请写出使用红外传感器测量直流电机转速的stm32程序

下面是使用STM32和红外传感器测量直流电机转速的程序，假设使用的是反射式光电传感器：

#include "stm32f10x.h"

#define IR_SENSOR_PIN GPIO_Pin_0
#define IR_SENSOR_PORT GPIOA
#define IR_SENSOR_RCC RCC_APB2Periph_GPIOA
#define TIMER_RCC RCC_APB1Periph_TIM2
#define TIMER TIM2

volatile uint16_t captured_value;
volatile uint8_t capture_flag;

void GPIO_Configuration(void);
void TIMER_Configuration(void);
void NVIC_Configuration(void);

int main(void)
{
    GPIO_Configuration();
    TIMER_Configuration();
    NVIC_Configuration();
    TIM_Cmd(TIMER, ENABLE);

    while (1)
    {
        if (capture_flag == 1)
        {
            // 计算时间差
            uint32_t time_diff = captured_value * 2;
            // 计算转速，假设使用的是10个齿轮的电机
            float speed = 600000.0 / time_diff;
            // 处理转速数据
            // ...
            capture_flag = 0;
        }
    }
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(IR_SENSOR_RCC, ENABLE);

    GPIO_InitStructure.GPIO_Pin = IR_SENSOR_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; // 输入上拉模式
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(IR_SENSOR_PORT, &GPIO_InitStructure);
}

void TIMER_Configuration(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_ICInitTypeDef TIM_ICInitStructure;

    RCC_APB1PeriphClockCmd(TIMER_RCC, ENABLE);

    TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIMER, &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(TIMER, &TIM_ICInitStructure);

    TIM_Cmd(TIMER, ENABLE);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    TIM_ITConfig(TIMER, TIM_IT_CC1, ENABLE);
}

void TIM2_IRQHandler(void)
{
    if (TIM_GetITStatus(TIMER, TIM_IT_CC1) == SET)
    {
        captured_value = TIM_GetCapture1(TIMER);
        capture_flag = 1;
        TIM_ClearFlag(TIMER, TIM_FLAG_CC1);
    }
}

需要注意的是，程序中的计算转速和处理转速数据的部分需要根据具体的实际情况进行调整和优化。另外，反射式光电传感器的使用还需要根据具体的传感器型号和使用环境进行调整和优化。