[Elphel-support] hi from kinoraw

[Andrey Filippov]

On Tue, Jun 5, 2012 at 1:48 PM, Carlos Padial <palidoestudio2 at gmail.com>wrote:

> ok, tomorrow we will do a new round of tests and wrote down a table.
>
> I have a few questions:
> about "ifconfig" and "mii-diag" output?
>
> i have to use this commands in the ttylog? when i put commands there,
> nothing seems to happend...
>

Carlos,
Do you have the serial cable connected? It is a 6-pin connector on the side
of the camera under the small cover. You should have a gray cable and
adapter for it,  On the computer side you may use minicom or any other
terminal emulator.This console works even if the network is unavailable, it
also show all output that used printk() in the kernel drivers.

>
> > Could you also check the network statistics - packets/lost packets?
> > Do you have lost packets before streaming? After?
>
> can you provide us more instructions about how to check this?


Just try these commands over the serial console (not the network).

>
>
> >if the camera is not streaming, just connected - will it continue to be
> accessible after a long time?
>
> need to check this...
>
>
> >What about recording to the external SATA HDD - does it work? Or also
> fails?
>
> it works fine if i record without stream (at any resolution), if i run one
> of them while the other is running then it breaks...


You mean you are having problems are recording and streaming are running
simultaneously? Yes that can be an issue as the CPU resources of the camera
are limited. There is a cure but that would need writing some additional
code that I never did myself, I only provided the driver-level support and
made provisions in camogm. The streamer has to be modified to use it.

The idea is that camogm can make it's circular buffer read pointer visible
to other applications and so the streamer should be "nice" - each time when
it is awaken after the next frame is available, it should compare the
camogm's ("global") read pointer against the buffer write pointer and if
the recorder is dangerously close to buffer overrun condition, skip the
frame (do not stream it). Additionally it can stream only each N-th frame
while recording all of them.

Andrey



>
>
> 2012/6/5 Andrey Filippov <andrey at elphel.com>
>
>> Hello Carlos,
>>
>> Shipping camera back and fourth can be expensive, so I'm trying to make
>> sure it can be a hardware problem related to fixing the 10369 board with
>> the connector that fell off. I can not think of any type of failure that
>> can manifest itself in that way. So I would try to make a table - what
>> works (always)  and what does not. Can you make such table, using the
>> previous results and add some more?
>> I would test streaming and really low data rate (low fps and/or image
>> quality) with the serial port of the camera connected to the camera and
>> monitored, and streamer (str) killed and restarted from console (so output,
>> if any will go to console). If the streamer will fail - what happens to the
>> camera:
>> 1 - the serial console connection will be dead,
>> 2 - serial console will continue to be operational, but no network
>> connection (can not ping camera from outside)
>> 3 - console alive, network alive
>> In the case of the network down - what will the "ifconfig" and "mii-diag"
>> output?
>>
>> Another test - if the camera is not streaming, just connected - will it
>> continue to be accessible after a long time?
>> What about recording to the external SATA HDD - does it work? Or also
>> fails?
>>
>> Andrey
>>
>>
>>
>>
>> On Tue, Jun 5, 2012 at 11:14 AM, Carlos Padial <info at kinoraw.net> wrote:
>>
>>>   Dear Andrey,
>>>
>>> we hope everything's fine around there. We get in touch with you because
>>> we've tried to sort out the problems we've had. As you suggested we would
>>> like to send it to Utah so you could check and fix it.
>>>
>>> We hope you can help us with this. Could you please specify the shipment
>>> details (customs procedures and others)? Should we send just the camera
>>> body in its case?
>>>
>>> Thank you very much for all your support
>>>
>>>  Best wishes
>>>
>>>
>>>
>>>
>>
>
>
> --
> Carlos Padial
> surreal.asturnazari.es
>
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