void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { if(htim == &Tim3Handle) { s_Timer3Trigger_1ms = true; s_Timer3Count++; if(s_Timer3Count>9) { s_Timer3Count=0; s_bTimer3Trigger = true; } } }逐行注释
时间: 2024-02-14 20:22:45 浏览: 36
// 当定时器时间到达时会自动调用此函数
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
// 判断是哪一个定时器触发了中断
if(htim == &Tim3Handle) {
// 将标志位置为true,表示定时器3触发了1ms中断
s_Timer3Trigger_1ms = true;
// 定时器3计数器加1
s_Timer3Count++;
// 如果计数器大于9,表示已经计满10ms
if(s_Timer3Count>9) {
// 计数器清零
s_Timer3Count=0;
// 将标志位置为true,表示定时器3触发了10ms中断
s_bTimer3Trigger = true;
}
}
}
相关问题
__HAL_TIM_ENABLE_IT()
__HAL_TIM_ENABLE_IT() is a macro in the HAL (Hardware Abstraction Layer) library for STM32 microcontrollers. It is used to enable interrupts for a specific timer (TIM) in the microcontroller.
Syntax:
__HAL_TIM_ENABLE_IT(TIM_HandleTypeDef *htim, uint32_t interrupt)
Parameters:
- htim: Pointer to the TIM handle structure that contains the configuration information for the specified TIM.
- interrupt: Specifies the interrupt source to be enabled. This parameter can be one of the following values:
- TIM_IT_UPDATE: Enables the TIM update interrupt.
- TIM_IT_CC1: Enables the TIM capture/compare 1 interrupt.
- TIM_IT_CC2: Enables the TIM capture/compare 2 interrupt.
- TIM_IT_CC3: Enables the TIM capture/compare 3 interrupt.
- TIM_IT_CC4: Enables the TIM capture/compare 4 interrupt.
- TIM_IT_COM: Enables the TIM commutation interrupt.
- TIM_IT_TRIGGER: Enables the TIM trigger interrupt.
- TIM_IT_BREAK: Enables the TIM break interrupt.
Return value:
None
Example:
__HAL_TIM_ENABLE_IT(&htim1, TIM_IT_UPDATE); // Enables the TIM update interrupt for TIM1.
HAL_TIM_PWM_ConfigChannel(\\&htim2, \\&sConfigOC, TIM_CHANNEL_2)和HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2);有什么区别
TIM_HandleTypeDef *htim,
TIM_OC_InitTypeDef *sConfigOC,
uint32_t Channel)
This function is used to configure the PWM channel of a timer peripheral. It takes three parameters:
1. TIM_HandleTypeDef *htim: A pointer to a TIM_HandleTypeDef structure that contains the configuration information for the timer peripheral.
2. TIM_OC_InitTypeDef *sConfigOC: A pointer to a TIM_OC_InitTypeDef structure that contains the configuration information for the PWM channel.
3. uint32_t Channel: The PWM channel to be configured.
The function sets up the timer peripheral to generate PWM signals on the specified channel, using the configuration information provided in the TIM_OC_InitTypeDef structure. The function returns void.