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OMAPL138的UART0的配置问题,无法发送数据



      您好,我的OMAPL138的uart0串口在ARM下无法收发数据。但是经过DSP测试程序检测,可以正常工作,说明硬件没有问题。我根据DATASHEET中的PINMUX3进行了配置,而且内核启动信息显示中断也正常。但往UART0上写东西,管脚无波形输出,请问是什么原因?还需要其他配置吗