写一段stm32程序检测5路脉冲

下面是一段使用STM32的定时器捕获功能检测5路脉冲的程序，其中使用了TIM2和TIM3定时器进行捕获，可以检测到5路脉冲的频率、占空比等参数：

#include "stm32f10x.h"
#include "stm32f10x_tim.h"

#define TIM2_CH1_PIN GPIO_Pin_0
#define TIM2_CH1_PORT GPIOA
#define TIM2_CH1_CLK RCC_APB2Periph_GPIOA

#define TIM2_CH2_PIN GPIO_Pin_1
#define TIM2_CH2_PORT GPIOA
#define TIM2_CH2_CLK RCC_APB2Periph_GPIOA

#define TIM3_CH1_PIN GPIO_Pin_6
#define TIM3_CH1_PORT GPIOA
#define TIM3_CH1_CLK RCC_APB2Periph_GPIOA

#define TIM3_CH2_PIN GPIO_Pin_7
#define TIM3_CH2_PORT GPIOA
#define TIM3_CH2_CLK RCC_APB2Periph_GPIOA

#define TIM3_CH3_PIN GPIO_Pin_0
#define TIM3_CH3_PORT GPIOB
#define TIM3_CH3_CLK RCC_APB2Periph_GPIOB

uint32_t TIM2_CH1_Ticks = 0;
uint32_t TIM2_CH2_Ticks = 0;
uint32_t TIM3_CH1_Ticks = 0;
uint32_t TIM3_CH2_Ticks = 0;
uint32_t TIM3_CH3_Ticks = 0;

void TIM2_CH1_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | TIM2_CH1_CLK, ENABLE);

    GPIO_InitStructure.GPIO_Pin = TIM2_CH1_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(TIM2_CH1_PORT, &GPIO_InitStructure);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

    TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
    TIM_ICInit(TIM2, &TIM_ICInitStructure);

    TIM_ITConfig(TIM2, TIM_IT_CC1, ENABLE);

    TIM_Cmd(TIM2, ENABLE);
}

void TIM2_CH2_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | TIM2_CH2_CLK, ENABLE);

    GPIO_InitStructure.GPIO_Pin = TIM2_CH2_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(TIM2_CH2_PORT, &GPIO_InitStructure);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

    TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
    TIM_ICInit(TIM2, &TIM_ICInitStructure);

    TIM_ITConfig(TIM2, TIM_IT_CC2, ENABLE);

    TIM_Cmd(TIM2, ENABLE);
}

void TIM3_CH1_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = TIM3_CH1_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(TIM3_CH1_PORT, &GPIO_InitStructure);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
    TIM_ICInit(TIM3, &TIM_ICInitStructure);

    TIM_ITConfig(TIM3, TIM_IT_CC1, ENABLE);

    TIM_Cmd(TIM3, ENABLE);
}

void TIM3_CH2_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = TIM3_CH2_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(TIM3_CH2_PORT, &GPIO_InitStructure);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
    TIM_ICInit(TIM3, &TIM_ICInitStructure);

    TIM_ITConfig(TIM3, TIM_IT_CC2, ENABLE);

    TIM_Cmd(TIM3, ENABLE);
}

void TIM3_CH3_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOB | RCC_APB2Periph_TIM1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = TIM3_CH3_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(TIM3_CH3_PORT, &GPIO_InitStructure);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
    TIM_ICInit(TIM3, &TIM_ICInitStructure);

    TIM_ITConfig(TIM3, TIM_IT_CC3, ENABLE);

    TIM_Cmd(TIM3, ENABLE);
}

void TIM2_IRQHandler(void) {
    if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET) {
        TIM_ClearITPendingBit(TIM2, TIM_IT_CC1);
        TIM2_CH1_Ticks = TIM_GetCapture1(TIM2);
        TIM_SetCounter(TIM2, 0);
    }
    if (TIM_GetITStatus(TIM2, TIM_IT_CC2) != RESET) {
        TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
        TIM2_CH2_Ticks = TIM_GetCapture2(TIM2);
        TIM_SetCounter(TIM2, 0);
    }
}

void TIM3_IRQHandler(void) {
    if (TIM_GetITStatus(TIM3, TIM_IT_CC1) != RESET) {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC1);
        TIM3_CH1_Ticks = TIM_GetCapture1(TIM3);
        TIM_SetCounter(TIM3, 0);
    }
    if (TIM_GetITStatus(TIM3, TIM_IT_CC2) != RESET) {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);
        TIM3_CH2_Ticks = TIM_GetCapture2(TIM3);
        TIM_SetCounter(TIM3, 0);
    }
    if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET) {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);
        TIM3_CH3_Ticks = TIM_GetCapture3(TIM3);
        TIM_SetCounter(TIM3, 0);
    }
}

int main(void) {
    TIM2_CH1_Configuration();
    TIM2_CH2_Configuration();
    TIM3_CH1_Configuration();
    TIM3_CH2_Configuration();
    TIM3_CH3_Configuration();

    while (1) {
        printf("TIM2 CH1: %d\r\n", TIM2_CH1_Ticks);
        printf("TIM2 CH2: %d\r\n", TIM2_CH2_Ticks);
        printf("TIM3 CH1: %d\r\n", TIM3_CH1_Ticks);
        printf("TIM3 CH2: %d\r\n", TIM3_CH2_Ticks);
        printf("TIM3 CH3: %d\r\n", TIM3_CH3_Ticks);
        delay_ms(1000);
    }
}

在这个程序中，我们使用了5个GPIO引脚连接到定时器的输入捕获通道上，通过定时器的输入捕获功能来检测脉冲的频率、占空比等参数。在定时器的中断服务函数中，我们读取捕获到的脉冲计数值，并清除定时器的计数器，以便下一次捕获。最后，我们在主函数中输出捕获到的脉冲计数值，以供我们进行调试和分析。需要注意的是，在使用定时器的输入捕获功能时，需要对定时器进行相应的配置，以便正确捕获脉冲信号。