About the M7 and M4 core switching in STM32H747i-DISC0

[Pavankumar1_]

I am working with STM32H747i-DISCO discovery board, is it possible to switch between M7 and M4 core? like if I configure UART peripheral with M7 core and can I able to switch that peripheral to work with M4 core? 

[FBL]

Hello @Pavankumar1_ 

Using CubeMX, you can simply switch the peripheral context between cores.

[Pavankumar1_]

Thank for the replay @FBL 

By using CubeMX we can switch between the cores, But after code generation can we able to switch between cores dynamically as per the requirement.

[Tesla DeLorean]

The peripherals are accessible from both cores, you'd have to manage the transition of control between them.

[FBL]

Indeed, you can switch using HSEM semaphore. You can try the example from cube firmware to share resources for instance USART1 between cores STM32Cube\Repository\STM32Cube_FW_H7_V1.11.1\Projects\STM32H747I-DISCO\Applications\ResourcesManager\ResourcesManager_SharedResources

While debugging try to enable multiple core debug.