CC = avr-gcc
GDB = avr-gdb
DDD = ddd
DEBUGGER = ddd
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
ASFLAGS = -Wa,-ahlms=$(<:.S=.lst),-gstabs
CFLAGS = -O$(OPT) -g -funsigned-char -funsigned-bitfields -fpack-struct \
    -fshort-enums -Wall -Wstrict-prototypes -Wa,-ahlms=$(<:.c=.lst) -mcall-prologues
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref 
UISP = uisp
UISPFLAGS = -v
UISPPROG = stk500
UISPDEV = /dev/ttyS0
UISPFLAGS = --rd_vtg --rd_aref --rd_osc -v
AVARICE = avarice
JTAGICEDEV = /dev/ttyS0
JTAGICEPORT = 4242
INCLUDES= 
LIBS = 

#Define part here

#MCU = attiny12
MCU = atmega32

# Additional libraries
#
# Minimalistic printf version
# LDFLAGS += -Wl,-u,vfprintf -lprintf_min
#
# Floating point printf version (requires -lm below)
#LDFLAGS +=  -Wl,-u,vfprintf -lprintf_flt
#
# -lm = math library
#LDFLAGS += -lm


FORMAT = ihex
OPT = s
PROGMETHOD = progice

TARGET = t
CSRC = a.c
ASRC = 

# Configurables end here

OBJS = $(CSRC:.c=.o) $(ASRC:.S=.o)
LST = $(ASRC:.S=.lst) $(NSRC:.c=.lst)

.PHONY:= all debug progice prog progflash progeep size clean
.PRECIOUS: $(OBJS)
.SECONDARY:

all: $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).lss size

debug: $(TARGET).elf
	$(AVARICE) --file $(TARGET).elf --jtag $(JTAGICEDEV) \
		--detach localhost:$(JTAGICEPORT)
	echo 'set remoteaddresssize 32' > .avaricetmp
	echo 'set remote Z-packet enable' >> .avaricetmp
	echo 'set remote step-over-range-packet enable' >> .avaricetmp
#   These don't work in my version of gdb. 
#	echo 'set remote hardware-breakpoint-limit 3' >> .avaricetmp
#	echo 'set remote hardware-watchpoint-limit 2'  >> .avaricetmp
	echo 'file $(TARGET).elf' >> .avaricetmp
	echo 'target extended-remote localhost:$(JTAGICEPORT)' >> .avaricetmp

ifeq ($(DEBUGGER),ddd)
	$(DDD) --debugger '$(GDB) -x .avaricetmp'
else
	$(GDB) -x .avaricetmp 
endif
	killall -TERM avarice
	rm .avaricetmp

prog: $(PROGMETHOD)

progice: $(TARGET).elf
	$(AVARICE) --file $(TARGET).elf --jtag $(JTAGICEDEV) --program --verify
    
progflash: $(TARGET).hex
	$(UISP) -dprog=$(UISPPROG) -dserial=$(UISPDEV) -dpart=$(MCU) $(UISPFLAGS) --segment=flash --erase --upload --verify if=$<

progeep: $(TARGET).eep
	$(UISP) -dprog=$(UISPPROG) -dserial=$(UISPDEV) -dpart=$(MCU) $(UISPFLAGS) --segment=eeprom --erase --upload --verify if=$<

progboth: $(TARGET).hex $(TARGET).eep
	$(UISP) -dprog=$(UISPPROG) -dserial=$(UISPDEV) -dpart=$(MCU) $(UISPFLAGS) --segment=flash --erase --upload --verify if=$(TARGET).hex
#  EEPROM writing doesn't seem to work for Tiny12
	$(UISP) -dprog=$(UISPPROG) -dserial=$(UISPDEV) -dpart=$(MCU) $(UISPFLAGS) --segment=eeprom --upload --verify if=$(TARGET).eep

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

%.eep: %.elf
	$(OBJCOPY) -O$(FORMAT) -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 $< $@

%.srec: %.elf
	$(OBJCOPY) $< $@ -R .eeprom -Osrec

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

%.bin: %.elf
	$(OBJCOPY) -Obinary -R .eeprom $< $@ 

%.elf: $(OBJS)
	$(CC) -mmcu=$(MCU) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@ 

%.o: %.c
	$(CC) -mmcu=$(MCU) $(CFLAGS) $(INCLUDES) -c $< -o $@

%.o: %.S
	$(CC) -mmcu=$(MCU) $(ASFLAGS) $(INCLUDES) -c $< -o $@

%.s: %.c
	$(CC) -mmcu=$(MCU) $(CFLAGS) $(INCLUDES) -S $< -o $@

%.s: %.S
	$(CC) -mmcu=$(MCU) $(ASFLAGS) $(INCLUDES) -S $< > $@

%.lss: %.elf
	$(OBJDUMP) -h -S $< > $@

size:
	@if [ -f $(TARGET).elf ]; then echo Size:; avr-size -A $(TARGET).elf; fi

clean:
	rm -f $(TARGET).hex
	rm -f $(TARGET).srec
	rm -f $(TARGET).eep
	rm -f $(TARGET).bin
	rm -f $(TARGET).elf
	rm -f $(TARGET).map
	rm -f $(TARGET).lss
	rm -f $(OBJS)
	rm -f $(LST)
	rm -f $(CSRC:.c=.s)
	rm -f $(CSRC:.c=.d)