Bug - Synch Delay time options do nothing - page 2 - General Discussion and Assistance - CHDK Forum
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Bug - Synch Delay time options do nothing

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Offline reyalp

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Re: Bug - Synch Delay time options do nothing
« Reply #10 on: 11 / September / 2011, 23:00:14 »
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Quote from: sayno2quat on 11 / September / 2011, 22:45:10
Took me a bit, but I got the source downloaded and my environment setup. Now I just have to find the code I need to change.

I have no idea how to submit a patch, if I end up getting the bug fixed. That's for later, though. Now, to code!
FWIW, if you want some realtime advice, you can sometimes find us in #chdk on irc.freenode.net

A630 actually users the generic version of platform/...kbd.c so changes there would affect a lot of cameras. But if it's a generic fix, that's a good thing I guess.
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Offline waterwingz

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Re: Bug - Synch Delay time options do nothing
« Reply #11 on: 12 / September / 2011, 07:37:29 »
Quote from: reyalp on 11 / September / 2011, 23:00:14
A630 actually users the generic version of platform/...kbd.c so changes there would affect a lot of cameras. But if it's a generic fix, that's a good thing I guess.

Of course, it would be easy to expand the A630 camera specific kbd.c file to look more like the A650 and delete the reference to the generic\kbd.c
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline vnd

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Re: Bug - Synch Delay time options do nothing
« Reply #12 on: 04 / December / 2011, 05:37:44 »
The main problem is that the delay loop speed is compiler dependent. New gcc even optimizes it out completely.

The attached patch fixes it for s95. A similar fix should be applied for other cameras too, but I can't test it.


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Offline waterwingz

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Re: Bug - Synch Delay time options do nothing
« Reply #13 on: 04 / December / 2011, 10:12:14 »
Quote from: vnd on 04 / December / 2011, 05:37:44
The main problem is that the delay loop speed is compiler dependent. New gcc even optimizes it out completely.

The attached patch fixes it for s95. A similar fix should be applied for other cameras too, but I can't test it.

Did you see this thread ?

http://chdk.setepontos.com/index.php?topic=7127.msg76626#msg76626

Lots of other broken things to think about in that code right now.

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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline vnd

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Re: Bug - Synch Delay time options do nothing
« Reply #14 on: 04 / December / 2011, 11:46:37 »
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Offline Alarik

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Re: Bug - Synch Delay time options do nothing
« Reply #15 on: 22 / June / 2012, 06:04:44 »
hi VND,

the patch you released is exactly what I would need,
how do i apply it?

thx
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Offline outslider

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Re: Bug - Synch Delay time options do nothing
« Reply #16 on: 22 / June / 2012, 06:15:45 »
You have to compile your own CHDK for applying patches. You'd need to have CHDK source.

If you have Windows machine you can simply use CHDK-Shell to compile CHDK. Check:

http://chdk.wikia.com/wiki/Compiling_CHDK_under_Windows
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Offline waterwingz

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Re: Bug - Synch Delay time options do nothing
« Reply #17 on: 22 / June / 2012, 07:38:34 »
Quote from: Alarik on 22 / June / 2012, 06:04:44
the patch you released is exactly what I would need,
how do i apply it ?
You probably want to look at the main development trunk of CHDK ( http://mighty-hoernsche.de/trunk/ )  rather than the stable version.  The USB code there was completely rewritten to be workable and understandable.   It also  incorporates the code from vnd's patch.

Documentation available here : USB_Remote_V2
« Last Edit: 22 / June / 2012, 08:08:48 by waterwingz »
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline Alarik

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Re: Bug - Synch Delay time options do nothing
« Reply #18 on: 22 / June / 2012, 08:49:47 »
thanks i tried it (build 1928)
but for strange reasons it seems that the ENABLE SYNCH feature does not work,
camera shoots at trigger pressure and not at trigger-release...

I tried all the combinations of tha available options but nothing...
Am I missing something?
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Offline waterwingz

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Re: Bug - Synch Delay time options do nothing
« Reply #19 on: 22 / June / 2012, 08:54:52 »
Quote from: Alarik on 22 / June / 2012, 08:49:47
thanks i tried it (build 1928)
but for strange reasons it seems that the ENABLE SYNCH feature does not work,
camera shoots at trigger pressure and not at trigger-release...

I tried all the combinations of tha available options but nothing...
Am I missing something?
Which version did you try ?

http://chdk.wikia.com/wiki/Downloads

Stable or Unstable ?  ( The same build # applies to both versions.)

What are you using for a USB switch device ?

Are you trying to use a script or the built-in functionality ?

And how exactly did you setup the option in the Remote Parameters menu ?
« Last Edit: 22 / June / 2012, 09:24:43 by waterwingz »
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Ported :   A1200    SD940   G10    Powershot N    G16
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