WIZnet Developer Forum

W5500 does not answer on SPI

Hi I got a really strange problem with the w5500 Chip.
I Started working on a firmware where I connect to a webserver and send and receive some data.
A long time this works. Since some weeks I can’t get any Answer from the W5500 Chip.

I Changed near to 20chips on 10 different PCB’s. I went back to the first version and compared it with the latest one but I couldn’t see any difference at all.

I Checked too how the commuinication looks like and that looks like the same as the ones which a working.

Does anyone has a guess as to what this might be?

Here is the other screenshot

This screenshot is with the same board just with the older Firmware

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