unable to interface spi with stm32u5g9j-dk2 board

[vaibhavivele]

I am working with the STM32U5G9J-DK2 discovery board and trying to interface an SPI peripheral

However, I am unable to get the SPI communication working.

I configured SPI in STM32CubeIDE but I’m not sure which SPI instance and pins are actually free to use. I suspect some pins are already connected internally to the LCD or Octo-SPI flash.

[Andrew Neil]

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@vaibhavivele wrote:

I’m not sure which SPI instance and pins are actually free to use.

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If you specify the board when you create the CubeMX project, it should identify which pins are used by on-board features.

Otherwise, check in the User Manual for the board, and the schematics.

The User Manual can be found on the 'Documentation' tab of the Product Page:

https://www.st.com/en/evaluation-tools/stm32u5g9j-dk2.html#documentation

and the schematics will be on the 'CAD Resources' tab:

https://www.st.com/en/evaluation-tools/stm32u5g9j-dk2.html#cad-resources

[Issamos]

Hello @vaibhavivele 

You can use the SPI1 interface on PA5 SPI1_SCK, PA6 SPI1_MISO, PB5 SPI1_MOSI and PB0 SPI1_NSS. They are all available on the CN4 Arduino connector of the boards (pins number 3 to 6).

Best Regards.

II