Manual CS control with Zephyr SPI driver

RE: Manual CS control with Zephyr SPI driver

LltWc — Fri, 28 Jun 2024 15:46:51 GMT

Fixed my issue - there was a problem with my layer over spi_transceive(); I didn't properly form the messages for NULL Rx/Tx arguments.

RE: Manual CS control with Zephyr SPI driver

LltWc — Thu, 27 Jun 2024 19:59:19 GMT

Thanks Priyanka, I'll try that method tomorrow as I'm getting an error with what I ended up doing before your response. I configured the SPI device with have SPI_HOLD_ON_CS so that CS would stay active until released. I #defined st25r3916comStart() to nothing and st25r3916comStop() to spi_release(), and it works for a few dozen cycles before I get the below error. Any ideas? I searched about this error and everyone else seemed to have multiple pins doing the same thing, but I don't have any GPIOs set to SPI pins and that's all I'm using.

RE: Manual CS control with Zephyr SPI driver

Priyanka — Thu, 27 Jun 2024 12:59:31 GMT

Hi,

Please make sure that your device tree does not define cs-gpios for the SPI peripheral if you want to control it manually. Configure the SPI without the CS line.

Please also take a look at this thread.

Regards,

Priyanka