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This driver implements support for the ZFM20 fingerprint module. It was tested on a Grove Fingerprint Sensor. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Zion Orent <zorent@ics.com> Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>
91 lines
3.0 KiB
Python
91 lines
3.0 KiB
Python
#!/usr/bin/python
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# Author: Zion Orent <zorent@ics.com>
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# Copyright (c) 2015 Intel Corporation.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import time, sys, signal, atexit
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import pyupm_zfm20 as upmZfm20
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# Instantiate a ZFM20 Fingerprint reader on UART 0
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myFingerprintSensor = upmZfm20.ZFM20(0)
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## Exit handlers ##
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# This stops python from printing a stacktrace when you hit control-C
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def SIGINTHandler(signum, frame):
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raise SystemExit
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# This function lets you run code on exit,
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# including functions from myFingerprintSensor
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def exitHandler():
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print "Exiting"
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sys.exit(0)
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# Register exit handlers
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atexit.register(exitHandler)
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signal.signal(signal.SIGINT, SIGINTHandler)
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# make sure port is initialized properly. 57600 baud is the default.
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if (not myFingerprintSensor.setupTty(upmZfm20.cvar.int_B57600)):
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print "Failed to setup tty port parameters"
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sys.exit(1)
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# how many valid stored templates (fingerprints) do we have?
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print "Total stored templates: %d" % myFingerprintSensor.getNumTemplates()
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print " "
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# now spin waiting for a fingerprint to successfully image
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print "Waiting for finger print..."
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while (myFingerprintSensor.generateImage() == upmZfm20.ZFM20.ERR_NO_FINGER):
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pass
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# in theory, we have an image
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print "Image captured, converting..."
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rv = myFingerprintSensor.image2Tz(1)
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if (rv != upmZfm20.ZFM20.ERR_OK):
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print "Image conversion failed with error code %d" % rv
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sys.exit(1)
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print "Image conversion succeeded."
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print "Searching database..."
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myid = upmZfm20.uint16Array(0)
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myid.__setitem__(0, 0)
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myscore = upmZfm20.uint16Array(0)
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myscore.__setitem__(0, 0)
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# we search for a print matching slot 1, where we stored our last
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# converted fingerprint
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rv = myFingerprintSensor.search(1, myid, myscore)
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if (rv != upmZfm20.ZFM20.ERR_OK):
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if (rv == upmZfm20.ZFM20.ERR_FP_NOTFOUND):
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print "Finger Print not found"
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sys.exit(0)
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else:
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print "Search failed with error code %d" % rv
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sys.exit(1)
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print "Fingerprint found!"
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print "ID: %d, Score: %d" % (myid.__getitem__(0), myscore.__getitem__(0))
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