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AM263P4: MCSPI toggle CS between words

Yuting Huang
Prodigy 75 points
Part Number: AM263P4

Tool/software:

I am using AM263P4 launchpad. My SPI peripheral requires a CS line toggle in between each 16bit word.

Currently, I am using DMA blocking mode and setting up 1 word transactions so that the CS line is toggled between each transaction.

Is there a more efficient way of doing this? Ideally, I would like to have 1 transaction with multiple 16 bit words, and CS toggled in between each word automatically.

Thanks for the help!

  • 0
    Intellectual 340 points

    Hi Huang,

    Please refer mcspi_loopback_dma/interrupt examples. In any of these examples please configure dataSize to 16. And observe the CS line on Logic Analyzer, CS toggled in between each word automatically.

    For more details, please find the attached image.