QSPI is not working on STM32H747 in FreeRTOS thread

[lianyan]

Title edited by a ST moderator to reflect the content.

Hello,

STM32CubeMX Version:6.15.0

STM32CubeH7 Firmware Package V1.12.0 / 30-October-2024

This Is My QSPI Configure in STM32CubeMX

1、When I Start QSPI Work in main function,The QSPI Will always work。QSPI work on CM4-Core。

source:

The QSPI CS signal wave，which Delta Time is 13us，not big than 1s according code：

2、When I Start QSPI Work in FreeRTOS Thread，The QSPI-CS signal Always High，and clock is always out 。QSPI work on CM4-Core。

source：

The CS Signal is always High, And clock signal is always output.The next is qspi-clock signal:

My Question is:

1、When I Start QSPI transmit-receive in main() function, It will always work, no stop. It's CS-signal always output low and high. Why?

2、When I Start QSPI transmit-receive in FreeRTOS thread, It does not work, CS-signal is always High, and clock is always output.

I Have No Idea to solve it after many trial, Could You Have Some Idea?

[MOBEJ]

Hello @lianyan 

You can check the example for QSPI on the STM32H747I-EVAL board available on GitHub (STM32CubeH7/Projects/STM32H747I-EVAL/Examples/QSPI/QSPI_MemoryMappedDual at master · STMicroelectronics/STM32CubeH7 · GitHub ) . It’s a simple and well-structured example that can help you verify and validate your QSPI configuration effectively. Reviewing this example could give you a reference point for your implementation.

Br