WIZnet Developer Forum

WIZ850io - green and orange lights blink

I have a WIZ850io that won’t respond to SPI (verified via Saleae logica analyzer on the SPI line). I see quick blinks of Green-Orange, then a pause, and it repeats.

Is there a list of what this means?

(We have gone through nearly a dozen “bad” WIZ850io modules, sometimes swapping the part five or more times before we get one that works. Did we just get a bad batch?)

Thanks.

(Attachment of the SPI bus capture trying to initialize this part.)

UPDATE! This issue appears to have been related to the RST reset line but I would still like to know what the LED blinks indicate.

Hello

Green LED = LINKLED
Yellow LED = SPDLED

image

image
Thank you.

I get:

Green blink. Yellow blink.
Pause.
Green blink. Yellow blink.
Pause.
Repeat…

This is on power up, even with no software running talking to it by SPI.

When the program is not running.
The LED lights up because the Ethernet switch holds the link.

Thank you

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