Not able to receive the MQTT messages in arduino UNO (ENC28J60) board

[titusece]

Hello,

I am having the below code and want to send & receive the MQTT messages on arduino UNO + ENC28J60 shield.

#include <UIPEthernet.h>
#include <PubSubClient.h>

// Update these with values suitable for your network.
byte mac[]    = {  0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress ip(192, 168, 0, 110);
IPAddress server(192, 168, 0, 123);

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i=0;i<length;i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();
}

EthernetClient ethClient;
PubSubClient mqttClient(ethClient);

void reconnect() {
  // Loop until we're reconnected
  while (!mqttClient.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (mqttClient.connect("arduinoClient")) {
      Serial.println("connected");
      // Once connected, publish an announcement...
      mqttClient.publish("outTopic","hello world");
      // ... and resubscribe
      mqttClient.subscribe("inTopic");
    } else {
      Serial.print("failed, rc=");
      Serial.print(mqttClient.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}

void setup()
{
  Serial.begin(9600);

  mqttClient.setServer(server, 1883);
  mqttClient.setCallback(callback);

  Ethernet.begin(mac, ip);
  // Allow the hardware to sort itself out
  delay(1500);
}

void loop()
{
  if (!mqttClient.connected()) {
    reconnect();
  }
  mqttClient.loop();
}

The problem here is that I am able to send messages to my Linux PC and could not receive the message which sent by my Linux PC (publish). What could be the problem ?

I have also tried to use with W5100 ethernet shield, shield has some problem so I could not test it. I think, I have tested one time, it didn't work with that W5100 shield too, again the same receiving problem.

Can you please help me on this ?

Regards, Titus S.

[wer38]

I'm having the same problem i am receiving the topic but no payload