pyClient.py

Once RF24Gateway and RF24Ethernet are configured, standard tools can be used to interact with the sensor nodes.
Example of scheduled LED/Lighting control using a Python script.

#!/usr/bin/env python
"""
TMRh20 - 2015
A simple example of controlling a RF24Ethernet based sensor node via a python script
Turn a light on in the evening and off in the morning according to a schedule
"""
 
import urllib2
from datetime import datetime
import time
import syslog
 
######### Configuration #########
 
scheduleON = 21  # The hour (24hr clock) to turn the system on (21:00)
scheduleOFF = 6  # The hour (24hr clock) to turn the system off (06:00)
sensorIP = "10.10.2.4"  # The IP of a sensor node running one of the server examples
 
#################################
 
requestON = "http://" + sensorIP + ":1000/ON"
requestOFF = "http://" + sensorIP + ":1000/OFF"
lightState = 2
 
while 1:
 
    # Get the current hour
    currentHour = datetime.now().hour
 
    # Check to see if the system should be off
    if (currentHour >= scheduleON or currentHour < scheduleOFF) and lightState != 1:
 
        result = 0
        # Connect to our sensor at 10.10.3.44:1000/ and request OFF
        try:
            response = urllib2.urlopen(requestOFF, None, 15)  # 15 second time-out
            result = response.getcode()
        except urllib2.HTTPError, e:
            syslog.syslog("HTTPError = " + str(e.code))
        except urllib2.URLError, e:
            syslog.syslog("URLError = " + str(e.reason))
        except Exception:
            import traceback
 
            syslog.syslog("generic exception: " + traceback.format_exc())
        # Log errors and successful results to /var/log/syslog
        if result == 200:
            syslog.syslog("Light off at %s\n" % datetime.now())
            # Only change the light state if successful
            lightState = 1
 
    # Else, check to see if the system should be on
    elif currentHour >= scheduleOFF and lightState != 0:
        result = 0
 
        try:
            response = urllib2.urlopen(requestON, None, 15)  # 15 second time-out
            result = response.getcode()
        except urllib2.HTTPError, e:
            syslog.syslog("HTTPError = " + str(e.code))
        except urllib2.URLError, e:
            syslog.syslog("URLError = " + str(e.reason))
        except Exception:
            import traceback
 
            syslog.syslog("generic exception: " + traceback.format_exc())
        # Log errors and successful results to /var/log/syslog
        if result == 200:
            syslog.syslog("Light on at %s\n" % datetime.now())
            # Only change the light state if successful
            lightState = 0
 
    # Wait 1 minute between retries and status checks
    time.sleep(60)