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AM3351: SPI MOSI MISO无数据,时钟片选正常

Part Number: AM3351


您好,我使用的内核版本是kernel4.4.221,配置的spi1.0通讯,驱动设备用的系统自带spidev,然后用的内核测试程序spidev_test进行回环收发测试(将rx tx连通),目前的现象是,当我发数据的时候时钟会触发,片选会触发,但是MOSI线 与 MISO线上 无任何数据,请您帮忙分析一下这个问题的可能原因