I am trying to run a BLDC motor with TIM1 on STM32F401RE. I want to use a software commutation event with HAL drivers as is done in the "6step" examples. So far the call back is not working. Please tell me what I am missing. Thanks.

Question

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */

HAL_Init();

/* USER CODE BEGIN Init */

//TimHandle.Instance = TIM1;

HAL_TIMEx_ConfigCommutEvent_IT(&htim1, TIM_TS_NONE, TIM_COMMUTATION_SOFTWARE);

/* USER CODE END Init */

/////////////////////////////////////////////////////////////////////////////////////////

/* USER CODE BEGIN 4 */

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim){

if(htim->Instance == (TIM2)){

HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_14);

HAL_TIM_GenerateEvent(&htim1, TIM_EventSource_COM);

//count++;

//BRG_switch(); //<-this call is working

}

//if(htim->Instance == (TIM1)){pwm++;}

}

void HAL_TIMEx_CommutCallback(TIM_HandleTypeDef *htim1){

count++;

BRG_switch(); //<-this call is not working!

}

BPetr.1 · Accepted Answer

YEP, sorry, I found the answer. The

HAL_TIMEx_ConfigCommutEvent_IT(&htim1, TIM_TS_NONE, TIM_COMMUTATION_SOFTWARE);

HAS TO BE AFTER MX_TIM1_Init();

/* Initialize all configured peripherals */

MX_GPIO_Init();

MX_TIM1_Init();

MX_ADC1_Init();

MX_TIM2_Init();

/* USER CODE BEGIN 2 */

//TimHandle.Instance = TIM1;

HAL_TIM_Base_Start_IT(&htim2);

HAL_TIM_Base_Start_IT(&htim1);

HAL_TIM_Base_MspInit(&TimHandle);

HAL_TIMEx_ConfigCommutEvent_IT(&htim1, TIM_TS_NONE, TIM_COMMUTATION_SOFTWARE);

// TIM1->DIER|=TIM_DIER_UIE;

//TIM1->DIER|=TIM_DIER_COMIE;

//__HAL_TIM_ENABLE_IT(&htim1, TIM_IT_COM);

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