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这个的 demo 里面的 中断 函数 为啥 不能开启
http://www.freqchip.net:4567/topic/709/你好-请教fr8003a串口怎么收发数据/3 串口接收看参考这个
这个的 demo 里面的 中断 函数 为啥 不能开启 
