# (C) 2020 Philip Endecott.
# Distributed under the Boost Software License, Version 1.0.
# See accompanying file LICENCE.txt or copy at https://www.boost.org/LICENSE_1_0.txt

ARCH=arm-none-eabi
CPU=arm7tdmi-s
AS=${ARCH}-as
CFLAGS=-mcpu=${CPU}
CC=${ARCH}-gcc
CFLAGS=-mcpu=${CPU} -mthumb -Os -W -Wall -DRAD_CONTROLLER
# -DENABLE_DEBUG
CXX=${ARCH}-g++
CXXFLAGS=${CFLAGS} --std=c++17 -fno-exceptions
LD=${ARCH}-ld
NEWLIBDIR=/usr/lib/${ARCH}/newlib/thumb
# There are several newlib buils for different architecture variants, all 
# installed by the Debian package; this one seems to be armv4t.
GCCLIBDIR=/usr/lib/gcc/${ARCH}/7.3.1/thumb
LDFLAGS=-L${NEWLIBDIR} -L${GCCLIBDIR}
OBJCOPY=${ARCH}-objcopy


%.o: %.s
	${AS} ${ASFLAGS} -o $@ $<

%.o: %.c
	${CC} ${CFLAGS} -c $<

%.o: %.cc
	${CXX} ${CXXFLAGS} -c $<

%.elf: %.o vectors.o start.o stubs.o lipstick.ld
	${LD} --script=lipstick.ld -o $@ ${LDFLAGS} vectors.o start.o $< --start-group -lc stubs.o -lgcc --end-group

%.hex: %.elf
	${OBJCOPY} $< -O ihex $@

BAUD=38400
PORT=/dev/ttyUSB0

%.prog: %.hex
	lpc21isp $< ${PORT} ${BAUD} 19660

%.progterm: %.hex
	lpc21isp -term $< ${PORT} ${BAUD} 19660


.SECONDARY:
# Causes all intermediates, i.e. .o and .elf files, to be kept.

.PHONY: %.prog %.progterm


hello_world.o: registers.hh

demo.o: adc.hh arm.hh clocks.hh registers.hh rtc.hh uart.hh circular_buffer.hh

modbus.o: adc.hh arm.hh clocks.hh registers.hh rtc.hh uart.hh buffer.hh timer.hh wdt.hh power.hh