计一个数的时间#xff1a;1us#xff0c;PSC71#xff0c;ARR65535

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定时器HAL驱动层文件添加ic驱动文件添加GPIO常用函数定时器输入捕获实验配置步骤main.c程序

#include

*/stm32_clock_init(RCC_PLL_MUL9);

设置时钟,

*/uart1_init(115200);printf(hello

1);//计时1uswhile(1){

led1_on();led2_off();delay_ms(500);led1_off();led2_on();delay_ms(500);}

**ic_init(65536

TIM_COUNTERMODE_UP;HAL_TIM_IC_Init(ic_handle);ic_config.ICPolarity

TIM_ICPOLARITY_FALLING;ic_config.ICSelection

TIM_ICSELECTION_DIRECTTI;ic_config.ICPrescaler

TIM_ICPSC_DIV1;ic_config.ICFilter

0;HAL_TIM_IC_ConfigChannel(ic_handle,

ic_config,

TIM_CHANNEL_2);__HAL_TIM_ENABLE_IT(ic_handle,

TIM_IT_UPDATE);HAL_TIM_IC_Start_IT(ic_handle,

TIM_CHANNEL_2);

HAL_TIM_IC_MspInit(TIM_HandleTypeDef

*htim)

gpio_initstruct;//打开时钟__HAL_RCC_GPIOA_CLK_ENABLE();

使能GPIOA时钟__HAL_RCC_TIM2_CLK_ENABLE();//调用GPIO初始化函数gpio_initstruct.Pin

GPIO_PIN_0;

gpio_initstruct);HAL_NVIC_SetPriority(TIM2_IRQn,

2);HAL_NVIC_EnableIRQ(TIM2_IRQn);}

}void

{HAL_TIM_IRQHandler(ic_handle);

}void

HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef

*htim)