ATmega238p to PC Serial Communication(RX/TX) using USART

A collection of sample codes for communicating with Linux/Windows PC from an ATmega328p microcontroller using USART in asynchronous mode.

Code

• Sourcecode written in Embedded C.
• Compiled using AVR-GCC using Make utility.
• Code can be uploaded using AVRDUDE and any compatible programmer.

Hardware setup

• Code tested on ATmega328p (32 pin TQFP).
• ATmega328p Clocked with a 11.0592MHz external crystal.
• USB to Serial Converter used to connect ATmega328p with PC
• PuTTY used to receive and Transmit data
• 

ATmega328p Clocking (Fuse Bits)

• External 11.0592MHz Crystal
• avrdude -c usbasp -p m328p -U lfuse:w:0xFF:m

Online Documentation

• Configuring the ATmega328p Microcontroller to use external crystal

• ATmega328p USART serial communication tutorial

• USB to Serial/RS485 Converter

• www.xanthium.in