基于stm32f103c8t6标准库的DHT11测温代码

好的，以下是基于STM32F103C8T6标准库的DHT11测温代码，供参考：

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

#define DHT11_PORT   GPIOC
#define DHT11_PIN    GPIO_Pin_3

void DHT11_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, 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_PORT, &GPIO_InitStructure);
    
    GPIO_SetBits(DHT11_PORT, DHT11_PIN);
    delay_ms(1000);
}

uint8_t DHT11_Read_Byte(void)
{
    uint8_t i, data = 0;
    
    for(i=0; i<8; i++)
    {
        while(!GPIO_ReadInputDataBit(DHT11_PORT, DHT11_PIN));
        delay_us(30);
        if(GPIO_ReadInputDataBit(DHT11_PORT, DHT11_PIN))
            data |= (1<<(7-i));
        while(GPIO_ReadInputDataBit(DHT11_PORT, DHT11_PIN));
    }
    
    return data;
}

uint8_t DHT11_Read_TempAndHumidity(float *Temp, float *Humidity)
{
    uint8_t i, j, check_sum;
    uint8_t DHT11Data[5];
    
    GPIO_ResetBits(DHT11_PORT, DHT11_PIN);
    delay_ms(18);
    GPIO_SetBits(DHT11_PORT, DHT11_PIN);
    delay_us(40);
    
    if(GPIO_ReadInputDataBit(DHT11_PORT, DHT11_PIN))
        return 1;
    delay_us(80);
    if(!GPIO_ReadInputDataBit(DHT11_PORT, DHT11_PIN))
        return 2;
    delay_us(80);
    
    for(i=0; i<5; i++)
        DHT11Data[i] = DHT11_Read_Byte();
    
    GPIO_SetBits(DHT11_PORT, DHT11_PIN);
    
    check_sum = DHT11Data[0] + DHT11Data[1] + DHT11Data[2] + DHT11Data[3];
    if(check_sum != DHT11Data[4])
        return 3;
    
    *Humidity = (float)DHT11Data[0] + (float)DHT11Data[1]/10.0;
    *Temp = (float)DHT11Data[2] + (float)DHT11Data[3]/10.0;
    
    return 0;
}

int main(void)
{
    float Temp, Humidity;
    
    DHT11_Init();
    
    while(1)
    {
        if(DHT11_Read_TempAndHumidity(&Temp, &Humidity) == 0)
        {
            printf("Temperature: %.1f C, Humidity: %.1f%%\n", Temp, Humidity);
        }
        delay_ms(2000);
    }
}

这个程序使用了STM32F103C8T6的标准库和一个DHT11传感器来测量温度和湿度。程序首先初始化GPIO口，然后读取DHT11传感器来获取温度和湿度值。最后，程序会将读取到的温度和湿度值通过串口打印出来，然后等待2秒钟再次读取。