/**************************************************************************
 This is an example for our Monochrome OLEDs based on SSD1306 drivers

 Pick one up today in the adafruit shop!
 ------> http://www.adafruit.com/category/63_98

EDIT TO PRINT POTENTIOMETER READING
 **************************************************************************/

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

#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)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 int red = 2;
 int green =3;
 int blue = 4;
 int buzzer = 6;
 int button = 7; 

void setup() {
  
  
  Serial.begin(9600);
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(button, INPUT_PULLUP);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3D)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // Show initial display buffer contents on the screen --
  // the library initializes this with an Adafruit splash screen.
  display.display();

    display.clearDisplay();

  display.setTextSize(2); // Draw 2X-scale text
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(10, 0);
  display.println(F("enginner ANNU"));
  display.display();      // Show initial text
  delay(100);

  delay(2000); // Pause for 2 seconds

   

  // Invert and restore display, pausing in-between
 // display.invertDisplay(true);
  //delay(1000);
 // display.invertDisplay(false);
 // delay(1000);


 
}

void loop() {
   
  



  
    display.clearDisplay();
  int value = analogRead(A0);
 String  mambo = String(value) ;

  display.setTextSize(1); // Draw 2X-scale text
  display.setTextColor(SSD1306_WHITE);
display.setCursor(0,0);
display.println("THE VALUE SELECTED IS:");

 display.setTextSize(2); // Draw 2X-scale text
  display.setCursor(20, 20);
  display.println(mambo);
  display.display();      // Show initial text
  delay(100);
  if (value<300){
    digitalWrite(red, HIGH);
    digitalWrite(green, LOW);
    digitalWrite(blue, LOW);
    digitalWrite(buzzer, LOW);
  }
  if(value > 300 && value < 700){
    digitalWrite(red, LOW);
    digitalWrite(green, HIGH);
    digitalWrite(blue, LOW);
    digitalWrite(buzzer, LOW);
  }
  if(value > 700 && value <1000){
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
    digitalWrite(blue, HIGH);
    digitalWrite(buzzer, LOW);
  
  }
  if (value>1000){
    digitalWrite(red, HIGH);
    digitalWrite(blue, HIGH);
    digitalWrite(green, HIGH);
    digitalWrite(buzzer, HIGH);
  }
  if (digitalRead(button) == 0){
    digitalWrite(buzzer, HIGH);

  }
  

}