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/*
*
* All the resources for this project: https://lunite.net
*
* Created by FILIPEFLOP
*
*/
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
const int ledOk = 6; // the number of the LED pin
const int ledError = 7; // the number of the LED pin
void setup()
{
pinMode(ledError, OUTPUT);
pinMode(ledOk, OUTPUT);
Serial.begin(9600); // Initiate a serial communication
SPI.begin(); // Initiate SPI bus
mfrc522.PCD_Init(); // Initiate MFRC522
Serial.println("Approximate your card to the reader...");
Serial.println();
}
void loop()
{
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
//Show UID on serial monitor
Serial.print("UID tag :");
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(mfrc522.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message: ");
content.toUpperCase();
if (content.substring(1) == "53 AC DD 27") //change here the UID of the card/cards that you want to give access
{
Serial.println("Authorized access");
Serial.println();
digitalWrite(ledOk, HIGH);
delay(3000);
digitalWrite(ledOk, LOW);
}
else {
Serial.println(" Access denied");
digitalWrite(ledError, HIGH);
delay(3000);
digitalWrite(ledError, LOW);
}
}
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