STM32H750 HAL_SPI driver function HAL_SPI_TransmitReceive(......) is called in my EXTI9_5_IRQHandler() interrupt function , It runs dead loop, and can't return.

[ZMinZ.1]

If the H7 HAL_SPI driver function HAL_SPI_TransmitReceive(......) is called in my main()

,It runs correctly, I can transmit and receive data correctly. But it is called in my EXTI9_5_IRQHandler() interrupt , It runs dead loop, and can't return.

[TDK]

Calling blocking functions in interrupts is not ideal, but you can do it as long as the systick handler priority is higher (numerically lower) than the interrupt you're currently in.