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# makefile, written by guido socher
MCU=atmega645
FILE=blik
#MCU=at90s4433
CC=avr-gcc
OBJCOPY=avr-objcopy
# optimize for size:
CFLAGS=-g -mmcu=$(MCU) -Wall -Os
#-------------------
all: $(FILE).hex
#-------------------
help:
@echo "Usage: make all|load|load_pre|rdfuses|wrfuse1mhz|wrfuse4mhz|wrfusecrystal"
@echo "Warning: you will not be able to undo wrfusecrystal unless you connect an"
@echo " external crystal! uC is dead after wrfusecrystal if you do not"
@echo " have an external crystal."
#-------------------
$(FILE).hex : $(FILE).out
$(OBJCOPY) -R .eeprom -O ihex $(FILE).out $(FILE).hex
$(FILE).out : $(FILE).o
$(CC) $(CFLAGS) -o $(FILE).out -Wl,-Map,$(FILE).map $(FILE).o
$(FILE).o : $(FILE).c
$(CC) $(CFLAGS) -Os -c $(FILE).c
#------------------
load: $(FILE).hex
./prg_load_uc $(FILE).hex
# here is a pre-compiled version in case you have trouble with
# your development environment
load_pre: $(FILE).hex
./prg_load_uc $(FILE)_pre.hex
#
loaduisp: $(FILE).hex
./prg_load_uc -u $(FILE).hex
# here is a pre-compiled version in case you have trouble with
# your development environment
load_preuisp: $(FILE)_pre.hex
./prg_load_uc -u avrm8ledtest.hex
#-------------------
# fuse byte settings:
# Atmel AVR ATmega8
# Fuse Low Byte = 0xe1 (1MHz internal), 0xe3 (4MHz internal), 0xe4 (8MHz internal)
# Fuse High Byte = 0xd9
# Factory default is 0xe1 for low byte and 0xd9 for high byte
# Check this with make rdfuses
rdfuses:
./prg_fusebit_uc -r
# use internal RC oscillator 1 Mhz
wrfuse1mhz:
./prg_fusebit_uc -w 1
# use internal RC oscillator 4 Mhz
wrfuse4mhz:
./prg_fusebit_uc -w 4
# use external 3-8 Mhz crystal
# Warning: you can not reset this to intenal unless you connect a crystal!!
wrfusecrystal:
@echo "Warning: The external crystal setting can not be changed back without a working crystal"
@echo " You have 3 seconds to abort this with crtl-c"
@sleep 3
./prg_fusebit_uc -w 0
#-------------------
clean:
rm -f *.o *.map *.out *t.hex
#-------------------