WIZ850io module (W5500) not responding to any SPI read request.
Ethernet Chips
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RE: WIZ850io module (W5500) not responding to any SPI read request.
by JustDavid ·
When I had this same problem it was because my 4-pin crystal was installed 90° off. The N/C pins were connected to where the crystal pins should have been.
Just David
RE: RE: WIZ850io module (W5500) not responding to any SPI read request.
by gtrevi ·
Thanks for the feedback… unfortunately the HW should be OK, it’s a genuine WIZ850io module bought from AVNET, and all 3 of them behave the same.
RE: WIZ850io module (W5500) not responding to any SPI read request.
by gtrevi ·
Update: I gave up and returned the modules for replacements, and the replacements now work (except one still…). Wondering about the production quality of the WIZ850io modules.