CPU_StepperControl = atmega16m1
CPU_ECRIS_REMOTE=atxmega128a1
CPU_lcd=atmega16
CPU_sologse=atmega644
CPU_chaos=atmega32m1
CPU_leia=atmega32m1

pMCU-atmega16m1 = m16
pMCU-atmega32m1 = m32m1
pMCU-atmega16   = m16
pMCU-atmega644  = m644

MCU = $(CPU_$*)

CC=avr-gcc -Wall -Wno-parentheses -MMD -std=c99 -O2 -mmcu=$(MCU) \
  -funsigned-char \
  -funsigned-bitfields \
  -fpack-struct \
  -fshort-enums

CFLAGS = $($*_CFLAGS) $(DEBUG)

%.s: %.c revision.h
	$(CC) -S $(CFLAGS) -fverbose-asm $<

%.o: %.c revision.h
	$(CC) -g -c $(CFLAGS) $<

revision.h: .git
	git log --pretty='#define Revision 0x%h'     --abbrev=8 HEAD^! >  revision.h+
	git log --pretty='#define Id "0x%h %as %an"' --abbrev=8 HEAD^! >> revision.h+
	diff -q revision.h+ revision.h || \mv -v revision.h+ revision.h

-include *.d


LDFLAGS = 

%.elf: %.o
	$(CC) $(CFLAGS) -Wl,-Map=$*.map,--cref $^ --output $@ $(LDFLAGS)

OBJCOPY = avr-objcopy

%.hex: %.elf
	$(OBJCOPY) -O ihex -R .eeprom $< $@

%.eeprom: %.elf
	$(OBJCOPY) -O ihex -j .eeprom --change-section-lma .eeprom=0 $< $@

AVRDUDE = avrdude
AVRDUDE_PROGRAMMER = avrispmkii
AVRDUDE_PORT = usb
AVRDUDE_WRITE_FLASH = -U flash:w:$<

AD = $(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)

%.burn: %.hex
	$(AD) -U flash:v:$< || $(AD) -U flash:w:$<

lfuse_lcd=0xff

# CKDIV8 : no
# CKOUT: yes, on PB1, pin 41
# SUT: max
# CLKSEL: external clock
lfuse_sologse=0xA0

lfuse_chaos=0xef
chaos_CFLAGS = -I.
chaos.o: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h hvled.h
chaos.s: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h hvled.h
chaos.hex: chaos.eeprom

lfuse_leia=0xef
leia_CFLAGS = -I.
leia.o: spi_slave.h
leia.s: spi_slave.h
leia.hex: leia.eeprom

%.lfuse:
	$(AD) -B 5 -U lfuse:w:$(lfuse_$*):m

%.id:
	$(AD) -B 5 -U lfuse:v:$(lfuse_$*):m

clean:
	rm -f *.hex *.o *.s *.map *.elf *.d 

VPATH = .:LCD/lcd_slave_sync:sologse:chaos:leia
lcd_CFLAGS = -I. -DDEBUG
lcd.o: lcd.c spi_slave.h lcd_routines.h lcd_routines.c uart_atmega16.c

.PHONY: eeprom.eeprom
%.eeprom.eeprom: %.hex
	$(AD) -U eeprom:r:$@
%.eeprom.burn: %.eeprom
	$(AD) -U eeprom:v:$< || $(AD) -U eeprom:w:$< 

%.ad:
	$(AD) -v -t