// This example shows how to connect to Cayenne using an Arduino Yun and send/receive sample data. //#define CAYENNE_DEBUG #define CAYENNE_PRINT Serial #include // Cayenne authentication info. This should be obtained from the Cayenne Dashboard. char username[] = "MQTT_USERNAME"; char password[] = "MQTT_PASSWORD"; char clientID[] = "CLIENT_ID"; unsigned long lastMillis = 0; void setup() { Serial.begin(9600); Cayenne.begin(username, password, clientID); } void loop() { Cayenne.loop(); //Publish data every 10 seconds (10000 milliseconds). Change this value to publish at a different interval. if (millis() - lastMillis > 10000) { lastMillis = millis(); //Write data to Cayenne here. This example just sends the current uptime in milliseconds. Cayenne.virtualWrite(0, lastMillis); //Some examples of other functions you can use to send data. //Cayenne.celsiusWrite(1, 22.0); //Cayenne.luxWrite(2, 700); //Cayenne.virtualWrite(3, 50, TYPE_PROXIMITY, UNIT_CENTIMETER); } } //Default function for processing actuator commands from the Cayenne Dashboard. //You can also use functions for specific channels, e.g CAYENNE_IN(1) for channel 1 commands. CAYENNE_IN_DEFAULT() { CAYENNE_LOG("CAYENNE_IN_DEFAULT(%u) - %s, %s", request.channel, getValue.getId(), getValue.asString()); //Process message here. If there is an error set an error message using getValue.setError(), e.g getValue.setError("Error message"); }