Neil,
Thanks for showing interesting in the problem. The fact that different
hardware gave different results lead me and my colleague to believe a
hardware problem might be the cause. Because overo only tests the USB
OTG peripheral boot during a power on (not a reset), I was powering
the overo from a power strip which I could easily switch on/off.
However we determined that the power-strip switch was producing a lot
of noise when I would switch it and therefore would cause the transfer
of data over usb OTG to be slightly corrupted in different locations
each time I powered on the overo (hence the randomness of the errors).
Solution, hold down hard the power-strip switch while x-loader is
receiving files, or use a different power supply. Both work.
As far as why Summit and Tobi act different: the power supplies  (on
the board) are different and the perhaps the summit circuits are
better suited for power signal conditioning.
Both summit and Tobi with either 3730 and 3530 work fine in any
combination now.
Thanks,
Anthony

On Tue, Jul 3, 2012 at 2:51 PM, Neil MacMunn [via Gumstix]
<[hidden email]> wrote:

> Hi Anthony,
>
> Could you try Summit+3730 and Tobi+3530 for some additional data points?
>
> -
> Neil
>
> On Fri, Jun 29, 2012 at 12:35 PM, garland3 <[hidden email]> wrote:
>
>> Here is some more data that might help in solving the problem.
>>
>> I can full boot into Angstrom consistently over the USB OTG when using a
>> summit expansion board with OMAP3530-GP ES3.1, but I get all the errors
>> that
>> I described before when I was using a tobi expansion board with
>> OMAP3630/3730-GP ES2.1.
>>
>> The software that I'm sending to each overo is exactly the same, but the
>> results are different??
>>
>> Any ideas?
>>
>> Thanks
>>
>> Anthony
>>
>>
>>
>> --
>> View this message in context:
>> http://gumstix.8.n6.nabble.com/boot-error-for-USB-OTG-tp4964773p4964776.html
>> Sent from the Gumstix mailing list archive at Nabble.com.
>>
>>
>> ------------------------------------------------------------------------------
>> Live Security Virtual Conference
>> Exclusive live event will cover all the ways today's security and
>> threat landscape has changed and how IT managers can respond. Discussions
>> will include endpoint security, mobile security and the latest in malware
>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>> _______________________________________________
>> gumstix-users mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> gumstix-users mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
>
> ________________________________
> If you reply to this email, your message will be added to the discussion
> below:
> http://gumstix.8.n6.nabble.com/boot-error-for-USB-OTG-tp4964773p4964799.html
> To unsubscribe from boot error for USB OTG, click here.
> NAML


View this message in context: Re: boot error for USB OTG
Sent from the Gumstix mailing list archive at Nabble.com.