[嵌入式]STM32 CUBE中TIMER比较输出

TIMER3的的Channel1输出，

在TIM3的HAL_TIM_PeriodElapsedCallback中断中GPIO7翻转，在TIM3的HAL_TIM_OC_DelayElapsedCallback 中选取TIM3的一般周期翻转GPIO8

或者可以通过sConfigOC.OCMode = TIM_OCMODE_TOGGLE直接翻转TIM3的比较输出映射GPIO6

void MX_TIM3_Init(void)
{
? TIM_ClockConfigTypeDef sClockSourceConfig = {0};
? TIM_MasterConfigTypeDef sMasterConfig = {0};
? TIM_OC_InitTypeDef sConfigOC = {0};

? htim3.Instance = TIM3;
? htim3.Init.Prescaler = 100;
? htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
? htim3.Init.Period = 10000;
? htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV2;
? htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
? if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
? {
? ? Error_Handler();
? }
? sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
? if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
? {
? ? Error_Handler();
? }
? if (HAL_TIM_OC_Init(&htim3) != HAL_OK)
? {
? ? Error_Handler();
? }
? sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
? sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
? if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
? {
? ? Error_Handler();
? }
?? ?// 此处如果使用TIM_OCMODE_TOGGLE且初始化HAL_TIM_MspPostInit(&htim3);则会在time_channel1的GPIO翻转电平，但是如果配置为TIM_OCMODE_TIMING则time_channel的GPIO不会有电平变化
? sConfigOC.OCMode = TIM_OCMODE_TOGGLE;//TIM_OCMODE_TIMING;?
? sConfigOC.Pulse = 5000;
? sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;
? sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
? if (HAL_TIM_OC_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
? {
? ? Error_Handler();
? }
? HAL_TIM_MspPostInit(&htim3);
? HAL_TIM_Base_Start_IT(&htim3);
? HAL_TIM_OC_Start_IT(&htim3, TIM_CHANNEL_1);

}

void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{

? GPIO_InitTypeDef GPIO_InitStruct = {0};
? if(timHandle->Instance==TIM3)
? {
? /* USER CODE BEGIN TIM3_MspPostInit 0 */

? /* USER CODE END TIM3_MspPostInit 0 */

? ? __HAL_RCC_GPIOC_CLK_ENABLE();
? ? /**TIM3 GPIO Configuration
? ? PC6 ? ? ------> TIM3_CH1
? ? */
? ? GPIO_InitStruct.Pin = GPIO_PIN_6;
? ? GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
? ? GPIO_InitStruct.Pull = GPIO_NOPULL;
? ? GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
? ? GPIO_InitStruct.Alternate = GPIO_AF2_TIM3;
? ? HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

? /* USER CODE BEGIN TIM3_MspPostInit 1 */

? /* USER CODE END TIM3_MspPostInit 1 */
? }

}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
?? ?if(htim->Instance == TIM1)
?? ?{
?? ??? ?time1_cnt++;
?? ?}
?? ?else if(htim->Instance == TIM2)
?? ?{
?? ??? ?time2_cnt++;
?? ?}
?? ?else if(htim->Instance == TIM3)
?? ?{
?? ??? ?time3_cnt++;
?? ??? ?TestPinToggle();
?? ?}

}

此中断就是比较输出的中断
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
?? ?if(htim->Instance == TIM3)
?? ?{
?? ??? ?Test8PinToggle();

?? ?}
}