DHT11仿真（proteus8.15）代码，纯享版（好移植）

紫昭

发布于 2025-11-29 08:11:38

120

仿真软件：proteus8.15(特地强调一下，因为这个仿真软件感觉有点版本Bug)

仿真效果如下

https://live.csdn.net/v/embed/433469

DHT11驱动代码

DHT11.h

#ifndef __DHT11_H
#define __DHT11_H

//修改下面三个参数来进行引脚的修改（更加方便进行移植）
#define DHT11_PIN              GPIO_Pin_7
#define DHT11_RCC              RCC_APB2Periph_GPIOB
#define DHT11_GPIO_PORT        GPIOB

#define DHT11_LOGIC_HIGH       1
#define DHT11_LOGIC_LOW        0

#define DHT11_DATA_OUTPUT(a)  if (a) \
                                GPIO_SetBits(DHT11_GPIO_PORT, DHT11_PIN);\
                                else \
                                GPIO_ResetBits(DHT11_GPIO_PORT, DHT11_PIN)

#define DHT11_DATA_INPUT()     GPIO_ReadInputDataBit(DHT11_GPIO_PORT, DHT11_PIN)

typedef struct
{
    uint8_t humidity_integer;    //湿度的整数部分
    uint8_t humidity_decimal;    //湿度的小数部分
    uint8_t temperature_integer; //温度的整数部分
    uint8_t temperature_decimal; //温度的小数部分
    uint8_t checksum;            
} DHT11_Sensor_Data_TypeDef;

void DHT11_Sensor_GPIO_Configuration(void);
static void DHT11_Sensor_SetInputPullUpMode(void);
static void DHT11_Sensor_SetOutputPushPullMode(void);
uint8_t DHT11_ReadSensorData(DHT11_Sensor_Data_TypeDef *sensorData);
static uint8_t DHT11_ReadDataByte(void);

#endif

DHT11.c

#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "DHT11.h"

void DHT11_Sensor_GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(DHT11_RCC, ENABLE); 
    GPIO_InitStructure.GPIO_Pin = DHT11_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure);

    GPIO_SetBits(DHT11_GPIO_PORT, DHT11_PIN);
}

static void DHT11_Sensor_SetInputPullUpMode(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = DHT11_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure);
}

static void DHT11_Sensor_SetOutputPushPullMode(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    GPIO_InitStructure.GPIO_Pin = DHT11_PIN;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure);
}

static uint8_t DHT11_ReadDataByte(void)
{
    uint8_t i, temp = 0;

    for (i = 0; i < 8; i++)
    {
        while (DHT11_DATA_INPUT() == Bit_RESET);

        Delay_us(40);

        if (DHT11_DATA_INPUT() == Bit_SET)
        {
            while (DHT11_DATA_INPUT() == Bit_SET);

            temp |= (uint8_t)(0x01 << (7 - i));
        }
        else
        {
            temp &= (uint8_t) ~(0x01 << (7 - i));
        }
    }
    return temp;
}

uint8_t DHT11_ReadSensorData(DHT11_Sensor_Data_TypeDef *sensorData)
{
    DHT11_Sensor_SetOutputPushPullMode();
    DHT11_DATA_OUTPUT(DHT11_LOGIC_LOW);
    Delay_ms(18);

    DHT11_DATA_OUTPUT(DHT11_LOGIC_HIGH);

    Delay_us(30);

    DHT11_Sensor_SetInputPullUpMode();

    if (DHT11_DATA_INPUT() == Bit_RESET)
    {
        while (DHT11_DATA_INPUT() == Bit_RESET);

        while (DHT11_DATA_INPUT() == Bit_SET);

        sensorData->humidity_integer = DHT11_ReadDataByte();
        sensorData->humidity_decimal = DHT11_ReadDataByte();
        sensorData->temperature_integer = DHT11_ReadDataByte();
        sensorData->temperature_decimal = DHT11_ReadDataByte();
        sensorData->checksum = DHT11_ReadDataByte();

        DHT11_Sensor_SetOutputPushPullMode();
        DHT11_DATA_OUTPUT(DHT11_LOGIC_HIGH);

        if (sensorData->checksum == sensorData->humidity_integer + sensorData->humidity_decimal + sensorData->temperature_integer + sensorData->temperature_decimal)
            return SUCCESS;
        else
            return ERROR;
    }
    else
    {
        return ERROR;
    }
}

main.c

给出main.c函数进行运行的参考，单独移植DHT11代码的话，就只用参考与其相关的代码即可

#include "stm32f10x.h"
#include  "OLED.h"  //OLED显示屏 
#include "PWM.h"    //PWM输出
#include "motor.h"  //直流电机
#include "Delay.h"
#include "DHT11.h"
#include "stdio.h"
			  
char dis1[16];	
DHT11_Sensor_Data_TypeDef DHT11_Data;

int8_t Speed = 0;

int main(void)
{ 
	uint8_t tem1;
	uint8_t hum1;
	OLED_Init();
	Motor_Init();
	DHT11_Sensor_GPIO_Configuration();
	
	OLED_ShowString(1, 1, "Speed:");
	OLED_ShowString(2, 1, "temp:");
	OLED_ShowString(3, 1, "humidity:");
	while(1){ 
		Motor_SetSpeed(Speed);
		OLED_ShowSignedNum(1, 7, Speed, 3);
		if(DHT11_ReadSensorData(&DHT11_Data) == SUCCESS)
		{
			OLED_ShowNum(2, 10, DHT11_Data.humidity_integer, 2);
			OLED_ShowString(2, 12, ".");
			OLED_ShowNum(2, 13, DHT11_Data.humidity_decimal, 2);
			
			OLED_ShowNum(3, 10, DHT11_Data.temperature_integer, 2);
			OLED_ShowString(3, 12, ".");
			OLED_ShowNum(3, 13, DHT11_Data.temperature_decimal, 1);
			
		}
		
		if((DHT11_Data.temperature_integer>30)&&(DHT11_Data.temperature_integer<35))
		{
			Speed=25;
		}else if((DHT11_Data.temperature_integer>=35)&&(DHT11_Data.temperature_integer<40))
		{
			Speed=50;
		}
		else if((DHT11_Data.temperature_integer>40)&&(DHT11_Data.temperature_integer<50))
		{
			Speed=100;
		}else if(DHT11_Data.temperature_integer<=30)
		{
			Speed=0;
		}
		 }
}

后续将对传感器专栏进行更新，致力于打造优质的传感器移植专栏，使传感器驱动更为便捷。

觉得不错的话，希望能够一键三连，多多关注!!!

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原始发表：2024-11-13，如有侵权请联系 cloudcommunity@tencent.com 删除

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