/*********
this code includes ESP32, OLED Display, dht temp for wokwi software. 
it shown advanced in 1st line for 2 secand
not advanced in 1st line for 2 sec
dht library is not same a s arduino uno 
  Rui Santos
  Complete project details at https://randomnerdtutorials.com  
*********/

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
//--
#include "DHTesp.h"
const int DHT_PIN = 15;
DHTesp dhtSensor;

//--

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(115200);
dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
// never change this
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  /* this one wil always show in display. no use 
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  // Display static 
  // Horizontal 10spaces and alphabets
  //Virtically 4 space
  display.println(" Advanced ");// 1
  display.println("  Safety  ");//2
  display.println("Temp: 23^C");//3
  display.println(" BPM: 35  ");//4
  display.display(); 
  */
}
void loop() {
  //===show in serial monitor 
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
//============1st display
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println(" Advanced ");// 1
  display.println("  Safety  ");//2
  display.println("Temp: " + String(data.temperature, 2) + "C");// 1
  //display.print(char(223));// for degree
  display.println("Humidity: " + String(data.humidity, 1) + "%");//2
 // display.println("---");//3
  display.display(); 
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
//==============2nd display after 2 sec
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println(" not Advanced ");// 1
  display.println("  notSafety  ");//2
  display.println("Temp: " + String(data.temperature, 2) + "C");// 1
  //display.print(char(223));// for degree
  display.println("Humidity: " + String(data.humidity, 1) + "%");//2
 // display.println("---");//3
  display.display(); 
}