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CC3200和TM4C123使用SPI三线模式通信,外加MRDY,SRDY通信速度相当的慢。

Other Parts Discussed in Thread: CC3200

①//MAP_SPIDataPutNonBlocking(GSPI_BASE, g_ucTxBuff[ucTxBuffNdx]);
②MAP_SPIDataPut(GSPI_BASE, g_ucTxBuff[ucTxBuffNdx]);

使用①无阻赛方式时,速度很快,但是接收数据端数据全部异常,八个字节数据全是发送端的第一个字节。

而使用②方式时,速度非常慢。CC3200发送八个字节耗时十秒左右,接受八个字节耗时二十秒以上。

请问一下这是什么原因,有什么办法解决?