nucleo_c5a3zg sdhc sample from zephyr not working

[Abhishek_Babhulkar]

Greetings,

I am working with nucleo_c5a3zg board and I am using zephyr RTOS for my project. I wanted to interface the sd card and try to do some data logging. I had a adafruit data logger shield which can fit on nucleo_c5a3zg board and there is a shield support in zephyr. 

When i build and uploaded the code i am getting a error that CMD8 is not supported. During debugging i found out that there is no state change on MISO line. Just to check if my code is wrong i tried same code with nucleo_f446re board and it works fine.

Following is the capture from saleae loggic for necleo_c5a3zg board. I can provide other details like code, .dts file, etc.

If someone can help me solve this issue it would be much appreciated.

[Saket_Om]

Hello ​@Abhishek_Babhulkar 

Could you please try to set the SPI clock the same as for nucleo_f446re project. 

Did you try without Zephyr please?

[Abhishek_Babhulkar]

Hii ​@Saket_Om  
I tried with same clock as nucleo_f446re but I am getting same results.
As mentioned by you on my other post there is no sample from stm for sdmmc on c5 series. Also I don’t see the configuration in cubemx2 for sdmmc to create my own sample with filex without OS. That’s the reason i am using zephyr’s file handling stack along with other infra I don’t have the time or will to create my own file handling middleware over SPI drivers.

If you can suggest some solution which would avoid this I am happy to try.

[Saket_Om]

Hello ​@Abhishek_Babhulkar 

Also I don’t see the configuration in cubemx2 for sdmmc to create my own sample with filex without OS

The STM32C5 series does not support SDMMC peripheral.