1#!/usr/bin/python
2# Author: Zion Orent <zorent@ics.com>
3# Copyright (c) 2015 Intel Corporation.
4#
5# Permission is hereby granted, free of charge, to any person obtaining
6# a copy of this software and associated documentation files (the
7# "Software"), to deal in the Software without restriction, including
8# without limitation the rights to use, copy, modify, merge, publish,
9# distribute, sublicense, and/or sell copies of the Software, and to
10# permit persons to whom the Software is furnished to do so, subject to
11# the following conditions:
12#
13# The above copyright notice and this permission notice shall be
14# included in all copies or substantial portions of the Software.
15#
16# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23
24import time, sys, signal, atexit
25import pyupm_zfm20 as upmZfm20
26
27# Instantiate a ZFM20 Fingerprint reader on UART 0
28myFingerprintSensor = upmZfm20.ZFM20(0)
29
30
31## Exit handlers ##
32# This stops python from printing a stacktrace when you hit control-C
33def SIGINTHandler(signum, frame):
34	raise SystemExit
35
36# This function lets you run code on exit,
37# including functions from myFingerprintSensor
38def exitHandler():
39	print "Exiting"
40	sys.exit(0)
41
42# Register exit handlers
43atexit.register(exitHandler)
44signal.signal(signal.SIGINT, SIGINTHandler)
45
46
47# make sure port is initialized properly.  57600 baud is the default.
48if (not myFingerprintSensor.setupTty(upmZfm20.cvar.int_B57600)):
49	print "Failed to setup tty port parameters"
50	sys.exit(1)
51
52# how many valid stored templates (fingerprints) do we have?
53print "Total stored templates: %d" % myFingerprintSensor.getNumTemplates()
54print " "
55
56# now spin waiting for a fingerprint to successfully image
57print "Waiting for finger print..."
58
59while (myFingerprintSensor.generateImage() == upmZfm20.ZFM20.ERR_NO_FINGER):
60	pass
61
62# in theory, we have an image
63print "Image captured, converting..."
64
65rv = myFingerprintSensor.image2Tz(1)
66if (rv != upmZfm20.ZFM20.ERR_OK):
67	print "Image conversion failed with error code %d" % rv
68	sys.exit(1)
69
70print "Image conversion succeeded."
71print "Searching database..."
72
73myid = upmZfm20.uint16Array(0)
74myid.__setitem__(0, 0)
75myscore = upmZfm20.uint16Array(0)
76myscore.__setitem__(0, 0)
77
78# we search for a print matching slot 1, where we stored our last
79# converted fingerprint
80rv = myFingerprintSensor.search(1, myid, myscore)
81if (rv != upmZfm20.ZFM20.ERR_OK):
82	if (rv == upmZfm20.ZFM20.ERR_FP_NOTFOUND):
83		print "Finger Print not found"
84		sys.exit(0)
85	else:
86		print "Search failed with error code %d" % rv
87		sys.exit(1)
88
89print "Fingerprint found!"
90print "ID: %d, Score: %d" % (myid.__getitem__(0), myscore.__getitem__(0))
91