Pretty json print, added parsing functionality

examples/AntaresMQTTPublish/AntaresMQTTPublish.ino

@@ -1,3 +1,19 @@
+/*
+    This is an example sketch to publish MQTT data to your
+    Antares IoT Platform project device via ESP8266.
+
+    MQTT server & port:
+    platform.antares.id, port 1338
+
+    MQTT topic:
+    /oneM2M/req/your-access-key/antares-cse/json
+
+    This sketch will deploy data to your Antares device
+    and publish to the MQTT topic simultaneously.
+
+    For more information, please visit https://antares.id/id/docs.html
+*/
+
 #include <AntaresESP8266MQTT.h>
 
 #define ACCESSKEY "your-access-key"
@@ -15,14 +31,31 @@ void setup() {
   antares.wifiConnection(WIFISSID, PASSWORD);
   antares.setMqttServer();
 }
+
 void loop() {
+  /*
+    Check if we're still connected to the MQTT broker/server.
+    If disconnected, the device will try to reconnect.
+   */
   antares.checkMqttConnection();
 
-  antares.add("temperature", 30);
-  antares.add("humidity", 75);
-  antares.add("message", "Hello World!");
-  antares.add("temperature", 45);
-  antares.printData();
+  // Variable init
+  int temp = random(25,30) ;
+  int hum = random(75,90);
+  float windsp = float(random(20, 30))/3.33;
+  float rainlv = float(random(0, 20))/6.99;
+  String lat = "-6.8718189";
+  String lon = "107.5872477";
+
+  // Add variable to data storage buffer
+  antares.add("temperature", temp);
+  antares.add("humidity", hum);
+  antares.add("wind_speed", windsp);
+  antares.add("rain_level", rainlv);
+  antares.add("latitude", lat);
+  antares.add("longitude", lon);
+
+  // Publish and print data
   antares.publish(projectName, deviceName);
   delay(5000);
 }

examples/AntaresMQTTSubscribe/AntaresMQTTSubscribe.ino

@@ -1,3 +1,20 @@
+/*
+    This is an example sketch to subscribe to MQTT data on ESP8266
+    via the Antares IoT Platform.
+
+    MQTT server & port:
+    platform.antares.id, port 1338
+
+    MQTT topic:
+    /oneM2M/req/your-access-key/antares-cse/json
+
+    The main function in this sketch is the callback function,
+    which will be fired every time a new message is published
+    to the topic.
+
+    For more information, please visit https://antares.id/id/docs.html
+*/
+
 #include <AntaresESP8266MQTT.h>
 
 #define ACCESSKEY "your-access-key"
@@ -10,12 +27,23 @@
 AntaresESP8266MQTT antares(ACCESSKEY);
 
 void callback(char topic[], byte payload[], unsigned int length) {
-  String topicString = String(topic);
-  String payloadString = antares.byteToString(payload, length);
+  /*
+    Get the whole received data, including the topic,
+    and parse the data according to the Antares data format.
+  */
+  antares.get(topic, payload, length);
 
-  Serial.println("[ANTARES] New Mesage: ");
-  Serial.println(topicString);
-  Serial.println(payloadString);
+  Serial.println("New Message!");
+  // Print topic and payload
+  Serial.println("Topic: " + antares.getTopic());
+  Serial.println("Payload: " + antares.getPayload());
+  // Print individual data
+  Serial.println("Temperature: " + String(antares.getInt("temperature")));
+  Serial.println("Humidity: " + String(antares.getInt("humidity")));
+  Serial.println("Wind speed: " + String(antares.getFloat("wind_speed")));
+  Serial.println("Rain level: " + String(antares.getFloat("rain_level")));
+  Serial.println("Latitude: " + antares.getString("latitude"));
+  Serial.println("Longitude: " + antares.getString("longitude"));
 }
 
 void setup() {
@@ -26,5 +54,9 @@ void setup() {
   antares.setCallback(callback);
 }
 void loop() {
+  /*
+    Check if we're still connected to the MQTT broker/server.
+    If disconnected, the device will try to reconnect.
+  */
   antares.checkMqttConnection();
 }

keywords.txt

@@ -19,6 +19,16 @@ ipToString	KEYWORD2
 setMqttServer	KEYWORD2
 checkMqttConnection	KEYWORD2
 printdata	KEYWORD2
+add	KEYWORD2
+get	KEYWORD2
+printData	KEYWORD2
+publish	KEYWORD2
+getTopic	KEYWORD2
+getPayload	KEYWORD2
+getInt	KEYWORD2
+getFloat	KEYWORD2
+getDouble	KEYWORD2
+getString	KEYWORD2
 
 ######################################
 # Constants (LITERAL1)

src/AntaresESP8266MQTT.cpp

@@ -127,8 +127,16 @@ void AntaresESP8266MQTT::publish(String projectName, String deviceName) {
     String topic = "/oneM2M/req/" + _accessKey + "/antares-cse/json";
     String finalData;
 
+    if(_debug) {
+        DynamicJsonBuffer jsonBuffer;
+        JsonObject& object = jsonBuffer.parseObject(_jsonDataString);
+        printDebug("[ANTARES] PUBLISH DATA:\n\n");
+        object.prettyPrintTo(Serial);
+        Serial.println("\n");
+    }
+
     _jsonDataString.replace("\"", "\\\"");
-    Serial.println(_jsonDataString);
+
 
     finalData += "{";
     finalData += "\"m2m:rqp\": {";
@@ -161,6 +169,30 @@ void AntaresESP8266MQTT::publish(String projectName, String deviceName) {
     client.publish(topicChar, finalDataChar);
 }
 
+int AntaresESP8266MQTT::getInt(String key) {
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& object = jsonBuffer.parseObject(_jsonSubDataString);
+    return object[key];
+}
+
+float AntaresESP8266MQTT::getFloat(String key) {
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& object = jsonBuffer.parseObject(_jsonSubDataString);
+    return object[key];
+}
+
+double AntaresESP8266MQTT::getDouble(String key) {
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& object = jsonBuffer.parseObject(_jsonSubDataString);
+    return object[key];
+}
+
+String AntaresESP8266MQTT::getString(String key) {
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& object = jsonBuffer.parseObject(_jsonSubDataString);
+    return object[key];
+}
+
 void AntaresESP8266MQTT::setCallback(std::function<void(char*, uint8_t*, unsigned int)> callbackFunc) {
     client.setCallback(callbackFunc);
 }
@@ -169,12 +201,28 @@ bool AntaresESP8266MQTT::setDebug(bool trueFalse) {
     _debug = trueFalse;
 }
 
-String AntaresESP8266MQTT::byteToString(byte* payload, unsigned int length) {
+String AntaresESP8266MQTT::get(char* topic, byte* payload, unsigned int length) {
+    _receivedTopic = String(topic);
+
     String payloadString;
     for(int i = 0; i < length; i++) {
         payloadString += char(payload[i]);
     }
-    return payloadString;
+
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& object = jsonBuffer.parseObject(payloadString);
+    String parsedString = object["m2m:rqp"]["pc"]["m2m:cin"]["con"];
+    _jsonSubDataString = parsedString;
+
+    return _jsonSubDataString;
+}
+
+String AntaresESP8266MQTT::getTopic() {
+    return _receivedTopic;
+}
+
+String AntaresESP8266MQTT::getPayload() {
+    return _jsonSubDataString;
 }
 
 String AntaresESP8266MQTT::ipToString(IPAddress ip) {

src/AntaresESP8266MQTT.h

@@ -17,7 +17,9 @@ private:
     char* _wifiPass;
     String _accessKey;
     String _jsonDataString = "{}";
+    String _jsonSubDataString;
     String _subscriptionTopic;
+    String _receivedTopic;
 
 public:
     AntaresESP8266MQTT(String accessKey);
@@ -33,11 +35,20 @@ public:
     /* Overloaded functions end */
     void printData();
     void publish(String projectName, String deviceName);
+    /* Get subscription callback data*/
+    int getInt(String key);
+    float getFloat(String key);
+    double getDouble(String key);
+    String getString(String key);
+    /* Get data end */
+
+    String getTopic();
+    String getPayload();
 
     void setMqttServer();
     void checkMqttConnection();
     void setCallback(std::function<void(char*, uint8_t*, unsigned int)> callbackFunc);
-    String byteToString(byte* payload, unsigned int length);
+    String get(char* topic, byte* payload, unsigned int length);
     void setSubscriptionTopic();
 };