S32K312 SPI transmit failure

[victory]

Hi everyone,

I am working on SPI with DMA.

when I use “Lpspi_Ip_AsyncTransmit” only 10 bytes are sent and the transmission&receive never work

[Robin_Shen]

Hi

Have you already referred to this example? Example S32K312 SPI Transmit & Receive Using DMA DS3.5 RTD300

Note that the buffer needs to be placed in the NON CACHEABLE memory section.

Best Regards,
Robin
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[victory]

I have referred to this example? Example S32K312 SPI Transmit & Receive Using DMA DS3.5 RTD300.

Waveform measurement, as shown in the diagram below.

CS and MOSI are kept at a high level in the diagram, while SCLK and MISO are kept at a low level.

[Robin_Shen]

Seems that you forget configure Dma Hardware Channel and Dma Mux Source in Rm component. 

Please refer to the settings of Example S32K312 SPI Transmit & Receive Using DMA DS3.5 RTD300. :