ESP8266 / Mbed 2 deprecated ESP8266_MQTT_HelloWorld

Example MQTT implemented on the ESP8266

Dependencies:   ESP8266Interface MQTT mbed-rtos mbed

Fork of HelloMQTT by MQTT

This is an example of how to run MQTT using the esp8266 as the network connection. This program will default to trying to talk to a public MQTT server (test.mosquitto.org). The example will subscribe to a topic and then publish to that topic. In this way it will effectively echo back to itself. You can alternatively use a private mqtt broker,[[TODO: |instructions here]]

Please note that the ESP8266 interface cannot translate hostnames to IP Addresses, it can only accept raw IP Addresses as input.

MQTTESP8266.h

Committer:
mbedAustin
Date:
2015-06-09
Revision:
18:76d0899bc3ce
Parent:
17:92a64d43ee61

File content as of revision 18:76d0899bc3ce:


#if !defined(MQTTESP8266_H)
#define MQTTESP8266_H

#include "MQTTmbed.h"
#include "ESP8266Interface.h"
#include "MQTTSocket.h"

// This struct is only used to workaround the order that the interfaces are initialized
// MQTTSocket contains a TCPSocketConnection which needs the ESP8266Interface to be 
// instantiated first. Unfortunately the only way to instantiate a member before a superclass 
// is through another superclass.
struct MQTTESP8266Holder {
    MQTTESP8266Holder(PinName tx, PinName rx, PinName reset, const char *ssid, const char *pass) :
            _wifi(tx, rx, reset, ssid, pass) {}
    
    ESP8266Interface _wifi;
};

// Straightforward implementation of a MQTT interface
class MQTTESP8266 : public MQTTESP8266Holder, public MQTTSocket {    
private:
    MQTTESP8266Holder::_wifi;
    //ESP8266Interface _wifi;
    
public:    
    MQTTESP8266(PinName tx, PinName rx, PinName reset, const char *ssid, const char *pass) :
            MQTTESP8266Holder(tx, rx, reset, ssid, pass) {
        _wifi.init();
        _wifi.connect();
    }
    
    ESP8266Interface& getInterface() {
        return _wifi;
    }
    
    void reconnect() {
        _wifi.disconnect();
        _wifi.connect();
    }
};


#endif