Verify w5500 chip properly (IDFGH-9158)

[reinismu]

Datasheet says that 0x4 is only value returned. We should verify that we got correct one.

Note: Currently trying to make W5500 work using esp-idf-svc in rust. SPI returns garbage data, but no clear error message is returned. So would be nice if we failed fast here.

[CLAassistant]

All committers have signed the CLA.

[kostaond]

Thank you for the contribution. I just left few minor comments. Please have a look.

[kostaond]

Thanks for the update. Could you also please squash the commits into one to follow contribution rules?

[suda-morris]

sha=bb2f346e55f484edc50f68cb26d164d8a79bcf39

[espzav]

Hi @reinismu, please, I have the issue with ethernet MAC W5500 on the latest master (after this PR). I have board with this SPI ethernet chip and it is working right. But after updated IDF to latest master, it fails when initilization - read chip ID returns 0x0 instead of 0x4. Please, could you help me, where can be a problem?

[reinismu]

Hi @espzav,
Interesting. Datasheet does say that it will always return 0x4.
I wonder if there are different W5500 chips. What is your w5500 part number?

[espzav]

Hi @reinismu, I bought this: https://www.tme.eu/cz/en/details/w5500/ethernet-interfaces-integrated-circuits/wiznet/ (I can try another board later, which was assmbled in JLCPCB)

[reinismu]

They link to the same datasheet where it mentions that 0x4 is the returned version.
You could try writing simple program that just reads the version register and see what happens. Maybe commands before corrupt it.

Did you check these discussions?
https://forum.wiznet.io/t/topic/5595
https://forum.wiznet.io/t/topic/9523

[espzav]

Thank you, I will try it and check the reset state.

[espzav]

Hi @reinismu,
I tried reset and still returns 0x0. But when I put 100ms delay before ID check, it works!