Interfacing ATmega328P with PC using RS485 Protocol

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Online Tutorial

• RS485 communication from ATmega328p microcontroller to PC Tutorial

Introduction

Tutorial on interfacing your Windows 10 PC with an ATmega328P microcontroller using RS485 Protocol for Bidirectional Communication.

• In the first case,

  • ATmega328P will send a text string "Hello from ATmega328P" to PC where a C# application will read and display it on the console Window.

• In the second case,

  • PC will send ASCII charcters to the ATmega328P microcontroller through the RS485 link and the LED's connected to the Microcontroller will light up depending upon the command

Toolchain /IDE

• The Code for ATmega328P is written in AVR C using ATMEL Studio 7.
• C# code is written using Microsoft Visual Studio Community Edition 2019.

Tools used

• ATmega328P Microcontroller
• MAX485 RS485 chip
• USB to RS485 Converter
•