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main.py
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main.py
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from time import sleep
from kivy.app import App
from kivy.app import Builder
from kivy.properties import StringProperty
from kivy.properties import ObjectProperty
from kivy.properties import BooleanProperty
from kivy.properties import NumericProperty
from kivy.uix.button import Button
from kivy.event import EventDispatcher
from kivy.logger import Logger
from kivy.clock import Clock, mainthread
from kivy.config import ConfigParser
from kivy.network.urlrequest import UrlRequest
from kivy.uix.screenmanager import ScreenManager, Screen
# Phidget specific imports
from Phidgets.PhidgetException import PhidgetErrorCodes, PhidgetException
from Phidgets.Events.Events import AttachEventArgs, DetachEventArgs, ErrorEventArgs, OutputChangeEventArgs, TagEventArgs
from Phidgets.Devices.RFID import RFID, RFIDTagProtocol
from Phidgets.Phidget import PhidgetLogLevel
from kivy.properties import NumericProperty
from kivy.lang import Builder
Builder.load_string('''
#:import random random.random
#:import SlideTransition kivy.uix.screenmanager.SlideTransition
#:import SwapTransition kivy.uix.screenmanager.SwapTransition
#:import WipeTransition kivy.uix.screenmanager.WipeTransition
#:import FadeTransition kivy.uix.screenmanager.FadeTransition
#:import RiseInTransition kivy.uix.screenmanager.RiseInTransition
#:import FallOutTransition kivy.uix.screenmanager.FallOutTransition
#:import NoTransition kivy.uix.screenmanager.NoTransition
<CustomScreen>:
hue: random()
current_user: root.current_user
canvas:
Color:
hsv: self.hue, .5, .3
Rectangle:
size: self.size
Label:
font_size: 42
text: root.name
Button:
text: 'Next screen'
size_hint: None, None
pos_hint: {'right': 1}
size: 150, 50
on_release: root.manager.current = root.manager.next()
Button:
text: 'Previous screen'
size_hint: None, None
size: 150, 50
on_release: root.manager.current = root.manager.previous()
''')
class CustomScreen(Screen):
hue = NumericProperty(0)
tag = StringProperty(force_dispatch=True)
def on_tag(self, instance, value):
Logger.warning("Screen got a new RFID tag: {}".format(value))
class UserManager(EventDispatcher):
''' Manage users on the Monitor '''
# todo: do something based on the current screen, maybe stop a timer? e.g. hold screen
tag_gained = ObjectProperty(force_dispatch=True) # rfid tag id e.g., 023af7dd
current_user = StringProperty() # tag id of currently logged in user.
waiting_for_logon = BooleanProperty()
waiting_for_logoff = BooleanProperty()
request_error = BooleanProperty()
employee = ObjectProperty()
def __init__(self):
super(UserManager, self).__init__()
self.waiting_for_logoff = False
self.waiting_for_logon = False
self.current_user = ''
self.request_error = False
self.employee = None
# self.employee = Employee()
self.app = ObjectProperty()
def on_tag_gained(self, instance, value):
valid_card = self.validate_card(value)
if valid_card is False:
Logger.warn('User Manager: someone attempted to access the system with an invalid card.')
else:
Logger.info('User Manager: the tag [{}] was valid.'.format(value))
# self.app.root.current_screen.tag = value
self.app.last_gained_tag = self.employee
def validate_card(self, rfid_tag):
Logger.info('User Manager: validate_card with rfid_tag: {}'.format(rfid_tag))
self.app = App.get_running_app()
headers = {
'Accept': 'application/json',
'Content-type': 'application/json',
'Cache-Control': 'no-cache',
'Authorization': 'Token ' + self.app.config.get('Software', 'license key')
}
req = UrlRequest('http://{}/api/1.0/employees/?format=json&rfid_tag={}'.format(
self.app.config.get('Network', 'server fqdn'), rfid_tag),
on_success=self.url_request_on_success,
on_error=self.url_request_on_error,
on_failure=self.url_request_on_failure,
req_headers=headers)
# don't use wait, but maximum 10s timeout
for i in range(50):
Clock.tick()
sleep(.5)
if req.is_finished:
break
# A valid tag will have an 'id' key in its data.
if 'id' in self.employee:
return True # valid API response from server
else:
self.employee = []
return False # invalid API response sent by server
def url_request_on_success(self, *args):
Logger.info('User Manager: url_request_on_success')
self.request_error = False
if args[1]['count'] is 1:
self.employee = args[1]['results'][0] # get the guts of the result (i.e., the employee record)
else:
self.employee = []
Logger.debug('User Manager: Invalid response from server: {}'.format(args[1]))
def url_request_on_error(self, *args):
self.request_error = True
Logger.warning('User Manager: url_request_on_error')
for arg in args:
print repr(arg)
def url_request_on_failure(self, *args):
Logger.warning('User Manager: url_request_on_error')
self.request_error = True
for arg in args:
print repr(arg)
class Reader:
''' Phidgets 125khz RFID Reader/Writer '''
def __init__(self):
# Create an RFID object
try:
self.rfid = RFID()
self.user_manager = UserManager()
except RuntimeError as e:
Logger.info("RFID: Phidget Runtime Exception: %s" % e.details)
Logger.info("RFID: Phidget Exiting....")
exit(1)
#Main Phiget Program Code
try:
#logging example, uncomment to generate a log file
#rfid.enableLogging(PhidgetLogLevel.PHIDGET_LOG_VERBOSE, "phidgetlog.log")
self.rfid.setOnAttachHandler(self.rfidAttached)
self.rfid.setOnDetachHandler(self.rfidDetached)
self.rfid.setOnErrorhandler(self.rfidError)
self.rfid.setOnOutputChangeHandler(self.rfidOutputChanged)
self.rfid.setOnTagHandler(self.rfidTagGained)
self.rfid.setOnTagLostHandler(self.rfidTagLost)
except PhidgetException as e:
Logger.exception("RFID: Phidget Exception %i: %s" % (e.code, e.details))
Logger.exception("RFID: Exiting....")
exit(1)
Logger.info("RFID: Opening phidget object....")
try:
self.rfid.openPhidget()
except PhidgetException as e:
Logger.info("RFID: Phidget Exception %i: %s" % (e.code, e.details))
Logger.info("RFID: Exiting....")
exit(1)
Logger.info("RFID: Waiting for attach....")
try:
self.rfid.waitForAttach(10000)
except PhidgetException as e:
Logger.exception("RFID: Phidget Exception %i: %s" % (e.code, e.details))
try:
self.rfid.closePhidget()
except PhidgetException as e:
Logger.exception("RFID: Phidget Exception %i: %s" % (e.code, e.details))
Logger.exception("RFID: Exiting....")
exit(1)
Logger.exception("RFID: Exiting....")
exit(1)
else:
self.displayDeviceInfo()
Logger.info("RFID: Turning on the RFID antenna....")
self.rfid.setAntennaOn(True)
# Information Display Function
def displayDeviceInfo(self):
Logger.info("RFID: |------------|----------------------------------|--------------|------------|")
Logger.info("RFID: |- Attached -|- Type -|- Serial No. -|- Version -|")
Logger.info("RFID: |------------|----------------------------------|--------------|------------|")
Logger.info("RFID: |- %8s -|- %30s -|- %10d -|- %8d -|" % (self.rfid.isAttached(), self.rfid.getDeviceName(),
self.rfid.getSerialNum(), self.rfid.getDeviceVersion()))
Logger.info("RFID: |------------|----------------------------------|--------------|------------|")
Logger.info("RFID: Number of outputs: %i -- Antenna Status: %s -- Onboard LED Status: %s" %
(self.rfid.getOutputCount(), self.rfid.getAntennaOn(), self.rfid.getLEDOn()))
#Event Handler Callback Functions
def rfidAttached(self, e):
self.attached = e.device
Logger.info("RFID: %i Attached!" % (self.attached.getSerialNum()))
def rfidDetached(self, e):
self.detached = e.device
Logger.info("RFID: %i Detached!" % (self.detached.getSerialNum()))
def rfidError(self, e):
try:
source = e.device
Logger.exception("RFID: %i Phidget Error %i: %s" % (self.source.getSerialNum(), e.eCode, e.description))
except PhidgetException as e:
Logger.exception(("RFID: Phidget Exception %i: %s" % (e.code, e.details)))
def rfidOutputChanged(self, e):
self.source = e.device
Logger.info("RFID: %i Output %i State: %s" % (self.source.getSerialNum(), e.index, e.state))
def rfidTagGained(self, e):
self.rfid.setLEDOn(1)
Logger.info("RFID: Tag gained: {}".format(e.tag))
self.user_manager.tag_gained = e.tag # this sets up the UserManager.on_tag_gained() to be called
def rfidTagLost(self, e):
self.rfid.setLEDOn(0)
Logger.info("RFID: Tag lost: {}".format(e.tag))
class PhidgetApp(App):
use_kivy_settings = False
last_gained_tag = ObjectProperty(force_dispatch=True)
# start the RFID Reader thread
rfid = Reader()
def __init__(self, *args, **kwargs):
super(PhidgetApp, self).__init__(*args, **kwargs)
self.config = ConfigParser()
def build(self):
config = self.config.read('phidget.ini')
self.title = 'Phidget RFID Test'
root = ScreenManager()
for x in range(3):
root.add_widget(CustomScreen(name='Screen %d' % x))
return root
def on_last_gained_tag(self, instance, value):
Logger.info('Last Gained Tag: {}'.format(value['employee_type']))
if 1 in value["employee_type"]: # Operator
self.root.current = 'Screen 0'
if 2 in value["employee_type"]: # Supervisor
self.root.current = 'Screen 1'
if 3 in value["employee_type"]: # Supervisor
self.root.current = 'Screen 2'
self.root.current_screen.tag = value["rfid_tag"]
if __name__ == '__main__':
PhidgetApp().run()
'''
{
u'phone_number': u'',
u'employee_status': [1],
u'sms_email_address': u'sms email goes here',
u'notes': u'1st Shift Operator',
u'rfid_tag': u'023af76c',
u'employee_type': [1],
u'email_address': u'email needed for notifications',
u'id': 12
}
'''