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## Change these:
## HWREV:
## 0 -> initial revision
MMCU = atxmega16a4
DEFINES = -DF_CPU=2000000 -DHWREV=0
# -b baudrate
AVRDUDE = avrdude -P usb -c jtag3pdi -p $(MMCU)
#-------------------------------------------------------------------------------
HEADERS = twi_master_driver.h twi_slave_driver.h eeprom_driver.h avr_compiler.h
SOURCES = twi_master_driver.c twi_slave_driver.c eeprom_driver.c edid_injector.c
OBJECTS = $(SOURCES:.c=.o)
INCLUDES = -I.
VPATH = .
#-------------------------------------------------------------------------------
CC = avr-gcc
CFLAGS = -W -Wall -Os -std=gnu99 -Werror-implicit-function-declaration
all: firmware.bin firmware.hex
run: all prg
firmware.elf: $(OBJECTS)
$(CC) -s -mmcu=$(MMCU) $(OBJECTS) -o firmware.elf
%.o: %.c $(HEADERS)
$(CC) $(INCLUDES) -mmcu=$(MMCU) $(CPPFLAGS) $(CFLAGS) $(DEFINES) -c $<
# FUSEBYTE0: JTAG user ID (arbitrary)
# FUSEBYTE1:
# bits 7..4: Watchdog Window Timeout Period
# bits 3..0: Watchdog Timeout Period
# FUSEBYTE2:
# bit 6: BOOTRST
# 0: Reset vector = Boot loader reset
# 1: Reset vector = Application reset (address 0x0000)
# bit 5: TOSCSEL (32768 kHz osc pin position; usually 1)
# bits 1..0: BODPD[1:0]: (in power-down mode)
# 10 = BOD enabled continuously
# 11 = BOD disabled
# FUSEBYTE4:
# bit 4: RSTDISBL 0: disable reset
# bits 3..2: STARTUPTIME[1:0] 11/01/00: wait 0/4/64 cycles
# bit 1: WDLOCK 1: watchdog timer not locked
# bit 0: JTAGEN 1: JTAG disabled
# FUSEBYTE5:
# bits 5..4: BODACT[1:0]
# 10 = BOD enabled continuously
# 11 = BOD disabled
# bit 3: EESAVE 0: EEPROM is preserved during chip erase
# bits 2..0: BODLEVEL[2:0]
# 111: 1.6 011: 2.4
# 110: 1.8 010: 2.6
# 101: 2.0 001: 2.8
# 100: 2.2 000: 3.0
program_fuses:
$(AVRDUDE) \
-Ufuse0:w:0xff:m -Ufuse1:w:0x66:m -Ufuse2:w:0xfe:m
-Ufuse5:w:0xeb:m -Ufuse4:w:0xff:m
prg: firmware.hex
$(AVRDUDE) -Uflash:w:firmware.hex:i
dump: firmware.elf
avr-objdump -D firmware.elf
clean:
-rm -f firmware.bin firmware.elf firmware.hex
-rm -f *.o
firmware.hex: firmware.elf
avr-objcopy -j .text -j .data -O ihex firmware.elf firmware.hex
firmware.bin: firmware.elf
avr-objcopy -j .text -j .data -O binary firmware.elf firmware.bin
@ls -l firmware.bin
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