/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2015 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <iostream>
#include <signal.h>
#include <stdio.h>
#include <string.h>

#include "pn532.hpp"
#include "upm_utilities.h"

using namespace std;

bool shouldRun = true;

void
sig_handler(int signo)
{
    if (signo == SIGINT)
        shouldRun = false;
}

int
main(int argc, char** argv)
{
    signal(SIGINT, sig_handler);

    //! [Interesting]
    // Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
    // IRQ, and gpio 2 for the reset pin.

    upm::PN532 nfc(3, 2);

    if (!nfc.init())
        cerr << "init() failed" << endl;

    uint32_t vers = nfc.getFirmwareVersion();

    if (vers)
        printf("Got firmware version: 0x%08x\n", vers);
    else {
        printf("Could not identify PN532\n");
        return 1;
    }

    // Now scan and identify any cards that come in range (1 for now)

    // Retry forever
    nfc.setPassiveActivationRetries(0xff);

    nfc.SAMConfig();

    uint8_t uidSize;
    uint8_t uid[7];

    while (shouldRun) {
        memset(uid, 0, 7);
        if (nfc.readPassiveTargetID(nfc.BAUD_MIFARE_ISO14443A, uid, &uidSize, 2000)) {
            // found a card
            printf("Found a card: UID len %d\n", uidSize);
            printf("UID: ");
            for (int i = 0; i < uidSize; i++)
                printf("%02x ", uid[i]);
            printf("\n");
            printf("SAK: 0x%02x\n", nfc.getSAK());
            printf("ATQA: 0x%04x\n\n", nfc.getATQA());
            upm_delay(1);
        } else {
            printf("Waiting for a card...\n");
        }
    }

    //! [Interesting]

    return 0;
}