【AI桌面硬件大赏】桌面空气质量监测仪

#include "TFT_eSPI.h"
   TFT_eSPI TFT ； 
   #define LCD_BACKLIGHT (72Ul)
   bool tft_backlight = true ;   
   #include  
   #include "Seeed_FS.h"  
   #include "RawImage.h" 
   #include "Free_Fonts.h"        


   #include "SCD30.h" 
   int grove_scd30_co2 = 0 ;     
   int grove_scd30_temp = 0 ;    
   int grove_scd30_humi = 0 ;    
   int scd30_temp_offset = -4 ;   
   int scd30_humi_offset = 13 ;   
   
   
   void sensor_co2 () 
   {
     float result [ 3 ] = {0} ;   
  
     如果( scd30.isAvailable ( ) )  
     {
      scd30.getCarbonDioxideConcentration ( result ) ;
      grove_scd30_co2 = result [ 0 ];   
      grove_scd30_temp = result [ 1 ];  
      grove_scd30_humi = result [ 2 ];  
      // 串行打印所有传感器值
      Serial.print ( F ( " [ ?] GROVE SCD30 CO2 --> " )) ;
      Serial.print ( " SCD30 -CO2: " ) ; Serial.print ( grove_scd30_co2 ) ;  
      Serial.print ( " SCD30 -T: " ) ; Serial.print ( grove_scd30_temp + scd30_temp_offset ) ;   
      Serial.print ( " SCD30 -H: " ) ; Serial.println ( grove_scd30_humi + scd30_humi_offset ) ; 
      // 在TFT屏幕上显示二氧化碳图片
      const char* list[] = {"co2-low-rgb565.bmp", "co2-mid1-rgb565.bmp", "co2-mid2-rgb565.bmp", "co2-high1-rgb565.bmp", "co2-high2-rgb565.bmp"};
      // rgb traffic light (planned)
      int r,g,b;
      uint8_t cnt = 0;
      if (grove_scd30_co2=700)  { r=0;   g=127; b=0; cnt=1; }
      if (grove_scd30_co2>=1000) { r=127; g=127; b=0; cnt=2; }
      if (grove_scd30_co2>=1500) { r=127; g=0;   b=0; cnt=3; wio_buzzer();}
      if (grove_scd30_co2>=2000) { r=127; g=0;   b=0; cnt=4; wio_buzzer();} 
      drawImage(list[cnt],0,0); 
      tft.setTextColor(TFT_BLACK,TFT_WHITE);
      tft.setFreeFont(FMB18);
      tft.drawNumber(grove_scd30_co2,80,190);                 
     }
   }
  
  void wio_buzzer(){
    analogWrite(WIO_BUZZER, 128);
    delay(1000);
    analogWrite(WIO_BUZZER, 0);
    delay(1000);
    
    }

   // this timer is used to update tft display
   unsigned long previousMillis = 0;
   // send every 10 minutes
   // unsigned long interval = 600000;  
   // send every 3 minutes
   // unsigned long interval = 180000;
   // send every 30 seconds
   unsigned long interval = 30000;   
   unsigned long counter  = 0; 


void tft_display_status_bar(String room_name, long int room_bg) 
{
  tft.fillRect(0,0,320,50,room_bg);
  tft.setFreeFont(FMB18);
  tft.setTextColor(TFT_WHITE);
  tft.setCursor((320 - tft.textWidth(room_name)) / 2, 32);
  tft.print(room_name); 
}


void tft_display_room_screen(String room_name, long int room_bg) 
{
  tft.fillScreen(TFT_WHITE);
  tft.fillRect(0,0,320,50,room_bg);
  tft.setFreeFont(FMB18);
  tft.setTextColor(TFT_WHITE);
  tft.setCursor((320 - tft.textWidth(room_name)) / 2, 32);
  tft.print(room_name);
  // drawing verticle line
  tft.drawFastVLine(150,50,190,TFT_DARKGREEN);
  // drawing horizontal line
  tft.drawFastHLine(0,140,320,TFT_DARKGREEN);  
}


void tft_display_sensor_temperature(int temperature) 
{
  // setting the temperature
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB9);
  tft.drawString("Temperature",15,65);
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB18);
  tft.drawNumber(temperature,50,95);
  //tft.drawNumber(21,50,95);
  tft.setFreeFont(FMB12);
  tft.drawString("C",100,95);  
}

void tft_display_sensor_humidity(int humidity) 
{
  // setting the humidity
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB9);
  tft.drawString("Humidity",30,160);
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB18);
  tft.drawNumber(humidity,50,190);
  tft.setFreeFont(FMB12);
  tft.drawString("%",100,190);
}


void tft_display_sensor_co2(int co2) 
{ 
  // setting the CO2
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB9);
  tft.drawString("CO2",220,160);
  tft.setTextColor(TFT_BLACK);
  tft.setFreeFont(FMB18);
  tft.drawNumber(co2,160,190);
  tft.setFreeFont(FMB12);
  tft.drawString("ppm",250,190);
}


void setup() 
{
  Serial.begin(9600);
  delay(3000);
  Serial.println(F(" "));
  Serial.println(F(" "));
  Serial.println(F("Starting..."));
  Serial.println(F("WioTerminal CO2 Traffic Light Version 1.00"));
  Serial.println(F("GROVE SCD30 connected via I2C"));
  Serial.println(F(" "));

  pinMode(WIO_KEY_A, INPUT_PULLUP);
  pinMode(WIO_KEY_B, INPUT_PULLUP);
  pinMode(WIO_KEY_C, INPUT_PULLUP);
  pinMode(WIO_BUZZER, OUTPUT);


  Serial.println(F("[?] SD card initialize.."));
  if ( ! SD.begin ( SDCARD_SS_PIN , SDCARD_SPI ) )   
  {
    while ( 1 ); 
  }
  
  tft.begin ( ) ;
  tft.setRotation ( 3 ) ;
  Serial.println ( F ( "[?] GROVE SCD30 CO2传感器初始化." ) );
  Wire.begin ( ) ;
  scd30 .初始化();
  延迟（500 ）；
  sensor_co2 ();  
}

void loop ()  
{
  如果( digitalRead ( WIO_KEY_A ) == LOW )    
  {
    Serial.println ( " [ x} 按下了某个键" ) ;   
    延迟（200 ）；
    // 显示房间屏幕
    tft_display_room_screen ( "卧室" , TFT_BLUE ); 
    // 显示温度传感器
    tft_display_sensor_temperature ( grove_scd30_temp + scd30_temp_offset );
    // 显示湿度传感器
    tft_display_sensor_humidity ( grove_scd30_humi + scd30_humi_offset );  
    // 显示二氧化碳传感器
    tft_display_sensor_co2 ( grove_scd30_co2 );    
    
  }
  否则如果( digitalRead ( WIO_KEY_B ) == LOW )     
  {
    Serial.println ( "[x] B键被按下" ) ;     
    延迟（200 ）；
    //读取二氧化碳传感器数据*/
    sensor_co2 ();
  }
  否则如果( digitalRead ( WIO_KEY_C ) == LOW )     
  {
    Serial.println ( "[x] C键被按下" ) ;
    tft_backlight = ! tft_backlight ;  
     // 关闭液晶背光
    if ( tft_backlight == false ) { digitalWrite ( LCD_BACKLIGHT , LOW ); }        
     // 打开液晶背光
    if ( tft_backlight == true ) { digitalWrite ( LCD_BACKLIGHT , HIGH ); }        
    延迟（200 ）；
  }
  

  
  如果（毫秒（）-先前毫秒>间隔）     
  {
    // 正确的计时器
    previousMillis = millis ();  
    //读取二氧化碳传感器数据*/
    sensor_co2 ();
  }
  
}

结论

这个项目还有很多其他可能性。未来，我想利用Wio终端内置的WiFi模块将数据上传到云端，然后在电脑和移动终端上显示数据。数据预警更加智能，远程监控也将使智能家居更加便捷。