bare-duino

Bare metal project for Arduino UNO board

This project aims to understand how to create programs for the Arduino UNO board outside of the Arduino toolbox. It will primarily use the AVR GCC toolchain for compilation and the avrdude tool to upload the binaries on the board.

Setup

This "tutorial" is for Linux users but it also works for people who use the Windows Subsystem for Linux (or wsl)

• Download AVR gcc toolchain : AVR GCC for linux
• Install and configure the toolchain
  • Copy the archive in your /opt folder
  • Unzip it with tar :

foo@bar:~$ sudo cp Downloads/avr-gcc-8.5.0-1-x64-linux.tar.xz /opt/
foo@bar:~$ cd /opt
foo@bar:/opt$ sudo tar -xz avr-gcc-8.5.0-1-x64-linux.tar.xz

• Go into the folder and run the script permissions.sh with sudo rights

foo@bar:/opt$ cd /avr-gcc-8.5.0-1-x64-linux
foo@bar:/opt/avr-gcc-8.5.0-1-x64-linux$ sudo chmod +x permissions.sh
foo@bar:/opt/avr-gcc-8.5.0-1-x64-linux$ sudo ./permissions.sh

• That's it ! Your toolchain is ready !
• This toolchain may be able to compile your code but you cannot use this project to install the binary on WSL2. You can however use the Arduino IDE to upload your HEX file directly.

Compilation and installation

• Create the binary
  • Clone this repository into your workspace
  • Run make (parallel compilation not supported at the moment)

foo@bar:~/bare-duino$ git clone https://github.com/Contarkos/bare-duino.git
foo@bar:~/bare-duino$ make

• Upload the binary
  • Install the avrdude tool.
  • Find the COM port of your Arduino. It is usually found under /dev/ttyACM0.
  • Replace the name of the port in the makefile
  • Launch make install

About

We will try to implement basic features like a serial console or drivers for specific devices like a RF transmitter/receiver or bluetooth components.