// This example shows how to connect to Cayenne using an Ethernet W5100 shield and send/receive sample data. //#define CAYENNE_DEBUG #define CAYENNE_PRINT Serial #include #include #include "Adafruit_HTU21DF.h" Adafruit_HTU21DF htu = Adafruit_HTU21DF(); // Cayenne authentication info. This should be obtained from the Cayenne Dashboard. char username[] = "username"; char password[] = "password"; char clientID[] = "clientID"; unsigned long lastMillis = 0; void setup() { Serial.begin(9600); Cayenne.begin(username, password, clientID); htu.begin(); } void loop() { Cayenne.loop(); //Publish data every 1 seconds (1000 milliseconds). Change this value to publish at a different interval. if(millis() - lastMillis > 1000) { lastMillis = millis(); //Write data to Cayenne here. This example just sends the current uptime in milliseconds. Cayenne.virtualWrite(0, lastMillis); Cayenne.virtualWrite(1, htu.readTemperature(), TYPE_TEMPERATURE, UNIT_CELSIUS); Cayenne.virtualWrite(2, htu.readHumidity(), TYPE_RELATIVE_HUMIDITY, UNIT_PERCENT); } } //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"); }