https://github.com/xanthium-enterprises/linux-serialport-programming-using-c-termios-api

Learn to program the serial port of a Linux Computer like Ubuntu,Fedora,Arch using C language and termios API for communicating with a single board computer like Arduino (ATmega328P) or Raspberry Pi Pico.
https://github.com/xanthium-enterprises/linux-serialport-programming-using-c-termios-api

arduino-linux-serialport arduino-serial atmega328p c-language c-programming c-programming-language linux linux-serialport msp430g2553 raspberry-pi raspberry-pi-pico serial-communication serial-port-communication serialport termios termios-structure tty ttys0 ttyusb

Last synced: 5 months ago
JSON representation

Learn to program the serial port of a Linux Computer like Ubuntu,Fedora,Arch using C language and termios API for communicating with a single board computer like Arduino (ATmega328P) or Raspberry Pi Pico.

• Host: GitHub
• URL: https://github.com/xanthium-enterprises/linux-serialport-programming-using-c-termios-api
• Owner: xanthium-enterprises
• License: mit
• Created: 2025-06-15T12:26:55.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2025-06-17T13:14:19.000Z (8 months ago)
• Last Synced: 2025-07-27T06:09:10.807Z (6 months ago)
• Topics: arduino-linux-serialport, arduino-serial, atmega328p, c-language, c-programming, c-programming-language, linux, linux-serialport, msp430g2553, raspberry-pi, raspberry-pi-pico, serial-communication, serial-port-communication, serialport, termios, termios-structure, tty, ttys0, ttyusb
• Language: C
• Homepage: https://www.xanthium.in/native-serial-port-communication-arduino-micro-linux-unix-bsd-system-c-lang-terminos-api
• Size: 906 KB
• Stars: 2
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# Linux Serial Port Programming Tutorial using C Language and termios API

- In this repo ,You will find code for programming the serial port of your Linux distribution(Ubuntu,Fedora,Arch,Linux Mint) using C language.

- We will also Learn to perform Bi-Directional Serial Communication between a Linux PC and an Arduino UNO

- Here we will be using the native API's provided by the Linux System like the

  - **termios** structure.

  - **read()** system call

  - **write()** system call

-  to configure the serial port of our linux system.

-  Code is written in **Pure C** language and compiled using **GCC**.

 ![Screenshot of serial port programming in linux using C](docs/arduino-ubuntu-serial-communication.jpg)

## Online Tutorial

A detailed writeup of the Linux serial Port Programming tutorial can be found using the below link 

- [Linux Serial Port Programming tutorial for the Absolute Beginner](https://www.xanthium.in/native-serial-port-communication-arduino-micro-linux-unix-bsd-system-c-lang-terminos-api)

- 

![reading data from serialport using read() system call on linux](docs/arduino-linux-pc-serial-communication-c-language.jpg)

![writing data to serialport using write() system call on linux](docs/write-to-linux-serial-port-in-c.jpg)

  

## Hardware Connections

 ![hardware connections for serial communication between arduino uno board and arch linux laptop using C/C++](docs/linux-arduino-serial-port-communication-in-c.jpg)

 

 

 The above image shows how to connect the Arduino board with the Linux PC for Serial Communication.

 ![connecting microcontroller to linux serial port using c language](docs/linux-arduino-serialport-comm.jpg)

 

 The above image shows how to interface bare microcontrollers like 8051,ATmega328P,MSP430 with linux serial port using a [USB to Serial Converter](https://www.xanthium.in/USB-to-Serial-RS232-RS485-Converter).

## Compiling the Code.

The Code can be compiled using GCC on any modern Linux Systems.

`gcc serial_port_code.c -o serial_port_code`

Code tested on 

- `OS       :Fedora Linux 42 (Workstation Edition) x86_64`

- `Kernel   :Linux 6.14.9-300.fc42.x86_64`

- `Compiler :gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)`

- `OS       : Ubuntu 24.04.2 LTS x86_64`

- `Kernel   : 6.11.0-26-generic` 

- `Compiler :gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0`

## Screen shots

![reading data from linux serial port using C](docs/arduino-ubuntu-serial-communication.jpg)