Cayenne MQTT support for ENC28J60 and nano?

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4

This basic sketch should work for the ENC28J60 but it’s just a bit too big for a Nano or a Uno. The UIP library is a pig like most of the Wifi shields. Compiles fine for the Mega.

Cheers,

Craig

/**************************************************************
 * For this example you need UIPEthernet library:
 *   https://github.com/ntruchsess/arduino_uip
 *
 * Typical wiring would be:
 *  VCC -- 5V
 *  GND -- GND
 *  CS  -- D10
 *  SI  -- D11
 *  SCK -- D13
 *  SO  -- D12
 *  INT -- D2
 *
 *
 **************************************************************/
#define CAYENNE_DEBUG         // Uncomment to show debug messages
#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space

#include <UIPEthernet.h>
#include <CayenneMQTTEthernetClient.h>

// 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);
}

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());
  // 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("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");
}
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