SPI4 Issue -> clock signal is generated but MOSI doesn't output any data

SAdde.18 · ‎2021-07-20

We are using the STM32H725IGT6 MCU. We are using 4 SPIs -> SPI1, SPI3, SPI4 and SPI6. We are able to communicate with the SPI slave on the SPI1, SPI3 and not able to with SPI4 and SPI6. We are able to see the SPI4 clock on the SCK pin, but there is no data sent out on the MOSI pin. The same behavior is observed with SPI6.

The configuration for all the SPI channells is same

waclawek.jan · ‎2021-07-20

Read out and check/post content of SPI and related GPIO registers.

JW

TDK · ‎2021-07-20

What board? Check that the pins are connected and initialized to what you think. Check that the AF selection is correct.

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