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IMAGE = fpga-tools
PODMAN = podman run --rm --cpus=$(shell nproc) -v $(CURDIR):/workspace $(IMAGE)
BUILD = build
# Which C program to build. Override: make PROG=test_uart
PROG ?= blink
override PROG := $(basename $(PROG))
$(BUILD):
mkdir -p $@
# -- Host-side C compilation (sdcc on host) --------------------------------------------
$(BUILD)/%.hex: fw/%.c | $(BUILD)
cd $(BUILD) && sdcc --use-non-free -mpic14 -p16f84a \
-Wl-s -Wl$(CURDIR)/fw/fpga_pic.lkr \
$(CURDIR)/fw/$*.c
# program.hex is what the testbench loads at runtime
$(BUILD)/program.hex: $(BUILD)/$(PROG).hex
cp $< $@
# prog_rom.vhd embeds the program for synthesis
hdl/prog_rom.vhd: $(BUILD)/program.hex
python3 hex2rom.py $< > $@
# Regenerate ROM from an arbitrary hex file: make rom HEX=foo.hex
rom:
python3 hex2rom.py $(HEX) > hdl/prog_rom.vhd
# -- Container targets ----------------------------------------------------------------------------
all: hdl/prog_rom.vhd
$(PODMAN) make -f Makefile.inner
sim: $(BUILD)/program.hex
$(PODMAN) make -f Makefile.inner sim
flash: $(BUILD)/pic_top.fs
openFPGALoader -b tangprimer25k $<
show-top:
$(PODMAN) make -f Makefile.inner $(BUILD)/pic_top.dot
xdot $(BUILD)/pic_top.dot
show-uart:
$(PODMAN) make -f Makefile.inner $(BUILD)/uart.dot
xdot $(BUILD)/uart.dot
# -- Clean ----------------------------------------------------------------------------
clean:
$(PODMAN) make -f Makefile.inner clean
rm -rf $(BUILD)
rm -f hdl/prog_rom.vhd
.PHONY: all sim clean flash show-top show-uart rom
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