parking tracker with lcd and iot

#include <LiquidCrystal.h>
/*
   LCD in 4-Bit-Modus:
       LCD RS pin an digital pin 8
       LCD RW pin an digital pin 13
       LCD Enable pin an digital pin 9
       LCD D4 pin an digital pin 4
       LCD D5 pin an digital pin 5
       LCD D6 pin an digital pin 6
       LCD D7 pin an digital pin 7
*/
//LCD Lib
int p1Red = 22;
int p2Red = 24;
int p3Red = 26;

int p1Green = 23;
int p2Green = 25;
int p3Green = 27;

int p1Pin = 14;
int p2Pin = 15;
int p3Pin = 16;

int p1Status = 0;
int p2Status = 0;
int p3Status = 0;

int emptySpaces = 3;
LiquidCrystal lcd(8, 13, 9, 4, 5, 6, 7);

void setup() {
  Serial.begin(9600);
  Serial1.begin(115200);

  pinMode(p1Pin, INPUT);
  pinMode(p2Pin, INPUT);
  pinMode(p3Pin, INPUT);

  pinMode(p1Red, OUTPUT);
  pinMode(p2Red, OUTPUT);
  pinMode(p3Red, OUTPUT);
  pinMode(p1Green, OUTPUT);
  pinMode(p2Green, OUTPUT);
  pinMode(p3Green, OUTPUT);

  // Car Park No.1 LED Control
  digitalWrite(p1Green, 1);
  digitalWrite(p1Red, 0);

  // Car Park No.2 LED Control
  digitalWrite(p2Green, 1);
  digitalWrite(p2Red, 0);

  // Car Park No.3 LED Control
  digitalWrite(p3Green, 1);
  digitalWrite(p3Red, 0);


  // Display initialisieren
  lcd.clear();
  lcd.begin(16, 2); // 16x2 Zeichen
  lcd.setCursor(0, 0);
  lcd.print("Parking Tracker");
  lcd.setCursor(0, 1);
  lcd.print("Initializing...");
  delay(1000);
  lcd.clear();

  //delay(50000);
}


void loop() {

  p1Status = digitalRead(p1Pin);
  p2Status = digitalRead(p2Pin);
  p3Status = digitalRead(p3Pin);
  /*Serial.print(p1Status);
    Serial.print(p2Status);
    Serial.println(p3Status);*/


  /////////////////////////////////////////////////////////////// 2 SPACES LEFT OPEN
  if (p1Status == 1 && p2Status == 0 && p3Status == 0) {
    emptySpaces = 2;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 0);
    digitalWrite(p1Red, 1);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 1);
    digitalWrite(p2Red, 0);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 1);
    digitalWrite(p3Red, 0);

    //Show 2 on screen
    sos2();
    //Send 2 to Nodemcu
    Serial1.write(2);

  }
  else if (p1Status == 0 && p2Status == 1 && p3Status == 0) {
    emptySpaces = 2;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 1);
    digitalWrite(p1Red, 0);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 0);
    digitalWrite(p2Red, 1);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 1);
    digitalWrite(p3Red, 0);

    //Show 2 on screen
    sos2();
    //Send 2 to Nodemcu
    Serial1.write(2);
  }
  else if (p1Status == 0 && p2Status == 0 && p3Status == 1) {
    emptySpaces = 2;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 1);
    digitalWrite(p1Red, 0);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 1);
    digitalWrite(p2Red, 0);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 0);
    digitalWrite(p3Red, 1);

    //Show 2 on screen
    sos2();
    //Send 2 to Nodemcu
    Serial1.write(2);
  }
  //////////////////////////////////////////////////////////////////////////

  /////////////////////////////////////////////////////////////// 1 SPACES LEFT OPEN
  else if (p1Status == 1 && p2Status == 1 && p3Status == 0) {
    emptySpaces = 1;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 0);
    digitalWrite(p1Red, 1);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 0);
    digitalWrite(p2Red, 1);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 1);
    digitalWrite(p3Red, 0);

    //Show 1 on screen
    sos1();
    //Send 1 to Nodemcu
    Serial1.write(1);
  }
  else if (p1Status == 1 && p2Status == 0 && p3Status == 1) {
    emptySpaces = 1;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 0);
    digitalWrite(p1Red, 1);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 1);
    digitalWrite(p2Red, 0);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 0);
    digitalWrite(p3Red, 1);

    //Show 1 on screen
    sos1();
    //Send 1 to Nodemcu
    Serial1.write(1);
  }
  else if (p1Status == 0 && p2Status == 1 && p3Status == 1) {
    emptySpaces = 1;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 1);
    digitalWrite(p1Red, 0);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 0);
    digitalWrite(p2Red, 1);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 0);
    digitalWrite(p3Red, 1);

    //Show 1 on screen
    sos1();
    //Send 1 to Nodemcu
    Serial1.write(1);
  }
  //////////////////////////////////////////////////////////////////////////

  /////////////////////////////////////////////////////////////// 0 SPACES LEFT OPEN
  else if (p1Status == 1 && p2Status == 1 && p3Status == 1) {
    emptySpaces = 0;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 0);
    digitalWrite(p1Red, 1);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 0);
    digitalWrite(p2Red, 1);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 0);
    digitalWrite(p3Red, 1);

    //Show 0 on screen
    sos0();
    //Send 0 to Nodemcu
    Serial1.write(0);
  }
  //////////////////////////////////////////////////////////////////////////

  /////////////////////////////////////////////////////////////// 3 SPACES LEFT OPEN
  else if (p1Status == 0 && p2Status == 0 && p3Status == 0) {
    emptySpaces = 3;
    // Car Park No.1 LED Control
    digitalWrite(p1Green, 1);
    digitalWrite(p1Red, 0);

    // Car Park No.2 LED Control
    digitalWrite(p2Green, 1);
    digitalWrite(p2Red, 0);

    // Car Park No.3 LED Control
    digitalWrite(p3Green, 1);
    digitalWrite(p3Red, 0);

    //Show 3 on screen
    sos3();
    //Send 3 to Nodemcu
    Serial1.write(3);
  }

  delay(2000);
}


void sos0() {
  lcd.setCursor(0, 0);
  //////////"1234567891234567"
  lcd.print("Full parking!!  ");
  lcd.setCursor(1, 1);
  lcd.print("No Space Left");
  delay(500);
}

void sos1() {
  lcd.setCursor(0, 0);
  //////////"1234567891234567"
  lcd.print("Empty parking:  ");
  lcd.setCursor(1, 1);
  lcd.print(1);
  delay(500);
}

void sos2() {
  lcd.setCursor(0, 0);
  //////////"1234567891234567"
  lcd.print("Empty parking:  ");
  lcd.setCursor(1, 1);
  lcd.print(2);
  delay(500);
}

void sos3() {
  lcd.setCursor(0, 0);
  //////////"1234567891234567"
  lcd.print("Empty parking:  ");
  lcd.setCursor(1, 1);
  lcd.print(3);
  delay(500);
}