Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara mengakses RFID Reader atau NFC / Mifare card PN532 menggunakan Arduino, pada penjelasan kali ini saya hanya menjelaskan bagaimana cara mengaksesnya saja dan bagaimana program yang tepat untuk membuat alatnya. jadi sistem kerjanya yaitu ada mifare card atau NFC yang mana akan dibaca datanya oleh PN532 yang kemudian datanya akan dikirm ke komputer melalui serial port. berikut adalah skema dan programnya.
#include <Wire.h>
//#include <Adafruit_NFCShield_I2C.h>
#include <SPI.h>
#include <Adafruit_PN532.h>
// If using the breakout with SPI, define the pins for SPI communication.
#define PN532_SCK (2)
#define PN532_MOSI (3)
#define PN532_SS (4)
#define PN532_MISO (5)
#define IRQ (2)
#define RESET (3)
Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS);
//Adafruit_NFCShield_I2C nfc(IRQ, RESET);
void setup(void) {
Serial.begin(115200);
nfc.begin();
uint32_t versiondata = nfc.getFirmwareVersion();
if (! versiondata) {
Serial.print(">Didn't find PN53x board, please close and open serial monitor. If problem still exist please check your wiring");
while (1); // halt
}
// Got ok data, print it out!
Serial.print(">Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX);
Serial.print(">Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC);
Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC);
// Set the max number of retry attempts to read from a card
// This prevents us from waiting forever for a card, which is
// the default behaviour of the PN532.
//nfc.setPassiveActivationRetries(0xFF);
// configure board to read RFID tags
nfc.SAMConfig();
//Serial.println("Waiting for an ISO14443A card");
}
void loop(void) {
boolean success;
uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
// Wait for an ISO14443A type cards (Mifare, etc.). When one is found
// 'uid' will be populated with the UID, and uidLength will indicate
// if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
if (success) {
//Serial.println("Found a card!");
//Serial.print("UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes");
//Serial.print("UID Value: ");
nfc.PrintHex(uid, uidLength);
uint8_t keya[6] = { 0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7 };
success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya);
//if (success)
//{
// Serial.println("Authentication work");
//}
//uint8_t data[16];
uint8_t data[16];
success = nfc.mifareclassic_ReadDataBlock(4, data);
//success = nfc.mifareultralight_ReadPage (32, data);
nfc.PrintHexChar(data, 16);
// Wait 1 second before continuing
delay(1000);
}
}
