No DHCP offer with W5500 and nRF5340

RE: No DHCP offer with W5500 and nRF5340

Amira R. — Thu, 10 Apr 2025 00:16:42 GMT

It ended up being a layout mistake! The board was outsourced and the pins on the RJ45 connector were not connected correctly so no data was able to make it to the ethernet module. After correcting this, internet connection was immediate.

Thank you again!

RE: No DHCP offer with W5500 and nRF5340

Charlie — Tue, 25 Mar 2025 10:23:27 GMT

Hi Amira,

You're very welcome!

Sorry I couldn’t be of more help since I do not even have any W5500 HW on hand, but I wish you the best of luck with your development.

Please keep updateing the process and you may get hints form either us or other developers working with this setup.

Best regards,
Charlie

RE: No DHCP offer with W5500 and nRF5340

Amira R. — Mon, 24 Mar 2025 16:37:04 GMT

Hi Charlie,

Thank you for getting back to me! I did come across that post early on in my debugging efforts, but unfortunately their solution didn't work for me.

I figured support would be limited on this end, given that neither the W5500 nor its driver are Nordic products, but it was worth a shot! I also tried posting to the Zephyr github, but I was only redirected here since I'm using NCS, and I was offered no assistance unless I could recreate the problem with only upstream Zephyr. So your assistance (and patience) is appreciated.

I'm just gonna keep trying things and see if I can at least get some more information on what's happening, and I'll post here again if I find anything. I don't think there's much else I can ask from you, but again, thank you!

RE: No DHCP offer with W5500 and nRF5340

Charlie — Mon, 24 Mar 2025 12:50:13 GMT

Hi Amira,

Thanks for reaching out regarding your issue.

Unfortunately, the W5500 is not a Nordic product, so we do not provide official support for it.

However, I found a similar discussion in the following ticket where a developer shared their solution. Could you take a look and see if it helps resolve your issue?

(+) DHCPv4 client + Ethernet (W5500) Fails to work in SDK 2.4 - Nordic Q&A - Nordic DevZone - Nordic DevZone

Let me know if you need further assistance.

Best regards,

Charlie

RE: No DHCP offer with W5500 and nRF5340

Amira R. — Sat, 22 Mar 2025 00:58:36 GMT

Additionally, I've tried with both zephyr,random-mac-address and local-mac-address in the devicetree node for the W5500 module. I also tried manually adding the Client ID parameter (Option 61) to the DHCP Discover request (verified that it was successfully added with Wireshark), and still, no DHCP offer.