AVR®: Using the USART to Loopback From a Serial Terminal

 In this video:

  • Block diagram overview of the AVR® USART (Universal Synchronous and Asynchronous serial Receiver and Transmitter).
  • USART initialization: eight data bits, one stop bit, 9600 baud
  • USART receive function: Wait for data to be received, then store in data register.
  • USART transmit function: Wait for empty transmit buffer, then put data in the buffer.
  • Implement a simple loopback and test in Atmel Studio's terminal window.

Next Video:

Understanding the USART Baud Rate Macro

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