topic Re: Problems using RT500 SPI slave peripheral in i.MX RT Crossover MCUs

Problems using RT500 SPI slave peripheral

djgj — Fri, 23 Aug 2024 14:18:59 GMT

We are using RT555 for our latest product development and we have hit a problem.

We are trying to use SPI peripheral in RT555 as a slave SPI device but we are unable to make it work.

We tried to work with MCUxpresso sample application and it seems to not work.

We have 2 RT595 EVK boards (no modifications) connected (JP26 - HS_SPI_1 pins) as described in these examples.

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/main/evkmimxrt595/driver_examples/spi/dma_b2b_transfer/master

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/main/evkmimxrt595/driver_examples/spi/dma_b2b_transfer/slave

attached here the result of dma_b2b_transfer_master, dma_b2b_transfer_slave

The results are similar for other three variants of the SPI examples in mcuxpresso.

Anyone has been able to run this examples on EVK boards without problems? am i missing something?

Thanks for the support.

Regards,

djgj

Re: Problems using RT500 SPI slave peripheral

pavel_krenek — Thu, 29 Aug 2024 12:39:26 GMT

Hello,

could you share also revision of the board on the back side of the EVB?

Best regards,

Pavel Krenek

Re: Problems using RT500 SPI slave peripheral

djgj — Thu, 29 Aug 2024 12:43:50 GMT

Hello Pavel,
Please find the board revision details in this pic.

Thank you,

djgj

Re: Problems using RT500 SPI slave peripheral

pavel_krenek — Wed, 04 Sep 2024 07:31:57 GMT

Hello,

I was checking the all the examples, and it looks on my evb revision it is working correctly. I was testing in IAR and also in MCUXpresso. First started slave and after that start master spi example.

SPI connection on your evb pictures looks OK and what about powering of the EVB? Are you same usb as for programming?

Best regards,

Pavel

Re: Problems using RT500 SPI slave peripheral

djgj — Wed, 04 Sep 2024 07:51:16 GMT

Hello,
Yes i am using J40 USB for programming and checking logs. Is my board revision same as yours?

Regards,
djgj

Re: Problems using RT500 SPI slave peripheral

pavel_krenek — Wed, 04 Sep 2024 11:16:54 GMT

J40 is OK - regarding the revision - you have higher than me so I expect that should be good, but I am going to get the same revision as you have to be absolutely sure.

Could you share some screenshot of the communication from the scope and logic analyzer?

Regards,

Pavel Krenek