initial commit

Changelog.txt

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+This file documents changes in the firmware of USBaspLoader.
+New entries are always appended to the end of the file. Scroll down to the
+bottom to see the most recent changes.
+
+
+* Release 2008-01-21
+
+- Use most recent driver.
+
+* Release 2008-02-05
+
+- Disable USB interrupt before we jump to loaded application. Applications
+  which don't use INT0 would otherwise crash when they perform sei().
+- Revert all config changes to RESET condition before we jump to application.
+- Code size optimizations suggested by Alexander Neumann.
+
+* Release 2009-03-20
+
+- Added some optimizations so that the boot loader can be used with gcc 4.3.
+- Added fuse options (as comments) for ATMega328p to Makefile and include in
+  precompiled hex files.
+- Updated usbconfig.h to the latest template (mostly new comments).
+
+* Release 2010-07-27
+
+* Release 2012-08-08
+
+- by Louis Beaudoin (Embedded-Creations.com)
+- Added support for ATtiny85 
+

firmware/Makefile

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+# Name: Makefile
+# Project: USBaspLoader
+# Author: Christian Starkjohann
+# Creation Date: 2007-12-10
+# Tabsize: 4
+# Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
+# License: GNU GPL v2 (see License.txt)
+# This Revision: $Id: Makefile 798 2010-07-27 17:29:28Z cs $
+
+###############################################################################
+# Configure the following variables according to your AVR.
+# Program the device with
+#     make fuse    			# to set the clock generator, boot section size etc.
+#     make flash   			# to load the boot loader into flash
+#     make lock    			# to protect the boot loader from overwriting
+#     make disablereset		# for ATtiny85 target - to use external reset line for IO (CAUTION: this is not easy to enable again, see README) 
+
+F_CPU = 16500000
+DEVICE = attiny85
+# BOOTLOADER_ADDRESS is 1800 for 8k devices, 3800 for 16k and 7800 for 32k.
+# 	Can be on the start of any flash page for ATtiny85, but must be set low enough so there is space for the full boot loader
+BOOTLOADER_ADDRESS = 1500
+FUSEOPT = $(FUSEOPT_t85)
+LOCKOPT = -U lock:w:0x2f:m
+
+PROGRAMMER = -c USBasp
+# PROGRAMMER contains AVRDUDE options to address your programmer
+
+FUSEOPT_8 = -U hfuse:w:0xc0:m -U lfuse:w:0x9f:m
+FUSEOPT_88 = -U hfuse:w:0xd6:m -U lfuse:w:0xdf:m -U efuse:w:0x00:m
+FUSEOPT_168 = -U hfuse:w:0xd6:m -U lfuse:w:0xdf:m -U efuse:w:0x00:m
+FUSEOPT_328 = -U lfuse:w:0xf7:m -U hfuse:w:0xda:m -U efuse:w:0x03:m
+FUSEOPT_t85 = -U lfuse:w:0xe1:m -U hfuse:w:0xdd:m -U efuse:w:0xfe:m
+FUSEOPT_t85_DISABLERESET = -U lfuse:w:0xe1:m -U efuse:w:0xfe:m -U hfuse:w:0x5d:m
+# You may have to change the order of these -U commands.
+
+#---------------------------------------------------------------------
+# ATMega8
+#---------------------------------------------------------------------
+# Fuse high byte:
+# 0xc0 = 1 1 0 0   0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800)
+#        ^ ^ ^ ^   ^ ^ ^------ BOOTSZ0
+#        | | | |   | +-------- BOOTSZ1
+#        | | | |   + --------- EESAVE (preserve EEPROM over chip erase)
+#        | | | +-------------- CKOPT (full output swing)
+#        | | +---------------- SPIEN (allow serial programming)
+#        | +------------------ WDTON (WDT not always on)
+#        +-------------------- RSTDISBL (reset pin is enabled)
+# Fuse low byte:
+# 0x9f = 1 0 0 1   1 1 1 1
+#        ^ ^ \ /   \--+--/
+#        | |  |       +------- CKSEL 3..0 (external >8M crystal)
+#        | |  +--------------- SUT 1..0 (crystal osc, BOD enabled)
+#        | +------------------ BODEN (BrownOut Detector enabled)
+#        +-------------------- BODLEVEL (2.7V)
+#---------------------------------------------------------------------
+# ATMega88, ATMega168
+#---------------------------------------------------------------------
+# Fuse extended byte:
+# 0x00 = 0 0 0 0   0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800)
+#                    \+/
+#                     +------- BOOTSZ (00 = 2k bytes)
+# Fuse high byte:
+# 0xd6 = 1 1 0 1   0 1 1 0
+#        ^ ^ ^ ^   ^ \-+-/
+#        | | | |   |   +------ BODLEVEL 0..2 (110 = 1.8 V)
+#        | | | |   + --------- EESAVE (preserve EEPROM over chip erase)
+#        | | | +-------------- WDTON (if 0: watchdog always on)
+#        | | +---------------- SPIEN (allow serial programming)
+#        | +------------------ DWEN (debug wire enable)
+#        +-------------------- RSTDISBL (reset pin is enabled)
+# Fuse low byte:
+# 0xdf = 1 1 0 1   1 1 1 1
+#        ^ ^ \ /   \--+--/
+#        | |  |       +------- CKSEL 3..0 (external >8M crystal)
+#        | |  +--------------- SUT 1..0 (crystal osc, BOD enabled)
+#        | +------------------ CKOUT (if 0: Clock output enabled)
+#        +-------------------- CKDIV8 (if 0: divide by 8)
+#---------------------------------------------------------------------
+# ATMega328P
+#---------------------------------------------------------------------
+# Fuse extended byte:
+# 0x03 = - - - -   - 0 1 1
+#                    \-+-/
+#                      +------ BODLEVEL 0..2 (011 = 4.3V)
+# Fuse high byte:
+# 0xda = 1 1 0 1   1 0 1 0 <-- BOOTRST (0 = jump to bootloader at start)
+#        ^ ^ ^ ^   ^ \+/
+#        | | | |   |  +------- BOOTSZ 0..1 (01 = 2KB starting at 0x7800)
+#        | | | |   + --------- EESAVE (don't preserve EEPROM over chip erase)
+#        | | | +-------------- WDTON (1 = watchdog disabled at start)
+#        | | +---------------- SPIEN (0 = allow serial programming)
+#        | +------------------ DWEN (1 = debug wire disable)
+#        +-------------------- RSTDISBL (1 = reset pin is enabled)
+# Fuse low byte:
+# 0xf7 = 1 1 1 1   0 1 1 1
+#        ^ ^ \ /   \--+--/
+#        | |  |       +------- CKSEL 3..0 (0111 = external full-swing crystal)
+#        | |  +--------------- SUT 1..0 (11 = startup time 16K CK/14K + 65ms)
+#        | +------------------ CKOUT (1 = clock output disabled)
+#        +-------------------- CKDIV8 (1 = do not divide clock by 8)
+#---------------------------------------------------------------------
+# ATtiny85
+#---------------------------------------------------------------------
+# Fuse extended byte:
+# 0xFE = - - - -   - 1 1 0
+#                        ^
+#                        |
+#                        +---- SELFPRGEN (enable self programming flash)
+#
+# Fuse high byte:
+# 0xdd = 1 1 0 1   1 1 0 1
+#        ^ ^ ^ ^   ^ \-+-/ 
+#        | | | |   |   +------ BODLEVEL 2..0 (brownout trigger level -> 2.7V)
+#        | | | |   +---------- EESAVE (preserve EEPROM on Chip Erase -> not preserved)
+#        | | | +-------------- WDTON (watchdog timer always on -> disable)
+#        | | +---------------- SPIEN (enable serial programming -> enabled)
+#        | +------------------ DWEN (debug wire enable)
+#        +-------------------- RSTDISBL (disable external reset -> enabled)
+#
+# Fuse high byte ("no reset": external reset disabled, can't program through SPI anymore)
+# 0x5d = 0 1 0 1   1 1 0 1
+#        ^ ^ ^ ^   ^ \-+-/ 
+#        | | | |   |   +------ BODLEVEL 2..0 (brownout trigger level -> 2.7V)
+#        | | | |   +---------- EESAVE (preserve EEPROM on Chip Erase -> not preserved)
+#        | | | +-------------- WDTON (watchdog timer always on -> disable)
+#        | | +---------------- SPIEN (enable serial programming -> enabled)
+#        | +------------------ DWEN (debug wire enable)
+#        +-------------------- RSTDISBL (disable external reset -> disabled!)
+#
+# Fuse low byte:
+# 0xe1 = 1 1 1 0   0 0 0 1
+#        ^ ^ \+/   \--+--/
+#        | |  |       +------- CKSEL 3..0 (clock selection -> HF PLL)
+#        | |  +--------------- SUT 1..0 (BOD enabled, fast rising power)
+#        | +------------------ CKOUT (clock output on CKOUT pin -> disabled)
+#        +-------------------- CKDIV8 (divide clock by 8 -> don't divide)
+
+###############################################################################
+
+# Tools:
+AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
+CC = avr-gcc
+
+# Options:
+DEFINES = -DBOOTLOADER_ADDRESS=0x$(BOOTLOADER_ADDRESS) #-DDEBUG_LEVEL=2
+# Remove the -fno-* options when you use gcc 3, it does not understand them
+CFLAGS = -Wall -Os -fno-move-loop-invariants -fno-tree-scev-cprop -fno-inline-small-functions -I. -Ilibs-device -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) $(DEFINES)
+LDFLAGS = -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS),-Map=main.map
+
+OBJECTS =  usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o
+OBJECTS += libs-device/osccal.o
+
+# symbolic targets:
+all: main.hex
+
+.c.o:
+	$(CC) $(CFLAGS) -c $< -o $@ -Wa,-ahls=$<.lst
+
+.S.o:
+	$(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@
+# "-x assembler-with-cpp" should not be necessary since this is the default
+# file type for the .S (with capital S) extension. However, upper case
+# characters are not always preserved on Windows. To ensure WinAVR
+# compatibility define the file type manually.
+
+.c.s:
+	$(CC) $(CFLAGS) -S $< -o $@
+
+flash:	all
+	$(AVRDUDE) -U flash:w:main.hex:i
+
+readflash:
+	$(AVRDUDE) -U flash:r:read.hex:i
+
+fuse:
+	$(AVRDUDE) $(FUSEOPT)
+
+disablereset:
+	$(AVRDUDE) $(FUSEOPT_t85_DISABLERESET)
+
+lock:
+	$(AVRDUDE) $(LOCKOPT)
+
+read_fuses:
+	$(UISP) --rd_fuses
+
+clean:
+	rm -f main.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s libs-device/osccal.o
+
+# file targets:
+main.bin:	$(OBJECTS)
+	$(CC) $(CFLAGS) -o main.bin $(OBJECTS) $(LDFLAGS)
+
+main.hex:	main.bin
+	rm -f main.hex main.eep.hex
+	avr-objcopy -j .text -j .data -O ihex main.bin main.hex
+	avr-size main.hex
+
+disasm:	main.bin
+	avr-objdump -d main.bin
+
+cpp:
+	$(CC) $(CFLAGS) -E main.c
+
+# Special rules for generating hex files for various devices and clock speeds
+ALLHEXFILES = hexfiles/mega8_12mhz.hex hexfiles/mega8_15mhz.hex hexfiles/mega8_16mhz.hex \
+	hexfiles/mega88_12mhz.hex hexfiles/mega88_15mhz.hex hexfiles/mega88_16mhz.hex hexfiles/mega88_20mhz.hex\
+	hexfiles/mega168_12mhz.hex hexfiles/mega168_15mhz.hex hexfiles/mega168_16mhz.hex hexfiles/mega168_20mhz.hex\
+	hexfiles/mega328p_12mhz.hex hexfiles/mega328p_15mhz.hex hexfiles/mega328p_16mhz.hex hexfiles/mega328p_20mhz.hex
+
+allhexfiles: $(ALLHEXFILES)
+	$(MAKE) clean
+	avr-size hexfiles/*.hex
+
+$(ALLHEXFILES):
+	@[ -d hexfiles ] || mkdir hexfiles
+	@device=`echo $@ | sed -e 's|.*/mega||g' -e 's|_.*||g'`; \
+	clock=`echo $@ | sed -e 's|.*_||g' -e 's|mhz.*||g'`; \
+	addr=`echo $$device | sed -e 's/\([0-9]\)8/\1/g' | awk '{printf("%x", ($$1 - 2) * 1024)}'`; \
+	echo "### Make with F_CPU=$${clock}000000 DEVICE=atmega$$device BOOTLOADER_ADDRESS=$$addr"; \
+	$(MAKE) clean; \
+	$(MAKE) main.hex F_CPU=$${clock}000000 DEVICE=atmega$$device BOOTLOADER_ADDRESS=$$addr DEFINES=-DUSE_AUTOCONFIG=1
+	mv main.hex $@