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cancel retract timer

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Offline c_joerg

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cancel retract timer
« on: 20 / March / 2019, 07:08:44 »
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https://chdk.setepontos.com/index.php?topic=9969.msg139226#msg139226

Quote from: srsa_4c on 22 / January / 2019, 18:14:55
FWIW, I found something better. A function that cancels the retract timer.
Second function call after the "AC:SStoreLensT" or "AC:SStoreLens" log string.

Quote from: srsa_4c on 23 / January / 2019, 12:57:19
Quote from: c_joerg on 23 / January / 2019, 02:09:14
Should I found the functions here?
chdk/trunk/platform/sx50hs/sub/100c/funcs_by_xxx
Not yet.
Quote
What exactly I have to call on my SX50 (100c) in lua?
call_func_ptr(0xFF049EB4)
You can make a test script that only has that single line and execute it in playback mode (obviously, the lens has to be extended when you run the script).

The cancel of retract timer works very well. I would like to try this with my other cameras (G1x 101a, G1x 100e, S110 103a, SX230 101a) as well. I'm still not clear how I get the address…

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Offline srsa_4c

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Re: cancel retract timer
« Reply #1 on: 20 / March / 2019, 14:09:39 »
Quote from: c_joerg on 20 / March / 2019, 07:08:44
I would like to try this with my other cameras (G1x 101a, G1x 100e, S110 103a, SX230 101a) as well. I'm still not clear how I get the address…
I've attached a patch that contains the addresses for all supported DIGIC II ... 5 cameras. It's a text file, just search for your cam, for example g1x 100e:
Code: [Select]
Index: platform/g1x/sub/100e/funcs_by_address.csv
===================================================================
--- platform/g1x/sub/100e/funcs_by_address.csv (revision 5154)
+++ platform/g1x/sub/100e/funcs_by_address.csv (working copy)
@@ -595,6 +595,7 @@
 0xff0977ac,j_PTM_BackupUIProperty_FW
 0xff0977b4,PTM_RestoreUIProperty_FW
 0xff099ec4,UIFS_CancelStoreLensTimer_FW
+0xff099f1c,cancel_lens_retract_timer
 0xff09a0d4,PB2Rec
 0xff09a114,Rec2PB
 0xff09a978,task_InitFileModules

This could be turned into a feature, but I could not decide on my own how to implement it.
- The script wrapper could simply call this function: that would mean the script author would need to make sure the call is made after every rec->play transition.
- The above logic could be implemented in CHDK core. In this case, the script command would enable/disable the retract override.

Since I don't write any serious scripts, I'd need the opinion of others who do.

edit:
The method only works if the retract delay is set to 1 minute on the Canon UI.
« Last Edit: 20 / March / 2019, 14:11:56 by srsa_4c »
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Offline c_joerg

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Re: cancel retract timer
« Reply #2 on: 21 / March / 2019, 03:04:33 »
Quote from: srsa_4c on 20 / March / 2019, 14:09:39
I've attached a patch that contains the addresses for all supported DIGIC II ... 5 cameras.

Thanks, that's a big help….

Quote from: srsa_4c on 20 / March / 2019, 14:09:39
This could be turned into a feature,

I would definitely support that, although I can live with the current solution.

Quote from: srsa_4c on 20 / March / 2019, 14:09:39
The method only works if the retract delay is set to 1 minute on the Canon UI.

Thanks for the hint. But that makes sense…
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Offline reyalp

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Re: cancel retract timer
« Reply #3 on: 21 / March / 2019, 16:15:02 »
Quote from: srsa_4c on 20 / March / 2019, 14:09:39
This could be turned into a feature, but I could not decide on my own how to implement it.
This seems like a worthwhile feature.

Quote
- The script wrapper could simply call this function: that would mean the script author would need to make sure the call is made after every rec->play transition.
- The above logic could be implemented in CHDK core. In this case, the script command would enable/disable the retract override.

Since I don't write any serious scripts, I'd need the opinion of others who do.
My initial reaction is scripts using this would probably be controlling rec/play transitions anyway, so requiring them to call the function isn't much burden. It also keeps things simple.

OTOH, if the logic can be implemented simply and reliably in the core, that there would be some potential benefits:
* A script could set it an then exit. But this is also a potential negative, if not intended.
* It could also support a menu option like the "disable LCD off...", but this seems like a very limited use case that probably doesn't need a menu option.

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Offline srsa_4c

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Re: cancel retract timer
« Reply #4 on: 21 / March / 2019, 19:07:51 »
Quote from: reyalp on 21 / March / 2019, 16:15:02
if the logic can be implemented simply and reliably in the core
As I wrote above, we probably can't do much if the user chose '0 sec.' as lens retract delay on the Canon UI. We could 'fix' that by setting the retract param ourselves, but 1) we don't know the related param on all cams, 2) we don't set params. So, the method is less than reliable.
When implemented in core, though, chdkptp could make use of it (along with other stuff, like levent 4484 and disabling power save in rec mode).

BTW, despite the reliability issue, disabling the retract timer has a benefit over the other method (setting lens outside flag): the cam won't leave the lens out when shutting down.
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Offline waterwingz

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Re: cancel retract timer
« Reply #5 on: 23 / March / 2019, 17:43:48 »
Quote from: reyalp on 21 / March / 2019, 16:15:02
Quote from: srsa_4c on 20 / March / 2019, 14:09:39
- The script wrapper could simply call this function: that would mean the script author would need to make sure the call is made after every rec->play transition.
- The above logic could be implemented in CHDK core. In this case, the script command would enable/disable the retract override.

Since I don't write any serious scripts, I'd need the opinion of others who do.
My initial reaction is scripts using this would probably be controlling rec/play transitions anyway, so requiring them to call the function isn't much burden. It also keeps things simple.
Simple is good. As long as the necessary sequence is documented.

Quote
It could also support a menu option like the "disable LCD off...", but this seems like a very limited use case that probably doesn't need a menu option.
Agreed on the limited use case.  I can't see of any reason to do this that does not involve running a script. Well, I suppose someone wanting their camera instantly ready to shoot but also concerned about battery life might find a use for it.
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Offline c_joerg

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Re: cancel retract timer
« Reply #6 on: 24 / March / 2019, 02:30:26 »
Quote from: waterwingz on 23 / March / 2019, 17:43:48
I can't see of any reason to do this that does not involve running a script.
Especially with my last recordings in the macro range, it was necessary to control the focus in the playback. For this it was necessary to take some test shots and then to control them. When then the lens retracts, then you can start over again. Since a setting in the menu would be helpful.
Quote from: waterwingz on 23 / March / 2019, 17:43:48
but also concerned about battery life might find a use for it.
For most shots, I am more concerned by the resulting sensor temperatures (increase in noise) than by the battery life.
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Offline c_joerg

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Re: cancel retract timer
« Reply #7 on: 06 / May / 2021, 12:38:15 »
Because of the 24-day problem…
https://chdk.setepontos.com/index.php?topic=13714.0
Would the following solution also work?
You switch to recording mode every 55s and briefly press the shutter button halfway
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Offline reyalp

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Re: cancel retract timer
« Reply #8 on: 08 / May / 2021, 13:45:02 »
Quote from: c_joerg on 06 / May / 2021, 12:38:15
Because of the 24-day problem…
https://chdk.setepontos.com/index.php?topic=13714.0
Would the following solution also work?
You switch to recording mode every 55s and briefly press the shutter button halfway
That would probably prevent lens retract, but my recommendation would be not to run the camera for 24 days. It is very, very likely that CHDK and/or the Canon firmware misbehaves, in subtle ways if not obvious ones.
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Offline c_joerg

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Re: cancel retract timer
« Reply #9 on: 12 / May / 2021, 04:54:55 »
Here someone made a long time lapse over a year with a G1 X. Interval is 20 minutes. The wobble comes from constantly extending the lens. Stabilization did not improve that either. The script was not described. With such time lapses you have to prevent retraction...

https://forum.lrtimelapse.com/Thread-langzeit-workflow-filter

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