initial stc rpn calculator project

Makefile

@@ -0,0 +1,30 @@
+SDCC ?= sdcc
+STCCODESIZE ?= 4089
+SDCCOPTS ?= --code-size $(STCCODESIZE) --xram-size 0 --data-loc 0x30 
+FLASHFILE ?= main.hex
+
+SRC = src/lcd.c src/utils.c
+
+OBJ=$(patsubst src%.c,build%.rel, $(SRC))
+
+all: main
+
+build/%.rel: src/%.c src/%.h
+	mkdir -p $(dir $@)
+	$(SDCC) $(SDCCOPTS) -o $@ -c $<
+
+main: $(OBJ)
+	$(SDCC) -o build/ src/$@.c $(SDCCOPTS) $(CFLAGS) $^
+	@ tail -n 5 build/main.mem | head -n 2
+	@ tail -n 1 build/main.mem
+	cp build/$@.ihx $@.hex
+	
+eeprom:
+	sed -ne '/:..1/ { s/1/0/2; p }' main.hex > eeprom.hex
+
+clean:
+	rm -f *.ihx *.hex *.bin
+	rm -rf build/*
+
+cpp: SDCCOPTS+=-E
+cpp: main