STM32H725 reinit MPU.

[Aleks]

Hi.

Is it possible to reconfigure one or some regions MPU without fully disabling MPU?

I need configure for example ITCM memory for RW access when load code and set to RO mode after code copied completed.

Code copied from SDRAM to ITCM, so MPU needed for correct access to SDRAM.

Thank You.

[FBL · Accepted solution]

Hello @Aleks​,

First, It is possible to reconfigure one or some regions MPU without fully disabling MPU.

Second, for access permissions of regions, you may need to check Table 3. in AN4838.

Finally, you can get inspired with this example STM32Cube\Repository\STM32Cube_FW_H7_V1.11.0\Projects\STM32H743I-EVAL\Examples\FMC\FMC_SDRAM_DataMemory

Hope this helps!