Smart parking

VOVOSL_Pametni_Parking_MKR1000_2.c

#include <Servo.h>            //It adds the library to the program.
#include <LiquidCrystal.h>

Servo rampa;                 //It creates a servo object that manages the servo.

int izlaz = 0;               //Pin attached to the sensor at the exit.
int ulaz = 1;               //Pin attached to the sensor at the entrance.

int spusteno = 177;          //Position of the ramp down.
int dignuto = 90;            //Position of the ramp up.

int kapacitet = 6;           //The capacity of the parking.
int  slobodnaMjesta = 6;     //The number of vacancies (the parking lot is initially empty).

const int rs = 7, en = 6, d4 = 5, d5 = 4, d6 = 3, d7 = 2;       //It initializes the library by adding required pins for LCD
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);                        //to the pin to which Arduino is connected.

byte znak[8] = {          //It creates the data for a character that is printed on
  B11011,                 //LCD, but it is not a standard alphanumeric (Z)
  B01110,                 //necessary to print the message “Unfortunately, there are no vacancies”.
  B00000,
  B11111,
  B00110,
  B01100,
  B11111,
};

void setup() {
  rampa.attach(9);                  //It connects the servo.

  pinMode(izlaz, INPUT);            //It sets the pins' of the sensors for entrance and exit as input.
  pinMode(ulaz, INPUT);
  rampa.write(spusteno);            //It sets the ramp to the down position.


  lcd.begin(16, 2);                 //It sets the number of characters and rows on the LCD.
  lcd.setCursor(2, 0);
  lcd.print("Super Mega");          //It prints the message on the LCD.
  lcd.setCursor(4, 1);
  lcd.print("PARKING");
  delay(2000);
  lcd.clear();

  lcd.createChar(0, znak);
  lcd.begin(16, 2);

}

void loop() {

  if (digitalRead(ulaz) == 0)
  {
    if (slobodnaMjesta != 0) {
      delay(500);
      slobodnaMjesta--;
      rampa.write(dignuto);
      lcd.print("Slobodna mjesta:");
      lcd.setCursor(5, 1);
      lcd.print(slobodnaMjesta);
      delay(3000);
      rampa.write(spusteno);
    } else {
      delay(500);
      lcd.print("Na");
      lcd.write(byte(0));
      lcd.print("alost, nema");
      lcd.setCursor(0, 1);
      lcd.print("slobodnih mjesta");
      delay(2000);
    }
  }
  if (digitalRead(izlaz) == 0)
  {
    if (slobodnaMjesta != kapacitet) {
      delay(500);
      slobodnaMjesta++;
      rampa.write(dignuto);
      lcd.print("Slobodna mjesta:");
      lcd.setCursor(5, 1);
      lcd.print(slobodnaMjesta);
      delay(3000);
      rampa.write(spusteno);
    }
  }
  lcd.clear();
}