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Arduino Bare Metal Blink Example

Very simple program to blink the built-in led of an arduino (UNO/Nano, not tested with other boards) without using any external libraries, only one C file main.c

Dependencies

• avr-gcc and avr-libc to compile the code
• avrdude for uploading the program to the microcontroller

Compile and upload to the board

Having the dependencies installed, compile the code running make or:

$ make compile

Then with the board connected to the computer, check the port with:

$ ls /dev/tty*

Often appears as /dev/ttyUSB* or /dev/ttyACM*, however it appears it should match the ARDUINO_PORT variable on Makefile. Finally upload the code to the arduino with

$ make upload