AVR274: Single-wire Software UART Documentation

Atmel AVR Application Notes

Introduction

This documents the software for application note AVR274. This is a single-wire software UART.

Compilation Info

This software was compiled with IAR Embedded Workbench, 4.20A. For other compiliers than IAR modifications are needed.

To make project on IAR EWAVR:

Device Info

All devices with a timer compare interrupt and an external interrupt can be used. The example is written for ATmega32. The single_wire_UART.h needs to be changed according to the device and baud rate settings.

Code Size

single_wire_UART.c 500 bytes (454 bytes if UART_counter and SW_UART_Status are locked in dedicated register)
main.c 218 bytes

Contact Info

For more info about Atmel AVR visit http://www.atmel.com/products/AVR/
For application notes visit http://www.atmel.com/dyn/products/app_notes.asp?family_id=607
Support mail: avr@atmel.com
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