Use USART function (rs232) in ATMEL new AVR chips (ATXMEGA64) Written in AVR-gcc (WinAVR)

AVR BOOTLOADER • Support many types of AVR microcontrollers. • Support AVR device with multi-uart. • Support rs232/RS485/RS422 mode. -Support AES crypt routine (128/256 bits key) • Support customize communication baud

rs232串口通信代码，一个封装好的串口通信代码，同时支持window及linux系统，接口清晰，使用便利。-Here you can find code to use the serial port. It has been tested with gcc on Linux and Mingw-w64 on Windows. Handshaking or flowcontrol is not supported. It uses polling to receive charact