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AM3354: gpmc_ben1用作gpio1_28输出

Part Number: AM3354


  ,uart4在发送数据时,目标机接收不到数据,同时我们检测gpio1_28处的电压为0(理论应该是3.3V),gpmc_ben1引脚是否被其它地方占用了(该引脚我自己只配置为gpio)。

请大家帮帮忙,谢谢各位!