repos/arduino-bare-metal-blink

Arduino blink example without IDE or additional libraries
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README.md (32 lines)

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

   1 # Arduino Bare Metal Blink Example
   2 
   3 Very simple program to blink the built-in led of an arduino (UNO/Nano, not
   4 tested with other boards) without using any external libraries, only one C file
   5 `main.c`
   6 
   7 ## Dependencies
   8 
   9 * `avr-gcc` and `avr-libc` to compile the code
  10 * `avrdude` for uploading the program to the microcontroller
  11 
  12 ## Compile and upload to the board
  13 
  14 Having the dependencies installed, compile the code running `make` or:
  15 
  16 ```console
  17 $ make compile
  18 ```
  19 
  20 Then with the board connected to the computer, check the port with:
  21 
  22 ```console
  23 $ ls /dev/tty*
  24 ```
  25 
  26 Often appears as `/dev/ttyUSB*` or `/dev/ttyACM*`, however it appears it should
  27 match the `ARDUINO_PORT` variable on `Makefile`. Finally upload the code to the
  28 arduino with
  29 
  30 ```console
  31 $ make upload
  32 ```