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)
# This example demonstrates registering a fingerprint on the zfm20
# module. The procedure is as follows:
#
# 1. get an image, store it in characteristics buffer 1
# 2. get another image, store it in characteristics buffer 2
# 3. store the image, assuming the two fingerprints match
# first, we need to register our address and password
myFingerprintSensor.setPassword(upmZfm20.ZFM20_DEFAULT_PASSWORD)
myFingerprintSensor.setAddress(upmZfm20.ZFM20_DEFAULT_ADDRESS)
# now verify the password. If this fails, any other commands
# will be ignored, so we just bail.
if (myFingerprintSensor.verifyPassword()):
print "Password verified."
else:
print "Password verification failed."
sys.exit(1)
print " "
# get the first image
print "Place a finger on the sensor."
while (myFingerprintSensor.generateImage() != upmZfm20.ZFM20.ERR_OK):
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, remove finger."
time.sleep(1)
while (myFingerprintSensor.generateImage() != upmZfm20.ZFM20.ERR_NO_FINGER):
pass
print " "
print "Now place the same finger on the sensor."
while (myFingerprintSensor.generateImage() == upmZfm20.ZFM20.ERR_NO_FINGER):
pass
print "Image captured, converting..."
# save this one in slot 2
rv = myFingerprintSensor.image2Tz(2)
if (rv != upmZfm20.ZFM20.ERR_OK):
print "Image conversion failed with error code %d" % rv
sys.exit(1)
print "Image conversion succeeded, remove finger."
print " "
print "Storing fingerprint at id 1"
# create the model
rv = myFingerprintSensor.createModel()
if (rv != upmZfm20.ZFM20.ERR_OK):
if (rv == upmZfm20.ZFM20.ERR_FP_ENROLLMISMATCH):
print "Fingerprints did not match."
else:
print "createModel failed with error code %d" % rv
sys.exit(1)
# now store it, we hard code the id (second arg) to 1 here
rv = myFingerprintSensor.storeModel(1, 1)
if (rv != upmZfm20.ZFM20.ERR_OK):
print "storeModel failed with error code %d" % rv
sys.exit(1)
print " "
print "Fingerprint stored at id 1."
# 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.
import time, sys, signal, atexit
import pyupm_zfm20 as upmZfm20
# 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)
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))