1 #!/usr/bin/python 2 # Author: Zion Orent <zorent (at] 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 24 import time, sys, signal, atexit 25 import pyupm_zfm20 as upmZfm20 26 27 # Instantiate a ZFM20 Fingerprint reader on UART 0 28 myFingerprintSensor = upmZfm20.ZFM20(0) 29 30 31 ## Exit handlers ## 32 # This stops python from printing a stacktrace when you hit control-C 33 def SIGINTHandler(signum, frame): 34 raise SystemExit 35 36 # This function lets you run code on exit, 37 # including functions from myFingerprintSensor 38 def exitHandler(): 39 print "Exiting" 40 sys.exit(0) 41 42 # Register exit handlers 43 atexit.register(exitHandler) 44 signal.signal(signal.SIGINT, SIGINTHandler) 45 46 47 # make sure port is initialized properly. 57600 baud is the default. 48 if (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? 53 print "Total stored templates: %d" % myFingerprintSensor.getNumTemplates() 54 print " " 55 56 # now spin waiting for a fingerprint to successfully image 57 print "Waiting for finger print..." 58 59 while (myFingerprintSensor.generateImage() == upmZfm20.ZFM20.ERR_NO_FINGER): 60 pass 61 62 # in theory, we have an image 63 print "Image captured, converting..." 64 65 rv = myFingerprintSensor.image2Tz(1) 66 if (rv != upmZfm20.ZFM20.ERR_OK): 67 print "Image conversion failed with error code %d" % rv 68 sys.exit(1) 69 70 print "Image conversion succeeded." 71 print "Searching database..." 72 73 myid = upmZfm20.uint16Array(0) 74 myid.__setitem__(0, 0) 75 myscore = upmZfm20.uint16Array(0) 76 myscore.__setitem__(0, 0) 77 78 # we search for a print matching slot 1, where we stored our last 79 # converted fingerprint 80 rv = myFingerprintSensor.search(1, myid, myscore) 81 if (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 89 print "Fingerprint found!" 90 print "ID: %d, Score: %d" % (myid.__getitem__(0), myscore.__getitem__(0)) 91