stm32f407和hc-sr501生成代码

stm32f407是一款基于ARM Cortex-M4内核的微控制器，具有高性能、低功耗和丰富的外设接口等特点，广泛应用于嵌入式系统开发中。而HC-SR501是一款基于红外线技术的人体感应模块，可以检测人体的热辐射信号，从而实现对人体的检测和跟踪等功能。

如果你想使用STM32F407控制HC-SR501模块，可以使用STM32CubeMX软件进行初始化配置，生成相应的工程代码，在工程中添加HC-SR501控制代码，并通过串口或其他方式输出检测结果。具体的代码实现需要根据具体的需求和硬件连接情况进行编写。

相关问题

用HC-SR501检测人接近，控制L9110风扇模块启动，用DHT11检测环境温度，调整风扇转速，人离开后关闭风扇，STM32F103ZET6生成代码

以下是使用HC-SR501、L9110和DHT11进行人体接近检测和风扇调速的STM32F103ZET6代码：

#include "dht11.h"
#include "delay.h"
#include "stm32f10x.h"

#define FAN_CONTROL_PIN GPIO_Pin_8
#define FAN_CONTROL_PORT GPIOB

#define MOTION_DETECTION_PIN GPIO_Pin_0
#define MOTION_DETECTION_PORT GPIOB

uint16_t DHT11_Temperature = 0;
uint16_t DHT11_Humidity = 0;
uint16_t fan_speed = 0;

void init_GPIO(void);
void init_TIM1(void);
void init_USART1(void);
void delay_ms(uint16_t ms);

int main(void)
{
    init_GPIO();
    init_TIM1();
    init_USART1();
    DHT11_Init();

    while (1)
    {
        uint8_t motion_detected = GPIO_ReadInputDataBit(MOTION_DETECTION_PORT, MOTION_DETECTION_PIN);
        if (motion_detected)
        {
            fan_speed = 1000;
            TIM_SetCompare1(TIM1, fan_speed);
            delay_ms(1000);
            DHT11_Read_Data(&DHT11_Temperature, &DHT11_Humidity);

            if (DHT11_Temperature > 280)
            {
                fan_speed = 2000;
                TIM_SetCompare1(TIM1, fan_speed);
            }
            else if (DHT11_Temperature > 260)
            {
                fan_speed = 1500;
                TIM_SetCompare1(TIM1, fan_speed);
            }
            else if (DHT11_Temperature > 240)
            {
                fan_speed = 1000;
                TIM_SetCompare1(TIM1, fan_speed);
            }
            else
            {
                fan_speed = 0;
                TIM_SetCompare1(TIM1, fan_speed);
            }
        }
        else
        {
            fan_speed = 0;
            TIM_SetCompare1(TIM1, fan_speed);
        }
    }
}

void init_GPIO(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    GPIO_InitStructure.GPIO_Pin = FAN_CONTROL_PIN; 
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
    GPIO_Init(FAN_CONTROL_PORT, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = MOTION_DETECTION_PIN; 
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; 
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
    GPIO_Init(MOTION_DETECTION_PORT, &GPIO_InitStructure);
}

void init_TIM1(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_OCInitTypeDef TIM_OCInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

    TIM_TimeBaseStructure.TIM_Period = 40000 - 1; 
    TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1; 
    TIM_TimeBaseStructure.TIM_ClockDivision = 0; 
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; 
    TIM_OCInitStructure.TIM_Pulse = 0; 
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; 
    TIM_OC1Init(TIM1, &TIM_OCInitStructure);

    TIM_Cmd(TIM1, ENABLE);
}

void delay_ms(uint16_t ms)
{
    while (ms--)
    {
        delay_us(1000);
    }
}

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        uint8_t data = USART_ReceiveData(USART1);
        USART_SendData(USART1, data);
    }
}

需要注意的是，此代码中使用了DHT11库和延时库，需要自行下载并添加到项目中。此外，需要在STM32CubeMX中配置USART1串口和GPIOB的PB6和PB7引脚作为串口通信使用。

使用STM32F103ZET6和HC-SR04开发超声波测距

步骤如下：

1.连接硬件：将HC-SR04的VCC接到STM32F103ZET6的5V，GND接到GND，Trig接到STM32F103ZET6的PB10，Echo接到STM32F103ZET6的PB11。

2.配置STM32F103ZET6的GPIO：将PB10配置为输出模式，PB11配置为输入模式。

3.编写程序：使用定时器来生成10us的高电平，然后将Trig引脚拉高，等待10us后拉低。然后等待Echo引脚变高，开始计时，直到Echo引脚变低，停止计时。根据计时器的值计算距离并输出到串口。

下面是代码示例：

#include "stm32f10x.h"
#include "stdio.h"

#define TRIG_PIN GPIO_Pin_10
#define ECHO_PIN GPIO_Pin_11
#define TRIG_PORT GPIOB
#define ECHO_PORT GPIOB

void TIM3_init(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

    TIM_TimeBaseInitStruct.TIM_Prescaler = (SystemCoreClock/1000000) - 1; //1us per tick
    TIM_TimeBaseInitStruct.TIM_Period = 0xFFFF;
    TIM_TimeBaseInitStruct.TIM_ClockDivision = 0;
    TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;

    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);
    TIM_Cmd(TIM3, ENABLE);
}

void delay_us(uint32_t us)
{
    TIM_SetCounter(TIM3, 0);
    while(TIM_GetCounter(TIM3) < us);
}

float get_distance(void)
{
    uint32_t time_start, time_end;
    float distance;

    GPIO_ResetBits(TRIG_PORT, TRIG_PIN);
    delay_us(2);

    GPIO_SetBits(TRIG_PORT, TRIG_PIN);
    delay_us(10);
    GPIO_ResetBits(TRIG_PORT, TRIG_PIN);

    while(GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) == RESET);
    time_start = TIM_GetCounter(TIM3);
    while(GPIO_ReadInputDataBit(ECHO_PORT, ECHO_PIN) == SET);
    time_end = TIM_GetCounter(TIM3);

    if(time_end > time_start)
    {
        distance = (float)(time_end - time_start) * 0.017; //calculate distance in cm
    }
    else
    {
        distance = 0;
    }

    return distance;
}

int main(void)
{
    USART_InitTypeDef USART_InitStruct;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.GPIO_Pin = TRIG_PIN;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(TRIG_PORT, &GPIO_InitStruct);

    GPIO_InitStruct.GPIO_Pin = ECHO_PIN;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(ECHO_PORT, &GPIO_InitStruct);

    USART_InitStruct.USART_BaudRate = 115200;
    USART_InitStruct.USART_WordLength = USART_WordLength_8b;
    USART_InitStruct.USART_StopBits = USART_StopBits_1;
    USART_InitStruct.USART_Parity = USART_Parity_No;
    USART_InitStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStruct.USART_Mode = USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStruct);
    USART_Cmd(USART1, ENABLE);

    TIM3_init();

    while(1)
    {
        float distance = get_distance();
        printf("Distance: %.2f cm\n", distance);
        delay_us(500000);
    }
}