avr单片机串口先进先出实例程序，这是个人在实际项目中应用的一个例子，还有是定时器的使用方法-Examples of single-chip FIFO serial avr procedures, which are individual projects in the actual application of an example are also the use of timer

AVR mega16/mega32的UART FIFO发送.超时接收,广泛应用于工业控制.这是原创作品.-AVR mega16/mega32 send the UART FIFO. Overtime receiver is widely used in industrial control. This is the original works.

Also the USART automatically senses the start of transmission of RX line and then inputs the whole byte and when it has the byte it informs you(CPU) to read that data from one of its registers. The USART of AVR is very versatile and can be setup

UART data transfer using interupts and FIFO