class FingerPrintScan:
def __init__(self):
self.f = PyFingerprint('/dev/ttyUSB0', 57600, 0xFFFFFFFF, 0x00000000)
if (self.f.verifyPassword() == False):
raise ValueError('The given fingerprint sensor password is wrong!')
print('Currently used templates: ' + str(self.f.getTemplateCount()) +
'/' + str(self.f.getStorageCapacity()))
self.current_buffer = 0x01
def scan_fingerprint(self):
while (self.f.readImage() == False):
pass
def is_fingerprint_exist(self):
result = self.f.searchTemplate()
positionNumber = result[0]
print(positionNumber)
return positionNumber >= 0
def get_template_id(self):
result = self.f.searchTemplate()
positionNumber = result[0]
print(positionNumber)
return positionNumber
def save_fingerprint(self):
self.f.createTemplate()
return self.f.storeTemplate()
def clear_all_fingerprint(self):
for i in range(self.f.getTemplateCount()):
if self.f.deleteTemplate(i):
print('Template deleted - ' + str(i))
def clear_fingerprint(self, start, end):
for i in range(start, end):
if self.f.deleteTemplate(i):
print('Template deleted - ' + str(i))
def save_to_char_buffer(self):
self.f.convertImage(self.current_buffer)
self.current_buffer = self.current_buffer + 1
def save_as_image(self, file_name):
imageDestination = os.getcwd() + '/' + file_name + '.png'
self.f.downloadImage(imageDestination)
class Fingerprint:
def __init__(self):
# Set fingerprint sensor to ttyUSB0 with buadrate 57600
self.fingerprintSensor = PyFingerprint('/dev/ttyUSB0', 57600,
0xFFFFFFFF, 0x00000000)
# Flag for checking sensor available
self.fingerprintSensorValid = False
self.fingerprintTemplateValid = False
self.fingerprintCharValid = False
self.verify()
def verify(self):
# Verify fingerprintsensor
try:
if (self.fingerprintSensor.verifyPassword() is False):
print('Fingerprint password is wrong!')
self.fingerprintSensorValid = True
print('Fingerprint sensor is available!')
except Exception as e:
print('Something wrong : ' + str(e))
print('-' * LINEWIDTH)
def createTemplate(self):
if (self.fingerprintSensorValid):
try:
time.sleep(2)
print('Waiting for finger...')
# wait for finger
while (self.fingerprintSensor.readImage() is False):
pass
print('Finger read.')
print('Start convert fingerprint image...')
self.fingerprintSensor.convertImage(0x01)
print('Converted.')
time.sleep(2)
# double check
# waiting for finger remove
while (self.fingerprintSensor.readImage()):
pass
print('Waiting for finger...')
# wait for finger
while (self.fingerprintSensor.readImage() is False):
pass
print('Finger read.')
print('Start convert fingerprint image...')
self.fingerprintSensor.convertImage(0x02)
print('Converted.')
print('Create fingerprint template...')
self.fingerprintSensor.createTemplate()
print('Created.')
print('Download fingerprint template...')
self.fingerprintTemplate = self.fingerprintSensor.downloadCharacteristics(
)
self.fingerprintTemplateValid = True
except Exception as e:
print('Something wrong : ' + str(e))
print('-' * LINEWIDTH)
def scanOneTime(self):
if (self.fingerprintSensorValid):
try:
self.fingerprintCharValid = False
print('Waiting for finger...')
# wait for finger
startTime = time.time()
timeout = False
while (self.fingerprintSensor.readImage() is False
and timeout is False):
if time.time() - startTime > 20:
timeout = True
print('Finger read.')
# print('Start convert fingerprint image...')
self.fingerprintSensor.convertImage(0x01)
# print('Converted.')
# print('Download fingerprint characteristic...')
self.fingerprintChar = self.fingerprintSensor.downloadCharacteristics(
)
self.fingerprintCharValid = True
self.fingerptintCompare = False
self.fingerptintCompareValid = False
self.userID = 0
except Exception as e:
print('Something wrong : ' + str(e))
print('-' * LINEWIDTH)
def fetchAllFingerprint(self):
# fetch all fingerprint from web database
fetchEndPoint = "htt]://203.154.59.215:8080/api/data/fingerprint"
res = urllib2.urlopen(fetchEndPoint)
content = res.content
pass
def compare(self):
if self.fingerprintCharValid:
# upload template to address 0x02
self.fingerprintSensor.uploadCharacteristics(
0x02, self.fingerprintTemplate)
score = self.fingerprintSensor.compareCharacteristics()
if score > 0:
self.fingerptintCompare = True
self.userID = 1111111111111
self.fingerptintCompareValid = True
def downloadImage(self):
if (self.fingerprintSensorValid):
try:
print('Waiting for finger...')
# wait for finger
while (self.fingerprintSensor.readImage() is False):
pass
# save fingerprint image
print('Saving fingerprint image...')
self.fingerprintSensor.downloadImage(
'/home/pi/healthios/img/fingerprint_img.png')
print('Fingerprint saved!')
except Exception as e:
print('Something wrong : ' + str(e))
print('-' * LINEWIDTH)
raise ValueError('The given fingerprint sensor password is wrong!')
except Exception as e:
print('The fingerprint sensor could not be initialized!')
print('Exception message: ' + str(e))
exit(1)
## Gets some sensor information
print('Currently used templates: ' + str(f.getTemplateCount()) + '/' +
str(f.getStorageCapacity()))
## Tries to read image and download it
try:
print('Waiting for finger...')
## Wait that finger is read
while (f.readImage() == False):
pass
print('Downloading image (this take a while)...')
imageDestination = tempfile.gettempdir() + '/fingerprint.bmp'
f.downloadImage(imageDestination)
print('The image was saved to "' + imageDestination + '".')
except Exception as e:
print('Operation failed!')
print('Exception message: ' + str(e))
exit(1)
