Paul Kamp / Mbed 2 deprecated MTS_Dragonfly_Twilio_Sync_IoT_MQTT

Connecting a Multi-Tech Systems Dragonfly™ to Twilio's Sync for IoT Quickstart. Blink a dev board LED.

Dependencies:   MQTT MbedJSONValue mbed mtsas

Fork of DragonflyMQTT by miao zhicheng

Code to connect a Multi-Tech® MultiConnect® Dragonfly™ to Twilio's Sync for IoT: https://www.twilio.com/docs/api/devices

Uses MQTT over TLS and subscribes to a topic where you can control an LED. See also our Quickstart using this code, here: https://www.twilio.com/docs/quickstart/sync-iot/mqtt-multi-tech-multiconnect-dragonfly-sync-iot

Diff: main.cpp

Revision:
10:e9abab84df23
Parent:
9:2d119fbe7482
--- a/main.cpp	Fri Sep 15 22:41:22 2017 +0000
+++ b/main.cpp	Tue Sep 19 21:45:19 2017 +0000
@@ -16,7 +16,7 @@
 char* sync_key                          = "KYXXXXXXXXXXXXXXXXXXXX";
 char* sync_password                     = "SECRET_HERE";
 char* sync_document                     = "sync/docs/BoardLED";
-char* sync_device_name                  = "MST Dragonfly";
+char* sync_device_name                  = "MultiConnect Dragonfly";
 
 /* Sync server and MQTT setup; you probably don't have to change these. */
 const char* mqtt_server                 = "mqtt-sync.us1.twilio.com";
@@ -50,7 +50,7 @@
     /* The parser will segfault and reset the board if "led" isn't contained. */
     if (parser.hasMember("led")) {
         std::string led_str;
-        led_str = parser["led"][0].get<std::string>();
+        led_str = parser["led"].get<std::string>();
         
         if (led_str.compare("ON") == 0) {
             logDebug("Turning LED ON");
@@ -105,6 +105,26 @@
         wait(MQTT_HEARTBEAT*10);
         connect_mqtt();
     }
+    
+    // Here's an example of publishing from the MultiConnect Dragonfly.
+    // Uncomment until the end of the function to send a 'msg' back to Sync
+    // every 5 cycles through the loop! (5*MQTT_HEARTBEAT seconds)
+    /*
+    static uint32_t ticks = 0;
+    MQTT::Message message;
+    char buf[maxMQTTpackageSize] = "{\"msg\":\"Ahoy!\",\"led\":\"ON\"}";
+    message.qos = MQTT::QOS1;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf) + 1;
+    if (ticks++ > 4) {
+            logInfo("Sending ON message to Twilio!");
+            client.publish(
+                    sync_document, 
+                    message
+            );
+            ticks = 0;
+    }
+    */
 }