Device

On the device part we need to open our Workbench 3.4.0 open a new Mita Project. Once we have that we could paste the next code:

/**
 * Welcome to XDK LIVE.
 *
 * Not sure what to do now?
 * Check out the "Getting started" guide in the Eclipse help.
 */

package main;
import platforms.xdk110;

// Create a wireless connection named 'wireless'
setup wireless : WLAN {
    ssid = "Totalplay-4B80";
    ipConfiguration = Dhcp();
    authentification = Personal(psk = "pass");
}

// Create a MQTT instance
setup messaging : MQTT {
    transport = wireless;
    url = "mqtt://broker.hivemq.com:1883"; // Try differents brokers iot.eclipse.org, etc. 
    cleanSession = true;
    clientId = "1234";  //Define your userID
    var  button = topic("XDK/RFT/switch",1);    //Define your own topic
    var  temperature = topic("XDK/RFT/temperature/status",1);    //Define your own topic
    var  pressure = topic("XDK/RFT/pressure/status",1);    //Define your own topic
    var  humidity = topic("XDK/RFT/humidity/status",1);    //Define your own topic
}

// When button one is pressed, send text via MQTT
every button_one.pressed {
    messaging.button.write("1"); //Define your message
}

every button_one.released {
    messaging.button.write("0"); //Define your message
}

// Read and transmit the temperature every 5 seconds
every 5 seconds {
    var myTemperature = environment.temperature.read();
    var celsusis = myTemperature / 1000;
    messaging.temperature.write(`${celsusis}`);
}

// Read and transmit the barometric pressure every 10 seconds
every 10 seconds {
    var myPressure = environment.pressure.read();
    messaging.pressure.write(`${myPressure}`);
}

// Read and transmit the barometric humidity every 15 seconds
every 15 seconds {
    var myhumidity = environment.humidity.read();
    messaging.humidity.write(`${myhumidity}`);
}

Then we we flash this project in our device would give us an error, this is produce in a C file.

The issues is that

1. ButtonOne_OnEvent is defined twice, but it is only required once, technically.

2. The second implementation of ButtonOne_OnEvent that enqueues the oneReleased1 handler reacts to the event

   BSP_XDK_BUTTON_PRESS instead of BSP_XDK_BUTTON_RELEASE

So open the file SensorButton_one.c and past:

/**
 * Generated by Eclipse Mita.
 * @date 2018-08-16 23:51:10
 */


#include <BCDS_Basics.h>
#include <BSP_BoardType.h>
#include <MitaEvents.h>
#include <BCDS_BSP_Button.h>
#include <BCDS_CmdProcessor.h>
#include <BCDS_Retcode.h>
#include "MitaExceptions.h"

void ButtonOne_OnEvent(uint32_t data)
{
    if(data == BSP_XDK_BUTTON_PRESS) {
        Retcode_T retcode = CmdProcessor_enqueueFromIsr(&Mita_EventQueue, HandleEveryButton_onePressed1, NULL, data);
        if(retcode != RETCODE_OK)
        {
            Retcode_raiseErrorFromIsr(retcode);
        }
    }

    if(data == BSP_XDK_BUTTON_RELEASE) {
            Retcode_T retcode = CmdProcessor_enqueueFromIsr(&Mita_EventQueue, HandleEveryButton_oneReleased1, NULL, data);
            if(retcode != RETCODE_OK)
            {
                Retcode_raiseErrorFromIsr(retcode);
            }
        }
}


Retcode_T SensorButton_one_Setup(void)
{
    return BSP_Button_Connect();

    return NO_EXCEPTION;
}

Retcode_T SensorButton_one_Enable(void)
{
    Retcode_T retcode = NO_EXCEPTION;

    retcode = BSP_Button_Enable((uint32_t) BSP_XDK_BUTTON_1, ButtonOne_OnEvent);
    if(retcode != NO_EXCEPTION) return retcode;

    retcode = BSP_Button_Enable((uint32_t) BSP_XDK_BUTTON_1, ButtonOne_OnEvent);
    if(retcode != NO_EXCEPTION) return retcode;


    return NO_EXCEPTION;
}