[Gta04-owner] gta04 board can boot only outside freerunner case

[Dr. H. Nikolaus Schaller]

Am 30.03.2012 um 19:55 schrieb Belisko Marek:

> On Fri, Mar 30, 2012 at 7:44 PM, Dr. H. Nikolaus Schaller
> <hns at goldelico.com> wrote:
>> 
>> Am 30.03.2012 um 19:29 schrieb Belisko Marek:
>> 
>>> On Fri, Mar 30, 2012 at 7:16 PM, Dr. H. Nikolaus Schaller
>>> <hns at goldelico.com> wrote:
>>>> 
>>>> Am 30.03.2012 um 19:07 schrieb Belisko Marek:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> I have strange problem.
>>>>> I replace free runner board with gta04 board according manual.
>>>>> All steps was fine. Before putting back to case I verify it can boot
>>>>> from flash (just plug battery + usb)
>>>>> and I can see pinguin on display so seems to be fine.
>>>>> 
>>>>> Then I put board and display back to free runner case. When again try
>>>>> to start I got just white display
>>>>> and no console output. Any hints what could I check and what could
>>>>> cause problems?
>>>> 
>>>> Do you have a SD card installed?
>>> No SD card installed, just want to boot existing image from flash.
>>> Currently don't
>>> have converted from SD to uSD so can't verify that option.
>> 
>> Well, it should also work without. It is just that if the AUX button is pressed
>> and a non-working SD card would have been inserted, this could happen.
> Will try to investigate, but for now I can live with only board which is outside
> box.
>> 
>>>> 
>>>> The case sometimes may "press" the AUX/User button and this influences
>>>> the boot sequence. I remember that there was at least one who reported
>>>> and solved a similar problem (Lukas?).
>>> Maybe you're right. But when I put it ti case I don't close it
>>> completely so I have serial
>>> console connected but there is no output (just white display)
>> 
>> Not even a "60" message?
>> 
>> hm. This indicates that there might be a short circuit somewhere. Maybe
>> the metal backside of the display is being pressed down too much when
>> the display cover is installed?
> Hmm no I don't think so. I don't have top cover installed it occurred
> when just plug
> to bottom cover part.

Ah, that is more strange.

> 
> P.S.: Because for kernel development purposes it's not so easy every time when
> new kernel must be tested unplug-copy-plug sd card and it is very time consuming
> could anybody share what is standard procedure? I was thinking about
> DFU but not sure what
> is status for gta04.

DFU was a GTA01/02 U-Boot extension that has not made its way into mainstram
or BeagleBoard U-Boot (at least until last time we did major U-Boot upgrades).
I think everyone did focus on Qi and nobody did care about upstreaming.

I usually boot from SD (or NAND if the kernel on SD is severely broken) and 
can then read/write the kernel in /boot/uImage. So I rarely have to switch the SD.

And development of many drivers can be done in module mode, i.e. the system
remains bootable.


>> 
>>>> 
>>>> If you have a RS232 cable you could also check the console output.
>>>> 
>>> 
>>>> Well, this is not that easy if you want to close the case. But:
>>>> 
>>>> * don't install the internal GPS antenna
>>>> * insert the RS232 cable from the backside through the GPS antenna hole
>>>> * insert the GTA04 PCB
>>>> * connect the cable
>>>> * close the front cover (but take care not to shear off the RS232 cable)
>>>> 
>>>> Then you can insert a battery and look at the RS232 console.
>>>> 
>>>> Nikolaus
>>>> 
>>>> _______________________________________________
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>>>> Gta04-owner at goldelico.com
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>>> 
>>> regards,
>>> 
>>> marek
>>> 
>>> --
>>> as simple and primitive as possible
>>> -------------------------------------------------
>>> Marek Belisko - OPEN-NANDRA
>>> Freelance Developer
>>> 
>>> Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
>>> Tel: +421 915 052 184
>>> skype: marekwhite
>>> twitter: #opennandra
>>> web: http://open-nandra.com
>>> _______________________________________________
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>>> Gta04-owner at goldelico.com
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>> 
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> 
> regards,
> 
> marek
> 
> -- 
> as simple and primitive as possible
> -------------------------------------------------
> Marek Belisko - OPEN-NANDRA
> Freelance Developer
> 
> Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
> Tel: +421 915 052 184
> skype: marekwhite
> twitter: #opennandra
> web: http://open-nandra.com
> _______________________________________________
> Gta04-owner mailing list
> Gta04-owner at goldelico.com
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