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startover again and port fd0's loader to the 644

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This commit is contained in:
david 2009-07-21 15:28:09 +02:00
parent e45b08a5fb
commit b2bf789b85
23 changed files with 405 additions and 577 deletions
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51
avr/bootloader/Makefile
View File

@ -1,7 +1,7 @@
# microcontroller and project specific settings
TARGET = bootloader
F_CPU = 20000000
F_CPU = 20000000UL
MCU = atmega644
SRC = bootloader.c
@ -11,7 +11,7 @@ OBJECTS += $(patsubst %.S,%.o,${ASRC})
HEADERS += $(shell echo *.h)
# CFLAGS += -Werror
LDFLAGS += -L/usr/local/avr/avr/lib
CFLAGS += -Iusbdrv -I. -Os
CFLAGS += -Iusbdrv -I.
CFLAGS += -DHARDWARE_REV=$(HARDWARE_REV)
ASFLAGS += -x assembler-with-cpp
ASFLAGS += -Iusbdrv -I.
@ -36,10 +36,7 @@ else ifeq ($(MCU),atmega88)
# bootloader section starts at 0xc00 (word-address) == 0x1800 (byte-address)
BOOT_SECTION_START = 0x1800
else ifeq ($(MCU),atmega644)
# atmega88 with 1024 words bootloader:
# bootloader section starts at 0x7c00 (word-address) == 0xF800 (byte-address)
# atmega88 with 2024 words bootloader:
# atmega88 with 2048 words bootloader:
# bootloader section starts at 0x7800 (word-address) == 0xF000 (byte-address)
BOOT_SECTION_START = 0xf000
endif
@ -57,59 +54,23 @@ all: $(TARGET).hex $(TARGET).lss
@echo "$(TARGET) compiled for: $(MCU)"
@echo -n "size is: "
@$(SIZE) -A $(TARGET).hex | grep "\.sec1" | tr -s " " | cut -d" " -f2
@echo "max size:4096 bytes"
@echo "==============================="
$(TARGET): $(OBJECTS) $(TARGET).o
%.o: $(HEADERS)
.PHONY: install lock fuses-atmega168-unzap bootstrap
.PHONY: clean clean-$(TARGET)
# install: program-serial-$(TARGET) program-serial-eeprom-$(TARGET)
install: program-isp-$(TARGET)
lock:
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U lock:w:0x2f:m
fuses-atmega168-unzap:
echo "sck 5" | $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -F -u -t
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U lfuse:w:0xe7:m -U hfuse:w:0xd5:m -U efuse:w:0x00:m
echo "sck 0.2" | $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -F -u -t
fuses-atmega168-rumpus:
echo "sck 5" | $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -F -u -t
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -U lfuse:w:0xe7:m -U efuse:w:0x00:m
echo "sck 0.2" | $(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -P $(ISP_DEV) -F -u -t
bootstrap: fuses-atmega168-unzap install lock
.PHONY: clean clean-$(TARGET) clean-uploadtest
clean: clean-$(TARGET) clean-uploadtest
clean: clean-$(TARGET)
clean-$(TARGET):
$(RM) $(TARGET) $(OBJECTS)
clean-uploadtest:
rm -f datatestfile{512,14k}.raw
.PHONY: depend test uploadtest
.PHONY: depend test
depend:
$(CC) $(CFLAGS) -M $(CDEFS) $(CINCS) $(SRC) >> $(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

23
avr/bootloader/avr.mk
View File

@ -1,7 +1,7 @@
# Programmer used for In System Programming
ISP_PROG = usbasp
# device the ISP programmer is connected to
ISP_DEV = /dev/tty.PL2303-00002126
ISP_DEV =
# Programmer used for serial programming (using the bootloader)
SERIAL_PROG = avr109
# device the serial programmer is connected to
@ -38,7 +38,6 @@ ifeq ($(MCU),atmega644)
endif
AVRDUDE_FLAGS += -p $(AVRDUDE_MCU)
# flags for the compiler
@ -67,27 +66,14 @@ $(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
flash: bootloader.hex
flash:
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(ISP_PROG) -U flash:w:$<
program-isp-eeprom-%: %.eep.hex
flash-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 $< $@
@ -99,6 +85,3 @@ program-serial-eeprom-%: %.eep.hex launch-bootloader
%-size: %.hex
$(SIZE) $<
launch-bootloader:
launch-bootloader $(SERIAL_DEV) $(AVRDUDE_BAUDRATE)

42
avr/bootloader/bootloader.c
View File

@ -85,7 +85,7 @@ static const uint8_t signature[4] = {
#elif defined (__AVR_ATmega328P__)
0x1e, 0x95, 0x0f, 0
#elif defined (__AVR_ATmega644__)
0x1e, 0x96, 0x06, 0
0x1e, 0x96, 0x09, 0
#else
# error "Device signature is not known, please edit config.h!"
#endif
@ -109,7 +109,7 @@ static __attribute__ (( __noinline__ )) void putc(uint8_t data) {
* 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 { \
@ -124,7 +124,7 @@ static __attribute__ (( __noinline__ )) void putc(uint8_t data) {
USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT); \
} while(0);
#endif
*/
/* prototypes */
void __attribute__ (( __noreturn__, __noinline__, __naked__ )) leave_bootloader(void);
@ -341,19 +341,18 @@ int __attribute__ ((noreturn,OS_main)) main(void)
UCSR0C = _BV(UCSZ00) | _BV(UCSZ01);
UCSR0B = _BV(TXEN0);
#endif
putc('a');
putc('0');
wdt_disable();
uint8_t reset = MCUSR;
reset=0;
uint16_t delay =0;
timeout = TIMEOUT;
/* if power-on reset, quit bootloader via watchdog reset */
if (reset & _BV(PORF)){
putc('p');
putc('P');
MCUSR = 0;
leave_bootloader();
}
@ -361,19 +360,20 @@ int __attribute__ ((noreturn,OS_main)) main(void)
else if(reset & _BV(WDRF)){
MCUSR = 0;
//WDTCSR |= (1<<WDCE);
//WDTCSR &= ~((1<<WDIE) | (1<<WDE));
wdt_disable();
putc('r');
while(1);
putc('W');
DLED_TGL;
_delay_ms(500);
DLED_TGL;
_delay_ms(500);
jump_to_app();
}
while(1);
/* else: enter programming mode */
putc('u');
/* clear external reset flags */
MCUSR = 0;
@ -386,10 +386,13 @@ int __attribute__ ((noreturn,OS_main)) main(void)
MCUCR = (1 << IVCE);
MCUCR = (1 << IVSEL);
cli();
/* enable interrupts */
sei();
/* initialize usb pins */
usbInit();
/* disconnect for ~500ms, so that the host re-enumerates this device */
putc('d');
usbDeviceDisconnect();
@ -398,12 +401,12 @@ int __attribute__ ((noreturn,OS_main)) main(void)
usbDeviceConnect();
putc('c');
/* enable interrupts */
sei();
while(1) {
//wdt_reset();
usbPoll();
delay++;
/* do some led blinking, so that it is visible that the bootloader is still running */
@ -419,8 +422,7 @@ int __attribute__ ((noreturn,OS_main)) main(void)
_delay_ms(10);
leave_bootloader();
}
}
putc('l');
leave_bootloader();
}
}

4
avr/bootloader/interrupts.S
View File

@ -5,5 +5,5 @@
/* micro-jumptable, we are using just reset and int0 vectors */
exit:
__vector_default:
rjmp __init
rjmp __vector_1
jmp __init
jmp __vector_1

44
avr/bootloader/usbdrv/Changelog.txt
View File

@ -231,47 +231,3 @@ Scroll down to the bottom to see the most recent changes.
- Added 20 MHz module contributed by Jeroen Benschop.
* Release 2008-05-13
- Fixed bug in libs-host/hiddata.c function usbhidGetReport(): length
was not incremented, pointer to length was incremented instead.
- Added code to command line tool(s) which claims an interface. This code
is disabled by default, but may be necessary on newer Linux kernels.
- Added usbconfig.h option "USB_CFG_CHECK_DATA_TOGGLING".
- New header "usbportability.h" prepares ports to other development
environments.
- Long transfers (above 254 bytes) did not work when usbFunctionRead() was
used to supply the data. Fixed this bug. [Thanks to Alexander Neumann!]
- In hiddata.c (example code for sending/receiving data over HID), use
USB_RECIP_DEVICE instead of USB_RECIP_INTERFACE for control transfers so
that we need not claim the interface.
- in usbPoll() loop 20 times polling for RESET state instead of 10 times.
This accounts for the higher clock rates we now support.
- Added a module for 12.8 MHz RC oscillator with PLL in receiver loop.
- Added hook to SOF code so that oscillator can be tuned to USB frame clock.
- Added timeout to waitForJ loop. Helps preventing unexpected hangs.
- Added example code for oscillator tuning to libs-device (thanks to
Henrik Haftmann for the idea to this routine).
- Implemented option USB_CFG_SUPPRESS_INTR_CODE.
* Release 2008-10-22
- Fixed libs-device/osctune.h: OSCCAL is memory address on ATMega88 and
similar, not offset of 0x20 needs to be added.
- Allow distribution under GPLv3 for those who have to link against other
code distributed under GPLv3.
* Release 2008-11-26
- Removed libusb-win32 dependency for hid-data example in Makefile.windows.
It was never required and confused many people.
- Added extern uchar usbRxToken to usbdrv.h.
- Integrated a module with CRC checks at 18 MHz by Lukas Schrittwieser.
* Release 2009-03-23
- Hid-mouse example used settings from hid-data example, fixed that.
- Renamed project to V-USB due to a trademark issue with Atmel(r).
- Changed CommercialLicense.txt and USBID-License.txt to make the
background of USB ID registration clearer.
* Release 2009-04-15

53
avr/bootloader/usbdrv/CommercialLicense.txt
View File

@ -1,5 +1,5 @@
V-USB Driver Software License Agreement
Version 2009-04-14
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
@ -13,8 +13,8 @@ Grosse Schiffgasse 1A/7, 1020 Wien, AUSTRIA.
1.2 "You" shall mean the Licensee.
1.3 "V-USB" shall mean all files included in the package distributed under
the name "vusb" by OBJECTIVE DEVELOPMENT (http://www.obdev.at/vusb/)
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.
@ -23,22 +23,21 @@ and host side software examples and libraries.
2 LICENSE GRANTS
2.1 Source Code. OBJECTIVE DEVELOPMENT shall furnish you with the source
code of V-USB.
code of AVR-USB.
2.2 Distribution and Use. OBJECTIVE DEVELOPMENT grants you the
non-exclusive right to use, copy and distribute V-USB with your hardware
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
the source code and your copy of V-USB according to your needs.
your copy of AVR-USB according to your needs.
2.4 USB IDs. OBJECTIVE DEVELOPMENT furnishes you with one or two USB Product
ID(s), sent to you in e-mail. These Product IDs are reserved exclusively for
you. They have been obtained from Wouter van Ooijen (www.voti.nl), who has
reserved the Vendor ID 5824 (decimal) at the USB Implementers Forum, Inc.
(www.usb.org). This mechanism ensures that there are no Product ID conflicts,
but you cannot become USB certified (enter into the USB-IF Trademark License
Agreement) as you would need your own Vendor ID for that.
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
@ -47,21 +46,21 @@ Agreement) as you would need your own Vendor ID for that.
applicable. Which one is determined by the amount you pay to OBJECTIVE
DEVELOPMENT, see section 4 ("Payment") below.
Hobby License: You may use V-USB according to section 2 above in no more
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 V-USB according to section 2 above in no
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 V-USB according to section 2 above in
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 V-USB or otherwise encumber
any copy of V-USB, or any of the rights granted herein.
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
@ -79,7 +78,7 @@ non-exclusive.
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 V-USB will not pass certification because it does not
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.
@ -89,15 +88,15 @@ the electrical specifications.
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/vusb/license.html. You agree to pay the amount listed
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
V-USB is protected by copyright laws and international copyright
treaties, as well as other intellectual property laws and treaties. V-USB
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.
@ -113,12 +112,12 @@ and limitation of liability shall survive termination of this agreement.
7 DISCLAIMER OF WARRANTY AND LIABILITY
LIMITED WARRANTY. V-USB IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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 V-USB, AND THE PROVISION OF OR FAILURE
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.
@ -128,11 +127,11 @@ 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 V-USB OR THE
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 V-USB.
AGREEMENT SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR AVR-USB.
8 MISCELLANEOUS TERMS

12
avr/bootloader/usbdrv/License.txt
View File

@ -1,18 +1,16 @@
OBJECTIVE DEVELOPMENT GmbH's V-USB driver software is distributed under the
terms and conditions of the GNU GPL version 2 or the GNU GPL version 3. It is
your choice whether you apply the terms of version 2 or version 3. The full
text of GPLv2 is included below. In addition to the requirements in the GPL,
we STRONGLY ENCOURAGE you to do the following:
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/vusb/feedback.html for your submission.
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/vusb/
- 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.

74
avr/bootloader/usbdrv/Readme.txt
View File

@ -1,6 +1,6 @@
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/vusb/
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
@ -33,7 +33,7 @@ The driver consists of the following files:
defined to a value greater than 0. Link this module
to your code!
oddebug.h .............. Interface definitions of the debug module.
usbportability.h ....... Header with compiler-dependent stuff.
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.
@ -47,13 +47,12 @@ The driver consists of the following files:
CPU CORE CLOCK FREQUENCY
========================
We supply assembler modules for clock frequencies of 12 MHz, 12.8 MHz, 15 MHz,
16 MHz, 16.5 MHz 18 MHz and 20 MHz. Other clock rates are not supported. The
actual clock rate must be configured in usbdrv.h unless you use the default
12 MHz.
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 V-USB because it's the lowest 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
@ -68,29 +67,19 @@ 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.
12.8 MHz and 16.5 MHz Clock
The assembler modules for these clock rates differ from the other modules
because they have 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 reach 16.5 MHz with the RC oscillator. This includes the very
popular ATTiny25, ATTiny45, ATTiny85 series as well as the ATTiny26. Almost
all AVRs can reach 12.8 MHz, although this is outside the specified range.
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/vusb/easylogger.html for
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.
18 MHz Clock
This module is closer to the USB specification because it performs an on the
fly CRC check for incoming packets. Packets with invalid checksum are
discarded as required by the spec. If you also implement checks for data
PID toggling on application level (see option USB_CFG_CHECK_DATA_TOGGLING
in usbconfig.h for more info), this ensures data integrity. Due to the CRC
tables and alignment requirements, this code is bigger than modules for other
clock rates. To activate this module, you must define USB_CFG_CHECK_CRC to 1
and USB_CFG_CLOCK_KHZ to 18000 in usbconfig.h.
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
@ -108,14 +97,14 @@ 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/vusb/ for details.
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. V-USB
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
@ -123,36 +112,35 @@ 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 V-USB FOR FREE
====================
USING AVR-USB FOR FREE
======================
The AVR firmware driver is published under the GNU General Public License
Version 2 (GPL2) and the GNU General Public License Version 3 (GPL3). It is
your choice whether you apply the terms of version 2 or version 3.
Version 2 (GPL2). See the file "License.txt" for details.
If you decide for the free GPL2 or GPL3, we STRONGLY ENCOURAGE you to do the
following things IN ADDITION to the obligations from the GPL:
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/vusb/feedback.html for your submission.
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=vusb-wiki&p=hosted-projects.
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/vusb/
- 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 V-USB
=============================
If you don't want to publish your source code under the terms of the GPL,
you can simply pay money for V-USB. As an additional benefit you get
USB PIDs for free, reserved exclusively to you. See the file
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.

26
avr/bootloader/usbdrv/USBID-License.txt
View File

@ -1,17 +1,10 @@
Royalty-Free Non-Exclusive Use of USB Product-IDs
Royalty-Free Non-Exclusive License USB Product-ID
=================================================
Version 2009-04-13
Strictly speaking, this is not a license. You can't give a license to use
a simple number (such as e.g. 1500) for any purpose. This is a set of rules
which should make it possible to build USB devices without the requirement
for individual USB IDs. If you break one of the rules, you will run into
technical problems sooner or later, but you don't risk legal trouble.
Version 2008-04-07
OBJECTIVE DEVELOPMENT Software GmbH hereby grants you the non-exclusive
right to use four USB.org vendor-ID (VID) / product-ID (PID) pairs with
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:
@ -34,11 +27,10 @@ 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 obtained these VID/PID pairs from
Wouter van Ooijen (see www.voti.nl) for exclusive disposition. Wouter van
Ooijen has obtained the VID from the USB Implementers Forum, Inc.
(see www.usb.org). The VID is registered for the company name
"Van Ooijen Technische Informatica".
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
@ -52,7 +44,7 @@ MUST be available at least in USB language 0x0409 (English/US).
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/vusb/".
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.
@ -150,5 +142,5 @@ 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 V-USB include a PID for
Development's commercial licenses for AVR-USB include a PID for
unrestricted exclusive use.

26
avr/bootloader/usbdrv/asmcommon.inc
View File

@ -1,10 +1,10 @@
/* Name: asmcommon.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id$
*/
@ -103,11 +103,8 @@ sofError:
reti
handleData:
#if USB_CFG_CHECK_CRC
CRC_CLEANUP_AND_CHECK ; jumps to ignorePacket if CRC error
#endif
lds shift, usbCurrentTok;[18]
tst shift ;[20]
lds token, usbCurrentTok;[18]
tst token ;[20]
breq doReturn ;[21]
lds x2, usbRxLen ;[22]
tst x2 ;[24]
@ -116,11 +113,8 @@ handleData:
; recognized if usbPoll() was called less frequently than once every 4 ms.
cpi cnt, 4 ;[26] zero sized data packets are status phase only -- ignore and ack
brmi sendAckAndReti ;[27] keep rx buffer clean -- we must not NAK next SETUP
#if USB_CFG_CHECK_DATA_TOGGLING
sts usbCurrentDataToken, token ; store for checking by C code
#endif
sts usbRxLen, cnt ;[28] store received data, swap buffers
sts usbRxToken, shift ;[30]
sts usbRxToken, token ;[30]
lds x2, usbInputBufOffset;[32] swap buffers
ldi cnt, USB_BUFSIZE ;[34]
sub cnt, x2 ;[35]
@ -137,11 +131,7 @@ handleIn:
ldi x1, USBPID_NAK ;[34] prepare value for usbTxLen
#if USB_CFG_HAVE_INTRIN_ENDPOINT
andi x3, 0xf ;[35] x3 contains endpoint
#if USB_CFG_SUPPRESS_INTR_CODE
brne sendNakAndReti ;[36]
#else
brne handleIn1 ;[36]
#endif
#endif
lds cnt, usbTxLen ;[37]
sbrc cnt, 4 ;[39] all handshake tokens have bit 4 set
@ -160,7 +150,7 @@ handleIn:
; RAM this way and avoid potential problems with endless retries. The rest of
; the driver assumes error-free transfers anyway.
#if !USB_CFG_SUPPRESS_INTR_CODE && USB_CFG_HAVE_INTRIN_ENDPOINT /* placed here due to relative jump range */
#if USB_CFG_HAVE_INTRIN_ENDPOINT /* placed here due to relative jump range */
handleIn1: ;[38]
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
; 2006-06-10 as suggested by O.Tamura: support second INTR IN / BULK IN endpoint
@ -174,8 +164,9 @@ handleIn1: ;[38]
ldi YL, lo8(usbTxBuf1) ;[46]
ldi YH, hi8(usbTxBuf1) ;[47]
rjmp usbSendAndReti ;[48] 50 + 12 = 62 until SOP
#endif
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
#if USB_CFG_HAVE_INTRIN_ENDPOINT && USB_CFG_HAVE_INTRIN_ENDPOINT3
handleIn3:
lds cnt, usbTxLen3 ;[41]
sbrc cnt, 4 ;[43]
@ -185,4 +176,3 @@ handleIn3:
ldi YH, hi8(usbTxBuf3) ;[48]
rjmp usbSendAndReti ;[49] 51 + 12 = 63 until SOP
#endif
#endif

16
avr/bootloader/usbdrv/iarcompat.h
View File

@ -4,8 +4,8 @@
* Creation Date: 2006-03-01
* Tabsize: 4
* Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH
* License: Proprietary, free under certain conditions. See Documentation.
* This Revision: $Id$
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* This Revision: $Id: iarcompat.h 533 2008-02-28 15:35:25Z cs $
*/
/*
@ -33,11 +33,6 @@ Thanks to Oleg Semyonov for his help with the IAR tools port!
#endif
#define __attribute__(arg)
#define IAR_SECTION(section) @ section
#ifndef USB_BUFFER_SECTION
# define USB_BUFFER_SECTION "TINY_Z" /* if user has not selected a named section */
#endif
#ifdef __IAR_SYSTEMS_ASM__
# define __ASSEMBLER__
@ -58,6 +53,13 @@ Thanks to Oleg Semyonov for his help with the IAR tools port!
#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__ */

4
avr/bootloader/usbdrv/oddebug.c
View File

@ -4,8 +4,8 @@
* Creation Date: 2005-01-16
* Tabsize: 4
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: oddebug.c 692 2008-11-07 15:07:40Z cs $
* 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"

9
avr/bootloader/usbdrv/oddebug.h
View File

@ -4,8 +4,8 @@
* Creation Date: 2005-01-16
* Tabsize: 4
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: oddebug.h 692 2008-11-07 15:07:40Z cs $
* 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__
@ -29,7 +29,10 @@ the output and a memory block to dump in hex ('data' and 'len').
#endif
/* make sure we have the UART defines: */
#include "usbportability.h"
#include "iarcompat.h"
#ifndef __IAR_SYSTEMS_ICC__
# include <avr/io.h>
#endif
#ifndef uchar
# define uchar unsigned char

67
avr/bootloader/usbdrv/usbconfig-prototype.h
View File

@ -1,11 +1,11 @@
/* Name: usbconfig.h
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* Project: AVR USB driver
* Author: Christian Starkjohann
* Creation Date: 2005-04-01
* Tabsize: 4
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbconfig-prototype.h 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbconfig-prototype.h 600 2008-05-13 10:34:56Z cs $
*/
#ifndef __usbconfig_h_included__
@ -14,7 +14,7 @@
/*
General Description:
This file is an example configuration (with inline documentation) for the USB
driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
driver. It configures AVR-USB for USB D+ connected to Port D bit 2 (which is
also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
wire the lines to any other port, as long as D+ is also wired to INT0 (or any
other hardware interrupt, as long as it is the highest level interrupt, see
@ -44,18 +44,12 @@ section at the end of this file).
* markers every millisecond.]
*/
#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
* 16500 and 20000. The 12.8 MHz and 16.5 MHz versions of the code require no
* crystal, they tolerate +/- 1% deviation from the nominal frequency. All
* other rates require a precision of 2000 ppm and thus a crystal!
/* 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
*/
#define USB_CFG_CHECK_CRC 0
/* Define this to 1 if you want that the driver checks integrity of incoming
* data packets (CRC checks). CRC checks cost quite a bit of code size and are
* currently only available for 18 MHz crystal clock. You must choose
* USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
*/
/* ----------------------- Optional Hardware Config ------------------------ */
@ -100,14 +94,6 @@ section at the end of this file).
* it is required by the standard. We have made it a config option because it
* bloats the code considerably.
*/
#define USB_CFG_SUPPRESS_INTR_CODE 0
/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
* want to send any data over them. If this macro is defined to 1, functions
* usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
* you need the interrupt-in endpoints in order to comply to an interface
* (e.g. HID), but never want to send any data. This option saves a couple
* of bytes in flash memory and the transmit buffers in RAM.
*/
#define USB_CFG_INTR_POLL_INTERVAL 10
/* 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
@ -170,33 +156,6 @@ section at the end of this file).
* counts SOF packets. This feature requires that the hardware interrupt is
* connected to D- instead of D+.
*/
/* #ifdef __ASSEMBLER__
* macro myAssemblerMacro
* in YL, TCNT0
* sts timer0Snapshot, YL
* endm
* #endif
* #define USB_SOF_HOOK myAssemblerMacro
* This macro (if defined) is executed in the assembler module when a
* Start Of Frame condition is detected. It is recommended to define it to
* the name of an assembler macro which is defined here as well so that more
* than one assembler instruction can be used. The macro may use the register
* YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
* immediately after an SOF pulse may be lost and must be retried by the host.
* What can you do with this hook? Since the SOF signal occurs exactly every
* 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
* designs running on the internal RC oscillator.
* Please note that Start Of Frame detection works only if D- is wired to the
* interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
*/
#define USB_CFG_CHECK_DATA_TOGGLING 0
/* define this macro to 1 if you want to filter out duplicate data packets
* sent by the host. Duplicates occur only as a consequence of communication
* errors, when the host does not receive an ACK. Please note that you need to
* implement the filtering yourself in usbFunctionWriteOut() and
* usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
* for each control- and out-endpoint to check for duplicate packets.
*/
#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.
@ -284,9 +243,7 @@ section at the end of this file).
* 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(). If the usbMsgPtr mechanism is
* used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
* you want RAM pointers.
* 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),
@ -318,12 +275,6 @@ section at the end of this file).
* USB_CFG_DESCR_PROPS_HID_REPORT
* USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
*
* Note about string descriptors: String descriptors are not just strings, they
* are Unicode strings prefixed with a 2 byte header. Example:
* int serialNumberDescriptor[] = {
* USB_STRING_DESCRIPTOR_HEADER(6),
* 'S', 'e', 'r', 'i', 'a', 'l'
* };
*/
#define USB_CFG_DESCR_PROPS_DEVICE 0

56
avr/bootloader/usbdrv/usbdrv.c
View File

@ -1,14 +1,18 @@
/* Name: usbdrv.c
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbdrv.c 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbdrv.c 591 2008-05-03 20:21:19Z cs $
*/
#include "usbportability.h"
#include "iarcompat.h"
#ifndef __IAR_SYSTEMS_ICC__
# include <avr/io.h>
# include <avr/pgmspace.h>
#endif
#include "usbdrv.h"
#include "oddebug.h"
@ -34,15 +38,12 @@ uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbT
#if USB_COUNT_SOF
volatile uchar usbSofCount; /* incremented by assembler module every SOF */
#endif
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
#if USB_CFG_HAVE_INTRIN_ENDPOINT
usbTxStatus_t usbTxStatus1;
# if USB_CFG_HAVE_INTRIN_ENDPOINT3
usbTxStatus_t usbTxStatus3;
# endif
#endif
#if USB_CFG_CHECK_DATA_TOGGLING
uchar usbCurrentDataToken;/* when we check data toggling to ignore duplicate packets */
#endif
/* USB status registers / not shared with asm code */
uchar *usbMsgPtr; /* data to transmit next -- ROM or RAM address */
@ -55,7 +56,7 @@ static uchar usbMsgFlags; /* flag values see below */
/*
optimizing hints:
- do not post/pre inc/dec integer values in operations
- assign value of USB_READ_FLASH() to register variables and don't use side effects in arg
- 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
*/
@ -194,9 +195,18 @@ PROGMEM char usbDescriptorConfiguration[] = { /* USB configuration descriptor
/* ------------------------------------------------------------------------- */
/* 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_CFG_SUPPRESS_INTR_CODE
#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 */
@ -216,7 +226,6 @@ static inline void usbResetStall(void)
/* ------------------------------------------------------------------------- */
#if !USB_CFG_SUPPRESS_INTR_CODE
#if USB_CFG_HAVE_INTRIN_ENDPOINT
static void usbGenericSetInterrupt(uchar *data, uchar len, usbTxStatus_t *txStatus)
{
@ -254,7 +263,6 @@ USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len)
usbGenericSetInterrupt(data, len, &usbTxStatus3);
}
#endif
#endif /* USB_CFG_SUPPRESS_INTR_CODE */
/* ------------------ utilities for code following below ------------------- */
@ -400,7 +408,7 @@ uchar index = rq->wIndex.bytes[0];
usbResetStall();
SWITCH_CASE(USBRQ_GET_INTERFACE) /* 10 */
len = 1;
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
#if USB_CFG_HAVE_INTRIN_ENDPOINT
SWITCH_CASE(USBRQ_SET_INTERFACE) /* 11 */
usbResetDataToggling();
usbResetStall();
@ -428,7 +436,7 @@ usbRequest_t *rq = (void *)data;
* 0xe1 11100001 (USBPID_OUT: data phase of setup transfer)
* 0...0x0f for OUT on endpoint X
*/
DBG2(0x10 + (usbRxToken & 0xf), data, len + 2); /* SETUP=1d, SETUP-DATA=11, OUTx=1x */
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 */
@ -451,13 +459,9 @@ usbRequest_t *rq = (void *)data;
}
#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, but on IN transfers only */
/* do some conditioning on replyLen */
if((rq->bmRequestType & USBRQ_DIR_MASK) != USBRQ_DIR_HOST_TO_DEVICE){
if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */
replyLen = rq->wLength.bytes[0];
}else{
replyLen = rq->wLength.word;
}
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. */
@ -501,7 +505,7 @@ static uchar usbDeviceRead(uchar *data, uchar len)
uchar i = len, *r = usbMsgPtr;
if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */
do{
uchar c = USB_READ_FLASH(r); /* assign to char size variable to enforce byte ops */
uchar c = PRG_RDB(r); /* assign to char size variable to enforce byte ops */
*data++ = c;
r++;
}while(--i);
@ -588,17 +592,17 @@ uchar i;
usbBuildTxBlock();
}
}
for(i = 20; i > 0; i--){
for(i = 10; i > 0; i--){
uchar usbLineStatus = USBIN & USBMASK;
if(usbLineStatus != 0) /* SE0 has ended */
goto isNotReset;
break;
}
/* RESET condition, called multiple times during reset */
if(i == 0){ /* RESET condition, called multiple times during reset */
usbNewDeviceAddr = 0;
usbDeviceAddr = 0;
usbResetStall();
DBG1(0xff, 0, 0);
isNotReset:
}
usbHandleResetHook(i);
}
@ -614,7 +618,7 @@ USB_PUBLIC void usbInit(void)
#endif
USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT);
usbResetDataToggling();
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
#if USB_CFG_HAVE_INTRIN_ENDPOINT
usbTxLen1 = USBPID_NAK;
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
usbTxLen3 = USBPID_NAK;

37
avr/bootloader/usbdrv/usbdrv.h
View File

@ -1,17 +1,17 @@
/* Name: usbdrv.h
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbdrv.h 748 2009-04-15 15:05:07Z cs $
* 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 "usbportability.h"
#include "iarcompat.h"
/*
Hardware Prerequisites:
@ -34,8 +34,8 @@ 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, 16 MHz or 20 MHz
or at 12.8 MHz resp. 16.5 MHz +/- 1%. See usbconfig-prototype.h for details.
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:
@ -122,7 +122,7 @@ USB messages, even if they address another (low-speed) device on the same bus.
/* --------------------------- Module Interface ---------------------------- */
/* ------------------------------------------------------------------------- */
#define USBDRV_VERSION 20090415
#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
@ -273,8 +273,6 @@ USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len);
* to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
*/
#endif /* USB_CFG_IMPLEMENT_FN_READ */
extern uchar usbRxToken; /* may be used in usbFunctionWriteOut() below */
#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-
@ -341,12 +339,6 @@ extern volatile uchar usbSofCount;
* the macro USB_COUNT_SOF is defined to a value != 0.
*/
#endif
#if USB_CFG_CHECK_DATA_TOGGLING
extern uchar usbCurrentDataToken;
/* This variable can be checked in usbFunctionWrite() and usbFunctionWriteOut()
* to ignore duplicate packets.
*/
#endif
#define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8))
/* This macro builds a descriptor header for a string descriptor given the
@ -390,9 +382,7 @@ extern volatile schar usbRxLen;
*/
#define USB_PROP_IS_DYNAMIC (1 << 14)
/* If this property is set for a descriptor, usbFunctionDescriptor() will be
* used to obtain the particular descriptor. Data directly returned via
* usbMsgPtr are FLASH data by default, combine (OR) with USB_PROP_IS_RAM to
* return RAM data.
* used to obtain the particular descriptor.
*/
#define USB_PROP_IS_RAM (1 << 15)
/* If this property is set for a descriptor, the data is read from RAM
@ -556,10 +546,6 @@ int usbDescriptorStringSerialNumber[];
#define USB_CFG_EP3_NUMBER 3
#endif
#ifndef USB_CFG_HAVE_INTRIN_ENDPOINT3
#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
#endif
#define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */
/* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */
@ -572,14 +558,7 @@ int usbDescriptorStringSerialNumber[];
# endif
#endif
#ifndef USB_INTR_CFG_SET /* allow user to override our default */
# if defined(USB_COUNT_SOF) || defined(USB_SOF_HOOK)
# define USB_INTR_CFG_SET (1 << ISC01) /* cfg for falling edge */
/* If any SOF logic is used, the interrupt must be wired to D- where
* we better trigger on falling edge
*/
# else
# define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */
# endif
#endif
#ifndef USB_INTR_CFG_CLR /* allow user to override our default */
# define USB_INTR_CFG_CLR 0 /* no bits to clear */

59
avr/bootloader/usbdrv/usbdrvasm.S
View File

@ -1,11 +1,11 @@
/* Name: usbdrvasm.S
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm.S 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id$
*/
/*
@ -15,8 +15,15 @@ general code (preprocessor acrobatics and CRC computation) and then includes
the file appropriate for the given clock rate.
*/
#define __SFR_OFFSET 0 /* used by avr-libc's register definitions */
#include "usbportability.h"
#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 <avr/io.h> /* 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 */
@ -26,14 +33,24 @@ the file appropriate for the given clock rate.
#define cnt r19
#define x3 r20
#define x4 r21
#define x5 r22
#define bitcnt x5
#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
@ -56,6 +73,8 @@ the file appropriate for the given clock rate.
#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
@ -280,26 +299,16 @@ usbMFTimeout:
# define USB_CFG_CLOCK_KHZ 12000
#endif
#if USB_CFG_CHECK_CRC /* separate dispatcher for CRC type modules */
# if USB_CFG_CLOCK_KHZ == 18000
# include "usbdrvasm18-crc.inc"
# else
# error "USB_CFG_CLOCK_KHZ is not one of the supported crc-rates!"
# endif
#else /* USB_CFG_CHECK_CRC */
# if USB_CFG_CLOCK_KHZ == 12000
#if USB_CFG_CLOCK_KHZ == 12000
# include "usbdrvasm12.inc"
# elif USB_CFG_CLOCK_KHZ == 12800
# include "usbdrvasm128.inc"
# elif USB_CFG_CLOCK_KHZ == 15000
#elif USB_CFG_CLOCK_KHZ == 15000
# include "usbdrvasm15.inc"
# elif USB_CFG_CLOCK_KHZ == 16000
#elif USB_CFG_CLOCK_KHZ == 16000
# include "usbdrvasm16.inc"
# elif USB_CFG_CLOCK_KHZ == 16500
#elif USB_CFG_CLOCK_KHZ == 16500
# include "usbdrvasm165.inc"
# elif USB_CFG_CLOCK_KHZ == 20000
#elif USB_CFG_CLOCK_KHZ == 20000
# include "usbdrvasm20.inc"
# else
# error "USB_CFG_CLOCK_KHZ is not one of the supported non-crc-rates!"
# endif
#endif /* USB_CFG_CHECK_CRC */
#else
# error "USB_CFG_CLOCK_KHZ is not one of the supported rates!"
#endif

4
avr/bootloader/usbdrv/usbdrvasm.asm
View File

@ -1,10 +1,10 @@
/* Name: usbdrvasm.asm
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* This Revision: $Id$
*/

246
avr/bootloader/usbdrv/usbdrvasm12.inc
View File

@ -1,11 +1,11 @@
/* Name: usbdrvasm12.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* 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), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: usbdrvasm12.inc 740 2009-04-13 18:23:31Z cs $
* 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
@ -48,13 +48,10 @@ USB_INTR_VECTOR:
;----------------------------------------------------------------------------
;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
;The first part waits at most 1 bit long since we must be in sync pattern.
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
;waitForJ, ensure that this prerequisite is met.
;first part has no timeout because it waits for IDLE or SE1 (== disconnected)
waitForJ:
inc YL
sbis USBIN, USBMINUS
brne waitForJ ; just make sure we have ANY timeout
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
@ -72,9 +69,6 @@ waitForK:
inc YL
sts usbSofCount, YL
#endif /* USB_COUNT_SOF */
#ifdef USB_SOF_HOOK
USB_SOF_HOOK
#endif
rjmp sofError
foundK:
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling]
@ -256,12 +250,12 @@ macro POP_STANDARD ; 12 cycles
pop x1
pop shift
pop YH
endm
endm
macro POP_RETI ; 5 cycles
pop YL
out SREG, YL
pop YL
endm
endm
#include "asmcommon.inc"
@ -269,16 +263,25 @@ macro POP_RETI ; 5 cycles
; Transmitting data
;----------------------------------------------------------------------------
txByteLoop:
txBitloop:
stuffN1Delay: ; [03]
ror shift ;[-5] [11] [59]
brcc doExorN1 ;[-4] [60]
subi x4, 1 ;[-3]
brne commonN1 ;[-2]
lsl shift ;[-1] compensate ror after rjmp stuffDelay
nop ;[00] stuffing consists of just waiting 8 cycles
rjmp stuffN1Delay ;[01] after ror, C bit is reliably clear
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]
@ -303,91 +306,122 @@ usbSendX3: ;0 [-16]
;usbSend:
;pointer to data in 'Y'
;number of bytes in 'cnt' -- including sync byte
;uses: x1...x2, x4, shift, cnt, Y [x1 = mirror USBOUT, x2 = USBMASK, x4 = bitstuff cnt]
;Numbers in brackets are time since first bit of sync pattern is sent (start of instruction)
usbSendAndReti:
in x2, USBDDR ;[-12] 12 cycles until SOP
ori x2, USBMASK ;[-11]
sbi USBOUT, USBMINUS ;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
out USBDDR, x2 ;[-8] <--- acquire bus
in x1, USBOUT ;[-7] port mirror for tx loop
ldi shift, 0x40 ;[-6] sync byte is first byte sent (we enter loop after ror)
ldi x2, USBMASK ;[-5]
push x4 ;[-4]
doExorN1:
eor x1, x2 ;[-2] [06] [62]
ldi x4, 6 ;[-1] [07] [63]
commonN1:
stuffN2Delay:
out USBOUT, x1 ;[00] [08] [64] <--- set bit
ror shift ;[01]
brcc doExorN2 ;[02]
subi x4, 1 ;[03]
brne commonN2 ;[04]
lsl shift ;[05] compensate ror after rjmp stuffDelay
rjmp stuffN2Delay ;[06] after ror, C bit is reliably clear
doExorN2:
eor x1, x2 ;[04] [12]
ldi x4, 6 ;[05] [13]
commonN2:
nop ;[06] [14]
subi cnt, 171 ;[07] [15] trick: (3 * 171) & 0xff = 1
out USBOUT, x1 ;[08] [16] <--- set bit
brcs txBitloop ;[09] [25] [41]
stuff6Delay:
ror shift ;[42] [50]
brcc doExor6 ;[43]
subi x4, 1 ;[44]
brne common6 ;[45]
lsl shift ;[46] compensate ror after rjmp stuffDelay
nop ;[47] stuffing consists of just waiting 8 cycles
rjmp stuff6Delay ;[48] after ror, C bit is reliably clear
doExor6:
eor x1, x2 ;[45] [53]
ldi x4, 6 ;[46]
common6:
stuff7Delay:
ror shift ;[47] [55]
out USBOUT, x1 ;[48] <--- set bit
brcc doExor7 ;[49]
subi x4, 1 ;[50]
brne common7 ;[51]
lsl shift ;[52] compensate ror after rjmp stuffDelay
rjmp stuff7Delay ;[53] after ror, C bit is reliably clear
doExor7:
eor x1, x2 ;[51] [59]
ldi x4, 6 ;[52]
common7:
ld shift, y+ ;[53]
tst cnt ;[55]
out USBOUT, x1 ;[56] <--- set bit
brne txByteLoop ;[57]
;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 ;[58] prepare SE0 [spec says EOP may be 15 to 18 cycles]
lds x2, usbNewDeviceAddr;[59]
lsl x2 ;[61] we compare with left shifted address
subi YL, 2 + 20 ;[62] Only assign address on data packets, not ACK/NAK in x3
sbci YH, 0 ;[63]
out USBOUT, x1 ;[00] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle
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
breq skipAddrAssign ;[01]
sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
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<<USB_INTR_PENDING_BIT;[03] int0 occurred during TX -- clear pending flag
USB_STORE_PENDING(x2) ;[04]
ori x1, USBIDLE ;[05]
in x2, USBDDR ;[06]
cbr x2, USBMASK ;[07] set both pins to input
mov x3, x1 ;[08]
cbr x3, USBMASK ;[09] configure no pullup on both pins
pop x4 ;[10]
nop2 ;[12]
nop2 ;[14]
out USBOUT, x1 ;[16] <-- out J (idle) -- end of SE0 (EOP signal)
out USBDDR, x2 ;[17] <-- release bus now
out USBOUT, x3 ;[18] <-- ensure no pull-up resistors are active
ldi x2, 1<<USB_INTR_PENDING_BIT;1 [8] int0 occurred during TX -- clear pending flag
USB_STORE_PENDING(x2) ;1 [9]
ori x1, USBIDLE ;1 [10]
in x2, USBDDR ;1 [11]
cbr x2, USBMASK ;1 [12] set both pins to input
mov x3, x1 ;1 [13]
cbr x3, USBMASK ;1 [14] configure no pullup on both pins
out USBOUT, x1 ;1 [15] <-- out J (idle) -- end of SE0 (EOP signal)
out USBDDR, x2 ;1 [16] <-- release bus now
out USBOUT, x3 ;1 [17] <-- ensure no pull-up resistors are active
rjmp doReturn
bitstuff5: ;1 (for branch taken)
eor x1, x4 ;1
rjmp didStuff5 ;2 same trick as in bitstuff1...
bitstuff6: ;1 (for branch taken)
eor x1, x4 ;1
rjmp didStuff6 ;2 same trick as above...
bitstuff7: ;1 (for branch taken)
eor x1, x4 ;1
rjmp didStuff7 ;2 same trick as above...

25
avr/bootloader/usbdrv/usbdrvasm15.inc
View File

@ -1,11 +1,11 @@
/* Name: usbdrvasm15.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* Project: AVR USB driver
* Author: contributed by V. Bosch
* Creation Date: 2007-08-06
* Tabsize: 4
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm15.inc 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm15.inc 607 2008-05-13 15:57:28Z cs $
*/
/* Do not link this file! Link usbdrvasm.S instead, which includes the
@ -43,13 +43,11 @@ USB_INTR_VECTOR:
;
; 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
;The first part waits at most 1 bit long since we must be in sync pattern.
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
;waitForJ, ensure that this prerequisite is met.
waitForJ:
inc YL
sbis USBIN, USBMINUS
brne waitForJ ; just make sure we have ANY timeout
; 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.
@ -72,9 +70,6 @@ waitForK: ;-
inc YL
sts usbSofCount, YL
#endif /* USB_COUNT_SOF */
#ifdef USB_SOF_HOOK
USB_SOF_HOOK
#endif
rjmp sofError
;------------------------------------------------------------------------------
; {3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for
@ -294,12 +289,12 @@ macro POP_STANDARD ; 16 cycles
pop x1
pop shift
pop YH
endm
endm
macro POP_RETI ; 5 cycles
pop YL
out SREG, YL
pop YL
endm
endm
#include "asmcommon.inc"

22
avr/bootloader/usbdrv/usbdrvasm16.inc
View File

@ -1,11 +1,11 @@
/* Name: usbdrvasm16.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* Project: AVR USB driver
* Author: Christian Starkjohann
* Creation Date: 2007-06-15
* Tabsize: 4
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm16.inc 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm16.inc 607 2008-05-13 15:57:28Z cs $
*/
/* Do not link this file! Link usbdrvasm.S instead, which includes the
@ -41,13 +41,10 @@ USB_INTR_VECTOR:
;----------------------------------------------------------------------------
;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
;The first part waits at most 1 bit long since we must be in sync pattern.
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
;waitForJ, ensure that this prerequisite is met.
;first part has no timeout because it waits for IDLE or SE1 (== disconnected)
waitForJ:
inc YL
sbis USBIN, USBMINUS
brne waitForJ ; just make sure we have ANY timeout
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]
@ -67,9 +64,6 @@ waitForK:
inc YL
sts usbSofCount, YL
#endif /* USB_COUNT_SOF */
#ifdef USB_SOF_HOOK
USB_SOF_HOOK
#endif
rjmp sofError
foundK: ;[-12]
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
@ -214,13 +208,13 @@ macro POP_STANDARD ; 14 cycles
pop x1
pop shift
pop bitcnt
endm
endm
macro POP_RETI ; 7 cycles
pop YH
pop YL
out SREG, YL
pop YL
endm
endm
#include "asmcommon.inc"

22
avr/bootloader/usbdrv/usbdrvasm165.inc
View File

@ -1,11 +1,11 @@
/* Name: usbdrvasm165.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* Project: AVR USB driver
* Author: Christian Starkjohann
* Creation Date: 2007-04-22
* Tabsize: 4
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm165.inc 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm165.inc 607 2008-05-13 15:57:28Z cs $
*/
/* Do not link this file! Link usbdrvasm.S instead, which includes the
@ -46,13 +46,10 @@ USB_INTR_VECTOR:
;----------------------------------------------------------------------------
;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
;The first part waits at most 1 bit long since we must be in sync pattern.
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
;waitForJ, ensure that this prerequisite is met.
;first part has no timeout because it waits for IDLE or SE1 (== disconnected)
waitForJ:
inc YL
sbis USBIN, USBMINUS
brne waitForJ ; just make sure we have ANY timeout
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]
@ -72,9 +69,6 @@ waitForK:
inc YL
sts usbSofCount, YL
#endif /* USB_COUNT_SOF */
#ifdef USB_SOF_HOOK
USB_SOF_HOOK
#endif
rjmp sofError
foundK: ;[-12]
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
@ -340,12 +334,12 @@ macro POP_STANDARD ; 16 cycles
pop shift
pop YH
pop r0
endm
endm
macro POP_RETI ; 5 cycles
pop YL
out SREG, YL
pop YL
endm
endm
#include "asmcommon.inc"

22
avr/bootloader/usbdrv/usbdrvasm20.inc
View File

@ -1,12 +1,12 @@
/* Name: usbdrvasm20.inc
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
* Project: AVR USB driver
* Author: Jeroen Benschop
* Based on usbdrvasm16.inc from Christian Starkjohann
* Creation Date: 2008-03-05
* Tabsize: 4
* Copyright: (c) 2008 by Jeroen Benschop and OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm20.inc 740 2009-04-13 18:23:31Z cs $
* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
* Revision: $Id: usbdrvasm20.inc 607 2008-05-13 15:57:28Z cs $
*/
/* Do not link this file! Link usbdrvasm.S instead, which includes the
@ -57,13 +57,10 @@ USB_INTR_VECTOR:
;----------------------------------------------------------------------------
;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
;The first part waits at most 1 bit long since we must be in sync pattern.
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
;waitForJ, ensure that this prerequisite is met.
;first part has no timeout because it waits for IDLE or SE1 (== disconnected)
waitForJ:
inc YL
sbis USBIN, USBMINUS
brne waitForJ ; just make sure we have ANY timeout
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]
@ -89,9 +86,6 @@ waitForK:
inc YL
sts usbSofCount, YL
#endif /* USB_COUNT_SOF */
#ifdef USB_SOF_HOOK
USB_SOF_HOOK
#endif
rjmp sofError
foundK: ;[-16]
;{3, 5} after falling D- edge, average delay: 4 cycles
@ -238,13 +232,13 @@ macro POP_STANDARD ; 14 cycles
pop x1
pop shift
pop bitcnt
endm
endm
macro POP_RETI ; 7 cycles
pop YH
pop YL
out SREG, YL
pop YL
endm
endm