//This code was created by Gapmekatron
//Copyright © 2026 gapmekatron.com

#include Adafruit_GFX.h
#include Adafruit_ST7735.h
#include SPI.h

// TFT Pin Config sesuai gambar diatas
#define TFT_DC    12  //alternatif lain 16
#define TFT_CS    13  //alternatif lain 22 
#define TFT_MOSI  14  //alternatif lain 23
#define TFT_CLK   27  //alternatif lain 18
#define TFT_RST   0
#define TFT_MISO  0

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST);

// Warna
#define BLACK    ST77XX_BLACK
#define WHITE    ST77XX_WHITE
#define RED      ST77XX_RED
#define GREEN    ST77XX_GREEN
#define BLUE     ST77XX_BLUE
#define CYAN     ST77XX_CYAN
#define MAGENTA  ST77XX_MAGENTA
#define YELLOW   ST77XX_YELLOW
 
// Nilai sensor & target
int pm25 = 56, pm10 = 60, co = 60, tempC = 29, hum = 70, voc = 45;
int target_pm25, target_pm10, target_co, target_tempC, target_hum, target_voc;

unsigned long lastUpdate = 0;
unsigned long newDataTimer = 0;

// Koordinat untuk angka
int x_pm25 = 10, y_pm25 = 38;
int x_pm10 = 10, y_pm10 = 66;
int x_co   = 10, y_co   = 94;
int x_temp = 88, y_temp = 38;
int x_hum  = 88, y_hum  = 66;
int x_voc  = 88, y_voc  = 94;

void drawStaticLayout() {
  tft.fillScreen(BLACK);

  // Judul
  tft.setTextColor(YELLOW);
  tft.setTextSize(1);
  tft.setCursor(8, 2);
  tft.println("Air Quality Monitoring");
  tft.setCursor(35, 12);
  tft.println("System (AQMS)");

  // Kotak kiri
  tft.fillRect(5, 28, 72, 25, BLUE);
  tft.fillRect(5, 56, 72, 25, BLUE);
  tft.fillRect(5, 84, 72, 25, MAGENTA);

  // Kotak kanan
  tft.fillRect(83, 28, 72, 25, RED);
  tft.fillRect(83, 56, 72, 25, RED);
  tft.fillRect(83, 84, 72, 25, MAGENTA);

  // Label
  tft.setTextColor(WHITE);
  tft.setCursor(10, 30);  tft.print("PM2.5 :");
  tft.setCursor(10, 58);  tft.print("PM10  :");
  tft.setCursor(10, 86);  tft.print("CO    :");

  tft.setCursor(88, 30);  tft.print("Temp :");
  tft.setCursor(88, 58);  tft.print("Humidity:");
  tft.setCursor(88, 86);  tft.print("VOC :");
}

void updateValue(int x, int y, int ¤tValue, int targetValue, String unit) {
  // Hapus angka lama (hanya area angka)
  tft.fillRect(x, y, 60, 10, BLACK);

  // Gerakkan angka perlahan ke target
  if (currentValue < targetValue) currentValue++;
  else if (currentValue > targetValue) currentValue--;

  // Tulis angka baru
  tft.setTextColor(WHITE);
  tft.setCursor(x, y);
  tft.printf("%d %s", currentValue, unit.c_str());
}

void setup() {
  tft.initR(INITR_BLACKTAB);
  tft.setRotation(1);
  randomSeed(analogRead(34));

  drawStaticLayout();

  // Set target awal sama dengan nilai awal
  target_pm25 = pm25;
  target_pm10 = pm10;
  target_co   = co;
  target_tempC = tempC;
  target_hum  = hum;
  target_voc  = voc;
}

void loop() {
  unsigned long now = millis();

  // Ganti target setiap 3 detik
  if (now - newDataTimer > 3000) {
    newDataTimer = now;
    target_pm25  = random(10, 100);
    target_pm10  = random(20, 150);
    target_co    = random(1, 100);
    target_tempC = random(20, 35);
    target_hum   = random(40, 90);
    target_voc   = random(10, 70);
  }

  // Update angka tiap 50 ms
  if (now - lastUpdate > 500) {
    lastUpdate = now;

    updateValue(x_pm25, y_pm25, pm25, target_pm25, "ug/m3");
    updateValue(x_pm10, y_pm10, pm10, target_pm10, "ug/m3");
    updateValue(x_co,   y_co,   co,   target_co,   "ppm");

    updateValue(x_temp, y_temp, tempC, target_tempC, "C");
    updateValue(x_hum,  y_hum,  hum,   target_hum,   "%");
    updateValue(x_voc,  y_voc,  voc,   target_voc,   "ug/m3");
  }
}