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# makefile, written by guido socher
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# makefile, written by guido socher
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MCU=atmega8
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MCU=atmega8
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#MCU=at90s4433
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#MCU=at90s4433
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CC=avr-gcc
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CC=avr-gcc
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OBJCOPY=avr-objcopy
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OBJCOPY=avr-objcopy
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# optimize for size:
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# optimize for size:
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CFLAGS=-g -mmcu=$(MCU) -Wall -Wstrict-prototypes -Os -mcall-prologues
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CFLAGS=-g -mmcu=$(MCU) -Wall -Wstrict-prototypes -Os -mcall-prologues
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#-------------------
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#-------------------
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all: avrm8ledtest.hex
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all: avrm8ledtest.hex
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#-------------------
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#-------------------
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help:
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help:
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@echo "Usage: make all|load|load_pre|rdfuses|wrfuse1mhz|wrfuse4mhz|wrfusecrystal"
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@echo "Usage: make all|load|load_pre|rdfuses|wrfuse1mhz|wrfuse4mhz|wrfusecrystal"
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@echo "Warning: you will not be able to undo wrfusecrystal unless you connect an"
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@echo "Warning: you will not be able to undo wrfusecrystal unless you connect an"
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@echo " external crystal! uC is dead after wrfusecrystal if you do not"
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@echo " external crystal! uC is dead after wrfusecrystal if you do not"
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@echo " have an external crystal."
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@echo " have an external crystal."
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#-------------------
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#-------------------
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avrm8ledtest.hex : avrm8ledtest.out
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avrm8ledtest.hex : avrm8ledtest.out
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$(OBJCOPY) -R .eeprom -O ihex avrm8ledtest.out avrm8ledtest.hex
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$(OBJCOPY) -R .eeprom -O ihex avrm8ledtest.out avrm8ledtest.hex
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avrm8ledtest.out : avrm8ledtest.o
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avrm8ledtest.out : avrm8ledtest.o
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$(CC) $(CFLAGS) -o avrm8ledtest.out -Wl,-Map,avrm8ledtest.map avrm8ledtest.o
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$(CC) $(CFLAGS) -o avrm8ledtest.out -Wl,-Map,avrm8ledtest.map avrm8ledtest.o
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avrm8ledtest.o : avrm8ledtest.c
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avrm8ledtest.o : avrm8ledtest.c
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$(CC) $(CFLAGS) -Os -c avrm8ledtest.c
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$(CC) $(CFLAGS) -Os -c avrm8ledtest.c
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#------------------
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#------------------
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load: avrm8ledtest.hex
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load: avrm8ledtest.hex
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./prg_load_uc avrm8ledtest.hex
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./prg_load_uc avrm8ledtest.hex
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# here is a pre-compiled version in case you have trouble with
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# here is a pre-compiled version in case you have trouble with
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# your development environment
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# your development environment
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load_pre: avrm8ledtest_pre.hex
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load_pre: avrm8ledtest_pre.hex
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./prg_load_uc avrm8ledtest.hex
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./prg_load_uc avrm8ledtest.hex
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#
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#
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loaduisp: avrm8ledtest.hex
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loaduisp: avrm8ledtest.hex
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./prg_load_uc -u avrm8ledtest.hex
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./prg_load_uc -u avrm8ledtest.hex
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# here is a pre-compiled version in case you have trouble with
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# here is a pre-compiled version in case you have trouble with
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# your development environment
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# your development environment
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load_preuisp: avrm8ledtest_pre.hex
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load_preuisp: avrm8ledtest_pre.hex
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./prg_load_uc -u avrm8ledtest.hex
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./prg_load_uc -u avrm8ledtest.hex
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#-------------------
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#-------------------
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# fuse byte settings:
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# fuse byte settings:
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# Atmel AVR ATmega8
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# Atmel AVR ATmega8
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# Fuse Low Byte = 0xe1 (1MHz internal), 0xe3 (4MHz internal), 0xe4 (8MHz internal)
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# Fuse Low Byte = 0xe1 (1MHz internal), 0xe3 (4MHz internal), 0xe4 (8MHz internal)
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# Fuse High Byte = 0xd9
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# Fuse High Byte = 0xd9
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# Factory default is 0xe1 for low byte and 0xd9 for high byte
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# Factory default is 0xe1 for low byte and 0xd9 for high byte
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# Check this with make rdfuses
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# Check this with make rdfuses
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rdfuses:
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rdfuses:
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./prg_fusebit_uc -r
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./prg_fusebit_uc -r
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# use internal RC oscillator 1 Mhz
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# use internal RC oscillator 1 Mhz
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wrfuse1mhz:
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wrfuse1mhz:
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./prg_fusebit_uc -w 1
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./prg_fusebit_uc -w 1
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# use internal RC oscillator 4 Mhz
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# use internal RC oscillator 4 Mhz
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wrfuse4mhz:
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wrfuse4mhz:
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./prg_fusebit_uc -w 4
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./prg_fusebit_uc -w 4
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# use external 3-8 Mhz crystal
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# use external 3-8 Mhz crystal
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# Warning: you can not reset this to intenal unless you connect a crystal!!
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# Warning: you can not reset this to intenal unless you connect a crystal!!
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wrfusecrystal:
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wrfusecrystal:
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@echo "Warning: The external crystal setting can not be changed back without a working crystal"
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@echo "Warning: The external crystal setting can not be changed back without a working crystal"
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@echo " You have 3 seconds to abort this with crtl-c"
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@echo " You have 3 seconds to abort this with crtl-c"
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@sleep 3
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@sleep 3
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./prg_fusebit_uc -w 0
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./prg_fusebit_uc -w 0
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#-------------------
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#-------------------
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clean:
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clean:
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rm -f *.o *.map *.out *t.hex
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rm -f *.o *.map *.out *t.hex
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#-------------------
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#-------------------
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