int buttonState;
#include <ESP32Servo.h>
Servo myservo;
int pos = 90;
#include <LiquidCrystal.h>

LiquidCrystal lcd(33, 32, 25, 23, 22, 21);



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(12, OUTPUT); // Grün
  pinMode(13, OUTPUT); // Gelb
  pinMode(14, OUTPUT); // Rot
  pinMode(18, OUTPUT); // Fussgänger Grün
  pinMode(19, OUTPUT); // Fussgänger Rot
  pinMode(15, INPUT_PULLUP);  // Knopf
  pinMode(27, OUTPUT); // Ton
  myservo.attach(26); // Servo
  lcd.begin(16,2);    // LCD Screen
  lcd.print("   Dont Walk!"); // LCD Erste Ausgabe
}


void AmpelZuRot() {       // Ampel zu Rot wechseln
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  digitalWrite(14, HIGH);
  delay(2000);
}

void FussgaengerAmpel() {   // Fussgängerampel mit Ton und Schranke umschalten
  digitalWrite(19, LOW);
  digitalWrite(18, HIGH);
  myservo.write(0);
  lcd.clear();
  lcd.print("     Walk!");
  tone(27, 31, 1000);
  delay(200);
  lcd.clear();
  lcd.print("    ...3...");  
  tone(27, 31, 1000);
  delay(200);
  lcd.clear();
  lcd.print("    ...2...");
  tone(27, 31, 1000);
  delay(200);
  lcd.clear();
  lcd.print("    ...1...");
  tone(27, 31, 1000);
  myservo.write(90);
  lcd.clear();
  lcd.print("   Dont Walk!");
  digitalWrite(18, LOW);
  digitalWrite(19, HIGH);
  delay(2000);
}

void AmpelZuGruen() {     // Ampel zu Grün wechseln
  digitalWrite(14, LOW);
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  digitalWrite(12, HIGH);
  delay(1000);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  digitalWrite(12, HIGH);
  digitalWrite(19, HIGH);
  buttonState = digitalRead(15); // Wenn der Knopf gedrückt wird, mache das:
  if (buttonState == LOW) {
    delay(1000);
    AmpelZuRot();
    FussgaengerAmpel();
    AmpelZuGruen();
  }
}