65 lines
2.1 KiB
Makefile
65 lines
2.1 KiB
Makefile
# frequency of the CPU (in Hz)
|
|
F_CPU = 16000000UL
|
|
TARGET = main
|
|
CC = avr-gcc
|
|
INCLUDES = -I.
|
|
|
|
AVRGCC_MCU_TYPE = atmega328p
|
|
AVRDUDE_MCU_TYPE = m328p
|
|
BAUD_RATE = 115200
|
|
PROGRAMMER_ID = arduino
|
|
|
|
# original firmware dump
|
|
DUMP_ORI = ../../ressources/dump_atmega328p_ori.hex
|
|
|
|
# Detect OS
|
|
OS := $(shell uname -s)
|
|
|
|
# Set Serial Port based on OS
|
|
ifeq ($(OS), Darwin) # macOS
|
|
SERIAL_PORT := $(shell ls /dev/tty.usb* 2>/dev/null | head -n 1) # should be : /dev/tty.usbserial-310
|
|
else ifeq ($(OS), Linux) # Ubuntu/Linux
|
|
SERIAL_PORT = $(shell ls /dev/ttyUSB* 2>/dev/null | head -n 1) # should be : /dev/ttyUSB0
|
|
endif
|
|
|
|
##
|
|
## RULES
|
|
##
|
|
|
|
all: hex flash
|
|
|
|
hex: $(TARGET).hex
|
|
|
|
# avr-gcc : compiler for AVR microcontrollers, https://gcc.gnu.org/wiki/avr-gcc#Using_avr-gcc, https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html
|
|
# -mmcu : the target microcontrolle (ATmega328P)
|
|
# -D : defines a preprocessor macro (#define F_CPU <value>)
|
|
# -o : output filename
|
|
$(TARGET).bin: $(TARGET).c
|
|
$(CC) -mmcu=$(AVRGCC_MCU_TYPE) -D F_CPU=$(F_CPU) $(INCLUDES) $(TARGET).c -Os -o $(TARGET).bin
|
|
|
|
# avr-objcopy : man avr-jobcopy, https://linux.die.net/man/1/avr-objcopy
|
|
# -O : specifies output format, Intel HEX
|
|
# some formats (list not found in any doc) :
|
|
# -O ihex : Used for flashing AVR chips
|
|
# -O binary : Raw binary file
|
|
# -O elf32-avr : Used for debugging
|
|
$(TARGET).hex: $(TARGET).bin
|
|
avr-objcopy -O ihex $(TARGET).bin $(TARGET).hex
|
|
|
|
# avr-dude : AVR Downloader/UploaDEr, upload firmware, https://avrdudes.github.io/avrdude, v6.3 https://download-mirror.savannah.gnu.org/releases/avrdude/avrdude-doc-6.3.pdf
|
|
# -p : specifies the microcontroller -> m328p
|
|
# -c : programmer-id
|
|
# -b : baud rate for serial communication
|
|
# -P : the serial port, found with `ls /dev/tty*` -> /dev/ttyUSB0
|
|
# -U : Uploads (w = write) the HEX firmware file to the flash memory
|
|
# (-v : verbose info dump)
|
|
flash:
|
|
avrdude -p $(AVRDUDE_MCU_TYPE) -c $(PROGRAMMER_ID) -b $(BAUD_RATE) -P $(SERIAL_PORT) -U flash:w:$(TARGET).hex
|
|
|
|
restore:
|
|
avrdude -p $(AVRDUDE_MCU_TYPE) -c $(PROGRAMMER_ID) -b $(BAUD_RATE) -P $(SERIAL_PORT) -U flash:w:$(DUMP_ORI)
|
|
|
|
clean:
|
|
rm -f main.hex main.bin
|
|
|
|
.PHONY : all clean hex flash restore |