Xcambo

Xcambó (X'Cambó) es un yacimiento arqueológico que se encuentra ubicado en el municipio de Dzemul en el estado mexicano de Yucatán. Es considerada por los expertos como una de los yacimientos de mayor extensión en la costa norte peninsular, contando con edificios de grandes dimensiones. Se asienta sobre el bosque húmedo de la ciénaga, a sólo 2 kilómetros de la costa del Golfo de México, en el norte de la península, aproximadamente 40 km al noreste de la ciudad de Mérida, capital del estado de Yucatán Wikipedia

Hardware Requirements

• None

Software Requirements

root@board:~# pip install psutil paho-mqtt
root@board:~# opkg install python-dev

root@board:~# wget https://launchpad.net/python-weather-api/trunk/0.3.8/+download/pywapi-0.3.8.tar.gz
root@board:~# tar zxvf pywapi-0.3.8.tar.gz
root@board:~# cd pywapi-0.3.8
root@board:~# python setup.py build
root@board:~# python setup.py install
root@board:~# cd ..
root@board:~# rm -rf pywapi-0.3.8*

Setup

root@board:~# curl https://raw.githubusercontent.com/TheIoTLearningInitiative/CodeLabs/master/Xcambo/setup.sh -o - | sh

Code

root@board:~/CodeLabs/Xcambo# vi main.py

#!/usr/bin/python

import paho.mqtt.client as paho
import psutil
import pywapi
import signal
import sys
import time

from threading import Thread

def functionApiWeather():
    data = pywapi.get_weather_from_weather_com('MXJO0043', 'metric')
    message = data['location']['name']
    message = message + ", Temperature " + data['current_conditions']['temperature'] + " C"
    message = message + ", Atmospheric Pressure " + data['current_conditions']['barometer']['reading'][:-3] + " mbar"
    return message

def functionDataActuator(status):
    print "Data Actuator Status %s" % status

def functionDataActuatorMqttOnMessage(mosq, obj, msg):
    print "Data Sensor Mqtt Subscribe Message!"
    functionDataActuator(msg.payload)

def functionDataActuatorMqttSubscribe():
    mqttclient = paho.Client()
    mqttclient.on_message = functionDataActuatorMqttOnMessage
    mqttclient.connect("test.mosquitto.org", 1883, 60)
    mqttclient.subscribe("Xcambo/Main/DataActuator", 0)
    while mqttclient.loop() == 0:
        pass

def functionDataSensor():
    netdata = psutil.net_io_counters()
    data = netdata.packets_sent + netdata.packets_recv
    return data

def functionDataSensorMqttOnPublish(mosq, obj, msg):
    print "Data Sensor Mqtt Published!"

def functionDataSensorMqttPublish():
    mqttclient = paho.Client()
    mqttclient.on_publish = functionDataSensorMqttOnPublish
    mqttclient.connect("test.mosquitto.org", 1883, 60)
    while True:
        data = functionDataSensor()
        topic = "Xcambo/Main/DataSensor"
        mqttclient.publish(topic, data)
        time.sleep(1)

def functionSignalHandler(signal, frame):
    sys.exit(0)

if __name__ == '__main__':

    signal.signal(signal.SIGINT, functionSignalHandler)

    threadmqttpublish = Thread(target=functionDataSensorMqttPublish)
    threadmqttpublish.start()

    threadmqttsubscribe = Thread(target=functionDataActuatorMqttSubscribe)
    threadmqttsubscribe.start()

    while True:
        print "Hello Xcambo"
        print "Data Sensor: %s " % functionDataSensor()
        print "API Weather: %s " % functionApiWeather()
        time.sleep(5)

Execution

root@board:~/CodeLabs/Xcambo# python main.py 
Hello Xcambo
Data Sensor: 131970 
API Weather: Guadalajara, JO, Mexico, Temperature 22 C, Atmospheric Pressure 847 mbar 
root@board:~/CodeLabs/Xcambo#

Monitoring

As subscribers

root@board:~# mosquitto_sub -h test.mosquitto.org -p 1883 -t Xcambo/Main/DataSensor

Activity

As publishers

root@board:~# mosquitto_pub -h test.mosquitto.org -p 1883 -t Xcambo/Main/DataActuator -m "On"