Bug: HAL_DeInit() causes the STM32H7 microprocessor to reset.

[DOsbo]

Hi All,

Calling HAL_DeInit() causes the STM32H7 micro to reset when it executes __HAL_RCC_AHB3_FORCE_RESET();

#define __HAL_RCC_AHB3_FORCE_RESET()  (RCC->AHB3RSTR=0xFFFFFFFFU)
 
HAL_StatusTypeDef HAL_DeInit(void)
{
  /* Reset of all peripherals */
  __HAL_RCC_AHB3_FORCE_RESET();   // <-- Causes CPU reset
  __HAL_RCC_AHB3_RELEASE_RESET();
.
.
.
}

I assume it is because it is writing 1's to reserved bits. Replacing the macro with the following fixes the issue:

#define __HAL_RCC_AHB3_FORCE_RESET()  RCC->AHB3RSTR |=    (RCC_AHB3RSTR_MDMARST \
| RCC_AHB3RSTR_DMA2DRST \
| RCC_AHB3RSTR_JPGDECRST \
| RCC_AHB3RSTR_FMCRST \
| RCC_AHB3RSTR_QSPIRST \
| RCC_AHB3RSTR_SDMMC1RST)

I hope this gets fixed in the next HAL release. It caused me a lot of headaches 🙂

Cheers,

David

[Imen.D]

Hello @DOsbo​ ,

We raised this issue internally for check and we will come back to you soon with update.

Thanks for your contribution.

Best Regards,

Imen

[Imen.D]

Hello @DOsbo​ ,

Thanks for your proposal.

This issue will be fixed in the coming release.

Best Regards,

Imen

[lutztonineubert · Accepted solution]

Sorry. As i see, it is fixed.