stm32l476v TIM15 CH2 PWM not working from cubeMx

[Guillermo Loustau]

Posted on October 16, 2017 at 09:37

Hi, I'm trying to start a STM32L576VGT with FreeRTOS.

I have a led blinking from a task and now I'm trying to set a PWM on, freq and duty is not important now, is a 'hello world pwm'.

All is done using CubeMx, and I'm been unable to make it work.

/* TIM15 init function */

void MX_TIM15_Init(void){  TIM_MasterConfigTypeDef sMasterConfig;  TIM_OC_InitTypeDef sConfigOC;  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;

  htim15.Instance = TIM15;

  htim15.Init.Prescaler = 47999;  htim15.Init.CounterMode = TIM_COUNTERMODE_UP;  htim15.Init.Period = 200;  htim15.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;  htim15.Init.RepetitionCounter = 0;  htim15.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;  if (HAL_TIM_PWM_Init(&htim15) != HAL_OK)  {    _Error_Handler(__FILE__, __LINE__);  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;  if (HAL_TIMEx_MasterConfigSynchronization(&htim15, &sMasterConfig) != HAL_OK)  {    _Error_Handler(__FILE__, __LINE__);  }

  sConfigOC.OCMode = TIM_OCMODE_PWM1;

  sConfigOC.Pulse = 0;  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;  if (HAL_TIM_PWM_ConfigChannel(&htim15, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)  {    _Error_Handler(__FILE__, __LINE__);  }

  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;

  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;  sBreakDeadTimeConfig.DeadTime = 0;  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;  sBreakDeadTimeConfig.BreakFilter = 0;  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;  if (HAL_TIMEx_ConfigBreakDeadTime(&htim15, &sBreakDeadTimeConfig) != HAL_OK)  {    _Error_Handler(__FILE__, __LINE__);  }

  HAL_TIM_MspPostInit(&htim15);

}

void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)

{

  if(tim_pwmHandle->Instance==TIM15)

  {  /* USER CODE BEGIN TIM15_MspInit 0 */

  /* USER CODE END TIM15_MspInit 0 */

    /* TIM15 clock enable */    __HAL_RCC_TIM15_CLK_ENABLE();  /* USER CODE BEGIN TIM15_MspInit 1 */

  /* USER CODE END TIM15_MspInit 1 */

  }}void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle){

  GPIO_InitTypeDef GPIO_InitStruct;

  if(timHandle->Instance==TIM15)  {  /* USER CODE BEGIN TIM15_MspPostInit 0 */

  /* USER CODE END TIM15_MspPostInit 0 */

      /**TIM15 GPIO Configuration        PB15     ------> TIM15_CH2     */    GPIO_InitStruct.Pin = GPIO_PIN_15;    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;    GPIO_InitStruct.Pull = GPIO_PULLDOWN;    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;    GPIO_InitStruct.Alternate = GPIO_AF14_TIM15;    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM15_MspPostInit 1 */

  /* USER CODE END TIM15_MspPostInit 1 */

  }

}

int main(void)

{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 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 SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */

  MX_GPIO_Init();  MX_QUADSPI_Init();  MX_LPUART1_UART_Init();  MX_SPI2_Init();  MX_I2C1_Init();  MX_TIM15_Init();

  /* USER CODE BEGIN 2 */

//  DISP_diplay_init();

  HAL_TIM_PWM_Start(&htim15,TIM_CHANNEL_2);

  /* USER CODE END 2 */

  /* Call init function for freertos objects (in freertos.c) */

  MX_FREERTOS_Init();

  /* Start scheduler */

  osKernelStart();    /* We should never get here as control is now taken by the scheduler */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */  while (1)  {  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  }

  /* USER CODE END 3 */

}