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28377D的通讯问题!!



大家好,我在调试28377D的通讯例子,就controlsuit 文件夹中sci_loopback例子,我只是在例子中把GPIO48和GPIO49设置了传输方向,但是现在我用RS232和电脑连起来的时候,串口调试没有反应,我还需要设置什么呢,这一块不懂啊,求大神指教啊!!