Simple test¶
Ensure your device works with this simple test.
examples/fingerprint_simpletest.py¶
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT
import time
import board
import busio
from digitalio import DigitalInOut, Direction
import adafruit_fingerprint
led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT
uart = busio.UART(board.TX, board.RX, baudrate=57600)
# If using with a computer such as Linux/RaspberryPi, Mac, Windows with USB/serial converter:
# import serial
# uart = serial.Serial("/dev/ttyUSB0", baudrate=57600, timeout=1)
# If using with Linux/Raspberry Pi and hardware UART:
# import serial
# uart = serial.Serial("/dev/ttyS0", baudrate=57600, timeout=1)
finger = adafruit_fingerprint.Adafruit_Fingerprint(uart)
##################################################
def get_fingerprint():
"""Get a finger print image, template it, and see if it matches!"""
print("Waiting for image...")
while finger.get_image() != adafruit_fingerprint.OK:
pass
print("Templating...")
if finger.image_2_tz(1) != adafruit_fingerprint.OK:
return False
print("Searching...")
if finger.finger_search() != adafruit_fingerprint.OK:
return False
return True
# pylint: disable=too-many-branches
def get_fingerprint_detail():
"""Get a finger print image, template it, and see if it matches!
This time, print out each error instead of just returning on failure"""
print("Getting image...", end="", flush=True)
i = finger.get_image()
if i == adafruit_fingerprint.OK:
print("Image taken")
else:
if i == adafruit_fingerprint.NOFINGER:
print("No finger detected")
elif i == adafruit_fingerprint.IMAGEFAIL:
print("Imaging error")
else:
print("Other error")
return False
print("Templating...", end="", flush=True)
i = finger.image_2_tz(1)
if i == adafruit_fingerprint.OK:
print("Templated")
else:
if i == adafruit_fingerprint.IMAGEMESS:
print("Image too messy")
elif i == adafruit_fingerprint.FEATUREFAIL:
print("Could not identify features")
elif i == adafruit_fingerprint.INVALIDIMAGE:
print("Image invalid")
else:
print("Other error")
return False
print("Searching...", end="", flush=True)
i = finger.finger_fast_search()
# pylint: disable=no-else-return
# This block needs to be refactored when it can be tested.
if i == adafruit_fingerprint.OK:
print("Found fingerprint!")
return True
else:
if i == adafruit_fingerprint.NOTFOUND:
print("No match found")
else:
print("Other error")
return False
# pylint: disable=too-many-statements
def enroll_finger(location):
"""Take a 2 finger images and template it, then store in 'location'"""
for fingerimg in range(1, 3):
if fingerimg == 1:
print("Place finger on sensor...", end="", flush=True)
else:
print("Place same finger again...", end="", flush=True)
while True:
i = finger.get_image()
if i == adafruit_fingerprint.OK:
print("Image taken")
break
if i == adafruit_fingerprint.NOFINGER:
print(".", end="", flush=True)
elif i == adafruit_fingerprint.IMAGEFAIL:
print("Imaging error")
return False
else:
print("Other error")
return False
print("Templating...", end="", flush=True)
i = finger.image_2_tz(fingerimg)
if i == adafruit_fingerprint.OK:
print("Templated")
else:
if i == adafruit_fingerprint.IMAGEMESS:
print("Image too messy")
elif i == adafruit_fingerprint.FEATUREFAIL:
print("Could not identify features")
elif i == adafruit_fingerprint.INVALIDIMAGE:
print("Image invalid")
else:
print("Other error")
return False
if fingerimg == 1:
print("Remove finger")
time.sleep(1)
while i != adafruit_fingerprint.NOFINGER:
i = finger.get_image()
print("Creating model...", end="", flush=True)
i = finger.create_model()
if i == adafruit_fingerprint.OK:
print("Created")
else:
if i == adafruit_fingerprint.ENROLLMISMATCH:
print("Prints did not match")
else:
print("Other error")
return False
print("Storing model #%d..." % location, end="", flush=True)
i = finger.store_model(location)
if i == adafruit_fingerprint.OK:
print("Stored")
else:
if i == adafruit_fingerprint.BADLOCATION:
print("Bad storage location")
elif i == adafruit_fingerprint.FLASHERR:
print("Flash storage error")
else:
print("Other error")
return False
return True
##################################################
def get_num():
"""Use input() to get a valid number from 1 to 127. Retry till success!"""
i = 0
while (i > 127) or (i < 1):
try:
i = int(input("Enter ID # from 1-127: "))
except ValueError:
pass
return i
while True:
print("----------------")
if finger.read_templates() != adafruit_fingerprint.OK:
raise RuntimeError("Failed to read templates")
print("Fingerprint templates:", finger.templates)
print("e) enroll print")
print("f) find print")
print("d) delete print")
print("----------------")
c = input("> ")
if c == "e":
enroll_finger(get_num())
if c == "f":
if get_fingerprint():
print("Detected #", finger.finger_id, "with confidence", finger.confidence)
else:
print("Finger not found")
if c == "d":
if finger.delete_model(get_num()) == adafruit_fingerprint.OK:
print("Deleted!")
else:
print("Failed to delete")
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