Air_Quality_Sensor.ino

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>
#include "PMS.h"


#define TFT_SCLK       4
#define TFT_SID        5
#define TFT_RST        6 // Or set to -1 and connect to Arduino RESET pin
#define TFT_DC         7
#define TFT_CS         8


Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_SID, TFT_SCLK, TFT_RST);

PMS pms(Serial);
PMS::DATA data;

#define BLACK    0x0000
#define WHITE    0xFFFF
/*#define BLUE     0x001F
#define RED      0xF800
#define GREEN    0x07E0
#define CYAN     0x07FF
#define MAGENTA  0xF81F
#define YELLOW   0xFFE0 */
#define PM1COLOR    0xFB3F
#define PM25COLOR   0x059E
#define PM10COLOR   0x0398

#define GREEN  0x0700
#define YELLOW 0x07FF
#define ORANGE 0x03FF
#define RED    0x001F
#define PURPLE 0x4812
#define MAROON 0x200F


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);

  // Use this initializer if using a 1.8" TFT screen:
  tft.initR(INITR_GREENTAB);

  tft.setRotation(1);

  tft.fillScreen(BLACK);

  tft.setTextSize(3);
  tft.setTextColor(WHITE);
  tft.print("Made by\n\nJoran\nMulderij");
  
  delay(5000);
  
  tft.setCursor(0, 0);
  tft.setTextColor(BLACK);
  tft.print("Made by\n\nJoran\nMulderij");
  


  //tft.fillRect(5, 5, 118, 150, GREEN);

  
  //drawBase1();
  //drawBase25();
  //drawBase10();
  
}

int graphIndex = 0;
int lastColor10 = 0;
int lastColor25 = 0;
int lastColor1 = 0;

void loop() {
  if (pms.read(data))
  {
    /*Serial1.print("PM 1.0 (ug/m3): ");
    Serial1.println(data.PM_AE_UG_1_0);

    Serial1.print("PM 2.5 (ug/m3): ");
    Serial1.println(data.PM_AE_UG_2_5);

    Serial1.print("PM 10.0 (ug/m3): ");
    Serial1.println(data.PM_AE_UG_10_0);

    Serial1.println();*/
    int pm1a = pm25ToAQI(data.PM_AE_UG_1_0);
    int pm25a = pm25ToAQI(data.PM_AE_UG_2_5);
    int pm10a = pm10ToAQI(data.PM_AE_UG_10_0);

    if(lastColor10 != AQIToColor(pm10a)){
      lastColor10 = AQIToColor(pm10a);
      drawBase10();
    }
    if(lastColor25 != AQIToColor(pm25a)){
      lastColor25 = AQIToColor(pm25a);
      drawBase25();
    }
    if(lastColor1 != AQIToColor(pm1a)){
      lastColor1 = AQIToColor(pm1a);
      drawBase1();
    }

    tft.setTextSize(2);
    tft.setCursor(10, 20);
    tft.setTextColor(BLACK, lastColor1);
    tft.print(pm1a);
    if(pm1a < 100) tft.print(" ");
    if(pm1a < 10) tft.print(" ");
    tft.setCursor(60, 20);
    tft.setTextColor(BLACK, lastColor25);
    tft.print(pm25a);
    if(pm25a < 100) tft.print(" ");
    if(pm25a < 10) tft.print(" ");
    tft.setCursor(110, 20);
    tft.setTextColor(BLACK, lastColor10);
    tft.print(pm10a);
    if(pm10a < 100) tft.print(" ");
    if(pm10a < 10) tft.print(" ");

    tft.setTextSize(1);
    tft.setCursor(10, 40);
    tft.setTextColor(BLACK, lastColor1);
    int pm1 = data.PM_AE_UG_1_0;
    tft.print(pm1);
    if(pm1 < 100) tft.print(" ");
    if(pm1 < 10) tft.print(" ");
    tft.setCursor(60, 40);
    tft.setTextColor(BLACK, lastColor25);
    int pm25 = data.PM_AE_UG_2_5;
    tft.print(pm25);
    if(pm25 < 100) tft.print(" ");
    if(pm25 < 10) tft.print(" ");
    tft.setCursor(110, 40);
    tft.setTextColor(BLACK, lastColor10);
    int pm10 = data.PM_AE_UG_10_0;
    tft.print(pm10);
    if(pm10 < 100) tft.print(" ");
    if(pm10 < 10) tft.print(" ");
    

    tft.fillRect(graphIndex, 68, 5, 60, BLACK);
    if(data.PM_AE_UG_10_0 > 300){
      tft.drawLine(graphIndex, 127, graphIndex, 68, PM10COLOR);
    } else {
      tft.drawLine(graphIndex, 127, graphIndex, 127 - (data.PM_AE_UG_10_0 / 5), PM10COLOR);
    }
    if(data.PM_AE_UG_2_5 > 300){
      tft.drawLine(graphIndex, 127, graphIndex, 68, PM25COLOR);
    } else {
      tft.drawLine(graphIndex, 127, graphIndex, 127 - (data.PM_AE_UG_2_5 / 5), PM25COLOR);
    }
    if(data.PM_AE_UG_1_0 > 300 ){
      tft.drawLine(graphIndex, 127, graphIndex, 68, PM1COLOR);
    } else {
      tft.drawLine(graphIndex, 127, graphIndex, 127 - (data.PM_AE_UG_1_0 / 5), PM1COLOR);
    }
    graphIndex++;

    
    
    while(Serial.available()){
      Serial.read();
    }
    if(graphIndex >= 160){
      graphIndex = 0;
    }
  }
}

void drawBase10(){
  tft.fillRect(105, 0, 50, 50, lastColor10);

  tft.setTextColor(BLACK);
  tft.setTextSize(1);
  tft.setCursor(110, 5);
  tft.print("PM 10");
}

void drawBase25(){
  tft.fillRect(55, 0, 50, 50, lastColor25);

  tft.setTextColor(BLACK);
  tft.setTextSize(1);
  tft.setCursor(60, 5);
  tft.print("PM 2.5");
}

void drawBase1(){
  tft.fillRect(5, 0, 50, 50, lastColor1);

  tft.setTextColor(BLACK);
  tft.setTextSize(1);
  tft.setCursor(10, 5);
  tft.print("PM 1");
}

int AQIToColor(int aqi){
  if(aqi <= 50){
    return GREEN;
  } else if(aqi <= 100){
    return YELLOW;
  } else if(aqi <= 150){
    return ORANGE;
  } else if(aqi <= 200){
    return RED;
  } else if(aqi <= 300){
    return PURPLE;
  } else if(aqi <= 500){
    return MAROON;
  } else {
    return WHITE;
  }
}

int pm25ToAQI(int pm){
  float Chigh, Clow, Ihigh, Ilow;
  if(pm <= 12) Clow = 0, Chigh = 12, Ilow = 0, Ihigh = 50;
  else if(pm <= 35) Clow = 13, Chigh = 35, Ilow = 51, Ihigh = 100;
  else if(pm <= 55) Clow = 36, Chigh = 55, Ilow = 101, Ihigh = 150;
  else if(pm <= 150) Clow = 56, Chigh = 150, Ilow = 151, Ihigh = 200;
  else if(pm <= 250) Clow = 151, Chigh = 250, Ilow = 201, Ihigh = 300;
  else if(pm <= 350) Clow = 251, Chigh = 350, Ilow = 301, Ihigh = 400;
  else if(pm <= 500) Clow = 351, Chigh = 500, Ilow = 401, Ihigh = 500;
  else return 500;
  
  return (Ihigh - Ilow)/(Chigh - Clow)*(pm - Clow) + Ilow;
}


int pm10ToAQI(int pm){
  float Chigh, Clow, Ihigh, Ilow;
  if(pm <= 54) Clow = 0, Chigh = 54, Ilow = 0, Ihigh = 50;
  else if(pm <= 154) Clow = 55, Chigh = 154, Ilow = 51, Ihigh = 100;
  else if(pm <= 254) Clow = 155, Chigh = 254, Ilow = 101, Ihigh = 150;
  else if(pm <= 354) Clow = 255, Chigh = 354, Ilow = 151, Ihigh = 200;
  else if(pm <= 424) Clow = 355, Chigh = 424, Ilow = 201, Ihigh = 300;
  else if(pm <= 504) Clow = 425, Chigh = 504, Ilow = 301, Ihigh = 400;
  else if(pm <= 604) Clow = 505, Chigh = 604, Ilow = 401, Ihigh = 500;
  else return 500;
  
  return (Ihigh - Ilow)/(Chigh - Clow)*(pm - Clow) + Ilow;
}