# makefile, written by guido socher
# downloaded from http://linuxfocus.org/English/November2004/article352.shtml
# modified 2005-02-16 by Henrik Björkman to fit my application

HEADER_FILES=avr_cfg.h avr_uart.h avr_tmr0.h
OBJECT_FILES=havrapp.o avr_uart.o avr_tmr0.o



# Change here if you have another atmega microcontroller (MCU)
MCU=atmega88
#MCU=atmega8

# Some generic macros
CC=avr-gcc
OBJCOPY=avr-objcopy

# optimize for size:
CFLAGS=-g -mmcu=$(MCU) -Wall -Wstrict-prototypes -Os -mcall-prologues

#-------------------
all: havrapp.hex

#-------------------
help: 
	@echo "Usage: make [all]|load|load_pre|rdfuses|wrfuse1mhz|wrfuse4mhz|wrfuse8mhz|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."


#-------------------
havrapp.hex : havrapp.out 
	$(OBJCOPY) -R .eeprom -O ihex havrapp.out havrapp.hex 
havrapp.out : $(OBJECT_FILES)
	$(CC) $(CFLAGS) -o havrapp.out -Wl,-Map,havrapp.map $(OBJECT_FILES)


# you need to erase first before loading the program.
# this will erase and then write the software into the eeprom:
load: havrapp.hex
	uisp -dlpt=/dev/parport0 --erase  -dprog=dapa
	uisp -dlpt=/dev/parport0 --upload if=havrapp.hex -dprog=dapa  -v=3 --hash=32


#-------------------
# 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:
	uisp -dlpt=/dev/parport0 -dprog=dapa --rd_fuses
# use internal RC oscillator 1 Mhz
wrfuse1mhz:
	uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_l=0xe1
# use internal RC oscillator 4 Mhz
wrfuse4mhz:
	uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_l=0xe3
# use internal RC oscillator 8 Mhz
wrfuse8mhz:
	uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_l=0xe4
# use external 3-8 Mhz crystal
# Warning: you can not reset this to intenal unless you connect a crystal!!
wrfusecrystal:
	uisp -dlpt=/dev/parport0 -dprog=dapa --wr_fuse_l=0xee


#-------------------
clean:
	rm -f *.o *.map *.out *.hex
#-------------------