75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
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#include <avr/io.h>
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#include <avr/pgmspace.h> /* required by usbdrv.h */
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#include <avr/interrupt.h> /* for sei() */
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#include <util/delay.h> /* for _delay_ms() */
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#include <stdlib.h>
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#include "usbdrv.h"
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#include "oddebug.h" /* This is also an example for using debug
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* macros */
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#include "config.h"
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#include "requests.h" /* The custom request numbers we use */
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#include "uart.h"
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#include "sram.h"
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#include "debug.h"
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#include "crc.h"
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#include "usb_bulk.h"
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extern uint8_t read_buffer[TRANSFER_BUFFER_SIZE];
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extern uint32_t req_addr;
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extern uint32_t req_size;
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extern uint8_t req_bank;
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extern uint32_t req_bank_size;
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extern uint8_t req_state;
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extern uint8_t rx_remaining;
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extern uint8_t tx_remaining;
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extern uint8_t tx_buffer[32];
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extern uint16_t crc;
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uint8_t usbFunctionWrite(uint8_t * data, uint8_t len)
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{
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uint8_t *ptr;
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uint8_t i;
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if (len > rx_remaining) {
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printf("ERROR:usbFunctionWrite more data than expected remain: %i len: %i\n",
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rx_remaining, len);
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len = rx_remaining;
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}
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if (req_state == REQ_STATUS_UPLOAD) {
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rx_remaining -= len;
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debug(DEBUG_USB_TRANS,"usbFunctionWrite REQ_STATUS_UPLOAD addr: 0x%08lx len: %i rx_remaining=%i\n",
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req_addr, len, rx_remaining);
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sram_copy(req_addr, data, len);
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req_addr += len;
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} else if (req_state == REQ_STATUS_BULK_UPLOAD) {
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rx_remaining -= len;
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debug(DEBUG_USB_TRANS,"usbFunctionWrite REQ_STATUS_BULK_UPLOAD addr: 0x%08lx len: %i rx_remaining=%i\n",
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req_addr, len, rx_remaining);
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ptr = data;
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i = len;
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while(i--){
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sram_bulk_write(*ptr++);
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counter_up();
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}
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}
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return len;
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}
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uint8_t usbFunctionRead(uint8_t * data, uint8_t len)
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{
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uint8_t i;
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if (len > tx_remaining)
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len = tx_remaining;
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tx_remaining -= len;
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debug(DEBUG_USB_TRANS,"usbFunctionRead len=%i tx_remaining=%i \n", len, tx_remaining);
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for (i = 0; i < len; i++) {
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*data = tx_buffer[len];
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data++;
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}
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return len;
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} |