ArduinoCode_Proftaak_CardScanner

#include <Arduino.h>
#include <U8x8lib.h>
#include <SPI.h>
#include <MFRC522.h>

constexpr uint8_t RST_PIN = 9;     // Configurable, see typical pin layout above
constexpr uint8_t SS_PIN = 10;     // Configurable, see typical pin layout above

MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance.

MFRC522::MIFARE_Key key;
U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(A5, A4, U8X8_PIN_NONE);

int buttonState = 0;
int buttonPin = 7;
bool conn = false;
bool stopClear = false;

void setup() {
  // put your setup code here, to run once:
  //OLED
  u8x8.begin();
  u8x8.setPowerSave(0);
  u8x8.setFlipMode(0);
  u8x8.setFont(u8x8_font_pxplusibmcgathin_f);

  delay(500);
  //Deel 2
  Serial.begin(9600);
  SPI.begin();        // Init SPI bus
  mfrc522.PCD_Init(); // Init MFRC522 card

  u8x8.clear();
  u8x8.drawString(0, 0, "Klaar om een");
  u8x8.drawString(0, 1, "Kaart te scannen");
}

void loop() {
  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    Serial.println("&ButtonHIGH");
  }

  if (conn == false) {
    u8x8.drawString(0, 4, "Geen connectie");
  }

  if (Serial.available()) {
    digitalWrite(4, HIGH);
    String reader =  Serial.readString();

    if (reader.indexOf("STARTEDUP") > 0) {
      u8x8.clear();
      u8x8.drawString(0, 0, "Connectie");
      u8x8.drawString(0, 1, "gemaakt");
      conn = true;
      delay(4000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("PARKING") > 0) {
      u8x8.drawString(0, 0, "Auto wordt");
      u8x8.drawString(0, 1, "geparkeerd");
      delay(4000);
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("ERROR") > 0) {
      u8x8.drawString(0, 0, "Er was een");
      u8x8.drawString(0, 1, "Error opeens..");
      delay(4000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("UNKNOWNUSER") > 0) {
      u8x8.clear();
      u8x8.drawString(0, 0, "Kaart niet");
      u8x8.drawString(0, 1, "herkent");
      delay(4000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("NOMONEY") > 0) {
      u8x8.clear();
      u8x8.drawString(0, 0, "Niet genoeg geld");
      delay(4000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("UNPARK") > 0) {
      u8x8.clear();
      u8x8.drawString(0, 0, "Auto wordt");
      u8x8.drawString(0, 1, "gehaald");
      Serial.println("@refresh");
      delay(4000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("UNPARKED") > 0) {
      u8x8.clear();
      float money = reader.indexOf('|');
      u8x8.drawString(0, 0, "Auto gehaald");
      u8x8.drawString(0, 1, "balans: ");
      u8x8.setCursor(9, 1);
      u8x8.print(String(money));
      delay(2000);
      u8x8.clear();
      u8x8.drawString(0, 0, "Klaar om een");
      u8x8.drawString(0, 1, "Kaart te scannen");
    }
    if (reader.indexOf("SCAN") > 0) {
      u8x8.clear();
      int moneyIndex = reader.indexOf('|');
      int  moneyIndex2 = reader.indexOf('|', moneyIndex + 1);
      String money = reader.substring(moneyIndex , moneyIndex2);
      u8x8.drawString(0, 0, "Kaart gescanned");
      u8x8.drawString(0, 2, "balans: ");
      u8x8.setCursor(8, 2);
      u8x8.print(String(money));

      bool parked;
      if (reader.indexOf(" USERPARKED") > 0) {
        u8x8.drawString(0, 3, "Klik op de knop ");
        u8x8.drawString(0, 4, "om uw auto ");
        u8x8.drawString(0, 5, "op te halen");
        parked = true;
        Serial.println("&parked = true");
      } else if (reader.indexOf(" USERNOTPARKED") > 0) {
        u8x8.drawString(0, 3, "Klik op de knop ");
        u8x8.drawString(0, 4, "om uw auto ");
        u8x8.drawString(0, 5, "te parkeren");
        parked = false;
        Serial.println("&parked = false");
      }

      //wachten voor pushbutton om te parkeren
      bool timeOut = false;
      int counter;
      while (timeOut == false) {
        buttonState = digitalRead(buttonPin);
        if (buttonState == HIGH) {
          timeOut = true;
          Serial.println("&Ding is ook klaar");
          delay(200);
          if (parked == false) {
            Serial.println("@parkeren ");
          } else if (parked == true) {
            Serial.println("@unparken ");
          }
          u8x8.clear();
          delay(500);
        }
        counter++;
        delay(10);
        if (counter == 700) {
          Serial.println("&Counter is ook klaar");
          timeOut = true;
          u8x8.clear();
          u8x8.drawString(0, 0, "Klaar om een");
          u8x8.drawString(0, 1, "Kaart te scannen");
        }
      }
    }


    if (reader.indexOf("ABO") > 0) {
      Serial.println("&User scanned");
      u8x8.drawString(0, 0, "Kaart gescanned");
      u8x8.drawString(0, 1, "Type: Abonnement. ");

      bool parked;
      if (reader.indexOf(" USERPARKED") > 0) {
        u8x8.drawString(0, 3, "Klik op de knop om");
        u8x8.drawString(0, 4, "Auto op te halen");
        parked = true;
        Serial.println("&parked = true");
      } else if (reader.indexOf(" USERNOTPARKED") > 0) {
        u8x8.drawString(0, 3, "Klik op de knop om");
        u8x8.drawString(0, 4, "Auto te parkeren");
        parked = false;
        Serial.println("&parked = false");
      }

      //wachten voor pushbutton om te parkeren
      bool timeOut = false;
      int counter;
      while (timeOut == false) {
        buttonState = digitalRead(buttonPin);
        if (buttonState == HIGH) {
          timeOut = true;
          Serial.println("&Ding is ook klaar");
          delay(200);
          if (parked == false) {
            Serial.println("@parkeren ");
          } else if (parked == true) {
            Serial.println("@unparken ");
          }
          u8x8.clear();
          delay(500);
        }
        counter++;
        delay(10);
        if (counter == 700) {
          Serial.println("&Counter is ook klaar");
          timeOut = true;
          u8x8.clear();
          u8x8.drawString(0, 0, "Klaar om een");
          u8x8.drawString(0, 1, "Kaart te scannen");
        }
      }
    }
    delay(100);
    digitalWrite(4, LOW);
  } else {
    // put your main code here, to run repeatedly:
    if ( ! mfrc522.PICC_IsNewCardPresent())
      return;
    if ( ! mfrc522.PICC_ReadCardSerial()) {
      return;
    } else {
      MFRC522::StatusCode status;

      byte buffer[16];
      byte block;
      byte size = sizeof(buffer);
      byte len;

      String content = "";
      for (byte i = 0; i < mfrc522.uid.size; i++)
      {
        content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
        content.concat(String(mfrc522.uid.uidByte[i], HEX));
      }
      content.toUpperCase();
      Serial.println("#" + content);
      delay(1000);
    }
  }
}

void dump_byte_array(byte *buffer, byte bufferSize) {
  for (byte i = 0; i < bufferSize; i++) {
    Serial.print(buffer[i] < 0x10 ? " 0" : " ");
    Serial.print(buffer[i], HEX);
  }
}