STM32G4备战蓝桥杯嵌入式---模块配置---DHL11（拓展板）

Posted 2022-12-01 旺旺^淞

文章目录

• DHL11
• • 1.引脚
  • 2.Cubemx实现的配置
  • 3.生成工程
  • • 1.DHT11读取函数
    • 2.DHT11读取测试
• 总结

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DHL11

1.引脚

PA7->接HDQ

2.Cubemx实现的配置

3.生成工程

1.DHT11读取函数

uint8_t DHT11_Read_Data(uint8_t *temp, uint8_t *humi)

    uint8_t buf[5];
    uint8_t i;
    DHT11_Rst();
    if(DHT11_Check() == 0)
    
        for(i = 0; i < 5; i++)
        
            buf[i] = DHT11_Read_Byte();
        
        if((buf[0] + buf[1] + buf[2] + buf[3]) == buf[4])
        
            *humi = buf[0];
            *temp = buf[2];
        
    
    else return 1;
    return 0;

2.DHT11读取测试

while(DHT11_Init())	//DHT11初始化
  
       LCD_DisplayStringLine(Line5, (uint8_t *)"DHT11 Error       ");
       HAL_Delay(200);
   
    LCD_DisplayStringLine(Line5, (uint8_t *)"DHT11 OK          ");
    HAL_Delay(1200);

		DHT11_Read_Data(&temperature_high, &humidity_high);		//读取温湿度值
		sprintf((char *)arr,  "Moisture:%2d%%",humidity_high);
		LCD_DisplayStringLine(Line6,arr);
		sprintf((char *)arr,  "Temperature:%2d",temperature_high);
		LCD_DisplayStringLine(Line8,arr);

总结