upm/examples/c++/zfm20.cxx

/*
 * 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 "zfm20.hpp"

using namespace std;
using namespace upm;

int
main(int argc, char** argv)
{
    //! [Interesting]
    // Instantiate a ZFM20 Fingerprint reader on UART 0

    upm::ZFM20 fp(0);

    // make sure port is initialized properly.  57600 baud is the default.
    if (!fp.setupTty(57600)) {
        cerr << "Failed to setup tty port parameters" << endl;
        return 1;
    }

    // first, set the default password and address
    fp.setPassword(ZFM20_DEFAULT_PASSWORD);
    fp.setAddress(ZFM20_DEFAULT_ADDRESS);

    // now verify the password.  If this fails, any other commands
    // will be ignored, so we just bail.
    if (fp.verifyPassword()) {
        cout << "Password verified." << endl;
    } else {
        cerr << "Password verification failed." << endl;
        return 1;
    }

    // how many valid stored templates (fingerprints) do we have?
    cout << "Total stored templates: " << fp.getNumTemplates() << endl;
    cout << endl;

    // now spin waiting for a fingerprint to successfully image
    cout << "Waiting for finger print..." << endl;

    while (fp.generateImage() == ZFM20::ERR_NO_FINGER)
        ;

    // in theory, we have an image
    cout << "Image captured, converting..." << endl;

    uint8_t rv;
    if ((rv = fp.image2Tz(1)) != ZFM20::ERR_OK) {
        cerr << "Image conversion failed with error code " << int(rv) << endl;
        return 1;
    }

    cout << "Image conversion succeeded." << endl;
    cout << "Searching database..." << endl;

    uint16_t id = 0;
    uint16_t score = 0;

    // we search for a print matching slot 1, where we shored our last
    // converted fingerprint
    if ((rv = fp.search(1, id, score)) != ZFM20::ERR_OK) {
        if (rv == ZFM20::ERR_FP_NOTFOUND) {
            cout << "Finger Print not found" << endl;
            return 0;
        } else {
            cerr << "Search failed with error code " << int(rv) << endl;
            return 1;
        }
    }

    cout << "Fingerprint found!" << endl;
    cout << "ID: " << int(id) << ", Score: " << int(score) << endl;

    //! [Interesting]

    return 0;
}