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stm32h745 M4 Core doesn't work properly

HKapo.1
Associate II

Hello All,

I have a STM32H745-DISCO board and trying to run a very simple program where M7 toggles Green LED and M4 toggles RED Led.

After programming, I can see that Green LED is toggling fine but RED LED is not.

Below is my simple main code:

M7:

int main(void)
{
  /* USER CODE BEGIN 1 */
 
  /* USER CODE END 1 */
/* USER CODE BEGIN Boot_Mode_Sequence_0 */
  int32_t timeout;
/* USER CODE END Boot_Mode_Sequence_0 */
 
  /* Enable I-Cache---------------------------------------------------------*/
  SCB_EnableICache();
 
  /* Enable D-Cache---------------------------------------------------------*/
  SCB_EnableDCache();
 
/* USER CODE BEGIN Boot_Mode_Sequence_1 */
  /* Wait until CPU2 boots and enters in stop mode or timeout*/
  timeout = 0xFFFF;
  while((__HAL_RCC_GET_FLAG(RCC_FLAG_D2CKRDY) != RESET) && (timeout-- > 0));
  if ( timeout < 0 )
  {
  Error_Handler();
  }
/* USER CODE END Boot_Mode_Sequence_1 */
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
/* USER CODE BEGIN Boot_Mode_Sequence_2 */
/* When system initialization is finished, Cortex-M7 will release Cortex-M4 by means of
HSEM notification */
/*HW semaphore Clock enable*/
 
__HAL_RCC_HSEM_CLK_ENABLE();
/*Take HSEM */
HAL_HSEM_FastTake(HSEM_ID_0);
/*Release HSEM in order to notify the CPU2(CM4)*/
HAL_HSEM_Release(HSEM_ID_0,0);
/* wait until CPU2 wakes up from stop mode */
timeout = 0xFFFF;
while((__HAL_RCC_GET_FLAG(RCC_FLAG_D2CKRDY) == RESET) && (timeout-- > 0));
if ( timeout < 0 )
{
Error_Handler();
}
 
/* USER CODE END Boot_Mode_Sequence_2 */
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  /* USER CODE BEGIN 2 */
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
		HAL_GPIO_TogglePin(LED_GREEN_GPIO_Port,LED_GREEN_Pin);
		HAL_Delay(500);
		
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

M4 Main:

int main(void)
{
  /* USER CODE BEGIN 1 */
 
  /* USER CODE END 1 */
 
/* USER CODE BEGIN Boot_Mode_Sequence_1 */
  /*HW semaphore Clock enable*/
 
  __HAL_RCC_HSEM_CLK_ENABLE();
  /* Activate HSEM notification for Cortex-M4*/
  HAL_HSEM_ActivateNotification(__HAL_HSEM_SEMID_TO_MASK(HSEM_ID_0));
  /*
  Domain D2 goes to STOP mode (Cortex-M4 in deep-sleep) waiting for Cortex-M7 to
  perform system initialization (system clock config, external memory configuration.. )
  */
 
  HAL_PWREx_ClearPendingEvent();
  HAL_PWREx_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFE, PWR_D2_DOMAIN);
  /* Clear HSEM flag */
  __HAL_HSEM_CLEAR_FLAG(__HAL_HSEM_SEMID_TO_MASK(HSEM_ID_0));
/* USER CODE END Boot_Mode_Sequence_1 */
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  /* USER CODE BEGIN 2 */
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
		HAL_GPIO_WritePin(LED_RED_GPIO_Port,LED_RED_Pin,GPIO_PIN_SET);
		//HAL_Delay(500);
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
 

Can someone please help.

1 REPLY 1
HKapo.1
Associate II

Hello community members,

I am stuck with this issue for quite some time.

Can you please help me with this?