DHCP ignoring replies

[ntruchsess]

DHCP ignoring replies

[ntruchsess]

That is a bit strange as this is known to work since I enabled broadcast-receival on enc28J60-chip on Oct. 4th 2013:
https://github.com/ntruchsess/arduino_uip/blame/160df5327978405713cea74a22cadab71d52d7d5/utility/Enc28J60Network.cpp#L109

you might want to capture the packets using Wireshark and upload to http://www.cloudshark.org/ so I can compare bitwise to what my setup produces.

[HugoDamme]

Here you go: https://www.cloudshark.org/captures/46ecfd204d4a
https://www.cloudshark.org/captures/a66eecc476aa
https://www.cloudshark.org/captures/590a4ad3ecb5

I made several captures since the beginning sequence is not always the same, even though I don't know if it's relevant with what is wrong.

Hope it helps !

[ntruchsess]

just to let you know, I won't have time to work on this before Apr. 28th...

[HugoDamme]

Not a problem, take your time.
I am not expecting anything, just hope to help and understand if it's a bug
:)

[ntruchsess]

Hi, I'm back :-)

packages look all good. But I remember there can be an issue with the compiler not including the memory that contains the initialization of static variables into the hexfile. Requires the parameter '-j .data' (or .rodata, not sure where static const will be placed) in the options-list of avr-objcopy. How do you build the code?

[HugoDamme]

I'll check how the code is built this evening and keep you in touch.

[HugoDamme]

The objcopy invocation is the following : "/usr/bin/avr-objcopy -O ihex -R .eeprom build/cli-ethernet.elf build-cli/ethernet.hex".

Do you think removing the .eeprom section can cause the trouble ?

[HugoDamme]

Ok, I had some time to dig into the problem, and found out this is just a simple timeout.
As you can see on the captures, my DHCP sends ACK 5+ seconds after the request, while in the library the timeout value is set to 4s.
Changing the default value to 6s makes the whole thing work.

Anyway, thanks for your time, this library is great !

[ntruchsess]

closing as this got solved