Provides Javascript wrappers for MQTT.

Dependencies:   mbed-http DEVI2C_JS MQTTPacket FP

Revision:
0:f4dbe435e64c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MQTT_JS.h	Wed Jan 17 11:30:51 2018 +0100
@@ -0,0 +1,137 @@
+/*
+ * @file    MQTT_JS.h
+ * @author  ST
+ * @version V1.0.0
+ * @date    9 October 2017
+ * @brief   Implementation of MQTT for Javascript.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Prevent recursive inclusion -----------------------------------------------*/
+
+#ifndef _MQTT_JS_H_
+#define _MQTT_JS_H_
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "mbed.h"
+#include "TCPSocket.h"
+#include "MQTTClient.h"
+#include "MQTTNetwork.h"
+#include "MQTTmbed.h"
+
+#include "NetworkInterface_JS.h"
+
+#include "jerryscript-mbed-library-registry/wrap_tools.h"
+
+#include <ctype.h>
+
+/* Constants -----------------------------------------------------------------*/
+
+#define MQTT_MAX_PACKET_SIZE 250
+#define MQTT_MAX_PAYLOAD_SIZE 300
+
+#define MAX_SSID_LEN   80
+#define MAX_PASSW_LEN  80
+
+#define HTTP_BROKER_URL "http://customer.cloudmqtt.com/login"
+
+typedef void (* subscribeCallbackType)(MQTT::MessageData & msgMQTT);
+
+/* Class Declaration ---------------------------------------------------------*/
+
+/**
+ * Abstract class of MQTT for Javascript.
+ */
+class MQTT_JS{    
+private:    
+    char ssid[MAX_SSID_LEN];
+    char seckey[MAX_PASSW_LEN]; 
+
+    char id[32];
+    char topic[32];
+    char auth_token[32];
+    char hostname[128];
+    char port[16];
+
+    int connack_rc; // MQTT connack return code
+    char* ip_addr;
+    char type[30];
+    bool netConnecting;
+    int connectTimeout;
+    bool mqttConnecting;
+    bool netConnected;
+    bool connected;
+    int retryAttempt;
+    char subscription_url[300];
+    MQTT::Client<MQTTNetwork, Countdown, MQTT_MAX_PACKET_SIZE>* client;
+    MQTTNetwork* mqttNetwork;
+
+    static jerry_value_t onSubscribeCallback;
+
+public:
+
+    /* Constructors */
+    MQTT_JS();
+    
+    /* Destructors */
+    ~MQTT_JS();
+
+    /* Functions */
+    
+    NetworkInterface* getNetworkInterface();
+
+    int onSubscribe(jerry_value_t cb);
+    int onDisconnect(jerry_value_t cb, subscribeCallbackType fn);
+
+    static void subscribe_cb(MQTT::MessageData & msgMQTT);
+
+    int init(NetworkInterface* network, char* _id, char* _token, char* _url, char* _port);
+
+    int connect();
+
+    int subscribe(char *pubTopic);
+
+    int unsubscribe(char *pubTopic);
+
+    int connect(NetworkInterface* network);
+
+    int getConnTimeout(int attemptNumber);
+
+    void attemptConnect(NetworkInterface* network) ;
+
+    int publish(char* buf, int n = 0);
+
+    int yield(int time);
+
+    int start_mqtt(NetworkInterface* network);
+};
+
+#endif
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