def initialize_sensors():
print("\n--- Sensors initializing...")
try:
#For a raspberry pi, for example, to set up pins 4 and 5, you would add
#GPIO.setmode(GPIO.BCM)
#GPIO.setup(4, GPIO.IN)
#GPIO.setup(5, GPIO.IN)
print("--- Waiting 10 seconds for sensors to warm up...")
time.sleep(10)
# Activate the Phidget
global ch
ch = TemperatureSensor()
# Assign event handlers
ch.setOnAttachHandler(PhidgetAttached)
ch.setOnDetachHandler(PhidgetDetached)
ch.setOnErrorHandler(ErrorEvent)
# Wait for the sensor to be attached
print("--- Waiting for the Phidget Object to be attached...")
ch.openWaitForAttachment(5000)
print("--- Sensors initialized!")
# Sync the time on this device to an internet time server
try:
print('\n--- Syncing time...')
os.system('sudo service ntpd stop')
time.sleep(1)
os.system('sudo ntpd -gq')
time.sleep(1)
os.system('sudo service ntpd start')
print('--- Success! Time is ' + str(datetime.datetime.now()))
except:
print('Error syncing time!')
except Exception as ex:
# Log any error, if it occurs
print(str(datetime.datetime.now()) + " Error when initializing sensors: " + str(ex))
global tempslist3
tempslist3 = np.append(tempslist3, temperature)
global start3
#if it has been 5s, calc an average and start again
if time.time() >= start3 + 5:
AvgTemp(3, tempslist3, start3)
tempslist3 = np.asarray([])
start3 += 5
try:
ch0.setOnAttachHandler(TemperatureSensorAttached)
ch0.setOnDetachHandler(TemperatureSensorDetached)
ch0.setOnErrorHandler(ErrorEvent)
ch1.setOnAttachHandler(TemperatureSensorAttached)
ch1.setOnDetachHandler(TemperatureSensorDetached)
ch1.setOnErrorHandler(ErrorEvent)
ch2.setOnAttachHandler(TemperatureSensorAttached)
ch2.setOnDetachHandler(TemperatureSensorDetached)
ch2.setOnErrorHandler(ErrorEvent)
ch3.setOnAttachHandler(TemperatureSensorAttached)
ch3.setOnDetachHandler(TemperatureSensorDetached)
ch3.setOnErrorHandler(ErrorEvent)
start0 = time.time()
def main():
try:
"""
* Allocate a new Phidget Channel object
"""
try:
ch = TemperatureSensor()
except PhidgetException as e:
sys.stderr.write("Runtime Error -> Creating TemperatureSensor: \n\t")
DisplayError(e)
raise
except RuntimeError as e:
sys.stderr.write("Runtime Error -> Creating TemperatureSensor: \n\t" + e)
raise
"""
* Set matching parameters to specify which channel to open
"""
#You may remove this line and hard-code the addressing parameters to fit your application
channelInfo = AskForDeviceParameters(ch)
ch.setDeviceSerialNumber(channelInfo.deviceSerialNumber)
ch.setHubPort(channelInfo.hubPort)
ch.setIsHubPortDevice(channelInfo.isHubPortDevice)
ch.setChannel(channelInfo.channel)
if(channelInfo.netInfo.isRemote):
ch.setIsRemote(channelInfo.netInfo.isRemote)
if(channelInfo.netInfo.serverDiscovery):
try:
Net.enableServerDiscovery(PhidgetServerType.PHIDGETSERVER_DEVICEREMOTE)
except PhidgetException as e:
PrintEnableServerDiscoveryErrorMessage(e)
raise EndProgramSignal("Program Terminated: EnableServerDiscovery Failed")
else:
Net.addServer("Server", channelInfo.netInfo.hostname,
channelInfo.netInfo.port, channelInfo.netInfo.password, 0)
"""
* Add event handlers before calling open so that no events are missed.
"""
print("\n--------------------------------------")
print("\nSetting OnAttachHandler...")
ch.setOnAttachHandler(onAttachHandler)
print("Setting OnDetachHandler...")
ch.setOnDetachHandler(onDetachHandler)
print("Setting OnErrorHandler...")
ch.setOnErrorHandler(onErrorHandler)
#This call may be harmlessly removed
PrintEventDescriptions()
print("\nSetting OnTemperatureChangeHandler...")
ch.setOnTemperatureChangeHandler(onTemperatureChangeHandler)
"""
* Open the channel with a timeout
"""
print("\nOpening and Waiting for Attachment...")
try:
ch.openWaitForAttachment(5000)
except PhidgetException as e:
PrintOpenErrorMessage(e, ch)
raise EndProgramSignal("Program Terminated: Open Failed")
print("Sampling data for 10 seconds...")
print("You can do stuff with your Phidgets here and/or in the event handlers.")
time.sleep(10)
"""
* Perform clean up and exit
"""
#clear the TemperatureChange event handler
ch.setOnTemperatureChangeHandler(None)
print("\nDone Sampling...")
print("Cleaning up...")
ch.close()
print("\nExiting...")
return 0
except PhidgetException as e:
sys.stderr.write("\nExiting with error(s)...")
DisplayError(e)
traceback.print_exc()
print("Cleaning up...")
ch.setOnTemperatureChangeHandler(None)
ch.close()
return 1
except EndProgramSignal as e:
print(e)
print("Cleaning up...")
ch.setOnTemperatureChangeHandler(None)
ch.close()
return 1
finally:
print("Press ENTER to end program.")
readin = sys.stdin.readline()