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This document describes how to add an serial interface to an AVR.
Most of the AVR devices have a serial port, often called UART. But for interfacing with RS-232 devices, such as the COM port of a PC, a converter is necessary which converts the CMOS/TTL signals of the AVR to RS-232 compatible signals.
A standard 9-pol modem serial cable is used to connect with the COM port of the PC.
|1||+5V R232 Transceiver||Maxim MAX232||Datasheet (PDF)|
|1||Modem Serial cable (straight through) with DB9 Connectors||any|
My UART library the AVR-GCC provides an easy interface to the UART.
© Copyright 2002 Peter Fleury e-mail email@example.com home page: http://jump.to/fleury