/* This example shows how to connect MAX6675 to Cayenne using a WiFi shield and send/receive sample data. The CayenneMQTT Library is required to run this sketch. If you have not already done so you can install it from the Arduino IDE Library Manager. Steps: 1. Set the Cayenne authentication info to match the authentication info from the Dashboard. 2. Set the network name and password. 3. Compile and upload the sketch. 4. A temporary widget will be automatically generated in the Cayenne Dashboard. To make the widget permanent click the plus sign on the widget. */ //#define CAYENNE_DEBUG // Uncomment to show debug messages #define CAYENNE_PRINT Serial // Comment this out to disable prints and save space #include #include "max6675.h" int thermoDO = 4; int thermoCS = 5; int thermoCLK = 6; MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO); // WiFi network info. char ssid[] = "ssid"; char wifiPassword[] = "wifiPassword"; // Cayenne authentication info. This should be obtained from the Cayenne Dashboard. char username[] = "MQTT_USERNAME"; char password[] = "MQTT_PASSWORD"; char clientID[] = "CLIENT_ID"; void setup() { Serial.begin(9600); Cayenne.begin(username, password, clientID, ssid, wifiPassword); } void loop() { Cayenne.loop(); } // Default function for sending sensor data at intervals to Cayenne. // You can also use functions for specific channels, e.g CAYENNE_OUT(1) for sending channel 1 data. CAYENNE_OUT_DEFAULT() { // Write data to Cayenne here. This example just sends the current uptime in milliseconds on virtual channel 0. Cayenne.virtualWrite(0, millis()); Cayenne.celsiusWrite(1, thermocouple.readCelsius()); //Cayenne.virtualWrite(2, thermocouple.readFahrenheit()); } // 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("Channel %u, value %s", request.channel, getValue.asString()); //Process message here. If there is an error set an error message using getValue.setError(), e.g getValue.setError("Error message"); }