W5100 Sometimes Won't Connect After FW Upload

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i'm having persistent problems w5100 shields on dues.  of time, work fine.  but, when firmware upload, w5100 somehow gets state seems out lunch, , nothing short of power-cycling gets going again.  can repeatedly reset due, w5100 sits there single red led lit.  else in the  system works expected, , happening on numerous different sets of hardware, appears there happening in firmware upload process puts w5100 state cannot recover from.

anyone have ideas might going on, or how fix it?

regards,
ray l.

i never heard of possibility update firmware on wiznet5100 chips. datasheet says protocols hard-wired, wouldn't expect firmware update routine. have information this? can post link?


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > W5100 Sometimes Won't Connect After FW Upload


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