L052 普通的定时器如何打开

1万 · 2021-5-5 18:07

刚接触STM32L0系列的芯片，现在的SDK都是通过st的工具cube mx生成的，但定时器没有跑进设定的中断去。

1万 · 2021-5-5 18:10

看看代码哪里出了问题

1万 · 2021-5-5 18:12

void SysBaseTimerInit(void)
{
      /* USER CODE BEGIN TIM21_Init 0 */

      /* USER CODE END TIM21_Init 0 */

      TIM_SlaveConfigTypeDef sSlaveConfig = {0};
      TIM_MasterConfigTypeDef sMasterConfig = {0};
      TIM_OC_InitTypeDef sConfigOC = {0};

      /* USER CODE BEGIN TIM21_Init 1 */

      /* USER CODE END TIM21_Init 1 */
      htim21.Instance = TIM21;
      htim21.Init.Prescaler = 1600;
      htim21.Init.CounterMode = TIM_COUNTERMODE_UP;
      htim21.Init.Period = 10000;
      htim21.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
      htim21.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
      if (HAL_TIM_Base_Init(&htim21) != HAL_OK)
      {
            _Error_Handler(__FILE__, __LINE__);
      }
      if (HAL_TIM_OC_Init(&htim21) != HAL_OK)
      {
            _Error_Handler(__FILE__, __LINE__);
      }
      sSlaveConfig.SlaveMode = TIM_SLAVEMODE_RESET;
      sSlaveConfig.InputTrigger = TIM_TS_ITR0;
      if (HAL_TIM_SlaveConfigSynchronization(&htim21, &sSlaveConfig) != HAL_OK)
      {
            _Error_Handler(__FILE__, __LINE__);
      }
      sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
      sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
      if (HAL_TIMEx_MasterConfigSynchronization(&htim21, &sMasterConfig) != HAL_OK)
      {
            _Error_Handler(__FILE__, __LINE__);
      }
      sConfigOC.OCMode = TIM_OCMODE_TIMING;
      sConfigOC.Pulse = 0;
      sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
      sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
      if (HAL_TIM_OC_ConfigChannel(&htim21, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
      {
            _Error_Handler(__FILE__, __LINE__);
      }
}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef * htim)
{
      //if(htim->Instance == TimHandle.Instance)
      {
            if(a == 1)
            {
                     LED1_WRITE(0);
                     a = 0;
            }
            else
            {
                     a = 1;
                     LED1_WRITE(1);
            }
      }
}

void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
{
      if(htim_base->Instance==TIM21)
      {
            /* USER CODE BEGIN TIM21_MspInit 0 */

            /* USER CODE END TIM21_MspInit 0 */
            /* Peripheral clock enable */
            __HAL_RCC_TIM21_CLK_ENABLE();
            /* TIM21 interrupt Init */
            HAL_NVIC_SetPriority(TIM21_IRQn, 0, 2);
            HAL_NVIC_EnableIRQ(TIM21_IRQn);
            /* USER CODE BEGIN TIM21_MspInit 1 */

            /* USER CODE END TIM21_MspInit 1 */
      }
}