[Elphel-support] Synchronizing with an external flash

[Eric Boudrand]

Hi,

When I set :
TRIG = 4
TRIG_PERIOD = 1
TRIG_CONDITION = 0
TRIG_OUT = 0x800000
I lose http connection to the camvc.html. Ping is working. I can restart
the camera, but the settings are not kept. Any idea ?

Regards.

Éric Boudrand



Le mardi 24 juillet 2012 à 12:12 +0200, Alexandre Poltorak a écrit :
> Hi Eric,
> 
> TRIG_PERIOD - defines FPS (1/frame period; FPS = 96000000 / TRIG_PERIOD)
> Example: 3840000 [decimal] for 25FPS
> 
> Best regards,
> Alexandre
> 
> ----- Mail original -----
> | De: "Eric Boudrand" <dev at boudrand.net>
> | À: "Oleg" <support-list at support.elphel.com>
> | Envoyé: Mardi 24 Juillet 2012 11:05:10
> | Objet: Re: [Elphel-support] Synchronizing with an external flash
> | 
> | Hi Oleg
> | 
> | > You might have seen the schematics -
> | > http://wiki.elphel.com/images/9/9a/10369a.pdf
> | > 
> | I haven't seen it. Thanks.
> | 
> | > So, you get 5V only on the PIN 4 of J15. TRIG_OUT=0x800000.
> | 
> | Ok. I'am using this now. I have resolder the cable and I got 5V on
> | the
> | output despite the fact I made a mistake in the configuration. I set
> | 0x800000 in decimal value of TRIG_OUT.
> | 
> | > PINs 2 & 3 need an external power source. They are galvanically
> | > decoupled with the camera's circuitry. GPIO[10] controls a diod.
> | > So if you would like to use PIN2 you should connect: V+=>PIN3,
> | > PIN2=>FLASH=>GND.
> | > 
> | > TRIG_OUT should be 0x200000. Each GPIO has 2 bits in this register.
> | > You probably saw this page as well -
> | > http://wiki.elphel.com/index.php?title=Trigger
> | > 
> | I have read this page. But, it is not clear. I do not understand how
> | TRIG_OUT is computed. I will use the values from the page.
> | 
> | Concerning TRIG_PERIOD, if I set 0x500, does this value means 1280
> | sec ?
> | 
> | Regards.
> | 
> | Éric Boudrand
> | 
> | 
> | 
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