An Alternate RFID Key for Bike Security

/*
program by Shubham Shinganapure on 29-08-2019

for RFID Key For bike 
*/

#include <SPI.h>
#include <MFRC522.h>
#define RST_PIN         9          // Configurable, see typical pin layout above
#define SS_1_PIN        10         // Configurable, take a unused pin, only HIGH/LOW required, must be diffrent to SS 2
#define SS_2_PIN        8          // Configurable, take a unused pin, only HIGH/LOW required, must be diffrent to SS 1

#define NR_OF_READERS   2

byte ssPins[] = {SS_1_PIN, SS_2_PIN};

MFRC522 mfrc522[NR_OF_READERS];   // Create MFRC522 instance.
int ledRed = A1;
int rly = 6;

const int ledBlue =  A5;
int ledState = LOW;   

unsigned long previousMillis = 0;  
const long interval = 2000; 
const long interval2 = 70; 
int flg=0;


void setup() {
  pinMode(ledRed,OUTPUT);
  pinMode(ledBlue,OUTPUT);
  pinMode(rly,OUTPUT);
  SPI.begin();        // Init SPI bus
digitalWrite(rly,LOW);
digitalWrite(ledBlue,HIGH);
  for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
    mfrc522[reader].PCD_Init(ssPins[reader], RST_PIN); // Init each MFRC522 card
    //Serial.print(F("Reader "));
   // Serial.print(reader);
    //Serial.print(F(": "));
    mfrc522[reader].PCD_DumpVersionToSerial();
  }
//delay(5000);
}

/**
 * Main loop.
 */
 int i =0 ;
 char arry2[5] = {0x06,0xF8,0x51,0x1B,0}; // put your cards ID here. for example my card ID is 06,F8,51,1B so write it by this way{0x06,0xF8,0x51,0x1B,0} 
  char arry[5] = {0};
  


void loop() {
   //Blink();
   readTag();
              if(strncmp(arry2,arry,4) == 0)
                 { 
                 
                  digitalWrite(rly,HIGH);
                 // digitalWrite(ledBlue,HIGH);
                  Blink();
                 
                  //arry[5] = {0};
                 // memset(arry,0,5);
                
                 }
            if( flg==1 &&(strncmp(arry2,arry,4) != 0)) 
            {
              digitalWrite(rly,LOW);
               //digitalWrite(ledBlue,LOW);
              Blink2(); 
               memset(arry,0,5);
               flg=0;
                }
}

void readTag()
{
  for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
    // Look for new cards

    if (mfrc522[reader].PICC_IsNewCardPresent() && mfrc522[reader].PICC_ReadCardSerial()) {
     // Serial.print(F("Reader "));
     // Serial.print(reader);
      // Show some details of the PICC (that is: the tag/card)
      //Serial.print(F(": Card UID:"));
      dump_byte_array(mfrc522[reader].uid.uidByte, mfrc522[reader].uid.size);
      //Serial.println();
      for(i = 0;i < 4;i++)
      {
       //Serial.print(mfrc522[reader].uid.uidByte[i],HEX);
       arry[i] =  mfrc522[reader].uid.uidByte[i];
      flg=1;
       //Serial.println(arry[i],HEX);
      } 

      for(i = 0;i < 4;i++)
             //Serial.print(arry[i],HEX);

              // Serial.println();

      //Serial.print(F("PICC type: "));
      MFRC522::PICC_Type piccType = mfrc522[reader].PICC_GetType(mfrc522[reader].uid.sak);
      //Serial.println(mfrc522[reader].PICC_GetTypeName(piccType));

      // Halt PICC
      mfrc522[reader].PICC_HaltA();
      // Stop encryption on PCD
      mfrc522[reader].PCD_StopCrypto1();
    } //if (mfrc522[reader].PICC_IsNewC
  } //for(uint8_t reader
} 

/**
 * Helper routine to dump a byte array as hex values to Serial.
 */
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);
  }
}

void Blink() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;
    if (ledState == LOW) {
      ledState = HIGH;
    } else {
      ledState = LOW;
    }
    digitalWrite(ledBlue, ledState);
  }
}
void Blink2() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval2) {
    previousMillis = currentMillis;
    if (ledState == LOW) {
      ledState = HIGH;
    } else {
      ledState = LOW;
    }
    digitalWrite(ledBlue, ledState);
  }
}