wiznet - USB device not Recognised

I've received my wiz550io so decided to install the latest wiznet espruino binary:

http://www.espruino.com/binaries/espruin­o_1v71_espruino_1r3_wiznet.bin

After installing my board is no-longer recognised as a USB device!

I've gone back to the latest standard binary and all is fine but I would like to get going with working on an http server!

Any ideas?

I'll try and have a look at this tomorrow - it could just be a build issue. I know I switched to a space-saving compile and the builds have been unreliable in the past.

Maybe try the 1v70 build?

Hm.

I've tried recent github wiznet builds, and they work without issue, as do post v71 wiznet bigram builds. So if there is a problem with this, it's a narrow window of effected builds...

@DrAzzy - yes, it would be. I think there's some issue with -Os on the compiles - and it's a nightmare to track down, because the second you change the build in any way the problem goes away.

Just downloaded the latest Wiznet build and it worked perfectly!

It was maybe just a build issue but if you made changes to fix - thanks.

Actually, maybe this is why some of my v71 wiznet bigram builds weren't working.

I thought it was due to my not having incorporated the changes to EspruinoBoard.py* in commit 91164f259c40d64b93b764ae44b488a57a277afe­ (which I don't understand the purpose of), since after taking those changes in, the builds started working.

*the way my script works is it clones the repo, then copies in the modified EspruinoBoard.py, and then builds. So I need to manually update it if anything is changed in EspruinoBoard.py

I did make some changes in Git, so they should be in the latest builds - glad it's working.

It appears I might have hit a bug in GCC. Sometimes it was randomly choosing to re-order accesses to the USB hardware registers (even though they were volatile). I posted on StackOverflow about it, but nobody seems to have a clue :)