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italia / cie-PN532

Arduino library for SPI and I2C access to the NFC chip in the Italian Electronic Identity Card (CIE)
BSD 3-Clause "New" or "Revised" License
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arduino cie nfc

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cie-PN532

Arduino library for SPI access to the PN532 NFC chip in the Italian Electronic Identity Card (CIE).

Warning

Online resources

Online documentation Demonstration video

Prerequisites

This library depends upon a modified version of the Adafruit_PN532 library which you can obtain from this GitHub Repository.

https://github.com/BrightSoul/Adafruit-PN532

You must install the Adafruit_PN532 and cie_PN532 in your Arduino libraries directory. Plese follow the instructions from the Arduino guide.

https://www.arduino.cc/en/Guide/Libraries

Wiring PN532 breakout to the Arduino Uno for SPI communication

At present, just the SPI connection is supported. The examples provided will work with this wiring.

images/pn532-wiring-spi.png

This wiring is also described in detail on this page at the Adafruit website.

https://learn.adafruit.com/adafruit-pn532-rfid-nfc/breakout-wiring

Getting started

Create a new arduino project and set it up like this:

//Include some libraries
#include <Wire.h>
#include <SPI.h>
#include <cie_PN532.h>

//Use the cie_PN532 with the typical wiring, as pointed out above
cie_PN532 cie();

void setup(void) {
  #ifndef ESP8266
    while (!Serial); // for Leonardo/Micro/Zero
  #endif
  Serial.begin(115200);
  //Initialize the PN532 breakout board
  cie.begin();
}

Then, in your loop, wait for a card then read its ID_Servizi (a low-security unique identifier)

void loop(void) {
  //Let's see if a card is present
  bool cardDetected = cie.detectCard();
  if (!cardDetected) {
    //No card present, we wait for one
    delay(100);
    return;
  }

  //Good! A card is present, let's read the ID!
  word bufferLength = EF_ID_SERVIZI_LENGTH;
  byte buffer[EF_ID_SERVIZI_LENGTH];

  if (!cie.read_EF_ID_Servizi(buffer, &bufferLength)) {
    Serial.print(F("Error reading EF.ID_SERVIZI"));
    delay(1000);
    return;
  }

  //We were able to read the ID_Servizi, print it out!
  Serial.print(F("EF.ID_Servizi: "));
  cie.printHex(buffer, bufferLength);
}

More examples

This library comes with an examples directory. You can load and run examples from the Arduino IDE by clicking the File menu -> Examples -> cie 532.

Useful links