Diff: main.cpp

Revision:

9:2457af993109

Parent:

8:65510f1931d1

--- a/main.cpp	Mon Aug 28 07:59:02 2017 +0000
+++ b/main.cpp	Mon Aug 28 15:05:14 2017 +0000
@@ -198,3 +198,74 @@
     return 0;
 }
 
+/**
+* @file SimplePublish.c
+*
+* Simplified example app for using the Cayenne MQTT C library to publish example data.
+*/
+
+#include "CayenneMQTTClient.h"
+
+// Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
+
+Network network;
+CayenneMQTTClient mqttClient;
+
+
+// Connect to the Cayenne server.
+int connectClient(void)
+{
+    // Connect to the server.
+    int error = 0;
+    printf("Connecting to %s:%d\n", CAYENNE_DOMAIN, CAYENNE_PORT);
+    if ((error = NetworkConnect(&network, CAYENNE_DOMAIN, CAYENNE_PORT)) != 0) {
+        return error;
+    }
+
+    if ((error = CayenneMQTTConnect(&mqttClient)) != MQTT_SUCCESS) {
+        NetworkDisconnect(&network);
+        return error;
+    }
+    printf("Connected\n");
+
+    // Send device info. Here we just send some example values for the system info. These should be changed to use actual system data, or removed if not needed.
+    CayenneMQTTPublishData(&mqttClient, NULL, SYS_VERSION_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, CAYENNE_VERSION);
+    CayenneMQTTPublishData(&mqttClient, NULL, SYS_MODEL_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, "Linux");
+
+    return CAYENNE_SUCCESS;
+}
+
+
+// Main loop where MQTT code is run.
+void loop(void)
+{
+    while (1) {
+        // Yield to allow MQTT message processing.
+        CayenneMQTTYield(&mqttClient, 1000);
+
+        // Publish some example data every second. This should be changed to send your actual data to Cayenne.
+        CayenneMQTTPublishDataFloat(&mqttClient, NULL, DATA_TOPIC, 0, TYPE_TEMPERATURE, UNIT_CELSIUS, 30.5);
+        CayenneMQTTPublishDataInt(&mqttClient, NULL, DATA_TOPIC, 1, TYPE_LUMINOSITY, UNIT_LUX, 1000);
+    }
+}
+
+// Main function.
+int main(int argc, char** argv)
+{
+    // Initialize the network.
+    NetworkInit(&network);
+
+    // Initialize the Cayenne client.
+    CayenneMQTTClientInit(&mqttClient, &network, username, password, clientID, NULL);
+
+    // Connect to Cayenne.
+    if (connectClient() == CAYENNE_SUCCESS) {
+        // Run main loop.
+        loop();
+    }
+    else {
+        printf("Connection failed, exiting\n");
+    }
+
+    return 0;
+}