STM32H747 Hardware Semaphore Interrupt

[savvn001]

EDIT: Nevermind this thread can be deleted, apologies. I didn't enable the HSEM2 Global interrupts under NVIC1/2 in CubeMX.

Hi,

I'm having issues getting the hardware semaphore interrupts to function correctly, or I'm misunderstanding their usage. I'm using a cubeMX generated project in SW4STM32. Below is a code snippet from the main.c file on the M4.

uint32_t sem_mask = __HAL_HSEM_SEMID_TO_MASK(8);
HAL_HSEM_ActivateNotification(sem_mask);
 
	/* USER CODE END 2 */
 
	/* Infinite loop */
	/* USER CODE BEGIN WHILE */
	while (1) {
		/* USER CODE END WHILE */
 
		/* USER CODE BEGIN 3 */
		HAL_HSEM_Take(8,8);
		HAL_Delay(1000);
		HAL_HSEM_Release(8, 8);
		HAL_Delay(1000);
 
	}

I've just picked a random semaphore, so number 8, out of 31.

From the comments in hal_hsem.c this is what I could gather about the usage. I've implemented the handler at the bottom of the same file:

void HAL_HSEM_FreeCallback(uint32_t SemMask){
	HAL_GPIO_TogglePin(GPIOI, GPIO_PIN_14);
}

My problem is the callback is never called, implying the interrupt is not firing.

[Amel NASRI]

Hello @savvn001​ ,

It is preferable to keep your initial post and add a reply where you provide your finding.

-Amel