The really problem was the Kernel module on the Pi. At the time of my post, nobody could answer and I switched to I2C, but there was a similar problem in the kernel module of the Pi. After some hot discussions on the kernel mailing lists, we found a workaround and included it in the kernel module. ...

hello have you solved the problem? My project is just like yours. STM32 communicate with Pi through SPI. I also add an extra pin to send request to Pi to trigger the Interrupt in PI and then start to send data. My code is as followed. As I test , the interrupt can be triggered, but wiringPiSPIDataRW...

the task is to make nucleo board L476 to commucate with raspberry pi 3 through SPI. Now the code on both sides are finished and build successful. But I don't know how to test if the data are sent successfully. Is there anybody who has experience with this and could teach me how to test.