On Friday, April 24, 2015 at 2:09:38 AM UTC+10, Bit Pusher wrote:
>
> I have found a reproducible boot freeze (on two boards); could someone 
> else possibly check; it's very easy to try.
>

Simply DO NOT use GPIO2-6 to GPIO2-15 for inputs until AFTER the system has 
booted up. How do I know this?? ..........
(GPIO2-26 to GPIO2-31 are not exposed to P8 or P9.)

Fortunately for me it was just a matter of removing all 6 8 way resnets (48 
inputs)  and just use the internal pull ups making sure that the sensors 
attached to those pins do not trigger until after the boot, reasonably easy 
with my project.

I had used the same pins for outputs in another project but had no idea of 
the consequences of using them as input, easy to say Read The Fabulous 
Manual but there is so much that one cannot possibly foresee all. But I'm 
sure I never forget the lesson learned. :-)

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