Źródło: Security Access using MFRC522 RFID Reader with Arduino
POŁĄCZENIE
| MFRC522 | ARDUINO UNO |
| RST | 9 |
| SDA | 10 |
| MOSI | 11 / ICSP-4 |
| MISO | 12 / ICSP-1 |
| SCK | 13 / ICSP-3 |
BIBLIOTEKA
- miguelbalboa/rfid – biblioteka
KOD
Lekko zmodyfikowałem kod ze strony dodając kody breloka i karty
/*
*
* All the resources for this project: http://randomnerdtutorials.com/
* Modified by Rui Santos
*
* 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.
#define UID1 "00 00 00 00" // wpisz kod uid breloka
#define UID2 "00 00 00 00" // wpisz kod uid karty
void setup()
{
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) == UID1) || (content.substring(1) == UID2)) //change here the UID of the card/cards that you want to give access
{
Serial.println("Authorized access");
Serial.println();
delay(3000);
}
else {
Serial.println(" Access denied");
delay(3000);
}
}