/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/

#include "DHTesp.h"
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET LED_BUILTIN
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

const int DHT_PIN = 15;
const int BUZZER  = 13;
const int RED = 5;
const int YELLOW = 18;
const int BLUE = 19;

unsigned long timeScale               = 1000;
unsigned long routineTime             = 1;
unsigned long routineTimepoint        = 0;

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  pinMode(BUZZER, OUTPUT);
  pinMode(RED, OUTPUT);
  pinMode(BLUE, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
   if (millis() - routineTimepoint > (routineTime * timeScale)) {
   readDHT22 (); 
   routineTimepoint = millis();
   }
}



void readDHT22 () {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  display.clearDisplay();
   oledDisplayHeader();
   display.setCursor(35, 0);
   display.print(String(data.temperature, 2)+ " C");
   display.setCursor(73, 10);
   display.print(String(data.humidity, 1) + " %");

   if (data.temperature <=29) {
    display.setCursor(45, 25);
    display.print("SUHU RENDAH");
    Serial.println ("SUHU RENDAH");
    Serial.println("---");

    digitalWrite(BLUE, HIGH);
    digitalWrite(YELLOW, LOW);
    digitalWrite(RED, LOW);
    digitalWrite(BUZZER, LOW);
    
   } else if  (data.temperature >= 29 && data.temperature <= 35 ){
    display.setCursor(45, 25);
    display.print("SUHU CUKUP");
    Serial.println ("SUHU CUKUP");
    Serial.println("---");
    
    digitalWrite(BLUE, LOW);
    digitalWrite(YELLOW, HIGH);
    digitalWrite(RED, LOW);
    digitalWrite(BUZZER, LOW);

   } else if (data.temperature >= 35 )  {
    display.setCursor(45, 25);
    display.print("SUHU PANAS");
    Serial.println ("SUHU PANAS" );
    Serial.println("---");
    
    digitalWrite(BLUE, LOW);
    digitalWrite(YELLOW, LOW);
    digitalWrite(RED, HIGH);
    digitalWrite(BUZZER,HIGH);
    tone(BUZZER, 100, 1000);
   }

  display.display();
}

void oledDisplayHeader(){
 display.setTextSize(1);
 display.setTextColor(WHITE);
 display.setCursor(0, 0);
 display.print("Suhu:");
 display.setCursor(0, 10);
 display.print("Kelembapan:");
 display.setCursor(0, 25);
 display.print("Status:");
}

void oledDisplay(int size, int x,int y, float value, String unit){
 int charLen=12;
 int xo=x+charLen*3.1;
 int xunit=x+charLen*3.6;
 int xval = x; 
 display.setTextSize(size);
 display.setTextColor(WHITE);
 
  display.setCursor(xval, y);
  display.print(value,0);
 if(unit=="C"){
   display.drawCircle(xo, y+2, 2, WHITE);
   display.setCursor(xunit, y);
   }
   display.print(unit);
}