ATmega 162双串行口的应用

串行通信用于MCU与MCU以及MCU与外设之间的数据传送；大多数MCU中只有一个全双工串行口，不能满足多MCU应用的需求，AVR高速嵌入式单片机ATmega162带有两个全双工串行口，双串口可同时进行通信，在ATmega162串行通信原理基础上，对双串口同时通信进行了研究，并开发了一个全双工双串行口的数据采集、转发系统，该系统应用ATmega162的两个独立工作的串口改变了传统主从式的通信模式，建立了对等的通信模式，实现了数据的同时发送和接收，提高了MCU的通信效率。

ATmega162's Application Based on Double Serial Communication Ports

Serial communication is used in the data transmission between MCU and MCU,MCU and peripheral hardware.Most MCUs have only one duplex USART,that can't meet the demands for multi-MCU application.A new Embedded MCU of high speed ATmega162 has two duplex USARTs.It can carry on communication at the same time.Based on the communication principle of ATmega162,a data acquisition and retransmission system was studied and developed by using these two duplex USARTs.This system changed the traditional correspondence pattern using two duplex USARTs,established the peer-to-peer correspondence pattern,realized the data transmitting and the receiving simultaneously,,enhanced the MCU correspondence efficiency.