Ethernet gateway not willing to accept IP number

  • Dear all,
    I tried to use an ethernet gateway, following exactly the instructions here:

    and using the WizNET (W5100) Ethernet module.

    I got the followinf messages from the arduino monitor:
    0;255;3;0;9;Starting gateway (RNNGA-, 2.0.0)
    0;255;3;0;9;TSM:GW MODE
    0;255;3;0;9;No registration required
    0;255;3;0;9;Init complete, id=0, parent=0, distance=0, registration=1
    I used the code provided in the mysensors package (2.0) from the arduino program, where it specifies as IP address
    #define MY_CONTROLLER_IP_ADDRESS 192, 168, 1, 97

    I cannot find this gateway with my controller - not at nor at
    Can anyone explain me why?
    Thanks a lot

  • Mod

    @Maurizio-Collu could you describe what do you do when you try to find the controller, and what happens?

    Is the ip address define line before the MySensors include?
    Is the ip address in the same adress range as your local network? is a broadcast address. You will probably not get a useful reply from there.

  • Thanks @mfalkvidd
    Yes, it is defined before the MySensors include
    And yes, it is defined in the same address range

    Here it is the code

    // Enable debug prints to serial monitor
    #define MY_DEBUG 
    // Enable and select radio type attached
    #define MY_RADIO_NRF24
    //#define MY_RADIO_RFM69
    // 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 192,168,1,66   // 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      
    // Controller ip address. Enables client mode (default is "server" mode). 
    // Also enable this if MY_USE_UDP is used and you want sensor data sent somewhere. 
    #define MY_CONTROLLER_IP_ADDRESS 192, 168, 1, 97   
    // 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
    // Flash leds on rx/tx/err
    // Set blinking period
    // Enable inclusion mode
    // Enable Inclusion mode button on gateway
    // Set inclusion mode duration (in seconds)
    // Digital pin used for inclusion mode button
    // 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  // the PCB, on board LED
    #include <SPI.h>
    #if defined(MY_USE_UDP)
      #include <EthernetUdp.h>
    #include <Ethernet.h>
    #include <MySensors.h>
    void setup()
    void loop() {

  • Mod

    Looks like you've confused the gateway with the controller. The gateway is defined to use

    See for details on which component does what.

  • Thanks @mfalkvidd
    I'm not sure I understood your observation - probably I am missing something quite basic.

    I have a RasPi with Home Assistant installed (controller), with IP address, and I have connected to this RasPi an Arduino with the radio module - this is my serial controller.

    I would like to use also an ethernet gateway (in home assistant you can have more than one fateway), to receive signals of sensors in some remote rooms, and therefore I am using a W5100, NRF24L01, and an arduino (nano). I am asking through the code that this should have the IP address

    What is wrong with this setup?

  • Mod

    @Maurizio-Collu I don't see anything wrong with that. You're the one saying something is wrong 🙂

    Could you describe what you do when you try to find the W5100 gateway, what you expected to happen when you tried that, and what you experienced instead?