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      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