diff options
| -rw-r--r-- | dice/firmware/Makefile | 49 | ||||
| -rw-r--r-- | dice/firmware/main.c | 13 |
2 files changed, 62 insertions, 0 deletions
diff --git a/dice/firmware/Makefile b/dice/firmware/Makefile new file mode 100644 index 0000000..80cffce --- /dev/null +++ b/dice/firmware/Makefile @@ -0,0 +1,49 @@ +MAKEFLAGS += --no-builtin-rules --no-builtin-variables + +# This variable can be overwritten to show executed commands +Q ?= @ + +# TODO use CC instead of GCC but at the moment --no-builtin-variables seems to +# break somehow detection of not defined variable. +TARGET ?= avr- +GCC ?= $(TARGET)gcc +OBJCOPY ?= $(TARGET)objcopy +AVRDUDE ?= avrdude + +MCU ?= attiny85 +F_CPU ?= 16000000L +CFLAGS ?= -Os -mmcu=$(MCU) -DF_CPU=$(F_CPU) +LDFLAGS ?= -Os -mmcu=$(MCU) + +##################### +SRC := main.c +##################### +OBJ := $(patsubst %.c,%.o,$(SRC)) + +.PHONY: all +all: firmware.hex + +$(OBJ): %.o: %.c + @echo "CC $@" + $(Q)$(GCC) -c $(CFLAGS) $< -o $@ + +firmware.elf: $(OBJ) + @echo "LD $@" + $(Q)$(GCC) $(LDFLAGS) $< -o $@ + +firmware.hex: firmware.elf + @echo "OBJCOPY $@" + $(Q)$(OBJCOPY) -O ihex -R .eeprom $< $@ + + +.PHONY: install +install: firmware.hex + @echo "AVRDUDE $@" + $(Q)$(AVRDUDE) -p$(MCU) -cusbasp -D -Uflash:w:$<:a + +# TODO probably configure fuses + +.PHONY: clean +clean: + rm -f $(OBJ) + rm -f firmware.elf firmware.hex diff --git a/dice/firmware/main.c b/dice/firmware/main.c new file mode 100644 index 0000000..6b6f6f8 --- /dev/null +++ b/dice/firmware/main.c @@ -0,0 +1,13 @@ +#include <avr/io.h> +#include <util/delay.h> + +int main() { + DDRB |= _BV(DDB3); + + while (1) { + PORTB |= _BV(PORTB3); + _delay_ms(500); + PORTB &= ~_BV(PORTB3); + _delay_ms(500); + } +} |