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libraries/Antares_ESP8266_MQTT/examples/AntaresMQTTSubscribe/AntaresMQTTSubscribe.ino

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+/*
+    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"
+#define WIFISSID "your-wifi-ssid"
+#define PASSWORD "your-wifi-password"
+
+#define projectName "your-project-name"
+#define deviceName "your-device-name"
+
+AntaresESP8266MQTT antares(ACCESSKEY);
+
+void callback(char topic[], byte payload[], unsigned int 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("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() {
+  Serial.begin(115200);
+  antares.setDebug(true);
+  antares.wifiConnection(WIFISSID, PASSWORD);
+  antares.setMqttServer();
+  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();
+}