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UCD3138如何实现串口功能

Other Parts Discussed in Thread: UCD3138

您好,我最近刚接触UCD3138这款芯片,我想测试一下串口功能,相关代码如图所示,用memory debug可以看到数据是被送到了串口寄存器中,但用串口工具调试却没有数据发出,不知道是要再设置gpio吗还是哪里设置有问题,希望您可以帮忙解答,谢谢