upp发送程序,发出来的数据都是零,寄存器按照手册step by step中的描述配置。查看dma地址及地址中的数据都对
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upp发送程序,发出来的数据都是零,寄存器按照手册step by step中的描述配置。查看dma地址及地址中的数据都对