sending messages not working for some reason

  • Hi,

    I am trying to build a board connected to a relay and a switch. I have something up and running. the only issue is that for some reason when i send a message to the controller, it seems to never get there. I never get a response from the controller and on its logs i never see that the message arrived.

    I am using a eth W5100 and it is connected directly to my arduino, i.e. there is no relay or wifi involved, when i push the button i do get the print outs in the console, so the button is working.

    here is my code:

    // Enable debug prints to serial monitor
    #define MY_DEBUG
    // Enable gateway ethernet module type
    #define MY_GATEWAY_W5100
    // W5100 Ethernet module SPI enable (optional if using a shield/module that manages SPI_EN signal)
    #define MY_W5100_SPI_EN 4
    // Enable Soft SPI for NRF radio (note different radio wiring is required)
    // The W5100 ethernet module seems to have a hard time co-operate with
    // radio on the same spi bus.
    #if !defined(MY_W5100_SPI_EN) && !defined(ARDUINO_ARCH_SAMD)
      #define MY_SOFTSPI
      #define MY_SOFT_SPI_SCK_PIN 14
      #define MY_SOFT_SPI_MISO_PIN 16
      #define MY_SOFT_SPI_MOSI_PIN 15
    // When W5100 is connected we have to move CE/CSN pins for NRF radio
    //#ifndef MY_RF24_CE_PIN
    //  #define MY_RF24_CE_PIN 5
    //#ifndef MY_RF24_CS_PIN
    //  #define MY_RF24_CS_PIN 6
    // Enable to UDP
    //#define MY_USE_UDP
    #define MY_IP_ADDRESS 192,168,1,177   // If this is disabled, DHCP is used to retrieve address
    // Renewal period if using DHCP
    //#define MY_IP_RENEWAL_INTERVAL 60000
    // The port to keep open on node server mode / or port to contact in client mode
    #define MY_PORT 5003
    // The MAC address can be anything you want but should be unique on your network.
    // Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
    // Note that most of the Ardunio examples use  "DEAD BEEF FEED" for the MAC address.
    #define MY_MAC_ADDRESS 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
    // Enable inclusion mode
    // Enable Inclusion mode button on gateway
    // Set inclusion mode duration (in seconds)
    // Digital pin used for inclusion mode button
    // Set blinking period
    // Flash leds on rx/tx/err
    // Uncomment to override default HW configurations
    //#define MY_DEFAULT_ERR_LED_PIN 7  // Error led pin
    //#define MY_DEFAULT_RX_LED_PIN  8  // Receive led pin
    //#define MY_DEFAULT_TX_LED_PIN  9  // Transmit led pin
    // Enabled repeater feature for this node
    #include <SPI.h>
    #include <Ethernet.h>
    #if defined(MY_USE_UDP)
      #include <EthernetUdp.h>
    #include <MySensors.h>
    #include <Bounce2.h>
    #define RELAY_PIN  5  // Arduino Digital I/O pin number for relay 
    #define BUTTON_PIN  2  // Arduino Digital I/O pin number for button 
    #define CHILD_ID 1   // Id of the sensor child
    #define RELAY_ON 1
    #define RELAY_OFF 0
    Bounce debouncer = Bounce(); 
    int oldValue=0;
    bool state;
    long max_on_time = 100000;
    long last_on_time = 0;
    int ledState = HIGH;         // the current state of the output pin
    int buttonState;             // the current reading from the input pin
    int lastButtonState = LOW;   // the previous reading from the input pin
    long lastDebounceTime = 0;  // the last time the output pin was toggled
    long debounceDelay = 50;    // the debounce time; increase if the output flickers
    MyMessage msg(CHILD_ID,V_STATUS);
    void setup()  
      // Setup the button
      // Activate internal pull-up
      // After setting up the button, setup debouncer
      // Make sure relays are off when starting up
      digitalWrite(RELAY_PIN, RELAY_OFF);
      // Then set relay pins in output mode
      pinMode(RELAY_PIN, OUTPUT);   
      // Set relay to last known state (using eeprom storage) 
      state = loadState(CHILD_ID);
      digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
    void presentation()  {
      // Send the sketch version information to the gateway and Controller
      sendSketchInfo("Relay & Button", "1.0");
      // Register all sensors to gw (they will be created as child devices)
      present(CHILD_ID, S_LIGHT);
    *  Example on how to asynchronously check for new messages from gw
    void loop() 
      // Get the update value
      int value =;
      if (value != oldValue && value==0) {
          send(msg.set(state?false:true), true); // Send new state and request ack back
          //send(msg.set(true)); // Send new state and request ack back
      oldValue = value;
    void receive(const MyMessage &message) {
      Serial.println("got message");
      // We only expect one type of message from controller. But we better check anyway.
      if (message.isAck()) {
         Serial.println("This is an ack from gateway");
      if (message.type == V_STATUS) {
         // Change relay state
         state = message.getBool();
         digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
         // Store state in eeprom
         saveState(CHILD_ID, state);
         // Write some debug info
         Serial.print("Incoming change for sensor:");
         Serial.print(", New status: ");

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