#include <LiquidCrystal_I2C.h>
#include <Servo.h>

Servo ESC;
LiquidCrystal_I2C lcd(0X27, 16, 2);

#define button 8
#define yled 13
#define kled 6
 
unsigned long newTime;
unsigned long oldTime = 0;
unsigned long startTime;
unsigned long endTime;
unsigned long duration;

int durum = 0;
int b_durum = 0;
int potValue;
int currentValue;
int BuzzerPin = 7;
int ledState = LOW;
int esc_pwm ;
int last_pwm;
int a=10;
int b=5;

long previousMillis = 0;
long interval = 1000;

bool initial = false;
bool starting_new = false ;

void setup() {

  lcd.begin(16,2);

  lcd.clear();

  ESC.attach(9, 900, 2000);  // set the PWM range to 900-2000

  pinMode(button, INPUT);
  pinMode(kled, OUTPUT);
  pinMode(yled, OUTPUT);
  pinMode(BuzzerPin, OUTPUT);
  
  Serial.begin(9600);

}

void loop() {
  // lcdde gösterilen değerin düzgün bir şekilde gösterilmesini sağlıyor yani lcd görüntüleme için yetişmeye çalışıyor.
  
  newTime = millis();
  
  if (newTime - oldTime > 250) {
    
    lcd.clear();
    oldTime = newTime;
  }
  
  b_durum = digitalRead(button);

  if(initial == false){

    if (digitalRead(button) == LOW){ // button pressed & timer not running already
      
      startTime = millis();
      Serial.println("Bp");
      Serial.println(startTime);
    }

    if (digitalRead(button) == HIGH){ // timer running, button released

      endTime = millis();
      Serial.println("Br");
      Serial.println(endTime);
      duration = endTime - startTime; //ne kadar süre basılı kaldı
      Serial.print ("button press time in milliseconds: ");
      Serial.println (duration);

      if (duration >= 2000)
        initial = true;
      else
        initial = false;
    }
  }

  if (initial == true && b_durum == 1)

  {
    durum = !(durum);
    tone(BuzzerPin, 1000); // 1000 Hz frekansında ses çal
    while (digitalRead(button) == 1)
    {
      delay(1);
    }
    noTone(BuzzerPin);
    Serial.println("DİLARA");

    starting_new = true;
    potValue = analogRead(A0);
    currentValue = map(potValue, 0, 1023, 900, 2000);
    if(starting_new == true && durum == 1){

      for( esc_pwm = 900; esc_pwm<=currentValue;){
        esc_pwm = esc_pwm +10;
        delay(50);
        Serial.print("esc_pwm: ");
        Serial.print(esc_pwm);
        Serial.print("        currentValue: ");
        Serial.println(currentValue);
         lcd.setCursor(0, 0);
         lcd.print("Sistem Basladi");
         lcd.setCursor(0, 1);
         lcd.print("Deger: ");
         lcd.print(currentValue);
    
        ESC.writeMicroseconds(esc_pwm);
        last_pwm=esc_pwm;
        Serial.println("last_pwm");
        Serial.println(last_pwm);
        

      }
      


     //if ( abs(currentValue - potValue) < 11) {
      // starting_new = false;
        Serial.println("ENESssss");
      
    }

    if(starting_new == true && durum == 0){

      for(last_pwm=esc_pwm; a>b;){
        esc_pwm = esc_pwm -10;
        delay(50);
        Serial.print("esc_pwm: ");
        Serial.print(esc_pwm);
        Serial.print("        last_pwm: ");
        Serial.println(last_pwm); lcd.setCursor(0, 0);
        lcd.print("Sistem Basladi");
        lcd.setCursor(0, 1);
        lcd.print("Deger: ");
        lcd.print(currentValue);
      

        ESC.writeMicroseconds(esc_pwm);
        if(esc_pwm==900){
          break;
        }
        

      }
    }
    
        
      
  
  }

  if (initial == true && durum == 1) {
    
    digitalWrite(13, HIGH);
    digitalWrite(6, LOW);
    potValue = analogRead(A0);
    currentValue = map(potValue, 0, 1023, 900, 2000);  // map the pot value to the PWM range
  
    lcd.setCursor(0, 0);
    lcd.print("Sistem Basladi");
    lcd.setCursor(0, 1);
    lcd.print("Deger: ");
    lcd.print(currentValue);
    
    ESC.writeMicroseconds(currentValue);  // use writeMicroseconds to set the PWM value
  }
  else{

    unsigned long currentMillis = millis();
 
    if(currentMillis - previousMillis > interval){
      previousMillis = currentMillis;
      if(ledState==LOW)
      
        ledState=HIGH;
      else
      
       ledState=LOW;
       
      digitalWrite(kled,ledState);

    }

    digitalWrite(13, LOW);
    potValue = analogRead(A0);
    currentValue = map(potValue, 0, 1023, 900, 2000);  // map the pot value to the PWM range
    
    lcd.setCursor(0, 0);
    lcd.print("Sistem Beklemede");
    lcd.setCursor(0, 1);
    lcd.print("Deger: ");
    lcd.print(currentValue);
    ESC.writeMicroseconds(900);
    
  }
}