hi, i currently have a script that when a proximity fob is presented to the reader it displays the fob number (PIGPIO wiegand script on a raspberry pi)
i would like to make a python script so when i run it and then present the access fob it automatically puts the output into the next un-used column of the csv file.
can anyone help please
current script is as follows
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i would like to make a python script so when i run it and then present the access fob it automatically puts the output into the next un-used column of the csv file.
can anyone help please
current script is as follows
-------------------------
#!/usr/bin/env python
import pigpio, csv
FILE_TO_READ = '/home/pi/furniss_acu/database/database.csv'
CSV_ID_KEY = 'Number :'
class decoder:
"""
A class to read Wiegand codes of an arbitrary length.
The code length and value are returned.
EXAMPLE
#!/usr/bin/env python
import time
import pigpio
import wiegand
def callback(bits, code):
print("bits={} code={}".format(bits, code))
pi = pigpio.pi()
w = wiegand.decoder(pi, 14, 15, callback)
while True:
time.sleep(60)
w.cancel()
pi.stop()
"""
def __init__(self, pi, gpio_0, gpio_1, callback, bit_timeout=5):
"""
Instantiate with the pi, gpio for 0 (green wire), the gpio for 1
(white wire), the callback function, and the bit timeout in
milliseconds which indicates the end of a code.
The callback is passed the code length in bits and the value.
"""
self.pi = pi
self.gpio_0 = gpio_0
self.gpio_1 = gpio_1
self.callback = callback
self.bit_timeout = bit_timeout
self.in_code = False
self.pi.set_mode(gpio_0, pigpio.INPUT)
self.pi.set_mode(gpio_1, pigpio.INPUT)
self.pi.set_pull_up_down(gpio_0, pigpio.PUD_UP)
self.pi.set_pull_up_down(gpio_1, pigpio.PUD_UP)
self.cb_0 = self.pi.callback(gpio_0, pigpio.FALLING_EDGE, self._cb)
self.cb_1 = self.pi.callback(gpio_1, pigpio.FALLING_EDGE, self._cb)
def _cb(self, gpio, level, tick):
"""
Accumulate bits until both gpios 0 and 1 timeout.
"""
if level < pigpio.TIMEOUT:
if self.in_code == False:
self.bits = 1
self.num = 0
self.in_code = True
self.code_timeout = 0
self.pi.set_watchdog(self.gpio_0, self.bit_timeout)
self.pi.set_watchdog(self.gpio_1, self.bit_timeout)
else:
self.bits += 1
self.num = self.num << 1
if gpio == self.gpio_0:
self.code_timeout = self.code_timeout & 2 # clear gpio 0 timeout
else:
self.code_timeout = self.code_timeout & 1 # clear gpio 1 timeout
self.num = self.num | 1
else:
if self.in_code:
if gpio == self.gpio_0:
self.code_timeout = self.code_timeout | 1 # timeout gpio 0
else:
self.code_timeout = self.code_timeout | 2 # timeout gpio 1
if self.code_timeout == 3: # both gpios timed out
self.pi.set_watchdog(self.gpio_0, 0)
self.pi.set_watchdog(self.gpio_1, 0)
self.in_code = False
self.callback(self.bits, self.num)
def cancel(self):
"""
Cancel the Wiegand decoder.
"""
self.cb_0.cancel()
self.cb_1.cancel()
def readFile(filename):
data = []
with open(filename, 'r') as file:
reader = csv.DictReader(file)
data = [row for row in reader]
return data
def authenticateFromFile(id):
for row in readFile(FILE_TO_READ):
if CSV_ID_KEY in row and row[CSV_ID_KEY] == id:
return True
return False
if __name__ == "__main__":
import time
import RPi.GPIO as GPIO
import pigpio
import wiegand
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
def callback(bits, value):
if authenticateFromFile('{}'.format(value)):
print("Wiegand bits={} Card Number={}".format(bits, value))
file = open("/home/pi/ACU/www/events.txt", "w")
file.write("Last Access: Wiegand bits={}\n".format(bits))
file.write("\nCard value={}".format(value))
GPIO.setup(18,GPIO.OUT)
print("door released")
GPIO.output(18,GPIO.LOW)
time.sleep(5)
print("door secure")
GPIO.output(18, GPIO.HIGH)
else:
print("Access Denied = Wiegand bits={} Card Number={}".format(bits, value))
file = open("/home/pi/ACU/www/events.txt", "w")
file.write("Access Denied = Wiegand bits={} Card Number={}".format(bits, value))
pi = pigpio.pi()
w = wiegand.decoder(pi, 14, 15, callback)
while True:
time.sleep(60)
w.cancel()
pi.stop()Display posts from previous:Sort by
