// RFID - Version: Latest
#include <RFID.h>/*
Sambungan Module RFID RC-522 ke Arduino
* MOSI: Pin 11
* MISO: Pin 12
* SCK : Pin 13
* SS/SDA: Pin 10
* RST: Pin 9
* RQ: Tidak digunakan
*/
#include <SPI.h>
#include <RFID.h>
#define SS_PIN 10
#define RST_PIN 9

RFID rfid(SS_PIN,RST_PIN);

const int buzzer = 7;   //Passive buzzer ke Pin D7 dan GND
const int doorLock = 8; //Driver Selenoid Door Lock/Relay input ke pin D8
int serNum[5];          //Variable buffer Scan Card
int cards [][5] = { {153,84,23,76,150} }; // <--Master Card
int cards1[][5] = { {199,190,132,100,153} }; //Slave Card
int cards2[][5] = { {0,0,0,0,0} }; //Slave Card
int cards3[][5] = { {0,0,0,0,0} }; //Slave Card
int cards4[][5] = { {0,0,0,0,0} }; //Slave Card
int cards5[][5] = { {0,0,0,0,0} }; //Slave Card
int cards6[][5] = { {0,0,0,0,0} }; //Slave Card
int cards7[][5] = { {0,0,0,0,0} }; //Slave Card
int cards8[][5] = { {0,0,0,0,0} }; //Slave Card
int cards9[][5] = { {0,0,0,0,0} }; //Slave Card

bool access = false;

int alarm = 0;
uint8_t alarmStat = 0;
uint8_t maxError = 5;
//Coding berikut dibuat oleh Dani untuk www.belajarduino.com
//Semoga bermanfaat bagi yang sedang belajar RFID system
//Support by RAJACELL - BEKASI
//Semua module yang dibutuhkan dapat dibeli di www.tokopedia.com/rajacell
void setup(){
    Serial.begin(9600);
    SPI.begin();
    rfid.init();

    pinMode(doorLock, OUTPUT);
    digitalWrite(doorLock, HIGH);

  tone (buzzer,1200);
  delay (2000);
  noTone (buzzer);
}

void loop(){
  if (alarm >= maxError){
    alarmStat = 1;    }

  if (alarmStat == 0){
    if(rfid.isCard()){

        if(rfid.readCardSerial()){
            Serial.print(rfid.serNum[0]);
            Serial.print(" ");
            Serial.print(rfid.serNum[1]);
            Serial.print(" ");
            Serial.print(rfid.serNum[2]);
            Serial.print(" ");
            Serial.print(rfid.serNum[3]);
            Serial.print(" ");
            Serial.print(rfid.serNum[4]);
            Serial.println("");

            for(int x = 0; x < sizeof(cards); x++){
              for(int i = 0; i < sizeof(rfid.serNum); i++ ){
                  if( (rfid.serNum[i] != cards [x][i])
                  && (rfid.serNum[i] != cards2[x][i])
                  && (rfid.serNum[i] != cards3[x][i])
                  && (rfid.serNum[i] != cards4[x][i])
                  && (rfid.serNum[i] != cards5[x][i])
                  && (rfid.serNum[i] != cards6[x][i])
                  && (rfid.serNum[i] != cards7[x][i])
                  && (rfid.serNum[i] != cards8[x][i])
                  && (rfid.serNum[i] != cards9[x][i])
                  && (rfid.serNum[i] != cards1[x][i])
                  ) {
                      access = false;
                      break;
                  } else {
                      access = true;
                  }
              }
              if(access) break;
            }
        }

       if(access){
           digitalWrite(doorLock, LOW);
           tone (buzzer,900);
           delay(100);
           tone (buzzer,1200);
           delay(100);
           tone (buzzer,1800);
           delay(200);
           noTone(buzzer);
           delay(600);
           digitalWrite(doorLock, HIGH);
           lcd.clear();
      } else {
           alarm = alarm+1;
           Serial.println("Not allowed!");
           tone (buzzer,900);
           delay(200);
           noTone(buzzer);
           delay(200);
           tone (buzzer,900);
           delay(200);
           noTone (buzzer);
           delay(500);
           lcd.clear();
       }
    }
    rfid.halt();
}
else {
  Serial.println("-System LOCKED- ");
  Serial.println(" Please Wait ");
for(int i=60; i>0; i--){
tone (buzzer,1800);
noTone (buzzer);
alarmStat = 0;
alarm = 0;
  }
}