PN532_HID.ino

#include <PN532.h>
#include "Keyboard.h"

//#define SCK 13
//#define MOSI 11
//#define SS 10
//#define MISO 12

#define SCK 15
#define MOSI 16
#define SS 10
#define MISO 14

PN532 nfc(SCK, MISO, MOSI, SS);

unsigned long previousMillis = 0; 
uint32_t count;

void setup(void) {
    Serial.begin(115200);
    
    Keyboard.begin();
    nfc.begin();

    uint32_t versiondata = nfc.getFirmwareVersion();
    if (! versiondata) {
        while (1){
          Serial.println("Didn't find PN53x board");
          delay(1000);
        }

    }
    // 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);
//    Serial.print("Supports "); Serial.println(versiondata & 0xFF, HEX);

    // configure board to read RFID tags and cards
    nfc.SAMConfig();
}



void loop(void) {
    uint32_t id;
    
    // look for MiFare type cards

    unsigned long currentMillis = millis();

    if (currentMillis - previousMillis >= 20) {
        
        id = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A);
     
        if (id != 0) {
            //Serial.println();
            Serial.print(count);Serial.print(" Read card #"); Serial.println(id);
            Keyboard.print("[");Keyboard.print(id);Keyboard.print("]");
            previousMillis = currentMillis;
            count++;
        }
    }
    
}