all: top.bin

# Use "make -n target" to see which commands will be executed

#target: dependencia1 dependencia2
#	proceso (para generar target en función de las dependencias)

sim: tb_vgadriver.ghw

# Analyze vhdl sources
# %, $@, $^, $< are explained in: https://web.mit.edu/gnu/doc/html/make_10.html#SEC94
# $< es la primera dependencia
# $@ es el target
# $^ es la lista de dependencias
%.o: %.vhd
	ghdl -a $<

# Generate simulation executable
tb_vgadriver: contador.o comparador.o dibuja.o vgadriver.o tb_vgadriver.o
	ghdl -e tb_vgadriver

# Generate simulation waveform
tb_vgadriver.ghw: tb_vgadriver
	./tb_vgadriver --wave=tb_vgadriver.ghw

# Open gtkwave
view: tb_vgadriver.ghw
	gtkwave tb_vgadriver.ghw

# Synthesize
top.json: top.vhd contador.vhd comparador.vhd dibuja.vhd vgadriver.vhd
	yosys -m ghdl -p 'ghdl contador.vhd comparador.vhd dibuja.vhd vgadriver.vhd top.vhd -e top; synth_ice40 -json top.json'

# Place and route
top.asc: top.json top.pcf
	nextpnr-ice40 --up5k --package sg48 --freq 50 --pcf top.pcf --json top.json --asc top.asc

# Bitstream generation
top.bin: top.asc
	icepack top.asc top.bin

# An example of how we can make a rule generic:
#
#%.bin: %.asc
#	icepack $< $@

# Configure the FPGA
prog: top.bin
	iceprog top.bin

# Clean:
clean:
	rm -f *.json *.asc *.bin
	rm -f *.o work-obj??.cf
	rm -f tb_vgadriver tb_vgadriver.ghw

.PHONY: all prog clean