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XBee Sensors

57

Use xbeelth.py functions in Python programs

To use the functions in the module xbeelth.py for programming light,

temperature, and humidity functions in a XBee Sensor /L/T/H product, any

Python programs you create must contain this statement:

from xbeelth import *

The functions and arguments in module xbeelth.py are as follows:

############################################################################

# #

# Class XBeeLTHN #

# #

############################################################################

# #

# This class derives from the base XBeeDevice class, and implements #

# the LTH (Light/Temperature/Humidity) layer of the Digi XBee LTH Adapter. #

# #

############################################################################

# #

# Functions: #

# #

# raw_sample() #

# #

# Returns a dictionary of raw analog sample data #

# #

# The dictionary will contain the following keys: #

# 1) 'temperature' #

# 2) 'light' #

# 3) 'humidity' #

# #

# sample() #

# #

# Returns a dictionary of data scaled into actual usable values. #

# #

# The dictionary will contain the following keys: #

# 1) 'temperature' - Degrees in Celsius. #

# 2) 'light' - value in lux. #

# 3) 'humidity' - value in %rh #

# #

############################################################################

Sample program

import sys

import time

# When running on the gateway, all of the modules our # application

will use shall exist within this ZIP file:

sys.path.append("WEB/python/DigiXBeeDrivers.zip")

from xbeelth import *

lth = XBeeLTHN("00:13:a2:00:40:3e:16:d2!")

print lth.getname()

reading = lth.sample()

print "---------------------------------------------"

print "Temperature (C):\t" + str("%.2f" % reading['temperature'])

print "Temperature (F):\t" + str("%.2f" % (reading['temperature'] *

(9.0 / 5.0) + 32.0)) print "Light (lx):\t\t" + str("%.2f" %

reading['light']) print "Humidity (%RH):\t\t" + str("%.0f" %

reading['humidity']) + '%'

print "---------------------------------------------"

Digi XBee Guía de usuario Pagina 57

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Digi XBee Guía de usuario Pagina 57

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