#!/usr/bin/env python # Author: Zion Orent # 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. from __future__ import print_function import time, sys, signal, atexit from upm import pyupm_zfm20 as upmZfm20 def main(): # Instantiate a ZFM20 Fingerprint reader on UART 0 myFingerprintSensor = upmZfm20.ZFM20(0) ## Exit handlers ## # This stops python from printing a stacktrace when you hit control-C def SIGINTHandler(signum, frame): raise SystemExit # This function lets you run code on exit, # including functions from myFingerprintSensor def exitHandler(): print("Exiting") sys.exit(0) # Register exit handlers atexit.register(exitHandler) signal.signal(signal.SIGINT, SIGINTHandler) # make sure port is initialized properly. 57600 baud is the default. if (not myFingerprintSensor.setupTty(upmZfm20.cvar.int_B57600)): print("Failed to setup tty port parameters") sys.exit(1) # how many valid stored templates (fingerprints) do we have? print("Total stored templates: %d" % myFingerprintSensor.getNumTemplates()) print(" ") # now spin waiting for a fingerprint to successfully image print("Waiting for finger print...") while (myFingerprintSensor.generateImage() == upmZfm20.ZFM20.ERR_NO_FINGER): pass # in theory, we have an image print("Image captured, converting...") rv = myFingerprintSensor.image2Tz(1) if (rv != upmZfm20.ZFM20.ERR_OK): print("Image conversion failed with error code %d" % rv) sys.exit(1) print("Image conversion succeeded.") print("Searching database...") myid = upmZfm20.uint16Array(0) myid.__setitem__(0, 0) myscore = upmZfm20.uint16Array(0) myscore.__setitem__(0, 0) # we search for a print matching slot 1, where we stored our last # converted fingerprint rv = myFingerprintSensor.search(1, myid, myscore) if (rv != upmZfm20.ZFM20.ERR_OK): if (rv == upmZfm20.ZFM20.ERR_FP_NOTFOUND): print("Finger Print not found") sys.exit(0) else: print("Search failed with error code %d" % rv) sys.exit(1) print("Fingerprint found!") print("ID: %d, Score: %d" % (myid.__getitem__(0), myscore.__getitem__(0))) if __name__ == '__main__': main()