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STM32 HAL库 HAL_TIM_OC_Start函数解读

news 2025/8/12 11:41:41

STM32 HAL库 HAL_TIM_OC_Start函数解读

关键词: STM32; HAL; HAL_TIM_OC_Start

该函数位于文件stm32f4xx_hal_tim.c

HAL_TIM_OC_Start函数

/*** @brief  Starts the TIM Output Compare signal generation.        (开始TIM输出比较信号生成)* @param  htim TIM Output Compare handle* @param  Channel TIM Channel to be enabled*          This parameter can be one of the following values:*            @arg TIM_CHANNEL_1: TIM Channel 1 selected*            @arg TIM_CHANNEL_2: TIM Channel 2 selected*            @arg TIM_CHANNEL_3: TIM Channel 3 selected*            @arg TIM_CHANNEL_4: TIM Channel 4 selected* @retval HAL status*/
HAL_StatusTypeDef HAL_TIM_OC_Start(TIM_HandleTypeDef *htim, uint32_t Channel)
{uint32_t tmpsmcr;/* Check the parameters (检查传入的定时器实例和通道是否有效) */assert_param(IS_TIM_CCX_INSTANCE(htim->Instance, Channel));/* Check the TIM channel state (检查指定的通道是否处于就绪状态, 如果不是, 则返回错误状态) */if (TIM_CHANNEL_STATE_GET(htim, Channel) != HAL_TIM_CHANNEL_STATE_READY){return HAL_ERROR;}/* Set the TIM channel state (设置通道状态-将通道状态设置为忙碌, 表示通道正在使用中) */TIM_CHANNEL_STATE_SET(htim, Channel, HAL_TIM_CHANNEL_STATE_BUSY);/* Enable the Output compare channel (启用指定的输出比较通道) */TIM_CCxChannelCmd(htim->Instance, Channel, TIM_CCx_ENABLE);/* 主输出使能, 如果定时器实例支持刹车功能, 则启动主输出 MOE位 置1 */if (IS_TIM_BREAK_INSTANCE(htim->Instance) != RESET){/* Enable the main output (TIM1、TIM8主输出使能) */__HAL_TIM_MOE_ENABLE(htim);}/* Enable the Peripheral, except in trigger mode where enable is automatically done with trigger *//* 外设模式处理, 如果定时器处于从模式, 只有在从模式未启用触发时才需要手动启用定时器 */if (IS_TIM_SLAVE_INSTANCE(htim->Instance)){tmpsmcr = htim->Instance->SMCR & TIM_SMCR_SMS;if (!IS_TIM_SLAVEMODE_TRIGGER_ENABLED(tmpsmcr)){__HAL_TIM_ENABLE(htim);}}else{__HAL_TIM_ENABLE(htim);             /* 启动定时器 CNT开始计数 */}/* Return function status */return HAL_OK;
}

从下图中可以看到, HAL_TIM_OC_Start函数与HAL_TIM_PWM_Start函数一摸一样

STM32 HAL库 HAL_TIM_OC_Start函数解读

STM32 HAL库 HAL_TIM_OC_Start函数解读

HAL_TIM_OC_Start函数

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