#/* THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
# * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
# * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
# * THE AUTHORS SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
# * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. USE IT AT YOUR OWN RISK */

ARCH = arm-none-eabi
top_srcdir=${PWD}
LPC=${top_srcdir}/lpc17xx
DRV=${top_srcdir}/drivers
SRC=${top_srcdir}/src

PROJ=p2m
EXECNAME=$(PROJ).elf

# Tool definitions
CC = $(ARCH)-gcc
LD = $(ARCH)-ld
AR = $(ARCH)-ar
AS = $(ARCH)-as
CP = $(ARCH)-objcopy
OD = $(ARCH)-objdump
SIZE = $(ARCH)-size
RM = rm
#Q	= # @./quiet "$@"

# Flags
CFLAGS   = -W -Wall -Werror -O0 --std=gnu99 -fgnu89-inline -mcpu=cortex-m3 -mthumb
CFLAGS  += -ffunction-sections -fdata-sections
CFLAGS  += -I${LPC} -I${DRV}
ASFLAGS  =
LDFLAGS  = --gc-sections

STDLIB_LDFLAGS =
#STDLIB_LDFLAGS += -L/home/deva/lib/arm/arm-toolchain/lib/gcc/arm-none-eabi/4.6.2/
#STDLIB_LDFLAGS += -L/home/deva/lib/arm/arm-toolchain/arm-none-eabi/lib/
#STDLIB_LDFLAGS += -lc -lgcc

CPFLAGS  =
ODFLAGS  = -x --syms
PRFLAGS ?=

# Source files
LINKER_SCRIPT = ${LPC}/LPC17xx.ld
CSRCS  = \
	${LPC}/startup_LPC17xx.c \
	${LPC}/system_LPC17xx.c \
	${LPC}/lpc17xx_clkpwr.c \
	$(wildcard ${SRC}/*.c) \
	$(wildcard ${DRV}/*.c)

CSRCS += ${SRC}/${PROJ}.c
ASRCS  = 


OBJS   = $(CSRCS:.c=.o) $(ASRCS:.s=.o)

.PHONY: all size clean nuke

all: ${PROJ}.bin ${PROJ}.hex 

size: ${PROJ}.elf
	@$(SIZE) $<

%.hex: %.elf
	$Q $(CP) $(CPFLAGS) -O ihex $< $*.hex

%.bin: %.elf
	$Q $(CP) $(CPFLAGS) -O binary $< $*.bin

${PROJ}.elf: $(LINKER_SCRIPT) $(OBJS)
	$Q $(LD) -Map $(@:.elf=.map) $(LDFLAGS) -T $^ -o $@ $(STDLIB_LDFLAGS)
	$Q $(OD) $(ODFLAGS) $@ > $(@:.elf=.dump)
	@$(SIZE) $@

%.o: %.c
	@$(CC) -MM $< -MF $*.d -MP
	$Q $(CC) -c $(CFLAGS) $< -o $@

%.o: %.S
	$Q $(AS) $(ASFLAGS) $< -o $@

clean:
	@-$(RM) -f *.elf
	@-\
for D in "." "**"; do \
  $(RM) -f $$D/*.o $$D/*.d $$D/*.lst $$D/*.dump $$D/*.map; \
done

nuke: clean
	-$(RM) -f *.hex *.bin

.PHONY : flash
#flash: $(EXECNAME)
#	$(CP) -O ihex $(EXECNAME) $(PROJ).hex
#	openocd -f openocd.cfg -c 'flash write_image erase $(PROJ).hex' -c 'verify_image $(PROJ).hex' -c 'reset run'
flash: $(EXECNAME)
	$(CP) -O binary $(EXECNAME) $(PROJ).bin
	./fix-lpcchecksum $(PROJ).bin
	openocd -f openocd.cfg \
		-c 'flash write_image erase $(PROJ).bin' \
		-c 'verify_image $(PROJ).bin' \
		-c 'reset run'

-include $(CSRCS:.c=.d)