime. + - STALL is now a status in usbTxLen* instead of a message. We can now conform + to the spec and leave the stall status pending until it is cleared. + - Made usbTxPacketCnt1 and usbTxPacketCnt3 public. This allows the + application code to reset data toggling on interrupt pipes. + +* Release 2006-07-18 + + - Added an #if !defined __ASSEMBLER__ to the warning in usbdrv.h. This fixes + an assembler error. + - usbDeviceDisconnect() takes pull-up resistor to high impedance now. + +* Release 2007-02-01 + + - Merged in some code size improvements from usbtiny (thanks to Dick + Streefland for these optimizations!) + - Special alignment requirement for usbRxBuf not required any more. Thanks + again to Dick Streefland for this hint! + - Reverted to "#warning" instead of unused static variables -- new versions + of IAR CC should handle this directive. + - Changed Open Source license to GNU GPL v2 in order to make linking against + other free libraries easier. We no longer require publication of the + circuit diagrams, but we STRONGLY encourage it. If you improve the driver + itself, PLEASE grant us a royalty free license to your changes for our + commercial license. + +* Release 2007-03-29 + + - New configuration option "USB_PUBLIC" in usbconfig.h. + - Set USB version number to 1.10 instead of 1.01. + - Code used USB_CFG_DESCR_PROPS_STRING_DEVICE and + USB_CFG_DESCR_PROPS_STRING_PRODUCT inconsistently. Changed all occurrences + to USB_CFG_DESCR_PROPS_STRING_PRODUCT. + - New assembler module for 16.5 MHz RC oscillator clock with PLL in receiver + code. + - New assembler module for 16 MHz crystal. + - usbdrvasm.S contains common code only, clock-specific parts have been moved + to usbdrvasm12.S, usbdrvasm16.S and usbdrvasm165.S respectively. + +* Release 2007-06-25 + + - 16 MHz module: Do SE0 check in stuffed bits as well. + +* Release 2007-07-07 + + - Define hi8(x) for IAR compiler to limit result to 8 bits. This is necessary + for negative values. + - Added 15 MHz module contributed by V. Bosch. + - Interrupt vector name can now be configured. This is useful if somebody + wants to use a different hardware interrupt than INT0. + +* Release 2007-08-07 + + - Moved handleIn3 routine in usbdrvasm16.S so that relative jump range is + not exceeded. + - More config options: USB_RX_USER_HOOK(), USB_INITIAL_DATATOKEN, + USB_COUNT_SOF + - USB_INTR_PENDING can now be a memory address, not just I/O + +* Release 2007-09-19 + + - Split out common parts of assembler modules into separate include file + - Made endpoint numbers configurable so that given interface definitions + can be matched. See USB_CFG_EP3_NUMBER in usbconfig-prototype.h. + - Store endpoint number for interrupt/bulk-out so that usbFunctionWriteOut() + can handle any number of endpoints. + - Define usbDeviceConnect() and usbDeviceDisconnect() even if no + USB_CFG_PULLUP_IOPORTNAME is defined. Directly set D+ and D- to 0 in this + case. + +* Release 2007-12-01 + + - Optimize usbDeviceConnect() and usbDeviceDisconnect() for less code size + when USB_CFG_PULLUP_IOPORTNAME is not defined. + +* Release 2007-12-13 + + - Renamed all include-only assembler modules from *.S to *.inc so that + people don't add them to their project sources. + - Distribute leap bits in tx loop more evenly for 16 MHz module. + - Use "macro" and "endm" instead of ".macro" and ".endm" for IAR + - Avoid compiler warnings for constant expr range by casting some values in + USB descriptors. + +* Release 2008-01-21 + + - Fixed bug in 15 and 16 MHz module where the new address set with + SET_ADDRESS was already accepted at the next NAK or ACK we send, not at + the next data packet we send. This caused problems when the host polled + too fast. Thanks to Alexander Neumann for his help and patience debugging + this issue! + +* Release 2008-02-05 + + - Fixed bug in 16.5 MHz module where a register was used in the interrupt + handler before it was pushed. This bug was introduced with version + 2007-09-19 when common parts were moved to a separate file. + - Optimized CRC routine (thanks to Reimar Doeffinger). + +* Release 2008-02-16 + + - Removed outdated IAR compatibility stuff (code sections). + - Added hook macros for USB_RESET_HOOK() and USB_SET_ADDRESS_HOOK(). + - Added optional routine usbMeasureFrameLength() for calibration of the + internal RC oscillator. + +* Release 2008-02-28 + + - USB_INITIAL_DATATOKEN defaults to USBPID_DATA1 now, which means that we + start with sending USBPID_DATA0. + - Changed defaults in usbconfig-prototype.h + - Added free USB VID/PID pair for MIDI class devices + - Restructured AVR-USB as separate package, not part of PowerSwitch any more. + +* Release 2008-04-18 + + - Restructured usbdrv.c so that it is easier to read and understand. + - Better code optimization with gcc 4. + - If a second interrupt in endpoint is enabled, also add it to config + descriptor. + - Added config option for long transfers (above 254 bytes), see + USB_CFG_LONG_TRANSFERS in usbconfig.h. + - Added 20 MHz module contributed by Jeroen Benschop. + +* Release 2008-05-13 diff --git a/tools/usbload/usbdrv/CommercialLicense.txt b/tools/usbload/usbdrv/CommercialLicense.txt new file mode 100644 index 0000000..654f16d --- /dev/null +++ b/tools/usbload/usbdrv/CommercialLicense.txt @@ -0,0 +1,156 @@ +AVR-USB Driver Software License Agreement +Version 2008-04-15 + +THIS LICENSE AGREEMENT GRANTS YOU CERTAIN RIGHTS IN A SOFTWARE. YOU CAN +ENTER INTO THIS AGREEMENT AND ACQUIRE THE RIGHTS OUTLINED BELOW BY PAYING +THE AMOUNT ACCORDING TO SECTION 4 ("PAYMENT") TO OBJECTIVE DEVELOPMENT. + + +1 DEFINITIONS + +1.1 "OBJECTIVE DEVELOPMENT" shall mean OBJECTIVE DEVELOPMENT Software GmbH, +Grosse Schiffgasse 1A/7, 1020 Wien, AUSTRIA. + +1.2 "You" shall mean the Licensee. + +1.3 "AVR-USB" shall mean all files included in the package distributed under +the name "avrusb" by OBJECTIVE DEVELOPMENT (http://www.obdev.at/avrusb/) +unless otherwise noted. This includes the firmware-only USB device +implementation for Atmel AVR microcontrollers, some simple device examples +and host side software examples and libraries. + + +2 LICENSE GRANTS + +2.1 Source Code. OBJECTIVE DEVELOPMENT shall furnish you with the source +code of AVR-USB. + +2.2 Distribution and Use. OBJECTIVE DEVELOPMENT grants you the +non-exclusive right to use and distribute AVR-USB with your hardware +product(s), restricted by the limitations in section 3 below. + +2.3 Modifications. OBJECTIVE DEVELOPMENT grants you the right to modify +your copy of AVR-USB according to your needs. + +2.4 USB IDs. OBJECTIVE DEVELOPMENT grants you the exclusive rights to use +USB Product ID(s) sent to you in e-mail after receiving your payment in +conjunction with USB Vendor ID 5824. OBJECTIVE DEVELOPMENT has acquired an +exclusive license for this pair of USB identifiers from Wouter van Ooijen +(www.voti.nl), who has licensed the VID from the USB Implementers Forum, +Inc. (www.usb.org). + + +3 LICENSE RESTRICTIONS + +3.1 Number of Units. Only one of the following three definitions is +applicable. Which one is determined by the amount you pay to OBJECTIVE +DEVELOPMENT, see section 4 ("Payment") below. + +Hobby License: You may use AVR-USB according to section 2 above in no more +than 5 hardware units. These units must not be sold for profit. + +Entry Level License: You may use AVR-USB according to section 2 above in no +more than 150 hardware units. + +Professional License: You may use AVR-USB according to section 2 above in +any number of hardware units, except for large scale production ("unlimited +fair use"). Quantities below 10,000 units are not considered large scale +production. If your reach quantities which are obviously large scale +production, you must pay a license fee of 0.10 EUR per unit for all units +above 10,000. + +3.2 Rental. You may not rent, lease, or lend AVR-USB or otherwise encumber +any copy of AVR-USB, or any of the rights granted herein. + +3.3 Transfer. You may not transfer your rights under this Agreement to +another party without OBJECTIVE DEVELOPMENT's prior written consent. If +such consent is obtained, you may permanently transfer this License to +another party. The recipient of such transfer must agree to all terms and +conditions of this Agreement. + +3.4 Reservation of Rights. OBJECTIVE DEVELOPMENT retains all rights not +expressly granted. + +3.5 Non-Exclusive Rights. Your license rights under this Agreement are +non-exclusive. + +3.6 Third Party Rights. This Agreement cannot grant you rights controlled +by third parties. In particular, you are not allowed to use the USB logo or +other trademarks owned by the USB Implementers Forum, Inc. without their +consent. Since such consent depends on USB certification, it should be +noted that AVR-USB will not pass certification because it does not +implement checksum verification and the microcontroller ports do not meet +the electrical specifications. + + +4 PAYMENT + +The payment amount depends on the variation of this agreement (according to +section 3.1) into which you want to enter. Concrete prices are listed on +OBJECTIVE DEVELOPMENT's web site, usually at +http://www.obdev.at/avrusb/license.html. You agree to pay the amount listed +there to OBJECTIVE DEVELOPMENT or OBJECTIVE DEVELOPMENT's payment processor +or reseller. + + +5 COPYRIGHT AND OWNERSHIP + +AVR-USB is protected by copyright laws and international copyright +treaties, as well as other intellectual property laws and treaties. AVR-USB +is licensed, not sold. + + +6 TERM AND TERMINATION + +6.1 Term. This Agreement shall continue indefinitely. However, OBJECTIVE +DEVELOPMENT may terminate this Agreement and revoke the granted license and +USB-IDs if you fail to comply with any of its terms and conditions. + +6.2 Survival of Terms. All provisions regarding secrecy, confidentiality +and limitation of liability shall survive termination of this agreement. + + +7 DISCLAIMER OF WARRANTY AND LIABILITY + +LIMITED WARRANTY. AVR-USB IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY +KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OBJECTIVE +DEVELOPMENT AND ITS SUPPLIERS HEREBY DISCLAIM ALL WARRANTIES, EITHER +EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND +NON-INFRINGEMENT, WITH REGARD TO AVR-USB, AND THE PROVISION OF OR FAILURE +TO PROVIDE SUPPORT SERVICES. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL +RIGHTS. YOU MAY HAVE OTHERS, WHICH VARY FROM STATE/JURISDICTION TO +STATE/JURISDICTION. + +LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, +IN NO EVENT SHALL OBJECTIVE DEVELOPMENT OR ITS SUPPLIERS BE LIABLE FOR ANY +SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER +(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, +BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY +LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE AVR-USB OR THE +PROVISION OF OR FAILURE TO PROVIDE SUPPORT SERVICES, EVEN IF OBJECTIVE +DEVELOPMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN ANY +CASE, OBJECTIVE DEVELOPMENT'S ENTIRE LIABILITY UNDER ANY PROVISION OF THIS +AGREEMENT SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR AVR-USB. + + +8 MISCELLANEOUS TERMS + +8.1 Marketing. OBJECTIVE DEVELOPMENT has the right to mention for marketing +purposes that you entered into this agreement. + +8.2 Entire Agreement. This document represents the entire agreement between +OBJECTIVE DEVELOPMENT and you. It may only be modified in writing signed by +an authorized representative of both, OBJECTIVE DEVELOPMENT and you. + +8.3 Severability. In case a provision of these terms and conditions should +be or become partly or entirely invalid, ineffective, or not executable, +the validity of all other provisions shall not be affected. + +8.4 Applicable Law. This agreement is governed by the laws of the Republic +of Austria. + +8.5 Responsible Courts. The responsible courts in Vienna/Austria will have +exclusive jurisdiction regarding all disputes in connection with this +agreement. + diff --git a/tools/usbload/usbdrv/License.txt b/tools/usbload/usbdrv/License.txt new file mode 100644 index 0000000..f6a232e --- /dev/null +++ b/tools/usbload/usbdrv/License.txt @@ -0,0 +1,359 @@ +OBJECTIVE DEVELOPMENT GmbH's AVR-USB driver software is distributed under the +terms and conditions of the GNU GPL version 2, see the text below. In addition +to the requirements in the GPL, we STRONGLY ENCOURAGE you to do the following: + +(1) Publish your entire project on a web site and drop us a note with the URL. +Use the form at http://www.obdev.at/avrusb/feedback.html for your submission. + +(2) Adhere to minimum publication standards. Please include AT LEAST: + - a circuit diagram in PDF, PNG or GIF format + - full source code for the host software + - a Readme.txt file in ASCII format which describes the purpose of the + project and what can be found in which directories and which files + - a reference to http://www.obdev.at/avrusb/ + +(3) If you improve the driver firmware itself, please give us a free license +to your modifications for our commercial license offerings. + + + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/tools/usbload/usbdrv/Readme.txt b/tools/usbload/usbdrv/Readme.txt new file mode 100644 index 0000000..cb1a70e --- /dev/null +++ b/tools/usbload/usbdrv/Readme.txt @@ -0,0 +1,146 @@ +This is the Readme file to Objective Development's firmware-only USB driver +for Atmel AVR microcontrollers. For more information please visit +http://www.obdev.at/avrusb/ + +This directory contains the USB firmware only. Copy it as-is to your own +project and add all .c and .S files to your project (these files are marked +with an asterisk in the list below). Then copy usbconfig-prototype.h as +usbconfig.h to your project and edit it according to your configuration. + + +TECHNICAL DOCUMENTATION +======================= +The technical documentation (API) for the firmware driver is contained in the +file "usbdrv.h". Please read all of it carefully! Configuration options are +documented in "usbconfig-prototype.h". + +The driver consists of the following files: + Readme.txt ............. The file you are currently reading. + Changelog.txt .......... Release notes for all versions of the driver. + usbdrv.h ............... Driver interface definitions and technical docs. +* usbdrv.c ............... High level language part of the driver. Link this + module to your code! +* usbdrvasm.S ............ Assembler part of the driver. This module is mostly + a stub and includes one of the usbdrvasm*.S files + depending on processor clock. Link this module to + your code! + usbdrvasm*.inc ......... Assembler routines for particular clock frequencies. + Included by usbdrvasm.S, don't link it directly! + asmcommon.inc .......... Common assembler routines. Included by + usbdrvasm*.inc, don't link it directly! + usbconfig-prototype.h .. Prototype for your own usbdrv.h file. +* oddebug.c .............. Debug functions. Only used when DEBUG_LEVEL is + defined to a value greater than 0. Link this module + to your code! + oddebug.h .............. Interface definitions of the debug module. + iarcompat.h ............ Compatibility definitions for IAR C-compiler. + usbdrvasm.asm .......... Compatibility stub for IAR-C-compiler. Use this + module instead of usbdrvasm.S when you assembler + with IAR's tools. + License.txt ............ Open Source license for this driver. + CommercialLicense.txt .. Optional commercial license for this driver. + USBID-License.txt ...... Terms and conditions for using particular USB ID + values for particular purposes. + +(*) ... These files should be linked to your project. + + +CPU CORE CLOCK FREQUENCY +======================== +We supply assembler modules for clock frequencies of 12 MHz, 15 MHz, 16 MHz and +16.5 MHz. Other clock rates are not supported. The actual clock rate must be +configured in usbdrv.h unless you use the default 12 MHz. + +12 MHz Clock +This is the traditional clock rate of AVR-USB because it's the lowest clock +rate where the timing constraints of the USB spec can be met. + +15 MHz Clock +Similar to 12 MHz, but some NOPs inserted. On the other hand, the higher clock +rate allows for some loops which make the resulting code size somewhat smaller +than the 12 MHz version. + +16 MHz Clock +This clock rate has been added for users of the Arduino board and other +ready-made boards which come with a fixed 16 MHz crystal. It's also an option +if you need the slightly higher clock rate for performance reasons. Since +16 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code +is somewhat tricky and has to insert a leap cycle every third byte. + +16.5 MHz Clock +The assembler module for this clock rate differs from the other modules because +it has been built for an RC oscillator with only 1% precision. The receiver +code inserts leap cycles to compensate for clock deviations. 1% is also the +precision which can be achieved by calibrating the internal RC oscillator of +the AVR. Please note that only AVRs with internal 64 MHz PLL oscillator can be +used since the 8 MHz RC oscillator cannot be trimmed up to 16.5 MHz. This +includes the very popular ATTiny25, ATTiny45, ATTiny85 series as well as the +ATTiny26. + +See the EasyLogger example at http://www.obdev.at/avrusb/easylogger.html for +code which calibrates the RC oscillator based on the USB frame clock. + +20 MHz Clock +This module is for people who won't do it with less than the maximum. Since +20 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code +uses similar tricks as the 16 MHz module to insert leap cycles. + + +USB IDENTIFIERS +=============== +Every USB device needs a vendor- and a product-identifier (VID and PID). VIDs +are obtained from usb.org for a price of 1,500 USD. Once you have a VID, you +can assign PIDs at will. + +Since an entry level cost of 1,500 USD is too high for most small companies +and hobbyists, we provide some VID/PID pairs for free. See the file +USBID-License.txt for details. + +Objective Development also has some license offerings which include product +IDs. See http://www.obdev.at/avrusb/ for details. + + +DEVELOPMENT SYSTEM +================== +This driver has been developed and optimized for the GNU compiler version 3 +(gcc 3). It does work well with gcc 4, but with bigger code size. We recommend +that you use the GNU compiler suite because it is freely available. AVR-USB +has also been ported to the IAR compiler and assembler. It has been tested +with IAR 4.10B/W32 and 4.12A/W32 on an ATmega8 with the "small" and "tiny" +memory model. Not every release is tested with IAR CC and the driver may +therefore fail to compile with IAR. Please note that gcc is more efficient for +usbdrv.c because this module has been deliberately optimized for gcc. + + +USING AVR-USB FOR FREE +====================== +The AVR firmware driver is published under the GNU General Public License +Version 2 (GPL2). See the file "License.txt" for details. + +If you decide for the free GPL2, we STRONGLY ENCOURAGE you to do the following +things IN ADDITION to the obligations from the GPL2: + +(1) Publish your entire project on a web site and drop us a note with the URL. +Use the form at http://www.obdev.at/avrusb/feedback.html for your submission. +If you don't have a web site, you can publish the project in obdev's +documentation wiki at +http://www.obdev.at/goto.php?t=avrusb-wiki&p=hosted-projects. + +(2) Adhere to minimum publication standards. Please include AT LEAST: + - a circuit diagram in PDF, PNG or GIF format + - full source code for the host software + - a Readme.txt file in ASCII format which describes the purpose of the + project and what can be found in which directories and which files + - a reference to http://www.obdev.at/avrusb/ + +(3) If you improve the driver firmware itself, please give us a free license +to your modifications for our commercial license offerings. + + +COMMERCIAL LICENSES FOR AVR-USB +=============================== +If you don't want to publish your source code under the terms of the GPL2, +you can simply pay money for AVR-USB. As an additional benefit you get +USB PIDs for free, licensed exclusively to you. See the file +"CommercialLicense.txt" for details. + diff --git a/tools/usbload/usbdrv/USBID-License.txt b/tools/usbload/usbdrv/USBID-License.txt new file mode 100644 index 0000000..984c9ee --- /dev/null +++ b/tools/usbload/usbdrv/USBID-License.txt @@ -0,0 +1,146 @@ +Royalty-Free Non-Exclusive License USB Product-ID +================================================= + +Version 2008-04-07 + +OBJECTIVE DEVELOPMENT Software GmbH hereby grants you the non-exclusive +right to use three USB.org vendor-ID (VID) / product-ID (PID) pairs with +products based on Objective Development's firmware-only USB driver for +Atmel AVR microcontrollers: + + * VID = 5824 (=0x16c0) / PID = 1500 (=0x5dc) for devices implementing no + USB device class (vendor-class devices with USB class = 0xff). Devices + using this pair will be referred to as "VENDOR CLASS" devices. + + * VID = 5824 (=0x16c0) / PID = 1503 (=0x5df) for HID class devices + (excluding mice and keyboards). Devices using this pair will be referred + to as "HID CLASS" devices. + + * VID = 5824 (=0x16c0) / PID = 1505 (=0x5e1) for CDC class modem devices + Devices using this pair will be referred to as "CDC-ACM CLASS" devices. + + * VID = 5824 (=0x16c0) / PID = 1508 (=0x5e4) for MIDI class devices + Devices using this pair will be referred to as "MIDI CLASS" devices. + +Since the granted right is non-exclusive, the same VID/PID pairs may be +used by many companies and individuals for different products. To avoid +conflicts, your device and host driver software MUST adhere to the rules +outlined below. + +OBJECTIVE DEVELOPMENT Software GmbH has licensed these VID/PID pairs from +Wouter van Ooijen (see www.voti.nl), who has licensed the VID from the USB +Implementers Forum, Inc. (see www.usb.org). The VID is registered for the +company name "Van Ooijen Technische Informatica". + + +RULES AND RESTRICTIONS +====================== + +(1) The USB device MUST provide a textual representation of the +manufacturer and product identification. The manufacturer identification +MUST be available at least in USB language 0x0409 (English/US). + +(2) The textual manufacturer identification MUST contain either an Internet +domain name (e.g. "mycompany.com") registered and owned by you, or an +e-mail address under your control (e.g. "myname@gmx.net"). You can embed +the domain name or e-mail address in any string you like, e.g. "Objective +Development http://www.obdev.at/avrusb/". + +(3) You are responsible for retaining ownership of the domain or e-mail +address for as long as any of your products are in use. + +(4) You may choose any string for the textual product identification, as +long as this string is unique within the scope of your textual manufacturer +identification. + +(5) Matching of device-specific drivers MUST be based on the textual +manufacturer and product identification in addition to the usual VID/PID +matching. This means that operating system features which are based on +VID/PID matching only (e.g. Windows kernel level drivers, automatic actions +when the device is plugged in etc) MUST NOT be used. The driver matching +MUST be a comparison of the entire strings, NOT a sub-string match. For +CDC-ACM CLASS and MIDI CLASS devices, a generic class driver should be used +and the matching is based on the USB device class. + +(6) The extent to which VID/PID matching is allowed for non device-specific +drivers or features depends on the operating system and particular VID/PID +pair used: + + * Mac OS X, Linux, FreeBSD and other Unixes: No VID/PID matching is + required and hence no VID/PID-only matching is allowed at all. + + * Windows: The operating system performs VID/PID matching for the kernel + level driver. You are REQUIRED to use libusb-win32 (see + http://libusb-win32.sourceforge.net/) as the kernel level driver for + VENDOR CLASS devices. HID CLASS devices all use the generic HID class + driver shipped with Windows, except mice and keyboards. You therefore + MUST NOT use any of the shared VID/PID pairs for mice or keyboards. + CDC-ACM CLASS devices require a ".inf" file which matches on the VID/PID + pair. This ".inf" file MUST load the "usbser" driver to configure the + device as modem (COM-port). + +(7) OBJECTIVE DEVELOPMENT Software GmbH disclaims all liability for any +problems which are caused by the shared use of these VID/PID pairs. You +have been warned that the sharing of VID/PID pairs may cause problems. If +you want to avoid them, get your own VID/PID pair for exclusive use. + + +HOW TO IMPLEMENT THESE RULES +============================ + +The following rules are for VENDOR CLASS and HID CLASS devices. CDC-ACM +CLASS and MIDI CLASS devices use the operating system's class driver and +don't need a custom driver. + +The host driver MUST iterate over all devices with the given VID/PID +numbers in their device descriptors and query the string representation for +the manufacturer name in USB language 0x0409 (English/US). It MUST compare +the ENTIRE string with your textual manufacturer identification chosen in +(2) above. A substring search for your domain or e-mail address is NOT +acceptable. The driver MUST NOT touch the device (other than querying the +descriptors) unless the strings match. + +For all USB devices with matching VID/PID and textual manufacturer +identification, the host driver must query the textual product +identification and string-compare it with the name of the product it can +control. It may only initialize the device if the product matches exactly. + +Objective Development provides examples for these matching rules with the +"PowerSwitch" project (using libusb) and with the "Automator" project +(using Windows calls on Windows and libusb on Unix). + + +Technical Notes: +================ + +Sharing the same VID/PID pair among devices is possible as long as ALL +drivers which match the VID/PID also perform matching on the textual +identification strings. This is easy on all operating systems except +Windows, since Windows establishes a static connection between the VID/PID +pair and a kernel level driver. All devices with the same VID/PID pair must +therefore use THE SAME kernel level driver. + +We therefore demand that you use libusb-win32 for VENDOR CLASS devices. +This is a generic kernel level driver which allows all types of USB access +for user space applications. This is only a partial solution of the +problem, though, because different device drivers may come with different +versions of libusb-win32 and they may not work with the libusb version of +the respective other driver. You are therefore encouraged to test your +driver against a broad range of libusb-win32 versions. Do not use new +features in new versions, or check for their existence before you use them. +When a new libusb-win32 becomes available, make sure that your driver is +compatible with it. + +For HID CLASS devices it is necessary that all those devices bind to the +same kernel driver: Microsoft's generic USB HID driver. This is true for +all HID devices except those with a specialized driver. Currently, the only +HIDs with specialized drivers are mice and keyboards. You therefore MUST +NOT use a shared VID/PID with mouse and keyboard devices. + +Sharing the same VID/PID among different products is unusual and probably +violates the USB specification. If you do it, you do it at your own risk. + +To avoid possible incompatibilities, we highly recommend that you get your +own VID/PID pair if you intend to sell your product. Objective +Development's commercial licenses for AVR-USB include a PID for +unrestricted exclusive use. diff --git a/tools/usbload/usbdrv/asmcommon.inc b/tools/usbload/usbdrv/asmcommon.inc new file mode 100644 index 0000000..819c0bd --- /dev/null +++ b/tools/usbload/usbdrv/asmcommon.inc @@ -0,0 +1,178 @@ +/* Name: asmcommon.inc + * Project: AVR USB driver + * Author: Christian Starkjohann + * Creation Date: 2007-11-05 + * Tabsize: 4 + * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * Revision: $Id$ + */ + +/* Do not link this file! Link usbdrvasm.S instead, which includes the + * appropriate implementation! + */ + +/* +General Description: +This file contains assembler code which is shared among the USB driver +implementations for different CPU cocks. Since the code must be inserted +in the middle of the module, it's split out into this file and #included. + +Jump destinations called from outside: + sofError: Called when no start sequence was found. + se0: Called when a package has been successfully received. + overflow: Called when receive buffer overflows. + doReturn: Called after sending data. + +Outside jump destinations used by this module: + waitForJ: Called to receive an already arriving packet. + sendAckAndReti: + sendNakAndReti: + sendCntAndReti: + usbSendAndReti: + +The following macros must be defined before this file is included: + .macro POP_STANDARD + .endm + .macro POP_RETI + .endm +*/ + +#define token x1 + +overflow: + ldi x2, 1< +#ifndef __IAR_SYSTEMS_ASM__ +# include +#endif + +#define __attribute__(arg) + +#ifdef __IAR_SYSTEMS_ASM__ +# define __ASSEMBLER__ +#endif + +#ifdef __HAS_ELPM__ +# define PROGMEM __farflash +#else +# define PROGMEM __flash +#endif + +#define PRG_RDB(addr) (*(PROGMEM char *)(addr)) + +/* The following definitions are not needed by the driver, but may be of some + * help if you port a gcc based project to IAR. + */ +#define cli() __disable_interrupt() +#define sei() __enable_interrupt() +#define wdt_reset() __watchdog_reset() + +/* Depending on the device you use, you may get problems with the way usbdrv.h + * handles the differences between devices. Since IAR does not use #defines + * for MCU registers, we can't check for the existence of a particular + * register with an #ifdef. If the autodetection mechanism fails, include + * definitions for the required USB_INTR_* macros in your usbconfig.h. See + * usbconfig-prototype.h and usbdrv.h for details. + */ + +#endif /* defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ */ +#endif /* __iarcompat_h_INCLUDED__ */ diff --git a/tools/usbload/usbdrv/oddebug.c b/tools/usbload/usbdrv/oddebug.c new file mode 100644 index 0000000..bd528e2 --- /dev/null +++ b/tools/usbload/usbdrv/oddebug.c @@ -0,0 +1,50 @@ +/* Name: oddebug.c + * Project: AVR library + * Author: Christian Starkjohann + * Creation Date: 2005-01-16 + * Tabsize: 4 + * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * This Revision: $Id: oddebug.c 275 2007-03-20 09:58:28Z cs $ + */ + +#include "oddebug.h" + +#if DEBUG_LEVEL > 0 + +#warning "Never compile production devices with debugging enabled" + +static void uartPutc(char c) +{ + while(!(ODDBG_USR & (1 << ODDBG_UDRE))); /* wait for data register empty */ + ODDBG_UDR = c; +} + +static uchar hexAscii(uchar h) +{ + h &= 0xf; + if(h >= 10) + h += 'a' - (uchar)10 - '0'; + h += '0'; + return h; +} + +static void printHex(uchar c) +{ + uartPutc(hexAscii(c >> 4)); + uartPutc(hexAscii(c)); +} + +void odDebug(uchar prefix, uchar *data, uchar len) +{ + printHex(prefix); + uartPutc(':'); + while(len--){ + uartPutc(' '); + printHex(*data++); + } + uartPutc('\r'); + uartPutc('\n'); +} + +#endif diff --git a/tools/usbload/usbdrv/oddebug.h b/tools/usbload/usbdrv/oddebug.h new file mode 100644 index 0000000..1b11ef0 --- /dev/null +++ b/tools/usbload/usbdrv/oddebug.h @@ -0,0 +1,126 @@ +/* Name: oddebug.h + * Project: AVR library + * Author: Christian Starkjohann + * Creation Date: 2005-01-16 + * Tabsize: 4 + * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * This Revision: $Id: oddebug.h 275 2007-03-20 09:58:28Z cs $ + */ + +#ifndef __oddebug_h_included__ +#define __oddebug_h_included__ + +/* +General Description: +This module implements a function for debug logs on the serial line of the +AVR microcontroller. Debugging can be configured with the define +'DEBUG_LEVEL'. If this macro is not defined or defined to 0, all debugging +calls are no-ops. If it is 1, DBG1 logs will appear, but not DBG2. If it is +2, DBG1 and DBG2 logs will be printed. + +A debug log consists of a label ('prefix') to indicate which debug log created +the output and a memory block to dump in hex ('data' and 'len'). +*/ + + +#ifndef F_CPU +# define F_CPU 12000000 /* 12 MHz */ +#endif + +/* make sure we have the UART defines: */ +#include "iarcompat.h" +#ifndef __IAR_SYSTEMS_ICC__ +# include +#endif + +#ifndef uchar +# define uchar unsigned char +#endif + +#if DEBUG_LEVEL > 0 && !(defined TXEN || defined TXEN0) /* no UART in device */ +# warning "Debugging disabled because device has no UART" +# undef DEBUG_LEVEL +#endif + +#ifndef DEBUG_LEVEL +# define DEBUG_LEVEL 0 +#endif + +/* ------------------------------------------------------------------------- */ + +#if DEBUG_LEVEL > 0 +# define DBG1(prefix, data, len) odDebug(prefix, data, len) +#else +# define DBG1(prefix, data, len) +#endif + +#if DEBUG_LEVEL > 1 +# define DBG2(prefix, data, len) odDebug(prefix, data, len) +#else +# define DBG2(prefix, data, len) +#endif + +/* ------------------------------------------------------------------------- */ + +#if DEBUG_LEVEL > 0 +extern void odDebug(uchar prefix, uchar *data, uchar len); + +/* Try to find our control registers; ATMEL likes to rename these */ + +#if defined UBRR +# define ODDBG_UBRR UBRR +#elif defined UBRRL +# define ODDBG_UBRR UBRRL +#elif defined UBRR0 +# define ODDBG_UBRR UBRR0 +#elif defined UBRR0L +# define ODDBG_UBRR UBRR0L +#endif + +#if defined UCR +# define ODDBG_UCR UCR +#elif defined UCSRB +# define ODDBG_UCR UCSRB +#elif defined UCSR0B +# define ODDBG_UCR UCSR0B +#endif + +#if defined TXEN +# define ODDBG_TXEN TXEN +#else +# define ODDBG_TXEN TXEN0 +#endif + +#if defined USR +# define ODDBG_USR USR +#elif defined UCSRA +# define ODDBG_USR UCSRA +#elif defined UCSR0A +# define ODDBG_USR UCSR0A +#endif + +#if defined UDRE +# define ODDBG_UDRE UDRE +#else +# define ODDBG_UDRE UDRE0 +#endif + +#if defined UDR +# define ODDBG_UDR UDR +#elif defined UDR0 +# define ODDBG_UDR UDR0 +#endif + +static inline void odDebugInit(void) +{ + ODDBG_UCR |= (1< +# include +#endif +#include "usbdrv.h" +#include "oddebug.h" + +/* +General Description: +This module implements the C-part of the USB driver. See usbdrv.h for a +documentation of the entire driver. +*/ + +/* ------------------------------------------------------------------------- */ + +/* raw USB registers / interface to assembler code: */ +uchar usbRxBuf[2*USB_BUFSIZE]; /* raw RX buffer: PID, 8 bytes data, 2 bytes CRC */ +uchar usbInputBufOffset; /* offset in usbRxBuf used for low level receiving */ +uchar usbDeviceAddr; /* assigned during enumeration, defaults to 0 */ +uchar usbNewDeviceAddr; /* device ID which should be set after status phase */ +uchar usbConfiguration; /* currently selected configuration. Administered by driver, but not used */ +volatile schar usbRxLen; /* = 0; number of bytes in usbRxBuf; 0 means free, -1 for flow control */ +uchar usbCurrentTok; /* last token received or endpoint number for last OUT token if != 0 */ +uchar usbRxToken; /* token for data we received; or endpont number for last OUT */ +volatile uchar usbTxLen = USBPID_NAK; /* number of bytes to transmit with next IN token or handshake token */ +uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbTxLen contains handshake token */ +#if USB_COUNT_SOF +volatile uchar usbSofCount; /* incremented by assembler module every SOF */ +#endif +#if USB_CFG_HAVE_INTRIN_ENDPOINT +usbTxStatus_t usbTxStatus1; +# if USB_CFG_HAVE_INTRIN_ENDPOINT3 +usbTxStatus_t usbTxStatus3; +# endif +#endif + +/* USB status registers / not shared with asm code */ +uchar *usbMsgPtr; /* data to transmit next -- ROM or RAM address */ +static usbMsgLen_t usbMsgLen = USB_NO_MSG; /* remaining number of bytes */ +static uchar usbMsgFlags; /* flag values see below */ + +#define USB_FLG_MSGPTR_IS_ROM (1<<6) +#define USB_FLG_USE_USER_RW (1<<7) + +/* +optimizing hints: +- do not post/pre inc/dec integer values in operations +- assign value of PRG_RDB() to register variables and don't use side effects in arg +- use narrow scope for variables which should be in X/Y/Z register +- assign char sized expressions to variables to force 8 bit arithmetics +*/ + +/* -------------------------- String Descriptors --------------------------- */ + +#if USB_CFG_DESCR_PROPS_STRINGS == 0 + +#if USB_CFG_DESCR_PROPS_STRING_0 == 0 +#undef USB_CFG_DESCR_PROPS_STRING_0 +#define USB_CFG_DESCR_PROPS_STRING_0 sizeof(usbDescriptorString0) +PROGMEM char usbDescriptorString0[] = { /* language descriptor */ + 4, /* sizeof(usbDescriptorString0): length of descriptor in bytes */ + 3, /* descriptor type */ + 0x09, 0x04, /* language index (0x0409 = US-English) */ +}; +#endif + +#if USB_CFG_DESCR_PROPS_STRING_VENDOR == 0 && USB_CFG_VENDOR_NAME_LEN +#undef USB_CFG_DESCR_PROPS_STRING_VENDOR +#define USB_CFG_DESCR_PROPS_STRING_VENDOR sizeof(usbDescriptorStringVendor) +PROGMEM int usbDescriptorStringVendor[] = { + USB_STRING_DESCRIPTOR_HEADER(USB_CFG_VENDOR_NAME_LEN), + USB_CFG_VENDOR_NAME +}; +#endif + +#if USB_CFG_DESCR_PROPS_STRING_PRODUCT == 0 && USB_CFG_DEVICE_NAME_LEN +#undef USB_CFG_DESCR_PROPS_STRING_PRODUCT +#define USB_CFG_DESCR_PROPS_STRING_PRODUCT sizeof(usbDescriptorStringDevice) +PROGMEM int usbDescriptorStringDevice[] = { + USB_STRING_DESCRIPTOR_HEADER(USB_CFG_DEVICE_NAME_LEN), + USB_CFG_DEVICE_NAME +}; +#endif + +#if USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER == 0 && USB_CFG_SERIAL_NUMBER_LEN +#undef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER +#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER sizeof(usbDescriptorStringSerialNumber) +PROGMEM int usbDescriptorStringSerialNumber[] = { + USB_STRING_DESCRIPTOR_HEADER(USB_CFG_SERIAL_NUMBER_LEN), + USB_CFG_SERIAL_NUMBER +}; +#endif + +#endif /* USB_CFG_DESCR_PROPS_STRINGS == 0 */ + +/* --------------------------- Device Descriptor --------------------------- */ + +#if USB_CFG_DESCR_PROPS_DEVICE == 0 +#undef USB_CFG_DESCR_PROPS_DEVICE +#define USB_CFG_DESCR_PROPS_DEVICE sizeof(usbDescriptorDevice) +PROGMEM char usbDescriptorDevice[] = { /* USB device descriptor */ + 18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */ + USBDESCR_DEVICE, /* descriptor type */ + 0x10, 0x01, /* USB version supported */ + USB_CFG_DEVICE_CLASS, + USB_CFG_DEVICE_SUBCLASS, + 0, /* protocol */ + 8, /* max packet size */ + /* the following two casts affect the first byte of the constant only, but + * that's sufficient to avoid a warning with the default values. + */ + (char)USB_CFG_VENDOR_ID,/* 2 bytes */ + (char)USB_CFG_DEVICE_ID,/* 2 bytes */ + USB_CFG_DEVICE_VERSION, /* 2 bytes */ + USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */ + USB_CFG_DESCR_PROPS_STRING_PRODUCT != 0 ? 2 : 0, /* product string index */ + USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */ + 1, /* number of configurations */ +}; +#endif + +/* ----------------------- Configuration Descriptor ------------------------ */ + +#if USB_CFG_DESCR_PROPS_HID_REPORT != 0 && USB_CFG_DESCR_PROPS_HID == 0 +#undef USB_CFG_DESCR_PROPS_HID +#define USB_CFG_DESCR_PROPS_HID 9 /* length of HID descriptor in config descriptor below */ +#endif + +#if USB_CFG_DESCR_PROPS_CONFIGURATION == 0 +#undef USB_CFG_DESCR_PROPS_CONFIGURATION +#define USB_CFG_DESCR_PROPS_CONFIGURATION sizeof(usbDescriptorConfiguration) +PROGMEM char usbDescriptorConfiguration[] = { /* USB configuration descriptor */ + 9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */ + USBDESCR_CONFIG, /* descriptor type */ + 18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 + + (USB_CFG_DESCR_PROPS_HID & 0xff), 0, + /* total length of data returned (including inlined descriptors) */ + 1, /* number of interfaces in this configuration */ + 1, /* index of this configuration */ + 0, /* configuration name string index */ +#if USB_CFG_IS_SELF_POWERED + USBATTR_SELFPOWER, /* attributes */ +#else + (char)USBATTR_BUSPOWER, /* attributes */ +#endif + USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */ +/* interface descriptor follows inline: */ + 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ + USBDESCR_INTERFACE, /* descriptor type */ + 0, /* index of this interface */ + 0, /* alternate setting for this interface */ + USB_CFG_HAVE_INTRIN_ENDPOINT + USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */ + USB_CFG_INTERFACE_CLASS, + USB_CFG_INTERFACE_SUBCLASS, + USB_CFG_INTERFACE_PROTOCOL, + 0, /* string index for interface */ +#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */ + 9, /* sizeof(usbDescrHID): length of descriptor in bytes */ + USBDESCR_HID, /* descriptor type: HID */ + 0x01, 0x01, /* BCD representation of HID version */ + 0x00, /* target country code */ + 0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */ + 0x22, /* descriptor type: report */ + USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */ +#endif +#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */ + 7, /* sizeof(usbDescrEndpoint) */ + USBDESCR_ENDPOINT, /* descriptor type = endpoint */ + (char)0x81, /* IN endpoint number 1 */ + 0x03, /* attrib: Interrupt endpoint */ + 8, 0, /* maximum packet size */ + USB_CFG_INTR_POLL_INTERVAL, /* in ms */ +#endif +#if USB_CFG_HAVE_INTRIN_ENDPOINT3 /* endpoint descriptor for endpoint 3 */ + 7, /* sizeof(usbDescrEndpoint) */ + USBDESCR_ENDPOINT, /* descriptor type = endpoint */ + (char)0x83, /* IN endpoint number 1 */ + 0x03, /* attrib: Interrupt endpoint */ + 8, 0, /* maximum packet size */ + USB_CFG_INTR_POLL_INTERVAL, /* in ms */ +#endif +}; +#endif + +/* ------------------------------------------------------------------------- */ + +/* We don't use prog_int or prog_int16_t for compatibility with various libc + * versions. Here's an other compatibility hack: + */ +#ifndef PRG_RDB +#define PRG_RDB(addr) pgm_read_byte(addr) +#endif + +/* ------------------------------------------------------------------------- */ + +static inline void usbResetDataToggling(void) +{ +#if USB_CFG_HAVE_INTRIN_ENDPOINT + USB_SET_DATATOKEN1(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */ +# if USB_CFG_HAVE_INTRIN_ENDPOINT3 + USB_SET_DATATOKEN3(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */ +# endif +#endif +} + +static inline void usbResetStall(void) +{ +#if USB_CFG_IMPLEMENT_HALT && USB_CFG_HAVE_INTRIN_ENDPOINT + usbTxLen1 = USBPID_NAK; +#if USB_CFG_HAVE_INTRIN_ENDPOINT3 + usbTxLen3 = USBPID_NAK; +#endif +#endif +} + +/* ------------------------------------------------------------------------- */ + +#if USB_CFG_HAVE_INTRIN_ENDPOINT +static void usbGenericSetInterrupt(uchar *data, uchar len, usbTxStatus_t *txStatus) +{ +uchar *p; +char i; + +#if USB_CFG_IMPLEMENT_HALT + if(usbTxLen1 == USBPID_STALL) + return; +#endif + if(txStatus->len & 0x10){ /* packet buffer was empty */ + txStatus->buffer[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */ + }else{ + txStatus->len = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */ + } + p = txStatus->buffer + 1; + i = len; + do{ /* if len == 0, we still copy 1 byte, but that's no problem */ + *p++ = *data++; + }while(--i > 0); /* loop control at the end is 2 bytes shorter than at beginning */ + usbCrc16Append(&txStatus->buffer[1], len); + txStatus->len = len + 4; /* len must be given including sync byte */ + DBG2(0x21 + (((int)txStatus >> 3) & 3), txStatus->buffer, len + 3); +} + +USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len) +{ + usbGenericSetInterrupt(data, len, &usbTxStatus1); +} +#endif + +#if USB_CFG_HAVE_INTRIN_ENDPOINT3 +USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len) +{ + usbGenericSetInterrupt(data, len, &usbTxStatus3); +} +#endif + +/* ------------------ utilities for code following below ------------------- */ + +/* Use defines for the switch statement so that we can choose between an + * if()else if() and a switch/case based implementation. switch() is more + * efficient for a LARGE set of sequential choices, if() is better in all other + * cases. + */ +#if USB_CFG_USE_SWITCH_STATEMENT +# define SWITCH_START(cmd) switch(cmd){{ +# define SWITCH_CASE(value) }break; case (value):{ +# define SWITCH_CASE2(v1,v2) }break; case (v1): case(v2):{ +# define SWITCH_CASE3(v1,v2,v3) }break; case (v1): case(v2): case(v3):{ +# define SWITCH_DEFAULT }break; default:{ +# define SWITCH_END }} +#else +# define SWITCH_START(cmd) {uchar _cmd = cmd; if(0){ +# define SWITCH_CASE(value) }else if(_cmd == (value)){ +# define SWITCH_CASE2(v1,v2) }else if(_cmd == (v1) || _cmd == (v2)){ +# define SWITCH_CASE3(v1,v2,v3) }else if(_cmd == (v1) || _cmd == (v2) || (_cmd == v3)){ +# define SWITCH_DEFAULT }else{ +# define SWITCH_END }} +#endif + +#ifndef USB_RX_USER_HOOK +#define USB_RX_USER_HOOK(data, len) +#endif +#ifndef USB_SET_ADDRESS_HOOK +#define USB_SET_ADDRESS_HOOK() +#endif + +/* ------------------------------------------------------------------------- */ + +/* We use if() instead of #if in the macro below because #if can't be used + * in macros and the compiler optimizes constant conditions anyway. + * This may cause problems with undefined symbols if compiled without + * optimizing! + */ +#define GET_DESCRIPTOR(cfgProp, staticName) \ + if(cfgProp){ \ + if((cfgProp) & USB_PROP_IS_RAM) \ + flags = 0; \ + if((cfgProp) & USB_PROP_IS_DYNAMIC){ \ + len = usbFunctionDescriptor(rq); \ + }else{ \ + len = USB_PROP_LENGTH(cfgProp); \ + usbMsgPtr = (uchar *)(staticName); \ + } \ + } + +/* usbDriverDescriptor() is similar to usbFunctionDescriptor(), but used + * internally for all types of descriptors. + */ +static inline usbMsgLen_t usbDriverDescriptor(usbRequest_t *rq) +{ +usbMsgLen_t len = 0; +uchar flags = USB_FLG_MSGPTR_IS_ROM; + + SWITCH_START(rq->wValue.bytes[1]) + SWITCH_CASE(USBDESCR_DEVICE) /* 1 */ + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_DEVICE, usbDescriptorDevice) + SWITCH_CASE(USBDESCR_CONFIG) /* 2 */ + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_CONFIGURATION, usbDescriptorConfiguration) + SWITCH_CASE(USBDESCR_STRING) /* 3 */ +#if USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC + if(USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_RAM) + flags = 0; + len = usbFunctionDescriptor(rq); +#else /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ + SWITCH_START(rq->wValue.bytes[0]) + SWITCH_CASE(0) + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_0, usbDescriptorString0) + SWITCH_CASE(1) + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_VENDOR, usbDescriptorStringVendor) + SWITCH_CASE(2) + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_PRODUCT, usbDescriptorStringDevice) + SWITCH_CASE(3) + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER, usbDescriptorStringSerialNumber) + SWITCH_DEFAULT + if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ + len = usbFunctionDescriptor(rq); + } + SWITCH_END +#endif /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */ +#if USB_CFG_DESCR_PROPS_HID_REPORT /* only support HID descriptors if enabled */ + SWITCH_CASE(USBDESCR_HID) /* 0x21 */ + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID, usbDescriptorConfiguration + 18) + SWITCH_CASE(USBDESCR_HID_REPORT)/* 0x22 */ + GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID_REPORT, usbDescriptorHidReport) +#endif + SWITCH_DEFAULT + if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){ + len = usbFunctionDescriptor(rq); + } + SWITCH_END + usbMsgFlags = flags; + return len; +} + +/* ------------------------------------------------------------------------- */ + +/* usbDriverSetup() is similar to usbFunctionSetup(), but it's used for + * standard requests instead of class and custom requests. + */ +static inline usbMsgLen_t usbDriverSetup(usbRequest_t *rq) +{ +uchar len = 0, *dataPtr = usbTxBuf + 9; /* there are 2 bytes free space at the end of the buffer */ +uchar value = rq->wValue.bytes[0]; +#if USB_CFG_IMPLEMENT_HALT +uchar index = rq->wIndex.bytes[0]; +#endif + + dataPtr[0] = 0; /* default reply common to USBRQ_GET_STATUS and USBRQ_GET_INTERFACE */ + SWITCH_START(rq->bRequest) + SWITCH_CASE(USBRQ_GET_STATUS) /* 0 */ + uchar recipient = rq->bmRequestType & USBRQ_RCPT_MASK; /* assign arith ops to variables to enforce byte size */ + if(USB_CFG_IS_SELF_POWERED && recipient == USBRQ_RCPT_DEVICE) + dataPtr[0] = USB_CFG_IS_SELF_POWERED; +#if USB_CFG_IMPLEMENT_HALT + if(recipient == USBRQ_RCPT_ENDPOINT && index == 0x81) /* request status for endpoint 1 */ + dataPtr[0] = usbTxLen1 == USBPID_STALL; +#endif + dataPtr[1] = 0; + len = 2; +#if USB_CFG_IMPLEMENT_HALT + SWITCH_CASE2(USBRQ_CLEAR_FEATURE, USBRQ_SET_FEATURE) /* 1, 3 */ + if(value == 0 && index == 0x81){ /* feature 0 == HALT for endpoint == 1 */ + usbTxLen1 = rq->bRequest == USBRQ_CLEAR_FEATURE ? USBPID_NAK : USBPID_STALL; + usbResetDataToggling(); + } +#endif + SWITCH_CASE(USBRQ_SET_ADDRESS) /* 5 */ + usbNewDeviceAddr = value; + USB_SET_ADDRESS_HOOK(); + SWITCH_CASE(USBRQ_GET_DESCRIPTOR) /* 6 */ + len = usbDriverDescriptor(rq); + goto skipMsgPtrAssignment; + SWITCH_CASE(USBRQ_GET_CONFIGURATION) /* 8 */ + dataPtr = &usbConfiguration; /* send current configuration value */ + len = 1; + SWITCH_CASE(USBRQ_SET_CONFIGURATION) /* 9 */ + usbConfiguration = value; + usbResetStall(); + SWITCH_CASE(USBRQ_GET_INTERFACE) /* 10 */ + len = 1; +#if USB_CFG_HAVE_INTRIN_ENDPOINT + SWITCH_CASE(USBRQ_SET_INTERFACE) /* 11 */ + usbResetDataToggling(); + usbResetStall(); +#endif + SWITCH_DEFAULT /* 7=SET_DESCRIPTOR, 12=SYNC_FRAME */ + /* Should we add an optional hook here? */ + SWITCH_END + usbMsgPtr = dataPtr; +skipMsgPtrAssignment: + return len; +} + +/* ------------------------------------------------------------------------- */ + +/* usbProcessRx() is called for every message received by the interrupt + * routine. It distinguishes between SETUP and DATA packets and processes + * them accordingly. + */ +static inline void usbProcessRx(uchar *data, uchar len) +{ +usbRequest_t *rq = (void *)data; + +/* usbRxToken can be: + * 0x2d 00101101 (USBPID_SETUP for setup data) + * 0xe1 11100001 (USBPID_OUT: data phase of setup transfer) + * 0...0x0f for OUT on endpoint X + */ + DBG2(0x10 + (usbRxToken & 0xf), data, len); /* SETUP=1d, SETUP-DATA=11, OUTx=1x */ + USB_RX_USER_HOOK(data, len) +#if USB_CFG_IMPLEMENT_FN_WRITEOUT + if(usbRxToken < 0x10){ /* OUT to endpoint != 0: endpoint number in usbRxToken */ + usbFunctionWriteOut(data, len); + return; + } +#endif + if(usbRxToken == (uchar)USBPID_SETUP){ + if(len != 8) /* Setup size must be always 8 bytes. Ignore otherwise. */ + return; + usbMsgLen_t replyLen; + usbTxBuf[0] = USBPID_DATA0; /* initialize data toggling */ + usbTxLen = USBPID_NAK; /* abort pending transmit */ + usbMsgFlags = 0; + uchar type = rq->bmRequestType & USBRQ_TYPE_MASK; + if(type != USBRQ_TYPE_STANDARD){ /* standard requests are handled by driver */ + replyLen = usbFunctionSetup(data); + }else{ + replyLen = usbDriverSetup(rq); + } +#if USB_CFG_IMPLEMENT_FN_READ || USB_CFG_IMPLEMENT_FN_WRITE + if(replyLen == USB_NO_MSG){ /* use user-supplied read/write function */ + /* do some conditioning on replyLen */ + if((rq->bmRequestType & USBRQ_DIR_MASK) != USBRQ_DIR_HOST_TO_DEVICE){ + replyLen = rq->wLength.bytes[0]; /* IN transfers only */ + } + usbMsgFlags = USB_FLG_USE_USER_RW; + }else /* The 'else' prevents that we limit a replyLen of USB_NO_MSG to the maximum transfer len. */ +#endif + if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */ + if(!rq->wLength.bytes[1] && replyLen > rq->wLength.bytes[0]) /* limit length to max */ + replyLen = rq->wLength.bytes[0]; + }else{ + if(replyLen > rq->wLength.word) /* limit length to max */ + replyLen = rq->wLength.word; + } + usbMsgLen = replyLen; + }else{ /* usbRxToken must be USBPID_OUT, which means data phase of setup (control-out) */ +#if USB_CFG_IMPLEMENT_FN_WRITE + if(usbMsgFlags & USB_FLG_USE_USER_RW){ + uchar rval = usbFunctionWrite(data, len); + if(rval == 0xff){ /* an error occurred */ + usbTxLen = USBPID_STALL; + }else if(rval != 0){ /* This was the final package */ + usbMsgLen = 0; /* answer with a zero-sized data packet */ + } + } +#endif + } +} + +/* ------------------------------------------------------------------------- */ + +/* This function is similar to usbFunctionRead(), but it's also called for + * data handled automatically by the driver (e.g. descriptor reads). + */ +static uchar usbDeviceRead(uchar *data, uchar len) +{ + if(len > 0){ /* don't bother app with 0 sized reads */ +#if USB_CFG_IMPLEMENT_FN_READ + if(usbMsgFlags & USB_FLG_USE_USER_RW){ + len = usbFunctionRead(data, len); + }else +#endif + { + uchar i = len, *r = usbMsgPtr; + if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */ + do{ + uchar c = PRG_RDB(r); /* assign to char size variable to enforce byte ops */ + *data++ = c; + r++; + }while(--i); + }else{ /* RAM data */ + do{ + *data++ = *r++; + }while(--i); + } + usbMsgPtr = r; + } + } + return len; +} + +/* ------------------------------------------------------------------------- */ + +/* usbBuildTxBlock() is called when we have data to transmit and the + * interrupt routine's transmit buffer is empty. + */ +static inline void usbBuildTxBlock(void) +{ +usbMsgLen_t wantLen; +uchar len; + + wantLen = usbMsgLen; + if(wantLen > 8) + wantLen = 8; + usbMsgLen -= wantLen; + usbTxBuf[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* DATA toggling */ + len = usbDeviceRead(usbTxBuf + 1, wantLen); + if(len <= 8){ /* valid data packet */ + usbCrc16Append(&usbTxBuf[1], len); + len += 4; /* length including sync byte */ + if(len < 12) /* a partial package identifies end of message */ + usbMsgLen = USB_NO_MSG; + }else{ + len = USBPID_STALL; /* stall the endpoint */ + usbMsgLen = USB_NO_MSG; + } + usbTxLen = len; + DBG2(0x20, usbTxBuf, len-1); +} + +/* ------------------------------------------------------------------------- */ + +static inline void usbHandleResetHook(uchar notResetState) +{ +#ifdef USB_RESET_HOOK +static uchar wasReset; +uchar isReset = !notResetState; + + if(wasReset != isReset){ + USB_RESET_HOOK(isReset); + wasReset = isReset; + } +#endif +} + +/* ------------------------------------------------------------------------- */ + +USB_PUBLIC void usbPoll(void) +{ +schar len; +uchar i; + + len = usbRxLen - 3; + if(len >= 0){ +/* We could check CRC16 here -- but ACK has already been sent anyway. If you + * need data integrity checks with this driver, check the CRC in your app + * code and report errors back to the host. Since the ACK was already sent, + * retries must be handled on application level. + * unsigned crc = usbCrc16(buffer + 1, usbRxLen - 3); + */ + usbProcessRx(usbRxBuf + USB_BUFSIZE + 1 - usbInputBufOffset, len); +#if USB_CFG_HAVE_FLOWCONTROL + if(usbRxLen > 0) /* only mark as available if not inactivated */ + usbRxLen = 0; +#else + usbRxLen = 0; /* mark rx buffer as available */ +#endif + } + if(usbTxLen & 0x10){ /* transmit system idle */ + if(usbMsgLen != USB_NO_MSG){ /* transmit data pending? */ + usbBuildTxBlock(); + } + } + for(i = 10; i > 0; i--){ + uchar usbLineStatus = USBIN & USBMASK; + if(usbLineStatus != 0) /* SE0 has ended */ + break; + } + if(i == 0){ /* RESET condition, called multiple times during reset */ + usbNewDeviceAddr = 0; + usbDeviceAddr = 0; + usbResetStall(); + DBG1(0xff, 0, 0); + } + usbHandleResetHook(i); +} + +/* ------------------------------------------------------------------------- */ + +USB_PUBLIC void usbInit(void) +{ +#if USB_INTR_CFG_SET != 0 + USB_INTR_CFG |= USB_INTR_CFG_SET; +#endif +#if USB_INTR_CFG_CLR != 0 + USB_INTR_CFG &= ~(USB_INTR_CFG_CLR); +#endif + USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT); + usbResetDataToggling(); +#if USB_CFG_HAVE_INTRIN_ENDPOINT + usbTxLen1 = USBPID_NAK; +#if USB_CFG_HAVE_INTRIN_ENDPOINT3 + usbTxLen3 = USBPID_NAK; +#endif +#endif +} + +/* ------------------------------------------------------------------------- */ diff --git a/tools/usbload/usbdrv/usbdrv.h b/tools/usbload/usbdrv/usbdrv.h new file mode 100644 index 0000000..ca7392f --- /dev/null +++ b/tools/usbload/usbdrv/usbdrv.h @@ -0,0 +1,712 @@ +/* Name: usbdrv.h + * Project: AVR USB driver + * Author: Christian Starkjohann + * Creation Date: 2004-12-29 + * Tabsize: 4 + * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * This Revision: $Id: usbdrv.h 607 2008-05-13 15:57:28Z cs $ + */ + +#ifndef __usbdrv_h_included__ +#define __usbdrv_h_included__ +#include "usbconfig.h" +#include "iarcompat.h" + +/* +Hardware Prerequisites: +======================= +USB lines D+ and D- MUST be wired to the same I/O port. We recommend that D+ +triggers the interrupt (best achieved by using INT0 for D+), but it is also +possible to trigger the interrupt from D-. If D- is used, interrupts are also +triggered by SOF packets. D- requires a pull-up of 1.5k to +3.5V (and the +device must be powered at 3.5V) to identify as low-speed USB device. A +pull-down or pull-up of 1M SHOULD be connected from D+ to +3.5V to prevent +interference when no USB master is connected. If you use Zener diodes to limit +the voltage on D+ and D-, you MUST use a pull-down resistor, not a pull-up. +We use D+ as interrupt source and not D- because it does not trigger on +keep-alive and RESET states. If you want to count keep-alive events with +USB_COUNT_SOF, you MUST use D- as an interrupt source. + +As a compile time option, the 1.5k pull-up resistor on D- can be made +switchable to allow the device to disconnect at will. See the definition of +usbDeviceConnect() and usbDeviceDisconnect() further down in this file. + +Please adapt the values in usbconfig.h according to your hardware! + +The device MUST be clocked at exactly 12 MHz, 15 MHz or 16 MHz +or at 16.5 MHz +/- 1%. See usbconfig-prototype.h for details. + + +Limitations: +============ +Robustness with respect to communication errors: +The driver assumes error-free communication. It DOES check for errors in +the PID, but does NOT check bit stuffing errors, SE0 in middle of a byte, +token CRC (5 bit) and data CRC (16 bit). CRC checks can not be performed due +to timing constraints: We must start sending a reply within 7 bit times. +Bit stuffing and misplaced SE0 would have to be checked in real-time, but CPU +performance does not permit that. The driver does not check Data0/Data1 +toggling, but application software can implement the check. + +Input characteristics: +Since no differential receiver circuit is used, electrical interference +robustness may suffer. The driver samples only one of the data lines with +an ordinary I/O pin's input characteristics. However, since this is only a +low speed USB implementation and the specification allows for 8 times the +bit rate over the same hardware, we should be on the safe side. Even the spec +requires detection of asymmetric states at high bit rate for SE0 detection. + +Number of endpoints: +The driver supports the following endpoints: + +- Endpoint 0, the default control endpoint. +- Any number of interrupt- or bulk-out endpoints. The data is sent to + usbFunctionWriteOut() and USB_CFG_IMPLEMENT_FN_WRITEOUT must be defined + to 1 to activate this feature. The endpoint number can be found in the + global variable 'usbRxToken'. +- One default interrupt- or bulk-in endpoint. This endpoint is used for + interrupt- or bulk-in transfers which are not handled by any other endpoint. + You must define USB_CFG_HAVE_INTRIN_ENDPOINT in order to activate this + feature and call usbSetInterrupt() to send interrupt/bulk data. +- One additional interrupt- or bulk-in endpoint. This was endpoint 3 in + previous versions of this driver but can now be configured to any endpoint + number. You must define USB_CFG_HAVE_INTRIN_ENDPOINT3 in order to activate + this feature and call usbSetInterrupt3() to send interrupt/bulk data. The + endpoint number can be set with USB_CFG_EP3_NUMBER. + +Please note that the USB standard forbids bulk endpoints for low speed devices! +Most operating systems allow them anyway, but the AVR will spend 90% of the CPU +time in the USB interrupt polling for bulk data. + +Maximum data payload: +Data payload of control in and out transfers may be up to 254 bytes. In order +to accept payload data of out transfers, you need to implement +'usbFunctionWrite()'. + +USB Suspend Mode supply current: +The USB standard limits power consumption to 500uA when the bus is in suspend +mode. This is not a problem for self-powered devices since they don't need +bus power anyway. Bus-powered devices can achieve this only by putting the +CPU in sleep mode. The driver does not implement suspend handling by itself. +However, the application may implement activity monitoring and wakeup from +sleep. The host sends regular SE0 states on the bus to keep it active. These +SE0 states can be detected by using D- as the interrupt source. Define +USB_COUNT_SOF to 1 and use the global variable usbSofCount to check for bus +activity. + +Operation without an USB master: +The driver behaves neutral without connection to an USB master if D- reads +as 1. To avoid spurious interrupts, we recommend a high impedance (e.g. 1M) +pull-down or pull-up resistor on D+ (interrupt). If Zener diodes are used, +use a pull-down. If D- becomes statically 0, the driver may block in the +interrupt routine. + +Interrupt latency: +The application must ensure that the USB interrupt is not disabled for more +than 25 cycles (this is for 12 MHz, faster clocks allow longer latency). +This implies that all interrupt routines must either be declared as "INTERRUPT" +instead of "SIGNAL" (see "avr/signal.h") or that they are written in assembler +with "sei" as the first instruction. + +Maximum interrupt duration / CPU cycle consumption: +The driver handles all USB communication during the interrupt service +routine. The routine will not return before an entire USB message is received +and the reply is sent. This may be up to ca. 1200 cycles @ 12 MHz (= 100us) if +the host conforms to the standard. The driver will consume CPU cycles for all +USB messages, even if they address another (low-speed) device on the same bus. + +*/ + +/* ------------------------------------------------------------------------- */ +/* --------------------------- Module Interface ---------------------------- */ +/* ------------------------------------------------------------------------- */ + +#define USBDRV_VERSION 20080513 +/* This define uniquely identifies a driver version. It is a decimal number + * constructed from the driver's release date in the form YYYYMMDD. If the + * driver's behavior or interface changes, you can use this constant to + * distinguish versions. If it is not defined, the driver's release date is + * older than 2006-01-25. + */ + + +#ifndef USB_PUBLIC +#define USB_PUBLIC +#endif +/* USB_PUBLIC is used as declaration attribute for all functions exported by + * the USB driver. The default is no attribute (see above). You may define it + * to static either in usbconfig.h or from the command line if you include + * usbdrv.c instead of linking against it. Including the C module of the driver + * directly in your code saves a couple of bytes in flash memory. + */ + +#ifndef __ASSEMBLER__ +#ifndef uchar +#define uchar unsigned char +#endif +#ifndef schar +#define schar signed char +#endif +/* shortcuts for well defined 8 bit integer types */ + +#if USB_CFG_LONG_TRANSFERS /* if more than 254 bytes transfer size required */ +# define usbMsgLen_t unsigned +#else +# define usbMsgLen_t uchar +#endif +/* usbMsgLen_t is the data type used for transfer lengths. By default, it is + * defined to uchar, allowing a maximum of 254 bytes (255 is reserved for + * USB_NO_MSG below). If the usbconfig.h defines USB_CFG_LONG_TRANSFERS to 1, + * a 16 bit data type is used, allowing up to 16384 bytes (the rest is used + * for flags in the descriptor configuration). + */ +#define USB_NO_MSG ((usbMsgLen_t)-1) /* constant meaning "no message" */ + +struct usbRequest; /* forward declaration */ + +USB_PUBLIC void usbInit(void); +/* This function must be called before interrupts are enabled and the main + * loop is entered. + */ +USB_PUBLIC void usbPoll(void); +/* This function must be called at regular intervals from the main loop. + * Maximum delay between calls is somewhat less than 50ms (USB timeout for + * accepting a Setup message). Otherwise the device will not be recognized. + * Please note that debug outputs through the UART take ~ 0.5ms per byte + * at 19200 bps. + */ +extern uchar *usbMsgPtr; +/* This variable may be used to pass transmit data to the driver from the + * implementation of usbFunctionWrite(). It is also used internally by the + * driver for standard control requests. + */ +USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8]); +/* This function is called when the driver receives a SETUP transaction from + * the host which is not answered by the driver itself (in practice: class and + * vendor requests). All control transfers start with a SETUP transaction where + * the host communicates the parameters of the following (optional) data + * transfer. The SETUP data is available in the 'data' parameter which can + * (and should) be casted to 'usbRequest_t *' for a more user-friendly access + * to parameters. + * + * If the SETUP indicates a control-in transfer, you should provide the + * requested data to the driver. There are two ways to transfer this data: + * (1) Set the global pointer 'usbMsgPtr' to the base of the static RAM data + * block and return the length of the data in 'usbFunctionSetup()'. The driver + * will handle the rest. Or (2) return USB_NO_MSG in 'usbFunctionSetup()'. The + * driver will then call 'usbFunctionRead()' when data is needed. See the + * documentation for usbFunctionRead() for details. + * + * If the SETUP indicates a control-out transfer, the only way to receive the + * data from the host is through the 'usbFunctionWrite()' call. If you + * implement this function, you must return USB_NO_MSG in 'usbFunctionSetup()' + * to indicate that 'usbFunctionWrite()' should be used. See the documentation + * of this function for more information. If you just want to ignore the data + * sent by the host, return 0 in 'usbFunctionSetup()'. + * + * Note that calls to the functions usbFunctionRead() and usbFunctionWrite() + * are only done if enabled by the configuration in usbconfig.h. + */ +USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq); +/* You need to implement this function ONLY if you provide USB descriptors at + * runtime (which is an expert feature). It is very similar to + * usbFunctionSetup() above, but it is called only to request USB descriptor + * data. See the documentation of usbFunctionSetup() above for more info. + */ +#if USB_CFG_HAVE_INTRIN_ENDPOINT +USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len); +/* This function sets the message which will be sent during the next interrupt + * IN transfer. The message is copied to an internal buffer and must not exceed + * a length of 8 bytes. The message may be 0 bytes long just to indicate the + * interrupt status to the host. + * If you need to transfer more bytes, use a control read after the interrupt. + */ +#define usbInterruptIsReady() (usbTxLen1 & 0x10) +/* This macro indicates whether the last interrupt message has already been + * sent. If you set a new interrupt message before the old was sent, the + * message already buffered will be lost. + */ +#if USB_CFG_HAVE_INTRIN_ENDPOINT3 +USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len); +#define usbInterruptIsReady3() (usbTxLen3 & 0x10) +/* Same as above for endpoint 3 */ +#endif +#endif /* USB_CFG_HAVE_INTRIN_ENDPOINT */ +#if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* simplified interface for backward compatibility */ +#define usbHidReportDescriptor usbDescriptorHidReport +/* should be declared as: PROGMEM char usbHidReportDescriptor[]; */ +/* If you implement an HID device, you need to provide a report descriptor. + * The HID report descriptor syntax is a bit complex. If you understand how + * report descriptors are constructed, we recommend that you use the HID + * Descriptor Tool from usb.org, see http://www.usb.org/developers/hidpage/. + * Otherwise you should probably start with a working example. + */ +#endif /* USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH */ +#if USB_CFG_IMPLEMENT_FN_WRITE +USB_PUBLIC uchar usbFunctionWrite(uchar *data, uchar len); +/* This function is called by the driver to provide a control transfer's + * payload data (control-out). It is called in chunks of up to 8 bytes. The + * total count provided in the current control transfer can be obtained from + * the 'length' property in the setup data. If an error occurred during + * processing, return 0xff (== -1). The driver will answer the entire transfer + * with a STALL token in this case. If you have received the entire payload + * successfully, return 1. If you expect more data, return 0. If you don't + * know whether the host will send more data (you should know, the total is + * provided in the usbFunctionSetup() call!), return 1. + * NOTE: If you return 0xff for STALL, 'usbFunctionWrite()' may still be called + * for the remaining data. You must continue to return 0xff for STALL in these + * calls. + * In order to get usbFunctionWrite() called, define USB_CFG_IMPLEMENT_FN_WRITE + * to 1 in usbconfig.h and return 0xff in usbFunctionSetup().. + */ +#endif /* USB_CFG_IMPLEMENT_FN_WRITE */ +#if USB_CFG_IMPLEMENT_FN_READ +USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len); +/* This function is called by the driver to ask the application for a control + * transfer's payload data (control-in). It is called in chunks of up to 8 + * bytes each. You should copy the data to the location given by 'data' and + * return the actual number of bytes copied. If you return less than requested, + * the control-in transfer is terminated. If you return 0xff, the driver aborts + * the transfer with a STALL token. + * In order to get usbFunctionRead() called, define USB_CFG_IMPLEMENT_FN_READ + * to 1 in usbconfig.h and return 0xff in usbFunctionSetup().. + */ +#endif /* USB_CFG_IMPLEMENT_FN_READ */ +#if USB_CFG_IMPLEMENT_FN_WRITEOUT +USB_PUBLIC void usbFunctionWriteOut(uchar *data, uchar len); +/* This function is called by the driver when data is received on an interrupt- + * or bulk-out endpoint. The endpoint number can be found in the global + * variable usbRxToken. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT to 1 in + * usbconfig.h to get this function called. + */ +#endif /* USB_CFG_IMPLEMENT_FN_WRITEOUT */ +#ifdef USB_CFG_PULLUP_IOPORTNAME +#define usbDeviceConnect() ((USB_PULLUP_DDR |= (1<device, 1=device->host + * t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved + * r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other + */ + +/* USB setup recipient values */ +#define USBRQ_RCPT_MASK 0x1f +#define USBRQ_RCPT_DEVICE 0 +#define USBRQ_RCPT_INTERFACE 1 +#define USBRQ_RCPT_ENDPOINT 2 + +/* USB request type values */ +#define USBRQ_TYPE_MASK 0x60 +#define USBRQ_TYPE_STANDARD (0<<5) +#define USBRQ_TYPE_CLASS (1<<5) +#define USBRQ_TYPE_VENDOR (2<<5) + +/* USB direction values: */ +#define USBRQ_DIR_MASK 0x80 +#define USBRQ_DIR_HOST_TO_DEVICE (0<<7) +#define USBRQ_DIR_DEVICE_TO_HOST (1<<7) + +/* USB Standard Requests */ +#define USBRQ_GET_STATUS 0 +#define USBRQ_CLEAR_FEATURE 1 +#define USBRQ_SET_FEATURE 3 +#define USBRQ_SET_ADDRESS 5 +#define USBRQ_GET_DESCRIPTOR 6 +#define USBRQ_SET_DESCRIPTOR 7 +#define USBRQ_GET_CONFIGURATION 8 +#define USBRQ_SET_CONFIGURATION 9 +#define USBRQ_GET_INTERFACE 10 +#define USBRQ_SET_INTERFACE 11 +#define USBRQ_SYNCH_FRAME 12 + +/* USB descriptor constants */ +#define USBDESCR_DEVICE 1 +#define USBDESCR_CONFIG 2 +#define USBDESCR_STRING 3 +#define USBDESCR_INTERFACE 4 +#define USBDESCR_ENDPOINT 5 +#define USBDESCR_HID 0x21 +#define USBDESCR_HID_REPORT 0x22 +#define USBDESCR_HID_PHYS 0x23 + +#define USBATTR_BUSPOWER 0x80 +#define USBATTR_SELFPOWER 0x40 +#define USBATTR_REMOTEWAKE 0x20 + +/* USB HID Requests */ +#define USBRQ_HID_GET_REPORT 0x01 +#define USBRQ_HID_GET_IDLE 0x02 +#define USBRQ_HID_GET_PROTOCOL 0x03 +#define USBRQ_HID_SET_REPORT 0x09 +#define USBRQ_HID_SET_IDLE 0x0a +#define USBRQ_HID_SET_PROTOCOL 0x0b + +/* ------------------------------------------------------------------------- */ + +#endif /* __usbdrv_h_included__ */ diff --git a/tools/usbload/usbdrv/usbdrvasm.S b/tools/usbload/usbdrv/usbdrvasm.S new file mode 100644 index 0000000..2c06421 --- /dev/null +++ b/tools/usbload/usbdrv/usbdrvasm.S @@ -0,0 +1,314 @@ +/* Name: usbdrvasm.S + * Project: AVR USB driver + * Author: Christian Starkjohann + * Creation Date: 2007-06-13 + * Tabsize: 4 + * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * Revision: $Id$ + */ + +/* +General Description: +This module is the assembler part of the USB driver. This file contains +general code (preprocessor acrobatics and CRC computation) and then includes +the file appropriate for the given clock rate. +*/ + +#include "iarcompat.h" +#ifndef __IAR_SYSTEMS_ASM__ + /* configs for io.h */ +# define __SFR_OFFSET 0 +# define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */ +# include /* for CPU I/O register definitions and vectors */ +# define macro .macro /* GNU Assembler macro definition */ +# define endm .endm /* End of GNU Assembler macro definition */ +#endif /* __IAR_SYSTEMS_ASM__ */ +#include "usbdrv.h" /* for common defs */ + +/* register names */ +#define x1 r16 +#define x2 r17 +#define shift r18 +#define cnt r19 +#define x3 r20 +#define x4 r21 +#define bitcnt r22 +#define phase x4 +#define leap x4 + +/* Some assembler dependent definitions and declarations: */ + +#ifdef __IAR_SYSTEMS_ASM__ + +# define nop2 rjmp $+2 /* jump to next instruction */ +# define XL r26 +# define XH r27 +# define YL r28 +# define YH r29 +# define ZL r30 +# define ZH r31 +# define lo8(x) LOW(x) +# define hi8(x) (((x)>>8) & 0xff) /* not HIGH to allow XLINK to make a proper range check */ + + extern usbRxBuf, usbDeviceAddr, usbNewDeviceAddr, usbInputBufOffset + extern usbCurrentTok, usbRxLen, usbRxToken, usbTxLen + extern usbTxBuf, usbTxStatus1, usbTxStatus3 +# if USB_COUNT_SOF + extern usbSofCount +# endif + public usbCrc16 + public usbCrc16Append + + COMMON INTVEC +# ifndef USB_INTR_VECTOR + ORG INT0_vect +# else /* USB_INTR_VECTOR */ + ORG USB_INTR_VECTOR +# undef USB_INTR_VECTOR +# endif /* USB_INTR_VECTOR */ +# define USB_INTR_VECTOR usbInterruptHandler + rjmp USB_INTR_VECTOR + RSEG CODE + +#else /* __IAR_SYSTEMS_ASM__ */ + +# define nop2 rjmp .+0 /* jump to next instruction */ + +# ifndef USB_INTR_VECTOR /* default to hardware interrupt INT0 */ +# define USB_INTR_VECTOR SIG_INTERRUPT0 +# endif + .text + .global USB_INTR_VECTOR + .type USB_INTR_VECTOR, @function + .global usbCrc16 + .global usbCrc16Append +#endif /* __IAR_SYSTEMS_ASM__ */ + + +#if USB_INTR_PENDING < 0x40 /* This is an I/O address, use in and out */ +# define USB_LOAD_PENDING(reg) in reg, USB_INTR_PENDING +# define USB_STORE_PENDING(reg) out USB_INTR_PENDING, reg +#else /* It's a memory address, use lds and sts */ +# define USB_LOAD_PENDING(reg) lds reg, USB_INTR_PENDING +# define USB_STORE_PENDING(reg) sts USB_INTR_PENDING, reg +#endif + +#define usbTxLen1 usbTxStatus1 +#define usbTxBuf1 (usbTxStatus1 + 1) +#define usbTxLen3 usbTxStatus3 +#define usbTxBuf3 (usbTxStatus3 + 1) + + +;---------------------------------------------------------------------------- +; Utility functions +;---------------------------------------------------------------------------- + +#ifdef __IAR_SYSTEMS_ASM__ +/* Register assignments for usbCrc16 on IAR cc */ +/* Calling conventions on IAR: + * First parameter passed in r16/r17, second in r18/r19 and so on. + * Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer) + * Result is passed in r16/r17 + * In case of the "tiny" memory model, pointers are only 8 bit with no + * padding. We therefore pass argument 1 as "16 bit unsigned". + */ +RTMODEL "__rt_version", "3" +/* The line above will generate an error if cc calling conventions change. + * The value "3" above is valid for IAR 4.10B/W32 + */ +# define argLen r18 /* argument 2 */ +# define argPtrL r16 /* argument 1 */ +# define argPtrH r17 /* argument 1 */ + +# define resCrcL r16 /* result */ +# define resCrcH r17 /* result */ + +# define ptrL ZL +# define ptrH ZH +# define ptr Z +# define byte r22 +# define bitCnt r19 +# define polyL r20 +# define polyH r21 +# define scratch r23 + +#else /* __IAR_SYSTEMS_ASM__ */ +/* Register assignments for usbCrc16 on gcc */ +/* Calling conventions on gcc: + * First parameter passed in r24/r25, second in r22/23 and so on. + * Callee must preserve r1-r17, r28/r29 + * Result is passed in r24/r25 + */ +# define argLen r22 /* argument 2 */ +# define argPtrL r24 /* argument 1 */ +# define argPtrH r25 /* argument 1 */ + +# define resCrcL r24 /* result */ +# define resCrcH r25 /* result */ + +# define ptrL XL +# define ptrH XH +# define ptr x +# define byte r18 +# define bitCnt r19 +# define polyL r20 +# define polyH r21 +# define scratch r23 + +#endif + +; extern unsigned usbCrc16(unsigned char *data, unsigned char len); +; data: r24/25 +; len: r22 +; temp variables: +; r18: data byte +; r19: bit counter +; r20/21: polynomial +; r23: scratch +; r24/25: crc-sum +; r26/27=X: ptr +usbCrc16: + mov ptrL, argPtrL + mov ptrH, argPtrH + ldi resCrcL, 0 + ldi resCrcH, 0 + ldi polyL, lo8(0xa001) + ldi polyH, hi8(0xa001) + com argLen ; argLen = -argLen - 1 +crcByteLoop: + subi argLen, -1 + brcc crcReady ; modified loop to ensure that carry is set below + ld byte, ptr+ + ldi bitCnt, -8 ; strange loop counter to ensure that carry is set where we need it + eor resCrcL, byte +crcBitLoop: + ror resCrcH ; carry is always set here + ror resCrcL + brcs crcNoXor + eor resCrcL, polyL + eor resCrcH, polyH +crcNoXor: + subi bitCnt, -1 + brcs crcBitLoop + rjmp crcByteLoop +crcReady: + ret +; Thanks to Reimar Doeffinger for optimizing this CRC routine! + +; extern unsigned usbCrc16Append(unsigned char *data, unsigned char len); +usbCrc16Append: + rcall usbCrc16 + st ptr+, resCrcL + st ptr+, resCrcH + ret + +#undef argLen +#undef argPtrL +#undef argPtrH +#undef resCrcL +#undef resCrcH +#undef ptrL +#undef ptrH +#undef ptr +#undef byte +#undef bitCnt +#undef polyL +#undef polyH +#undef scratch + + +#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH +#ifdef __IAR_SYSTEMS_ASM__ +/* Register assignments for usbMeasureFrameLength on IAR cc */ +/* Calling conventions on IAR: + * First parameter passed in r16/r17, second in r18/r19 and so on. + * Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer) + * Result is passed in r16/r17 + * In case of the "tiny" memory model, pointers are only 8 bit with no + * padding. We therefore pass argument 1 as "16 bit unsigned". + */ +# define resL r16 +# define resH r17 +# define cnt16L r30 +# define cnt16H r31 +# define cntH r18 + +#else /* __IAR_SYSTEMS_ASM__ */ +/* Register assignments for usbMeasureFrameLength on gcc */ +/* Calling conventions on gcc: + * First parameter passed in r24/r25, second in r22/23 and so on. + * Callee must preserve r1-r17, r28/r29 + * Result is passed in r24/r25 + */ +# define resL r24 +# define resH r25 +# define cnt16L r24 +# define cnt16H r25 +# define cntH r26 +#endif +# define cnt16 cnt16L + +; extern unsigned usbMeasurePacketLength(void); +; returns time between two idle strobes in multiples of 7 CPU clocks +.global usbMeasureFrameLength +usbMeasureFrameLength: + ldi cntH, 6 ; wait ~ 10 ms for D- == 0 + clr cnt16L + clr cnt16H +usbMFTime16: + dec cntH + breq usbMFTimeout +usbMFWaitStrobe: ; first wait for D- == 0 (idle strobe) + sbiw cnt16, 1 ;[0] [6] + breq usbMFTime16 ;[2] + sbic USBIN, USBMINUS ;[3] + rjmp usbMFWaitStrobe ;[4] +usbMFWaitIdle: ; then wait until idle again + sbis USBIN, USBMINUS ;1 wait for D- == 1 + rjmp usbMFWaitIdle ;2 + ldi cnt16L, 1 ;1 represents cycles so far + clr cnt16H ;1 +usbMFWaitLoop: + in cntH, USBIN ;[0] [7] + adiw cnt16, 1 ;[1] + breq usbMFTimeout ;[3] + andi cntH, USBMASK ;[4] + brne usbMFWaitLoop ;[5] +usbMFTimeout: +#if resL != cnt16L + mov resL, cnt16L + mov resH, cnt16H +#endif + ret + +#undef resL +#undef resH +#undef cnt16 +#undef cnt16L +#undef cnt16H +#undef cntH + +#endif /* USB_CFG_HAVE_MEASURE_FRAME_LENGTH */ + +;---------------------------------------------------------------------------- +; Now include the clock rate specific code +;---------------------------------------------------------------------------- + +#ifndef USB_CFG_CLOCK_KHZ +# define USB_CFG_CLOCK_KHZ 12000 +#endif + +#if USB_CFG_CLOCK_KHZ == 12000 +# include "usbdrvasm12.inc" +#elif USB_CFG_CLOCK_KHZ == 15000 +# include "usbdrvasm15.inc" +#elif USB_CFG_CLOCK_KHZ == 16000 +# include "usbdrvasm16.inc" +#elif USB_CFG_CLOCK_KHZ == 16500 +# include "usbdrvasm165.inc" +#elif USB_CFG_CLOCK_KHZ == 20000 +# include "usbdrvasm20.inc" +#else +# error "USB_CFG_CLOCK_KHZ is not one of the supported rates!" +#endif diff --git a/tools/usbload/usbdrv/usbdrvasm.asm b/tools/usbload/usbdrv/usbdrvasm.asm new file mode 100644 index 0000000..4a5486f --- /dev/null +++ b/tools/usbload/usbdrv/usbdrvasm.asm @@ -0,0 +1,21 @@ +/* Name: usbdrvasm.asm + * Project: AVR USB driver + * Author: Christian Starkjohann + * Creation Date: 2006-03-01 + * Tabsize: 4 + * Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * This Revision: $Id$ + */ + +/* +General Description: +The IAR compiler/assembler system prefers assembler files with file extension +".asm". We simply provide this file as an alias for usbdrvasm.S. + +Thanks to Oleg Semyonov for his help with the IAR tools port! +*/ + +#include "usbdrvasm.S" + +end diff --git a/tools/usbload/usbdrv/usbdrvasm12.inc b/tools/usbload/usbdrv/usbdrvasm12.inc new file mode 100644 index 0000000..23b988c --- /dev/null +++ b/tools/usbload/usbdrv/usbdrvasm12.inc @@ -0,0 +1,427 @@ +/* Name: usbdrvasm12.inc + * Project: AVR USB driver + * Author: Christian Starkjohann + * Creation Date: 2004-12-29 + * Tabsize: 4 + * Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt) + * This Revision: $Id: usbdrvasm12.inc 483 2008-02-05 15:05:32Z cs $ + */ + +/* Do not link this file! Link usbdrvasm.S instead, which includes the + * appropriate implementation! + */ + +/* +General Description: +This file is the 12 MHz version of the asssembler part of the USB driver. It +requires a 12 MHz crystal (not a ceramic resonator and not a calibrated RC +oscillator). + +See usbdrv.h for a description of the entire driver. + +Since almost all of this code is timing critical, don't change unless you +really know what you are doing! Many parts require not only a maximum number +of CPU cycles, but even an exact number of cycles! + + +Timing constraints according to spec (in bit times): +timing subject min max CPUcycles +--------------------------------------------------------------------------- +EOP of OUT/SETUP to sync pattern of DATA0 (both rx) 2 16 16-128 +EOP of IN to sync pattern of DATA0 (rx, then tx) 2 7.5 16-60 +DATAx (rx) to ACK/NAK/STALL (tx) 2 7.5 16-60 +*/ + +;Software-receiver engine. Strict timing! Don't change unless you can preserve timing! +;interrupt response time: 4 cycles + insn running = 7 max if interrupts always enabled +;max allowable interrupt latency: 34 cycles -> max 25 cycles interrupt disable +;max stack usage: [ret(2), YL, SREG, YH, shift, x1, x2, x3, cnt, x4] = 11 bytes +;Numbers in brackets are maximum cycles since SOF. +USB_INTR_VECTOR: +;order of registers pushed: YL, SREG [sofError], YH, shift, x1, x2, x3, cnt + push YL ;2 [35] push only what is necessary to sync with edge ASAP + in YL, SREG ;1 [37] + push YL ;2 [39] +;---------------------------------------------------------------------------- +; Synchronize with sync pattern: +;---------------------------------------------------------------------------- +;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K] +;sync up with J to K edge during sync pattern -- use fastest possible loops +;first part has no timeout because it waits for IDLE or SE1 (== disconnected) +waitForJ: + sbis USBIN, USBMINUS ;1 [40] wait for D- == 1 + rjmp waitForJ ;2 +waitForK: +;The following code results in a sampling window of 1/4 bit which meets the spec. + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK +#if USB_COUNT_SOF + lds YL, usbSofCount + inc YL + sts usbSofCount, YL +#endif /* USB_COUNT_SOF */ + rjmp sofError +foundK: +;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling] +;we have 1 bit time for setup purposes, then sample again. Numbers in brackets +;are cycles from center of first sync (double K) bit after the instruction + push YH ;2 [2] + lds YL, usbInputBufOffset;2 [4] + clr YH ;1 [5] + subi YL, lo8(-(usbRxBuf));1 [6] + sbci YH, hi8(-(usbRxBuf));1 [7] + + sbis USBIN, USBMINUS ;1 [8] we want two bits K [sample 1 cycle too early] + rjmp haveTwoBitsK ;2 [10] + pop YH ;2 [11] undo the push from before + rjmp waitForK ;2 [13] this was not the end of sync, retry +haveTwoBitsK: +;---------------------------------------------------------------------------- +; push more registers and initialize values while we sample the first bits: +;---------------------------------------------------------------------------- + push shift ;2 [16] + push x1 ;2 [12] + push x2 ;2 [14] + + in x1, USBIN ;1 [17] <-- sample bit 0 + ldi shift, 0xff ;1 [18] + bst x1, USBMINUS ;1 [19] + bld shift, 0 ;1 [20] + push x3 ;2 [22] + push cnt ;2 [24] + + in x2, USBIN ;1 [25] <-- sample bit 1 + ser x3 ;1 [26] [inserted init instruction] + eor x1, x2 ;1 [27] + bst x1, USBMINUS ;1 [28] + bld shift, 1 ;1 [29] + ldi cnt, USB_BUFSIZE;1 [30] [inserted init instruction] + rjmp rxbit2 ;2 [32] + +;---------------------------------------------------------------------------- +; Receiver loop (numbers in brackets are cycles within byte after instr) +;---------------------------------------------------------------------------- + +unstuff0: ;1 (branch taken) + andi x3, ~0x01 ;1 [15] + mov x1, x2 ;1 [16] x2 contains last sampled (stuffed) bit + in x2, USBIN ;1 [17] <-- sample bit 1 again + ori shift, 0x01 ;1 [18] + rjmp didUnstuff0 ;2 [20] + +unstuff1: ;1 (branch taken) + mov x2, x1 ;1 [21] x1 contains last sampled (stuffed) bit + andi x3, ~0x02 ;1 [22] + ori shift, 0x02 ;1 [23] + nop ;1 [24] + in x1, USBIN ;1 [25] <-- sample bit 2 again + rjmp didUnstuff1 ;2 [27] + +unstuff2: ;1 (branch taken) + andi x3, ~0x04 ;1 [29] + ori shift, 0x04 ;1 [30] + mov x1, x2 ;1 [31] x2 contains last sampled (stuffed) bit + nop ;1 [32] + in x2, USBIN ;1 [33] <-- sample bit 3 + rjmp didUnstuff2 ;2 [35] + +unstuff3: ;1 (branch taken) + in x2, USBIN ;1 [34] <-- sample stuffed bit 3 [one cycle too late] + andi x3, ~0x08 ;1 [35] + ori shift, 0x08 ;1 [36] + rjmp didUnstuff3 ;2 [38] + +unstuff4: ;1 (branch taken) + andi x3, ~0x10 ;1 [40] + in x1, USBIN ;1 [41] <-- sample stuffed bit 4 + ori shift, 0x10 ;1 [42] + rjmp didUnstuff4 ;2 [44] + +unstuff5: ;1 (branch taken) + andi x3, ~0x20 ;1 [48] + in x2, USBIN ;1 [49] <-- sample stuffed bit 5 + ori shift, 0x20 ;1 [50] + rjmp didUnstuff5 ;2 [52] + +unstuff6: ;1 (branch taken) + andi x3, ~0x40 ;1 [56] + in x1, USBIN ;1 [57] <-- sample stuffed bit 6 + ori shift, 0x40 ;1 [58] + rjmp didUnstuff6 ;2 [60] + +; extra jobs done during bit interval: +; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs] +; bit 1: se0 check +; bit 2: overflow check +; bit 3: recovery from delay [bit 0 tasks took too long] +; bit 4: none +; bit 5: none +; bit 6: none +; bit 7: jump, eor +rxLoop: + eor x3, shift ;1 [0] reconstruct: x3 is 0 at bit locations we changed, 1 at others + in x1, USBIN ;1 [1] <-- sample bit 0 + st y+, x3 ;2 [3] store data + ser x3 ;1 [4] + nop ;1 [5] + eor x2, x1 ;1 [6] + bst x2, USBMINUS;1 [7] + bld shift, 0 ;1 [8] + in x2, USBIN ;1 [9] <-- sample bit 1 (or possibly bit 0 stuffed) + andi x2, USBMASK ;1 [10] + breq se0 ;1 [11] SE0 check for bit 1 + andi shift, 0xf9 ;1 [12] +didUnstuff0: + breq unstuff0 ;1 [13] + eor x1, x2 ;1 [14] + bst x1, USBMINUS;1 [15] + bld shift, 1 ;1 [16] +rxbit2: + in x1, USBIN ;1 [17] <-- sample bit 2 (or possibly bit 1 stuffed) + andi shift, 0xf3 ;1 [18] + breq unstuff1 ;1 [19] do remaining work for bit 1 +didUnstuff1: + subi cnt, 1 ;1 [20] + brcs overflow ;1 [21] loop control + eor x2, x1 ;1 [22] + bst x2, USBMINUS;1 [23] + bld shift, 2 ;1 [24] + in x2, USBIN ;1 [25] <-- sample bit 3 (or possibly bit 2 stuffed) + andi shift, 0xe7 ;1 [26] + breq unstuff2 ;1 [27] +didUnstuff2: + eor x1, x2 ;1 [28] + bst x1, USBMINUS;1 [29] + bld shift, 3 ;1 [30] +didUnstuff3: + andi shift, 0xcf ;1 [31] + breq unstuff3 ;1 [32] + in x1, USBIN ;1 [33] <-- sample bit 4 + eor x2, x1 ;1 [34] + bst x2, USBMINUS;1 [35] + bld shift, 4 ;1 [36] +didUnstuff4: + andi shift, 0x9f ;1 [37] + breq unstuff4 ;1 [38] + nop2 ;2 [40] + in x2, USBIN ;1 [41] <-- sample bit 5 + eor x1, x2 ;1 [42] + bst x1, USBMINUS;1 [43] + bld shift, 5 ;1 [44] +didUnstuff5: + andi shift, 0x3f ;1 [45] + breq unstuff5 ;1 [46] + nop2 ;2 [48] + in x1, USBIN ;1 [49] <-- sample bit 6 + eor x2, x1 ;1 [50] + bst x2, USBMINUS;1 [51] + bld shift, 6 ;1 [52] +didUnstuff6: + cpi shift, 0x02 ;1 [53] + brlo unstuff6 ;1 [54] + nop2 ;2 [56] + in x2, USBIN ;1 [57] <-- sample bit 7 + eor x1, x2 ;1 [58] + bst x1, USBMINUS;1 [59] + bld shift, 7 ;1 [60] +didUnstuff7: + cpi shift, 0x04 ;1 [61] + brsh rxLoop ;2 [63] loop control +unstuff7: + andi x3, ~0x80 ;1 [63] + ori shift, 0x80 ;1 [64] + in x2, USBIN ;1 [65] <-- sample stuffed bit 7 + nop ;1 [66] + rjmp didUnstuff7 ;2 [68] + +macro POP_STANDARD ; 12 cycles + pop cnt + pop x3 + pop x2 + pop x1 + pop shift + pop YH +endm +macro POP_RETI ; 5 cycles + pop YL + out SREG, YL + pop YL +endm + +#include "asmcommon.inc" + +;---------------------------------------------------------------------------- +; Transmitting data +;---------------------------------------------------------------------------- + +bitstuff0: ;1 (for branch taken) + eor x1, x4 ;1 + ldi x2, 0 ;1 + out USBOUT, x1 ;1 <-- out + rjmp didStuff0 ;2 branch back 2 cycles earlier +bitstuff1: ;1 (for branch taken) + eor x1, x4 ;1 + rjmp didStuff1 ;2 we know that C is clear, jump back to do OUT and ror 0 into x2 +bitstuff2: ;1 (for branch taken) + eor x1, x4 ;1 + rjmp didStuff2 ;2 jump back 4 cycles earlier and do out and ror 0 into x2 +bitstuff3: ;1 (for branch taken) + eor x1, x4 ;1 + rjmp didStuff3 ;2 jump back earlier and ror 0 into x2 +bitstuff4: ;1 (for branch taken) + eor x1, x4 ;1 + ldi x2, 0 ;1 + out USBOUT, x1 ;1 <-- out + rjmp didStuff4 ;2 jump back 2 cycles earlier + +sendNakAndReti: ;0 [-19] 19 cycles until SOP + ldi x3, USBPID_NAK ;1 [-18] + rjmp usbSendX3 ;2 [-16] +sendAckAndReti: ;0 [-19] 19 cycles until SOP + ldi x3, USBPID_ACK ;1 [-18] + rjmp usbSendX3 ;2 [-16] +sendCntAndReti: ;0 [-17] 17 cycles until SOP + mov x3, cnt ;1 [-16] +usbSendX3: ;0 [-16] + ldi YL, 20 ;1 [-15] 'x3' is R20 + ldi YH, 0 ;1 [-14] + ldi cnt, 2 ;1 [-13] +; rjmp usbSendAndReti fallthrough + +; USB spec says: +; idle = J +; J = (D+ = 0), (D- = 1) or USBOUT = 0x01 +; K = (D+ = 1), (D- = 0) or USBOUT = 0x02 +; Spec allows 7.5 bit times from EOP to SOP for replies (= 60 cycles) + +;usbSend: +;pointer to data in 'Y' +;number of bytes in 'cnt' -- including sync byte +;uses: x1...x4, shift, cnt, Y +;Numbers in brackets are time since first bit of sync pattern is sent +usbSendAndReti: ;0 [-13] timing: 13 cycles until SOP + in x2, USBDDR ;1 [-12] + ori x2, USBMASK ;1 [-11] + sbi USBOUT, USBMINUS;2 [-9] prepare idle state; D+ and D- must have been 0 (no pullups) + in x1, USBOUT ;1 [-8] port mirror for tx loop + out USBDDR, x2 ;1 [-7] <- acquire bus +; need not init x2 (bitstuff history) because sync starts with 0 + push x4 ;2 [-5] + ldi x4, USBMASK ;1 [-4] exor mask + ldi shift, 0x80 ;1 [-3] sync byte is first byte sent +txLoop: ; [62] + sbrs shift, 0 ;1 [-2] [62] + eor x1, x4 ;1 [-1] [63] + out USBOUT, x1 ;1 [0] <-- out bit 0 + ror shift ;1 [1] + ror x2 ;1 [2] +didStuff0: + cpi x2, 0xfc ;1 [3] + brsh bitstuff0 ;1 [4] + sbrs shift, 0 ;1 [5] + eor x1, x4 ;1 [6] + ror shift ;1 [7] +didStuff1: + out USBOUT, x1 ;1 [8] <-- out bit 1 + ror x2 ;1 [9] + cpi x2, 0xfc ;1 [10] + brsh bitstuff1 ;1 [11] + sbrs shift, 0 ;1 [12] + eor x1, x4 ;1 [13] + ror shift ;1 [14] +didStuff2: + ror x2 ;1 [15] + out USBOUT, x1 ;1 [16] <-- out bit 2 + cpi x2, 0xfc ;1 [17] + brsh bitstuff2 ;1 [18] + sbrs shift, 0 ;1 [19] + eor x1, x4 ;1 [20] + ror shift ;1 [21] +didStuff3: + ror x2 ;1 [22] + cpi x2, 0xfc ;1 [23] + out USBOUT, x1 ;1 [24] <-- out bit 3 + brsh bitstuff3 ;1 [25] + nop2 ;2 [27] + ld x3, y+ ;2 [29] + sbrs shift, 0 ;1 [30] + eor x1, x4 ;1 [31] + out USBOUT, x1 ;1 [32] <-- out bit 4 + ror shift ;1 [33] + ror x2 ;1 [34] +didStuff4: + cpi x2, 0xfc ;1 [35] + brsh bitstuff4 ;1 [36] + sbrs shift, 0 ;1 [37] + eor x1, x4 ;1 [38] + ror shift ;1 [39] +didStuff5: + out USBOUT, x1 ;1 [40] <-- out bit 5 + ror x2 ;1 [41] + cpi x2, 0xfc ;1 [42] + brsh bitstuff5 ;1 [43] + sbrs shift, 0 ;1 [44] + eor x1, x4 ;1 [45] + ror shift ;1 [46] +didStuff6: + ror x2 ;1 [47] + out USBOUT, x1 ;1 [48] <-- out bit 6 + cpi x2, 0xfc ;1 [49] + brsh bitstuff6 ;1 [50] + sbrs shift, 0 ;1 [51] + eor x1, x4 ;1 [52] + ror shift ;1 [53] +didStuff7: + ror x2 ;1 [54] + cpi x2, 0xfc ;1 [55] + out USBOUT, x1 ;1 [56] <-- out bit 7 + brsh bitstuff7 ;1 [57] + mov shift, x3 ;1 [58] + dec cnt ;1 [59] + brne txLoop ;1/2 [60/61] +;make SE0: + cbr x1, USBMASK ;1 [61] prepare SE0 [spec says EOP may be 15 to 18 cycles] + pop x4 ;2 [63] +;brackets are cycles from start of SE0 now + out USBOUT, x1 ;1 [0] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle +;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm: +;set address only after data packet was sent, not after handshake + lds x2, usbNewDeviceAddr;2 [2] + lsl x2; ;1 [3] we compare with left shifted address + subi YL, 20 + 2 ;1 [4] Only assign address on data packets, not ACK/NAK in x3 + sbci YH, 0 ;1 [5] + breq skipAddrAssign ;2 [7] + sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer +skipAddrAssign: +;end of usbDeviceAddress transfer + ldi x2, 1< 10.0 cycles per bit, 80.0 cycles per byte +; Numbers in brackets are clocks counted from center of last sync bit +; when instruction starts + +;---------------------------------------------------------------------------- +; order of registers pushed: +; YL, SREG [sofError] YH, shift, x1, x2, x3, bitcnt, cnt, x4 +;---------------------------------------------------------------------------- +USB_INTR_VECTOR: + push YL ;2 push only what is necessary to sync with edge ASAP + in YL, SREG ;1 + push YL ;2 +;---------------------------------------------------------------------------- +; Synchronize with sync pattern: +; +; sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K] +; sync up with J to K edge during sync pattern -- use fastest possible loops +; first part has no timeout because it waits for IDLE or SE1 (== disconnected) +;------------------------------------------------------------------------------- +waitForJ: ;- + sbis USBIN, USBMINUS ;1 <-- sample: wait for D- == 1 + rjmp waitForJ ;2 +;------------------------------------------------------------------------------- +; The following code results in a sampling window of < 1/4 bit +; which meets the spec. +;------------------------------------------------------------------------------- +waitForK: ;- + sbis USBIN, USBMINUS ;1 [00] <-- sample + rjmp foundK ;2 [01] + sbis USBIN, USBMINUS ; <-- sample + rjmp foundK + sbis USBIN, USBMINUS ; <-- sample + rjmp foundK + sbis USBIN, USBMINUS ; <-- sample + rjmp foundK + sbis USBIN, USBMINUS ; <-- sample + rjmp foundK + sbis USBIN, USBMINUS ; <-- sample + rjmp foundK +#if USB_COUNT_SOF + lds YL, usbSofCount + inc YL + sts usbSofCount, YL +#endif /* USB_COUNT_SOF */ + rjmp sofError +;------------------------------------------------------------------------------ +; {3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for +; center sampling] +; we have 1 bit time for setup purposes, then sample again. +; Numbers in brackets are cycles from center of first sync (double K) +; bit after the instruction +;------------------------------------------------------------------------------ +foundK: ;- [02] + lds YL, usbInputBufOffset;2 [03+04] tx loop + push YH ;2 [05+06] + clr YH ;1 [07] + subi YL, lo8(-(usbRxBuf)) ;1 [08] [rx loop init] + sbci YH, hi8(-(usbRxBuf)) ;1 [09] [rx loop init] + push shift ;2 [10+11] + ser shift ;1 [12] + sbis USBIN, USBMINUS ;1 [-1] [13] <--sample:we want two bits K (sample 1 cycle too early) + rjmp haveTwoBitsK ;2 [00] [14] + pop shift ;2 [15+16] undo the push from before + pop YH ;2 [17+18] undo the push from before + rjmp waitForK ;2 [19+20] this was not the end of sync, retry +; The entire loop from waitForK until rjmp waitForK above must not exceed two +; bit times (= 20 cycles). + +;---------------------------------------------------------------------------- +; push more registers and initialize values while we sample the first bits: +;---------------------------------------------------------------------------- +haveTwoBitsK: ;- [01] + push x1 ;2 [02+03] + push x2 ;2 [04+05] + push x3 ;2 [06+07] + push bitcnt ;2 [08+09] + in x1, USBIN ;1 [00] [10] <-- sample bit 0 + bst x1, USBMINUS ;1 [01] + bld shift, 0 ;1 [02] + push cnt ;2 [03+04] + ldi cnt, USB_BUFSIZE ;1 [05] + push x4 ;2 [06+07] tx loop + rjmp rxLoop ;2 [08] +;---------------------------------------------------------------------------- +; Receiver loop (numbers in brackets are cycles within byte after instr) +;---------------------------------------------------------------------------- +unstuff0: ;- [07] (branch taken) + andi x3, ~0x01 ;1 [08] + mov x1, x2 ;1 [09] x2 contains last sampled (stuffed) bit + in x2, USBIN ;1 [00] [10] <-- sample bit 1 again + andi x2, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 1 + ori shift, 0x01 ;1 [03] 0b00000001 + nop ;1 [04] + rjmp didUnstuff0 ;2 [05] +;----------------------------------------------------- +unstuff1: ;- [05] (branch taken) + mov x2, x1 ;1 [06] x1 contains last sampled (stuffed) bit + andi x3, ~0x02 ;1 [07] + ori shift, 0x02 ;1 [08] 0b00000010 + nop ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample bit 2 again + andi x1, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 2 + rjmp didUnstuff1 ;2 [03] +;----------------------------------------------------- +unstuff2: ;- [05] (branch taken) + andi x3, ~0x04 ;1 [06] + ori shift, 0x04 ;1 [07] 0b00000100 + mov x1, x2 ;1 [08] x2 contains last sampled (stuffed) bit + nop ;1 [09] + in x2, USBIN ;1 [00] [10] <-- sample bit 3 + andi x2, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 3 + rjmp didUnstuff2 ;2 [03] +;----------------------------------------------------- +unstuff3: ;- [00] [10] (branch taken) + in x2, USBIN ;1 [01] [11] <-- sample stuffed bit 3 one cycle too late + andi x2, USBMASK ;1 [02] + breq se0Hop ;1 [03] SE0 check for stuffed bit 3 + andi x3, ~0x08 ;1 [04] + ori shift, 0x08 ;1 [05] 0b00001000 + rjmp didUnstuff3 ;2 [06] +;---------------------------------------------------------------------------- +; extra jobs done during bit interval: +; +; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs], +; overflow check, jump to the head of rxLoop +; bit 1: SE0 check +; bit 2: SE0 check, recovery from delay [bit 0 tasks took too long] +; bit 3: SE0 check, recovery from delay [bit 0 tasks took too long] +; bit 4: SE0 check, none +; bit 5: SE0 check, none +; bit 6: SE0 check, none +; bit 7: SE0 check, reconstruct: x3 is 0 at bit locations we changed, 1 at others +;---------------------------------------------------------------------------- +rxLoop: ;- [09] + in x2, USBIN ;1 [00] [10] <-- sample bit 1 (or possibly bit 0 stuffed) + andi x2, USBMASK ;1 [01] + brne SkipSe0Hop ;1 [02] +se0Hop: ;- [02] + rjmp se0 ;2 [03] SE0 check for bit 1 +SkipSe0Hop: ;- [03] + ser x3 ;1 [04] + andi shift, 0xf9 ;1 [05] 0b11111001 + breq unstuff0 ;1 [06] +didUnstuff0: ;- [06] + eor x1, x2 ;1 [07] + bst x1, USBMINUS ;1 [08] + bld shift, 1 ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample bit 2 (or possibly bit 1 stuffed) + andi x1, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 2 + andi shift, 0xf3 ;1 [03] 0b11110011 + breq unstuff1 ;1 [04] do remaining work for bit 1 +didUnstuff1: ;- [04] + eor x2, x1 ;1 [05] + bst x2, USBMINUS ;1 [06] + bld shift, 2 ;1 [07] + nop2 ;2 [08+09] + in x2, USBIN ;1 [00] [10] <-- sample bit 3 (or possibly bit 2 stuffed) + andi x2, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 3 + andi shift, 0xe7 ;1 [03] 0b11100111 + breq unstuff2 ;1 [04] +didUnstuff2: ;- [04] + eor x1, x2 ;1 [05] + bst x1, USBMINUS ;1 [06] + bld shift, 3 ;1 [07] +didUnstuff3: ;- [07] + andi shift, 0xcf ;1 [08] 0b11001111 + breq unstuff3 ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample bit 4 + andi x1, USBMASK ;1 [01] + breq se0Hop ;1 [02] SE0 check for bit 4 + eor x2, x1 ;1 [03] + bst x2, USBMINUS ;1 [04] + bld shift, 4 ;1 [05] +didUnstuff4: ;- [05] + andi shift, 0x9f ;1 [06] 0b10011111 + breq unstuff4 ;1 [07] + nop2 ;2 [08+09] + in x2, USBIN ;1 [00] [10] <-- sample bit 5 + andi x2, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for bit 5 + eor x1, x2 ;1 [03] + bst x1, USBMINUS ;1 [04] + bld shift, 5 ;1 [05] +didUnstuff5: ;- [05] + andi shift, 0x3f ;1 [06] 0b00111111 + breq unstuff5 ;1 [07] + nop2 ;2 [08+09] + in x1, USBIN ;1 [00] [10] <-- sample bit 6 + andi x1, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for bit 6 + eor x2, x1 ;1 [03] + bst x2, USBMINUS ;1 [04] + bld shift, 6 ;1 [05] +didUnstuff6: ;- [05] + cpi shift, 0x02 ;1 [06] 0b00000010 + brlo unstuff6 ;1 [07] + nop2 ;2 [08+09] + in x2, USBIN ;1 [00] [10] <-- sample bit 7 + andi x2, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for bit 7 + eor x1, x2 ;1 [03] + bst x1, USBMINUS ;1 [04] + bld shift, 7 ;1 [05] +didUnstuff7: ;- [05] + cpi shift, 0x04 ;1 [06] 0b00000100 + brlo unstuff7 ;1 [07] + eor x3, shift ;1 [08] reconstruct: x3 is 0 at bit locations we changed, 1 at others + nop ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample bit 0 + st y+, x3 ;2 [01+02] store data + eor x2, x1 ;1 [03] + bst x2, USBMINUS ;1 [04] + bld shift, 0 ;1 [05] + subi cnt, 1 ;1 [06] + brcs overflow ;1 [07] + rjmp rxLoop ;2 [08] +;----------------------------------------------------- +unstuff4: ;- [08] + andi x3, ~0x10 ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 4 + andi x1, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for stuffed bit 4 + ori shift, 0x10 ;1 [03] + rjmp didUnstuff4 ;2 [04] +;----------------------------------------------------- +unstuff5: ;- [08] + ori shift, 0x20 ;1 [09] + in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 5 + andi x2, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for stuffed bit 5 + andi x3, ~0x20 ;1 [03] + rjmp didUnstuff5 ;2 [04] +;----------------------------------------------------- +unstuff6: ;- [08] + andi x3, ~0x40 ;1 [09] + in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 6 + andi x1, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for stuffed bit 6 + ori shift, 0x40 ;1 [03] + rjmp didUnstuff6 ;2 [04] +;----------------------------------------------------- +unstuff7: ;- [08] + andi x3, ~0x80 ;1 [09] + in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 7 + andi x2, USBMASK ;1 [01] + breq se0 ;1 [02] SE0 check for stuffed bit 7 + ori shift, 0x80 ;1 [03] + rjmp didUnstuff7 ;2 [04] + +macro POP_STANDARD ; 16 cycles + pop x4 + pop cnt + pop bitcnt + pop x3 + pop x2 + pop x1 + pop shift + pop YH +endm +macro POP_RETI ; 5 cycles + pop YL + out SREG, YL + pop YL +endm + +#include "asmcommon.inc" + +;--------------------------------------------------------------------------- +; USB spec says: +; idle = J +; J = (D+ = 0), (D- = 1) +; K = (D+ = 1), (D- = 0) +; Spec allows 7.5 bit times from EOP to SOP for replies +;--------------------------------------------------------------------------- +bitstuffN: ;- [04] + eor x1, x4 ;1 [05] + clr x2 ;1 [06] + nop ;1 [07] + rjmp didStuffN ;1 [08] +;--------------------------------------------------------------------------- +bitstuff6: ;- [04] + eor x1, x4 ;1 [05] + clr x2 ;1 [06] + rjmp didStuff6 ;1 [07] +;--------------------------------------------------------------------------- +bitstuff7: ;- [02] + eor x1, x4 ;1 [03] + clr x2 ;1 [06] + nop ;1 [05] + rjmp didStuff7 ;1 [06] +;--------------------------------------------------------------------------- +sendNakAndReti: ;- [-19] + ldi x3, USBPID_NAK ;1 [-18] + rjmp sendX3AndReti ;1 [-17] +;--------------------------------------------------------------------------- +sendAckAndReti: ;- [-17] + ldi cnt, USBPID_ACK ;1 [-16] +sendCntAndReti: ;- [-16] + mov x3, cnt ;1 [-15] +sendX3AndReti: ;- [-15] + ldi YL, 20 ;1 [-14] x3==r20 address is 20 + ldi YH, 0 ;1 [-13] + ldi cnt, 2 ;1 [-12] +; rjmp usbSendAndReti fallthrough +;--------------------------------------------------------------------------- +;usbSend: +;pointer to data in 'Y' +;number of bytes in 'cnt' -- including sync byte [range 2 ... 12] +;uses: x1...x4, btcnt, shift, cnt, Y +;Numbers in brackets are time since first bit of sync pattern is sent +;We need not to match the transfer rate exactly because the spec demands +;only 1.5% precision anyway. +usbSendAndReti: ;- [-13] 13 cycles until SOP + in x2, USBDDR ;1 [-12] + ori x2, USBMASK ;1 [-11] + sbi USBOUT, USBMINUS ;2 [-09-10] prepare idle state; D+ and D- must have been 0 (no pullups) + in x1, USBOUT ;1 [-08] port mirror for tx loop + out USBDDR, x2 ;1 [-07] <- acquire bus + ; need not init x2 (bitstuff history) because sync starts with 0 + ldi x4, USBMASK ;1 [-06] exor mask + ldi shift, 0x80 ;1 [-05] sync byte is first byte sent + ldi bitcnt, 6 ;1 [-04] +txBitLoop: ;- [-04] [06] + sbrs shift, 0 ;1 [-03] [07] + eor x1, x4 ;1 [-02] [08] + ror shift ;1 [-01] [09] +didStuffN: ;- [09] + out USBOUT, x1 ;1 [00] [10] <-- out N + ror x2 ;1 [01] + cpi x2, 0xfc ;1 [02] + brcc bitstuffN ;1 [03] + dec bitcnt ;1 [04] + brne txBitLoop ;1 [05] + sbrs shift, 0 ;1 [06] + eor x1, x4 ;1 [07] + ror shift ;1 [08] +didStuff6: ;- [08] + nop ;1 [09] + out USBOUT, x1 ;1 [00] [10] <-- out 6 + ror x2 ;1 [01] + cpi x2, 0xfc ;1 [02] + brcc bitstuff6 ;1 [03] + sbrs shift, 0 ;1 [04] + eor x1, x4 ;1 [05] + ror shift ;1 [06] + ror x2 ;1 [07] +didStuff7: ;- [07] + ldi bitcnt, 6 ;1 [08] + cpi x2, 0xfc ;1 [09] + out USBOUT, x1 ;1 [00] [10] <-- out 7 + brcc bitstuff7 ;1 [01] + ld shift, y+ ;2 [02+03] + dec cnt ;1 [04] + brne txBitLoop ;1 [05] +makeSE0: + cbr x1, USBMASK ;1 [06] prepare SE0 [spec says EOP may be 19 to 23 cycles] + lds x2, usbNewDeviceAddr;2 [07+08] + lsl x2 ;1 [09] we compare with left shifted address +;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm: +;set address only after data packet was sent, not after handshake + out USBOUT, x1 ;1 [00] [10] <-- out SE0-- from now 2 bits==20 cycl. until bus idle + subi YL, 20 + 2 ;1 [01] Only assign address on data packets, not ACK/NAK in x3 + sbci YH, 0 ;1 [02] + breq skipAddrAssign ;1 [03] + sts usbDeviceAddr, x2 ;2 [04+05] if not skipped: SE0 is one cycle longer +;---------------------------------------------------------------------------- +;end of usbDeviceAddress transfer +skipAddrAssign: ;- [03/04] + ldi x2, 1< 10.6666666 cycles per bit, 85.333333333 cycles per byte +; Numbers in brackets are clocks counted from center of last sync bit +; when instruction starts + +USB_INTR_VECTOR: +;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt + push YL ;[-25] push only what is necessary to sync with edge ASAP + in YL, SREG ;[-23] + push YL ;[-22] + push YH ;[-20] +;---------------------------------------------------------------------------- +; Synchronize with sync pattern: +;---------------------------------------------------------------------------- +;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K] +;sync up with J to K edge during sync pattern -- use fastest possible loops +;first part has no timeout because it waits for IDLE or SE1 (== disconnected) +waitForJ: + sbis USBIN, USBMINUS ;[-18] wait for D- == 1 + rjmp waitForJ +waitForK: +;The following code results in a sampling window of < 1/4 bit which meets the spec. + sbis USBIN, USBMINUS ;[-15] + rjmp foundK ;[-14] + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK +#if USB_COUNT_SOF + lds YL, usbSofCount + inc YL + sts usbSofCount, YL +#endif /* USB_COUNT_SOF */ + rjmp sofError +foundK: ;[-12] +;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling] +;we have 1 bit time for setup purposes, then sample again. Numbers in brackets +;are cycles from center of first sync (double K) bit after the instruction + push bitcnt ;[-12] +; [---] ;[-11] + lds YL, usbInputBufOffset;[-10] +; [---] ;[-9] + clr YH ;[-8] + subi YL, lo8(-(usbRxBuf));[-7] [rx loop init] + sbci YH, hi8(-(usbRxBuf));[-6] [rx loop init] + push shift ;[-5] +; [---] ;[-4] + ldi bitcnt, 0x55 ;[-3] [rx loop init] + sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early) + rjmp haveTwoBitsK ;[-1] + pop shift ;[0] undo the push from before + pop bitcnt ;[2] undo the push from before + rjmp waitForK ;[4] this was not the end of sync, retry +; The entire loop from waitForK until rjmp waitForK above must not exceed two +; bit times (= 21 cycles). + +;---------------------------------------------------------------------------- +; push more registers and initialize values while we sample the first bits: +;---------------------------------------------------------------------------- +haveTwoBitsK: + push x1 ;[1] + push x2 ;[3] + push x3 ;[5] + ldi shift, 0 ;[7] + ldi x3, 1<<4 ;[8] [rx loop init] first sample is inverse bit, compensate that + push x4 ;[9] == leap + + in x1, USBIN ;[11] <-- sample bit 0 + andi x1, USBMASK ;[12] + bst x1, USBMINUS ;[13] + bld shift, 7 ;[14] + push cnt ;[15] + ldi leap, 0 ;[17] [rx loop init] + ldi cnt, USB_BUFSIZE;[18] [rx loop init] + rjmp rxbit1 ;[19] arrives at [21] + +;---------------------------------------------------------------------------- +; Receiver loop (numbers in brackets are cycles within byte after instr) +;---------------------------------------------------------------------------- + +unstuff6: + andi x2, USBMASK ;[03] + ori x3, 1<<6 ;[04] will not be shifted any more + andi shift, ~0x80;[05] + mov x1, x2 ;[06] sampled bit 7 is actually re-sampled bit 6 + subi leap, 3 ;[07] since this is a short (10 cycle) bit, enforce leap bit + rjmp didUnstuff6 ;[08] + +unstuff7: + ori x3, 1<<7 ;[09] will not be shifted any more + in x2, USBIN ;[00] [10] re-sample bit 7 + andi x2, USBMASK ;[01] + andi shift, ~0x80;[02] + subi leap, 3 ;[03] since this is a short (10 cycle) bit, enforce leap bit + rjmp didUnstuff7 ;[04] + +unstuffEven: + ori x3, 1<<6 ;[09] will be shifted right 6 times for bit 0 + in x1, USBIN ;[00] [10] + andi shift, ~0x80;[01] + andi x1, USBMASK ;[02] + breq se0 ;[03] + subi leap, 3 ;[04] since this is a short (10 cycle) bit, enforce leap bit + nop ;[05] + rjmp didUnstuffE ;[06] + +unstuffOdd: + ori x3, 1<<5 ;[09] will be shifted right 4 times for bit 1 + in x2, USBIN ;[00] [10] + andi shift, ~0x80;[01] + andi x2, USBMASK ;[02] + breq se0 ;[03] + subi leap, 3 ;[04] since this is a short (10 cycle) bit, enforce leap bit + nop ;[05] + rjmp didUnstuffO ;[06] + +rxByteLoop: + andi x1, USBMASK ;[03] + eor x2, x1 ;[04] + subi leap, 1 ;[05] + brpl skipLeap ;[06] + subi leap, -3 ;1 one leap cycle every 3rd byte -> 85 + 1/3 cycles per byte + nop ;1 +skipLeap: + subi x2, 1 ;[08] + ror shift ;[09] +didUnstuff6: + cpi shift, 0xfc ;[10] + in x2, USBIN ;[00] [11] <-- sample bit 7 + brcc unstuff6 ;[01] + andi x2, USBMASK ;[02] + eor x1, x2 ;[03] + subi x1, 1 ;[04] + ror shift ;[05] +didUnstuff7: + cpi shift, 0xfc ;[06] + brcc unstuff7 ;[07] + eor x3, shift ;[08] reconstruct: x3 is 1 at bit locations we changed, 0 at others + st y+, x3 ;[09] store data +rxBitLoop: + in x1, USBIN ;[00] [11] <-- sample bit 0/2/4 + andi x1, USBMASK ;[01] + eor x2, x1 ;[02] + andi x3, 0x3f ;[03] topmost two bits reserved for 6 and 7 + subi x2, 1 ;[04] + ror shift ;[05] + cpi shift, 0xfc ;[06] + brcc unstuffEven ;[07] +didUnstuffE: + lsr x3 ;[08] + lsr x3 ;[09] +rxbit1: + in x2, USBIN ;[00] [10] <-- sample bit 1/3/5 + andi x2, USBMASK ;[01] + breq se0 ;[02] + eor x1, x2 ;[03] + subi x1, 1 ;[04] + ror shift ;[05] + cpi shift, 0xfc ;[06] + brcc unstuffOdd ;[07] +didUnstuffO: + subi bitcnt, 0xab;[08] == addi 0x55, 0x55 = 0x100/3 + brcs rxBitLoop ;[09] + + subi cnt, 1 ;[10] + in x1, USBIN ;[00] [11] <-- sample bit 6 + brcc rxByteLoop ;[01] + rjmp overflow + +macro POP_STANDARD ; 14 cycles + pop cnt + pop x4 + pop x3 + pop x2 + pop x1 + pop shift + pop bitcnt +endm +macro POP_RETI ; 7 cycles + pop YH + pop YL + out SREG, YL + pop YL +endm + +#include "asmcommon.inc" + +; USB spec says: +; idle = J +; J = (D+ = 0), (D- = 1) +; K = (D+ = 1), (D- = 0) +; Spec allows 7.5 bit times from EOP to SOP for replies + +bitstuffN: + eor x1, x4 ;[5] + ldi x2, 0 ;[6] + nop2 ;[7] + nop ;[9] + out USBOUT, x1 ;[10] <-- out + rjmp didStuffN ;[0] + +bitstuff6: + eor x1, x4 ;[5] + ldi x2, 0 ;[6] Carry is zero due to brcc + rol shift ;[7] compensate for ror shift at branch destination + rjmp didStuff6 ;[8] + +bitstuff7: + ldi x2, 0 ;[2] Carry is zero due to brcc + rjmp didStuff7 ;[3] + + +sendNakAndReti: + ldi x3, USBPID_NAK ;[-18] + rjmp sendX3AndReti ;[-17] +sendAckAndReti: + ldi cnt, USBPID_ACK ;[-17] +sendCntAndReti: + mov x3, cnt ;[-16] +sendX3AndReti: + ldi YL, 20 ;[-15] x3==r20 address is 20 + ldi YH, 0 ;[-14] + ldi cnt, 2 ;[-13] +; rjmp usbSendAndReti fallthrough + +;usbSend: +;pointer to data in 'Y' +;number of bytes in 'cnt' -- including sync byte [range 2 ... 12] +;uses: x1...x4, btcnt, shift, cnt, Y +;Numbers in brackets are time since first bit of sync pattern is sent +;We don't match the transfer rate exactly (don't insert leap cycles every third +;byte) because the spec demands only 1.5% precision anyway. +usbSendAndReti: ; 12 cycles until SOP + in x2, USBDDR ;[-12] + ori x2, USBMASK ;[-11] + sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups) + in x1, USBOUT ;[-8] port mirror for tx loop + out USBDDR, x2 ;[-7] <- acquire bus +; need not init x2 (bitstuff history) because sync starts with 0 + ldi x4, USBMASK ;[-6] exor mask + ldi shift, 0x80 ;[-5] sync byte is first byte sent +txByteLoop: + ldi bitcnt, 0x35 ;[-4] [6] binary 0011 0101 +txBitLoop: + sbrs shift, 0 ;[-3] [7] + eor x1, x4 ;[-2] [8] + out USBOUT, x1 ;[-1] [9] <-- out N + ror shift ;[0] [10] + ror x2 ;[1] +didStuffN: + cpi x2, 0xfc ;[2] + brcc bitstuffN ;[3] + lsr bitcnt ;[4] + brcc txBitLoop ;[5] + brne txBitLoop ;[6] + + sbrs shift, 0 ;[7] + eor x1, x4 ;[8] +didStuff6: + out USBOUT, x1 ;[-1] [9] <-- out 6 + ror shift ;[0] [10] + ror x2 ;[1] + cpi x2, 0xfc ;[2] + brcc bitstuff6 ;[3] + ror shift ;[4] +didStuff7: + ror x2 ;[5] + sbrs x2, 7 ;[6] + eor x1, x4 ;[7] + nop ;[8] + cpi x2, 0xfc ;[9] + out USBOUT, x1 ;[-1][10] <-- out 7 + brcc bitstuff7 ;[0] [11] + ld shift, y+ ;[1] + dec cnt ;[3] + brne txByteLoop ;[4] +;make SE0: + cbr x1, USBMASK ;[5] prepare SE0 [spec says EOP may be 21 to 25 cycles] + lds x2, usbNewDeviceAddr;[6] + lsl x2 ;[8] we compare with left shifted address + subi YL, 20 + 2 ;[9] Only assign address on data packets, not ACK/NAK in x3 + sbci YH, 0 ;[10] + out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle +;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm: +;set address only after data packet was sent, not after handshake + breq skipAddrAssign ;[0] + sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer +skipAddrAssign: +;end of usbDeviceAddress transfer + ldi x2, 1< max 52 cycles interrupt disable +;max stack usage: [ret(2), r0, SREG, YL, YH, shift, x1, x2, x3, x4, cnt] = 12 bytes +;nominal frequency: 16.5 MHz -> 11 cycles per bit +; 16.3125 MHz < F_CPU < 16.6875 MHz (+/- 1.1%) +; Numbers in brackets are clocks counted from center of last sync bit +; when instruction starts + + +USB_INTR_VECTOR: +;order of registers pushed: YL, SREG [sofError], r0, YH, shift, x1, x2, x3, x4, cnt + push YL ;[-23] push only what is necessary to sync with edge ASAP + in YL, SREG ;[-21] + push YL ;[-20] +;---------------------------------------------------------------------------- +; Synchronize with sync pattern: +;---------------------------------------------------------------------------- +;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K] +;sync up with J to K edge during sync pattern -- use fastest possible loops +;first part has no timeout because it waits for IDLE or SE1 (== disconnected) +waitForJ: + sbis USBIN, USBMINUS ;[-18] wait for D- == 1 + rjmp waitForJ +waitForK: +;The following code results in a sampling window of < 1/4 bit which meets the spec. + sbis USBIN, USBMINUS ;[-15] + rjmp foundK ;[-14] + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK +#if USB_COUNT_SOF + lds YL, usbSofCount + inc YL + sts usbSofCount, YL +#endif /* USB_COUNT_SOF */ + rjmp sofError +foundK: ;[-12] +;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling] +;we have 1 bit time for setup purposes, then sample again. Numbers in brackets +;are cycles from center of first sync (double K) bit after the instruction + push r0 ;[-12] +; [---] ;[-11] + push YH ;[-10] +; [---] ;[-9] + lds YL, usbInputBufOffset;[-8] +; [---] ;[-7] + clr YH ;[-6] + subi YL, lo8(-(usbRxBuf));[-5] [rx loop init] + sbci YH, hi8(-(usbRxBuf));[-4] [rx loop init] + mov r0, x2 ;[-3] [rx loop init] + sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early) + rjmp haveTwoBitsK ;[-1] + pop YH ;[0] undo the pushes from before + pop r0 ;[2] + rjmp waitForK ;[4] this was not the end of sync, retry +; The entire loop from waitForK until rjmp waitForK above must not exceed two +; bit times (= 22 cycles). + +;---------------------------------------------------------------------------- +; push more registers and initialize values while we sample the first bits: +;---------------------------------------------------------------------------- +haveTwoBitsK: ;[1] + push shift ;[1] + push x1 ;[3] + push x2 ;[5] + push x3 ;[7] + ldi shift, 0xff ;[9] [rx loop init] + ori x3, 0xff ;[10] [rx loop init] == ser x3, clear zero flag + + in x1, USBIN ;[11] <-- sample bit 0 + bst x1, USBMINUS ;[12] + bld shift, 0 ;[13] + push x4 ;[14] == phase +; [---] ;[15] + push cnt ;[16] +; [---] ;[17] + ldi phase, 0 ;[18] [rx loop init] + ldi cnt, USB_BUFSIZE;[19] [rx loop init] + rjmp rxbit1 ;[20] +; [---] ;[21] + +;---------------------------------------------------------------------------- +; Receiver loop (numbers in brackets are cycles within byte after instr) +;---------------------------------------------------------------------------- +/* +byte oriented operations done during loop: +bit 0: store data +bit 1: SE0 check +bit 2: overflow check +bit 3: catch up +bit 4: rjmp to achieve conditional jump range +bit 5: PLL +bit 6: catch up +bit 7: jump, fixup bitstuff +; 87 [+ 2] cycles +------------------------------------------------------------------ +*/ +continueWithBit5: + in x2, USBIN ;[055] <-- bit 5 + eor r0, x2 ;[056] + or phase, r0 ;[057] + sbrc phase, USBMINUS ;[058] + lpm ;[059] optional nop3; modifies r0 + in phase, USBIN ;[060] <-- phase + eor x1, x2 ;[061] + bst x1, USBMINUS ;[062] + bld shift, 5 ;[063] + andi shift, 0x3f ;[064] + in x1, USBIN ;[065] <-- bit 6 + breq unstuff5 ;[066] *** unstuff escape + eor phase, x1 ;[067] + eor x2, x1 ;[068] + bst x2, USBMINUS ;[069] + bld shift, 6 ;[070] +didUnstuff6: ;[ ] + in r0, USBIN ;[071] <-- phase + cpi shift, 0x02 ;[072] + brlo unstuff6 ;[073] *** unstuff escape +didUnstuff5: ;[ ] + nop2 ;[074] +; [---] ;[075] + in x2, USBIN ;[076] <-- bit 7 + eor x1, x2 ;[077] + bst x1, USBMINUS ;[078] + bld shift, 7 ;[079] +didUnstuff7: ;[ ] + eor r0, x2 ;[080] + or phase, r0 ;[081] + in r0, USBIN ;[082] <-- phase + cpi shift, 0x04 ;[083] + brsh rxLoop ;[084] +; [---] ;[085] +unstuff7: ;[ ] + andi x3, ~0x80 ;[085] + ori shift, 0x80 ;[086] + in x2, USBIN ;[087] <-- sample stuffed bit 7 + nop ;[088] + rjmp didUnstuff7 ;[089] +; [---] ;[090] + ;[080] + +unstuff5: ;[067] + eor phase, x1 ;[068] + andi x3, ~0x20 ;[069] + ori shift, 0x20 ;[070] + in r0, USBIN ;[071] <-- phase + mov x2, x1 ;[072] + nop ;[073] + nop2 ;[074] +; [---] ;[075] + in x1, USBIN ;[076] <-- bit 6 + eor r0, x1 ;[077] + or phase, r0 ;[078] + eor x2, x1 ;[079] + bst x2, USBMINUS ;[080] + bld shift, 6 ;[081] no need to check bitstuffing, we just had one + in r0, USBIN ;[082] <-- phase + rjmp didUnstuff5 ;[083] +; [---] ;[084] + ;[074] + +unstuff6: ;[074] + andi x3, ~0x40 ;[075] + in x1, USBIN ;[076] <-- bit 6 again + ori shift, 0x40 ;[077] + nop2 ;[078] +; [---] ;[079] + rjmp didUnstuff6 ;[080] +; [---] ;[081] + ;[071] + +unstuff0: ;[013] + eor r0, x2 ;[014] + or phase, r0 ;[015] + andi x2, USBMASK ;[016] check for SE0 + in r0, USBIN ;[017] <-- phase + breq didUnstuff0 ;[018] direct jump to se0 would be too long + andi x3, ~0x01 ;[019] + ori shift, 0x01 ;[020] + mov x1, x2 ;[021] mov existing sample + in x2, USBIN ;[022] <-- bit 1 again + rjmp didUnstuff0 ;[023] +; [---] ;[024] + ;[014] + +unstuff1: ;[024] + eor r0, x1 ;[025] + or phase, r0 ;[026] + andi x3, ~0x02 ;[027] + in r0, USBIN ;[028] <-- phase + ori shift, 0x02 ;[029] + mov x2, x1 ;[030] + rjmp didUnstuff1 ;[031] +; [---] ;[032] + ;[022] + +unstuff2: ;[035] + eor r0, x2 ;[036] + or phase, r0 ;[037] + andi x3, ~0x04 ;[038] + in r0, USBIN ;[039] <-- phase + ori shift, 0x04 ;[040] + mov x1, x2 ;[041] + rjmp didUnstuff2 ;[042] +; [---] ;[043] + ;[033] + +unstuff3: ;[043] + in x2, USBIN ;[044] <-- bit 3 again + eor r0, x2 ;[045] + or phase, r0 ;[046] + andi x3, ~0x08 ;[047] + ori shift, 0x08 ;[048] + nop ;[049] + in r0, USBIN ;[050] <-- phase + rjmp didUnstuff3 ;[051] +; [---] ;[052] + ;[042] + +unstuff4: ;[053] + andi x3, ~0x10 ;[054] + in x1, USBIN ;[055] <-- bit 4 again + ori shift, 0x10 ;[056] + rjmp didUnstuff4 ;[057] +; [---] ;[058] + ;[048] + +rxLoop: ;[085] + eor x3, shift ;[086] reconstruct: x3 is 0 at bit locations we changed, 1 at others + in x1, USBIN ;[000] <-- bit 0 + st y+, x3 ;[001] +; [---] ;[002] + eor r0, x1 ;[003] + or phase, r0 ;[004] + eor x2, x1 ;[005] + in r0, USBIN ;[006] <-- phase + ser x3 ;[007] + bst x2, USBMINUS ;[008] + bld shift, 0 ;[009] + andi shift, 0xf9 ;[010] +rxbit1: ;[ ] + in x2, USBIN ;[011] <-- bit 1 + breq unstuff0 ;[012] *** unstuff escape + andi x2, USBMASK ;[013] SE0 check for bit 1 +didUnstuff0: ;[ ] Z only set if we detected SE0 in bitstuff + breq se0 ;[014] + eor r0, x2 ;[015] + or phase, r0 ;[016] + in r0, USBIN ;[017] <-- phase + eor x1, x2 ;[018] + bst x1, USBMINUS ;[019] + bld shift, 1 ;[020] + andi shift, 0xf3 ;[021] +didUnstuff1: ;[ ] + in x1, USBIN ;[022] <-- bit 2 + breq unstuff1 ;[023] *** unstuff escape + eor r0, x1 ;[024] + or phase, r0 ;[025] + subi cnt, 1 ;[026] overflow check + brcs overflow ;[027] + in r0, USBIN ;[028] <-- phase + eor x2, x1 ;[029] + bst x2, USBMINUS ;[030] + bld shift, 2 ;[031] + andi shift, 0xe7 ;[032] +didUnstuff2: ;[ ] + in x2, USBIN ;[033] <-- bit 3 + breq unstuff2 ;[034] *** unstuff escape + eor r0, x2 ;[035] + or phase, r0 ;[036] + eor x1, x2 ;[037] + bst x1, USBMINUS ;[038] + in r0, USBIN ;[039] <-- phase + bld shift, 3 ;[040] + andi shift, 0xcf ;[041] +didUnstuff3: ;[ ] + breq unstuff3 ;[042] *** unstuff escape + nop ;[043] + in x1, USBIN ;[044] <-- bit 4 + eor x2, x1 ;[045] + bst x2, USBMINUS ;[046] + bld shift, 4 ;[047] +didUnstuff4: ;[ ] + eor r0, x1 ;[048] + or phase, r0 ;[049] + in r0, USBIN ;[050] <-- phase + andi shift, 0x9f ;[051] + breq unstuff4 ;[052] *** unstuff escape + rjmp continueWithBit5;[053] +; [---] ;[054] + +macro POP_STANDARD ; 16 cycles + pop cnt + pop x4 + pop x3 + pop x2 + pop x1 + pop shift + pop YH + pop r0 +endm +macro POP_RETI ; 5 cycles + pop YL + out SREG, YL + pop YL +endm + +#include "asmcommon.inc" + + +; USB spec says: +; idle = J +; J = (D+ = 0), (D- = 1) +; K = (D+ = 1), (D- = 0) +; Spec allows 7.5 bit times from EOP to SOP for replies + +bitstuff7: + eor x1, x4 ;[4] + ldi x2, 0 ;[5] + nop2 ;[6] C is zero (brcc) + rjmp didStuff7 ;[8] + +bitstuffN: + eor x1, x4 ;[5] + ldi x2, 0 ;[6] + lpm ;[7] 3 cycle NOP, modifies r0 + out USBOUT, x1 ;[10] <-- out + rjmp didStuffN ;[0] + +#define bitStatus x3 + +sendNakAndReti: + ldi cnt, USBPID_NAK ;[-19] + rjmp sendCntAndReti ;[-18] +sendAckAndReti: + ldi cnt, USBPID_ACK ;[-17] +sendCntAndReti: + mov r0, cnt ;[-16] + ldi YL, 0 ;[-15] R0 address is 0 + ldi YH, 0 ;[-14] + ldi cnt, 2 ;[-13] +; rjmp usbSendAndReti fallthrough + +;usbSend: +;pointer to data in 'Y' +;number of bytes in 'cnt' -- including sync byte [range 2 ... 12] +;uses: x1...x4, shift, cnt, Y +;Numbers in brackets are time since first bit of sync pattern is sent +usbSendAndReti: ; 12 cycles until SOP + in x2, USBDDR ;[-12] + ori x2, USBMASK ;[-11] + sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups) + in x1, USBOUT ;[-8] port mirror for tx loop + out USBDDR, x2 ;[-7] <- acquire bus +; need not init x2 (bitstuff history) because sync starts with 0 + ldi x4, USBMASK ;[-6] exor mask + ldi shift, 0x80 ;[-5] sync byte is first byte sent + ldi bitStatus, 0xff ;[-4] init bit loop counter, works for up to 12 bytes +byteloop: +bitloop: + sbrs shift, 0 ;[8] [-3] + eor x1, x4 ;[9] [-2] + out USBOUT, x1 ;[10] [-1] <-- out + ror shift ;[0] + ror x2 ;[1] +didStuffN: + cpi x2, 0xfc ;[2] + brcc bitstuffN ;[3] + nop ;[4] + subi bitStatus, 37 ;[5] 256 / 7 ~=~ 37 + brcc bitloop ;[6] when we leave the loop, bitStatus has almost the initial value + sbrs shift, 0 ;[7] + eor x1, x4 ;[8] + ror shift ;[9] +didStuff7: + out USBOUT, x1 ;[10] <-- out + ror x2 ;[0] + cpi x2, 0xfc ;[1] + brcc bitstuff7 ;[2] + ld shift, y+ ;[3] + dec cnt ;[5] + brne byteloop ;[6] +;make SE0: + cbr x1, USBMASK ;[7] prepare SE0 [spec says EOP may be 21 to 25 cycles] + lds x2, usbNewDeviceAddr;[8] + lsl x2 ;[10] we compare with left shifted address + out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle +;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm: +;set address only after data packet was sent, not after handshake + subi YL, 2 ;[0] Only assign address on data packets, not ACK/NAK in r0 + sbci YH, 0 ;[1] + breq skipAddrAssign ;[2] + sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer +skipAddrAssign: +;end of usbDeviceAddress transfer + ldi x2, 1< 13.333333 cycles per bit, 106.666667 cycles per byte +; Numbers in brackets are clocks counted from center of last sync bit +; when instruction starts +;register use in receive loop: +; shift assembles the byte currently being received +; x1 holds the D+ and D- line state +; x2 holds the previous line state +; x4 (leap) is used to add a leap cycle once every three bytes received +; X3 (leap2) is used to add a leap cycle once every three stuff bits received +; bitcnt is used to determine when a stuff bit is due +; cnt holds the number of bytes left in the receive buffer + +USB_INTR_VECTOR: +;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt + push YL ;[-28] push only what is necessary to sync with edge ASAP + in YL, SREG ;[-26] + push YL ;[-25] + push YH ;[-23] +;---------------------------------------------------------------------------- +; Synchronize with sync pattern: +;---------------------------------------------------------------------------- +;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K] +;sync up with J to K edge during sync pattern -- use fastest possible loops +;first part has no timeout because it waits for IDLE or SE1 (== disconnected) +waitForJ: + sbis USBIN, USBMINUS ;[-21] wait for D- == 1 + rjmp waitForJ +waitForK: +;The following code results in a sampling window of < 1/4 bit which meets the spec. + sbis USBIN, USBMINUS ;[-19] + rjmp foundK ;[-18] + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK + sbis USBIN, USBMINUS + rjmp foundK +#if USB_COUNT_SOF + lds YL, usbSofCount + inc YL + sts usbSofCount, YL +#endif /* USB_COUNT_SOF */ + rjmp sofError +foundK: ;[-16] +;{3, 5} after falling D- edge, average delay: 4 cycles +;bit0 should be at 34 for center sampling. Currently at 4 so 30 cylces till bit 0 sample +;use 1 bit time for setup purposes, then sample again. Numbers in brackets +;are cycles from center of first sync (double K) bit after the instruction + push bitcnt ;[-16] +; [---] ;[-15] + lds YL, usbInputBufOffset;[-14] +; [---] ;[-13] + clr YH ;[-12] + subi YL, lo8(-(usbRxBuf));[-11] [rx loop init] + sbci YH, hi8(-(usbRxBuf));[-10] [rx loop init] + push shift ;[-9] +; [---] ;[-8] + ldi shift,0x40 ;[-7] set msb to "1" so processing bit7 can be detected + nop2 ;[-6] +; [---] ;[-5] + ldi bitcnt, 5 ;[-4] [rx loop init] + sbis USBIN, USBMINUS ;[-3] we want two bits K (sample 3 cycles too early) + rjmp haveTwoBitsK ;[-2] + pop shift ;[-1] undo the push from before + pop bitcnt ;[1] + rjmp waitForK ;[3] this was not the end of sync, retry +; The entire loop from waitForK until rjmp waitForK above must not exceed two +; bit times (= 27 cycles). + +;---------------------------------------------------------------------------- +; push more registers and initialize values while we sample the first bits: +;---------------------------------------------------------------------------- +haveTwoBitsK: + push x1 ;[0] + push x2 ;[2] + push x3 ;[4] (leap2) + ldi leap2, 0x55 ;[6] add leap cycle on 2nd,5th,8th,... stuff bit + push x4 ;[7] == leap + ldi leap, 0x55 ;[9] skip leap cycle on 2nd,5th,8th,... byte received + push cnt ;[10] + ldi cnt, USB_BUFSIZE ;[12] [rx loop init] + ldi x2, 1< + * + * inspired by USBasploader by Christian Starkjohann, + * see http://www.obdev.at/products/avrusb/usbasploader.html + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * For more information on the GPL, please go to: + * http://www.gnu.org/copyleft/gpl.html + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "config.h" +#include "usbdrv/usbdrv.c" + +/* USBasp requests, taken from the original USBasp sourcecode */ +#define USBASP_FUNC_CONNECT 1 +#define USBASP_FUNC_DISCONNECT 2 +#define USBASP_FUNC_TRANSMIT 3 +#define USBASP_FUNC_READFLASH 4 +#define USBASP_FUNC_ENABLEPROG 5 +#define USBASP_FUNC_WRITEFLASH 6 +#define USBASP_FUNC_READEEPROM 7 +#define USBASP_FUNC_WRITEEEPROM 8 +#define USBASP_FUNC_SETLONGADDRESS 9 + +/* additional functions */ +#define FUNC_ECHO 0x17 + +/* atmel isp commands */ +#define ISP_CHIP_ERASE1 0xAC +#define ISP_CHIP_ERASE2 0x80 +#define ISP_READ_SIGNATURE 0x30 +#define ISP_READ_EEPROM 0xa0 +#define ISP_WRITE_EEPROM 0xc0 + +/* some predefined signatures, taken from the original USBasp sourcecode */ +static const uint8_t signature[4] = { +#ifdef SIGNATURE_BYTES + SIGNATURE_BYTES +#elif defined (__AVR_ATmega8__) || defined (__AVR_ATmega8HVA__) + 0x1e, 0x93, 0x07, 0 +#elif defined (__AVR_ATmega48__) || defined (__AVR_ATmega48P__) + 0x1e, 0x92, 0x05, 0 +#elif defined (__AVR_ATmega88__) || defined (__AVR_ATmega88P__) + 0x1e, 0x93, 0x0a, 0 +#elif defined (__AVR_ATmega168__) || defined (__AVR_ATmega168P__) + 0x1e, 0x94, 0x06, 0 +#elif defined (__AVR_ATmega328P__) + 0x1e, 0x95, 0x0f, 0 +#else +# error "Device signature is not known, please edit config.h!" +#endif +}; + +#ifndef BOOT_SECTION_START +# error "BOOT_SECTION_START undefined!" +#endif + +#ifdef DEBUG_UART +static __attribute__ (( __noinline__ )) void putc(uint8_t data) { + while(!(UCSR0A & _BV(UDRE0))); + UDR0 = data; +} +#else +#define putc(x) +#endif + +/* supply custom usbDeviceConnect() and usbDeviceDisconnect() macros + * which turn the interrupt on and off at the right times, + * and prevent the execution of an interrupt while the pullup resistor + * is switched off */ +#ifdef USB_CFG_PULLUP_IOPORTNAME +#undef usbDeviceConnect +#define usbDeviceConnect() do { \ + USB_PULLUP_DDR |= (1< 0xffff +# error "usbload only supports up to 64kb of flash!" +#endif + +/* we are just checking the lower byte of flash_address, + * so make sure SPM_PAGESIZE is <= 256 + */ +#if SPM_PAGESIZE > 256 +# error "SPM_PAGESIZE is too big (just checking lower byte)" +#endif + +/* start flash (byte address) read/write at this address */ +usbWord_t flash_address; +uint8_t bytes_remaining; +uint8_t request; +uint8_t request_exit; + +uint8_t timeout; + +usbMsgLen_t usbFunctionSetup(uchar data[8]) +{ + usbRequest_t *req = (void *)data; + uint8_t len = 0; + static uint8_t buf[4]; + + /* set global data pointer to local buffer */ + usbMsgPtr = buf; + + /* on enableprog just return one zero, which means success */ + if (req->bRequest == USBASP_FUNC_ENABLEPROG) { + buf[0] = 0; + len = 1; + timeout = 255; + } else if (req->bRequest == USBASP_FUNC_CONNECT) { + /* turn on led */ + PORTD |= _BV(PD3); + } else if (req->bRequest == USBASP_FUNC_DISCONNECT) { + /* turn off led */ + PORTD &= ~_BV(PD3); + request_exit = 1; + /* catch query for the devicecode, chip erase and eeprom byte requests */ + } else if (req->bRequest == USBASP_FUNC_TRANSMIT) { + + /* reset buffer with zeroes */ + memset(buf, '\0', sizeof(buf)); + + /* read the address for eeprom operations */ + usbWord_t address; + address.bytes[0] = data[4]; /* low byte is data[4] */ + address.bytes[1] = data[3]; /* high byte is data[3] */ + + /* if this is a request to read the device signature, answer with the + * appropiate signature byte */ + if (data[2] == ISP_READ_SIGNATURE) { + /* the complete isp data is reported back to avrdude, but we just need byte 4 + * bits 0 and 1 of byte 3 determine the signature byte address */ + buf[3] = signature[data[4] & 0x03]; + +#ifdef ENABLE_CATCH_EEPROM_ISP + /* catch eeprom read */ + } else if (data[2] == ISP_READ_EEPROM) { + + buf[3] = eeprom_read_byte((uint8_t *)address.word); + + /* catch eeprom write */ + } else if (data[2] == ISP_WRITE_EEPROM) { + + /* address is in data[4], data[3], and databyte is in data[5] */ + eeprom_write_byte((uint8_t *)address.word, data[5]); +#endif + + /* catch a chip erase */ + } else if (data[2] == ISP_CHIP_ERASE1 && data[3] == ISP_CHIP_ERASE2) { + for (flash_address.word = 0; + flash_address.word < BOOT_SECTION_START; + flash_address.word += SPM_PAGESIZE) { + + /* wait and erase page */ + boot_spm_busy_wait(); + cli(); + boot_page_erase(flash_address.word); + sei(); + } + } + + /* in case no data has been filled in by the if's above, just return zeroes */ + len = 4; + +#ifdef ENABLE_ECHO_FUNC + /* implement a simple echo function, for testing the usb connectivity */ + } else if (req->bRequest == FUNC_ECHO) { + buf[0] = req->wValue.bytes[0]; + buf[1] = req->wValue.bytes[1]; + len = 2; +#endif + } else if (req->bRequest >= USBASP_FUNC_READFLASH) { + /* && req->bRequest <= USBASP_FUNC_SETLONGADDRESS */ + + putc('R'); + putc(req->bRequest); + + /* extract address and length */ + flash_address.word = req->wValue.word; + bytes_remaining = req->wLength.bytes[0]; + request = req->bRequest; + /* hand control over to usbFunctionRead()/usbFunctionWrite() */ + len = 0xff; + } + + return len; +} + +uchar usbFunctionWrite(uchar *data, uchar len) +{ + if (len > bytes_remaining) + len = bytes_remaining; + bytes_remaining -= len; + + if (request == USBASP_FUNC_WRITEEEPROM) { + for (uint8_t i = 0; i < len; i++) + eeprom_write_byte((uint8_t *)flash_address.word++, *data++); + } else { + /* data is handled wordwise, adjust len */ + len /= 2; + len -= 1; + for (uint8_t i = 0; i <= len; i++) { + uint16_t *w = (uint16_t *)data; + cli(); + boot_page_fill(flash_address.word, *w); + sei(); + + usbWord_t next_address; + next_address.word = flash_address.word; + next_address.word += 2; + data += 2; + + /* write page if page boundary is crossed or this is the last page */ + if ( next_address.bytes[0] % SPM_PAGESIZE == 0 || + (bytes_remaining == 0 && i == len) ) { + cli(); + boot_page_write(flash_address.word); + sei(); + boot_spm_busy_wait(); + cli(); + boot_rww_enable(); + sei(); + } + + flash_address.word = next_address.word; + } + } + + /* flash led on activity */ + PORTC ^= _BV(PC4); + + return (bytes_remaining == 0); +} + +uchar usbFunctionRead(uchar *data, uchar len) +{ + if(len > bytes_remaining) + len = bytes_remaining; + bytes_remaining -= len; + + for (uint8_t i = 0; i < len; i++) { + if(request == USBASP_FUNC_READEEPROM) + *data = eeprom_read_byte((void *)flash_address.word); + else + *data = pgm_read_byte_near((void *)flash_address.word); + data++; + flash_address.word++; + } + + /* flash led on activity */ + PORTC ^= _BV(PC4); + + return len; +} + +void leave_bootloader(void) +{ + + /* move interrupts to application section */ + cli(); + MCUCR = (1 << IVCE); + MCUCR = 0; + + /* disconnect usb */ + usbDeviceDisconnect(); + + /* reset usb interrupt configuration */ + USB_INTR_CFG = 0; + + /* reconfigure pins */ + DDRC = 0; + DDRD = 0; + PORTC = 0; + PORTD = 0; + + /* start main program at address 0 */ + asm volatile ("jmp 0"); +} + +int __attribute__ ((noreturn,OS_main)) main(void) +{ + /* start bootloader */ + +#ifdef DEBUG_UART + /* init uart (115200 baud, at 20mhz) */ + UBRR0L = 10; + UCSR0C = _BV(UCSZ00) | _BV(UCSZ01); + UCSR0B = _BV(TXEN0); + putc('b'); +#endif + + uint8_t reset = MCUSR & ~_BV(PORF); + + /* if we have not been reset externally, start application */ + if (!(reset == _BV(EXTRF)) && pgm_read_byte_near((void *)0) != 0xff) + leave_bootloader(); + + /* clear external reset flags */ + MCUSR = 0; + + /* init exit request state */ + request_exit = 0; + + /* init led pins (led1 and led2) */ + DDRC = _BV(PC4); + PORTC = _BV(PC4); + DDRD = _BV(PD3); + + /* move interrupts to boot section */ + MCUCR = (1 << IVCE); + MCUCR = (1 << IVSEL); + + /* enable interrupts */ + sei(); + + /* initialize usb pins */ + usbInit(); + + /* disconnect for ~500ms, so that the host re-enumerates this device */ + usbDeviceDisconnect(); + for (uint8_t i = 0; i < 38; i++) + _delay_loop_2(0); /* 0 means 0x10000, 38*1/f*0x10000 =~ 498ms */ + usbDeviceConnect(); + + uint16_t delay; + timeout = TIMEOUT; + + while(1) { + usbPoll(); + delay++; + + /* do some led blinking, so that it is visible that the bootloader is still running */ + if (delay == 0) { + PORTC ^= _BV(PC4); + if (timeout < 255) + timeout--; + } + + if (request_exit || timeout == 0) { + _delay_loop_2(0); + leave_bootloader(); + } + } + + leave_bootloader(); +}