2

I wish to create a rudimentary ethernet in/out - switch/hub where I can (sort of) daisy chain my boards. (I don't wish to use a ethernet switch/router/hub)

  • One port would be acting as server
  • The other would be acting as a client (and forward any messages received on the first port after some processing/modification)

I am using an STM32 Bluepill with 2 Mini w5500 Modules (adafruit) connected via SPI. Nothing else is connected to SPI. All the other GPIOs are connected to relay drivers.

I use the Ethernet library. I have made sure they are connected to different CS pins and I have tried to assign Ethernet.init(); before doing anything with specific Ethernet modules but that keeps disconnecting and is working very unreliably.

I understand that some modification in the library might be needed (I, by no means could figure out how and what).

References:

https://forum.arduino.cc/t/2-network-shields/111509 https://forum.arduino.cc/t/connect-multiple-ethernet-shields-to-arduino-uno-using-spi/284008/16

But no one seems to have gotten it to work. Please help.

Improve this question
4
  • 2
    it is not possible with the Arduino Ethernet library
    – Juraj ♦
    Jul 25 at 11:43
  • Thanks @Juraj, I realized the same. Is there another way or has anyone modified this library to achieve this?
    – Ohbhatt
    Jul 26 at 8:23
  • I would use a hub or Ethernet splitters. Ethernet wiring is a bus, but for practical reasons the bus was moved into hubs and with that the topology looks like a start topology. Then switches added optimized packets routing. en.wikipedia.org/wiki/Ethernet#Evolution
    – Juraj ♦
    Jul 26 at 9:00
  • @Juraj Alright then, I feel it would be worth someone's while to modify the library for this, but for now I am convinced that the Arduino ethernet library isn't going to do it.
    – Ohbhatt
    Jul 26 at 16:05

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.