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你好：
CC2530 启动之后，串口正常使用，软件重启之后，串口接收数据一直为0.
断电重启之后，CC2530的串口收发没有问题，经过外部复位或者看门狗复位之后，串口发送没有问题，读取的个数是正确的，但是读取的数据全为00，
