50 lines
1.7 KiB
Makefile
50 lines
1.7 KiB
Makefile
# frequency of the CPU (in Hz)
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F_CPU = 16000000UL
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TARGET = main
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CC = avr-gcc
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all: hex flash
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hex: $(TARGET).hex
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# avr-gcc : compiler for AVR microcontrollers, https://gcc.gnu.org/wiki/avr-gcc#Using_avr-gcc, https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html
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# -mmcu : the target microcontrolle (ATmega328P)
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# -D : defines a preprocessor macro (#define F_CPU <value>)
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# -o : output filename
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$(TARGET).bin: $(TARGET).c
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$(CC) -mmcu=atmega328p -D F_CPU=$(F_CPU) $(TARGET).c -o $(TARGET).bin
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# avr-objcopy : man avr-jobcopy, https://linux.die.net/man/1/avr-objcopy
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# -O : specifies output format, Intel HEX
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# some formats (list not found in any doc) :
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# -O ihex : Used for flashing AVR chips
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# -O binary : Raw binary file
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# -O elf32-avr : Used for debugging
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$(TARGET).hex: $(TARGET).bin
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avr-objcopy -O ihex $(TARGET).bin $(TARGET).hex
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# avr-dude : AVR Downloader/UploaDEr, upload firmware, https://avrdudes.github.io/avrdude, v6.3 https://download-mirror.savannah.gnu.org/releases/avrdude/avrdude-doc-6.3.pdf
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# -p : specifies the microcontroller -> m328p
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# -c : programmer-id
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# -b : baud rate for serial communication
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# -P : the serial port, found with `ls /dev/tty*` -> /dev/ttyUSB0
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# -U : Uploads (w = write) the HEX firmware file to the flash memory
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# (-v : verbose info dump)
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flash:
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avrdude -p m328p -c arduino -b 115200 -P /dev/ttyUSB0 -U flash:w:$(TARGET).hex
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# avrdude -p m328p -c arduino -b 115200 -P /dev/ttyUSB0 -v
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# avrdude -p m328p -c arduino -b 115200 -P /dev/ttyUSB0 -U flash:w:../../ressources/dump_atmega328p_ori.hex
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dump:
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avrdude -p m328p -c arduino -b 115200 -P /dev/ttyUSB0 -U flash:r:dump_atmega328p.hex
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clean:
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rm -f main.hex main.bin
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.PHONY : all clean hex flash dump |