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      1 /*jslint node:true, vars:true, bitwise:true, unparam:true */
      2 /*jshint unused:true */
      3 /*
      4 * Author: Zion Orent <zorent (at) ics.com>
      5 * Copyright (c) 2015 Intel Corporation.
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining
      8 * a copy of this software and associated documentation files (the
      9 * "Software"), to deal in the Software without restriction, including
     10 * without limitation the rights to use, copy, modify, merge, publish,
     11 * distribute, sublicense, and/or sell copies of the Software, and to
     12 * permit persons to whom the Software is furnished to do so, subject to
     13 * the following conditions:
     14 *
     15 * The above copyright notice and this permission notice shall be
     16 * included in all copies or substantial portions of the Software.
     17 *
     18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25 */
     26 var fingerprint_lib = require('jsupm_zfm20');
     27 
     28 // Instantiate a ZFM20 Fingerprint reader on UART 0
     29 var myFingerprintSensor = new fingerprint_lib.ZFM20(0);
     30 
     31 // make sure port is initialized properly.  57600 baud is the default.
     32 if (!myFingerprintSensor.setupTty(fingerprint_lib.int_B57600))
     33 {
     34 	console.log("Failed to setup tty port parameters");
     35 	process.exit(1);
     36 }
     37 
     38 // how many valid stored templates (fingerprints) do we have?
     39 console.log("Total stored templates: " + myFingerprintSensor.getNumTemplates());
     40 console.log(" ");
     41 
     42 // now spin waiting for a fingerprint to successfully image
     43 console.log("Waiting for finger print...");
     44 
     45 while (myFingerprintSensor.generateImage() == fingerprint_lib.ZFM20.ERR_NO_FINGER)
     46 	;
     47 
     48 // in theory, we have an image
     49 console.log("Image captured, converting...");
     50 
     51 var rv = myFingerprintSensor.image2Tz(1);
     52 if (rv != fingerprint_lib.ZFM20.ERR_OK)
     53 {
     54 	console.log("Image conversion failed with error code " + rv);
     55 	process.exit(1);
     56 }
     57 
     58 console.log("Image conversion succeeded.");
     59 console.log("Searching database...");
     60 
     61 var myid = new fingerprint_lib.uint16Array(0);
     62 myid.setitem(0, 0);
     63 var myscore = new fingerprint_lib.uint16Array(0);
     64 myscore.setitem(0, 0);
     65 
     66 // we search for a print matching slot 1, where we stored our last
     67 // converted fingerprint
     68 rv = myFingerprintSensor.search(1, myid, myscore)
     69 if (rv != fingerprint_lib.ZFM20.ERR_OK)
     70 {
     71 	if (rv == fingerprint_lib.ZFM20.ERR_FP_NOTFOUND)
     72 	{
     73 		console.log("Finger Print not found");
     74 		process.exit(0);
     75 	}
     76 	else
     77 	{
     78 		console.log("Search failed with error code " + rv);
     79 		process.exit(1);
     80 	}
     81 }
     82 
     83 console.log("Fingerprint found!");
     84 console.log("ID: " + myid.getitem(0) + ", Score: " + myscore.getitem(0));
     85 
     86 
     87 // Print message when exiting
     88 function exit()
     89 {
     90 	myFingerprintSensor = null;
     91 	fingerprint_lib.cleanUp();
     92 	fingerprint_lib = null;
     93 	console.log("Exiting");
     94 	process.exit(0);
     95 }
     96 process.on('SIGINT', exit);
     97 process.on('exit', exit);
     98