def sendSignal(self):
#send date, time and id
#need to send to queue instead
dateTime = datetime.datetime.utcnow()
print dateTime
self.__signal = Signal.initializeSignal(self.__ID, self.__Location, dateTime)
self.setEmptyFlag(False)
def sendSignal(self, pinNumber):
#note that a timedelta is needed due to the use of two sensors
a = self.__timestamp + datetime.timedelta(milliseconds=500)
if datetime.datetime.now() > a:
print "signal callback from signal: " + str(pinNumber)
#record the current time and create the string that will be stored into the database
self.__timestamp = datetime.datetime.now()
self.__signal = Signal.initializeSignal(self.__ID, self.__Location, self.__timestamp)
#indicate that a signal was detected
self.setEmptyFlag(False)
#sets the sensor to the appropriate GPIO pin. The pins are set according to the colour of bin that the sensor is placed in. Each bin has two sensors and the pins have been optimized to make cable management easier.
def setGPIOPin(self, ID):
if ID is "black":
self.__gpiopin1 = 16
self.__gpiopin2 = 18
return
elif ID is "green":
self.__gpiopin1 = 7
self.__gpiopin2 = 11
return
elif ID is "blue":
self.__gpiopin1 = 12
self.__gpiopin2 = 22
return
elif ID is "grey":
self.__gpiopin1 = 35
self.__gpiopin2 = 37
return
else:
return
#sets the empty flag to the given empty variable, also used by Queue class
def setEmptyFlag(self, empty):
self.__isEmpty = empty
#returns the empty flag, used by Queue class
def isEmpty(self):
return self.__isEmpty
def getSignal(self):
self.setEmptyFlag(True)
return self.__signal
def test_parseSignal():
dateTime = datetime.datetime.utcnow()
testSignal = Signal.initializeSignal("green","Nest",dateTime)
expectedSignal = ("green,Nest," + str(dateTime)).split(Signal.delim)
assert Signal.parseSignal(testSignal) == expectedSignal
def test_initializeSignal():
dateTime = datetime.datetime.utcnow()
testSignal = Signal.initializeSignal("green","Nest",dateTime)
assert testSignal == ("green,Nest," + str(dateTime))
