[gphoto-bugs] [ gphoto-Bugs-536012 ] Usability: Switch camera on automaticall

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Bugs item #536012, was opened at 2002-03-28 02:41
Message generated for change (Comment added) made by hfiguiere
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108874&aid=536012&group_id=8874

Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Fredrik (fredrikt)
Summary: Usability: Switch camera on automaticall

Initial Comment:
Make gtkam switch on the camera once it has switched
itself off. At the moment, once the camera has turned
itself off even switching it on does not work: images
can not be downloaded. Detecting the camera fixes this.

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>Comment By: Hubert Figuiere (hfiguiere)
Date: 2003-06-03 00:20

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I think issue has been adressed. Closing.

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Comment By: Lutz Müller (lutz)
Date: 2003-02-27 19:09

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Some cameras (i.e. my konica one) switch automatically off
after a timeout (i.e. inactivity / no communication during
255 seconds). Therefore, I send periodically
keep-alive-messages to avoid the switch-off. I don't know
about how other cameras behave.  

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Comment By: Stephen H. Westin (swestin)
Date: 2003-02-27 19:02

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For my USB Canon cameras, the automatic power-off means that the 
camera no longer appears as a USB device. I don't know how to 
address a nonexistent device to turn it back on. 
 
Was the original bug report aimed at a serial camera? I understand that 
these can be switched off through the serial port, and conceivably they 
could be switched back on as well. But I have no serial-capable Canon 
camera here to try with. 

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Comment By: Lutz Müller (lutz)
Date: 2002-05-07 00:11

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Ok, I added the necessary functionality to libgphoto2. What
needs to be done in the canon driver?

Add gp_camera_start_timeout in the camera_init function
pointing to this missing/yet-to-figure-out "keep-alive" command.

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Comment By: Fredrik (fredrikt)
Date: 2002-05-06 14:26

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what really should be done is to fix the sending of camera 
keep alive messages. i beleive those are sent/received via 
the interrupt USB endpoint only recently made accessible for 
camera librarys.

patch welcome.

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Comment By: Lutz Müller (lutz)
Date: 2002-05-04 07:54

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Hi Andree!

You have not been logged in while submitting this bug
report, therefore I lacked an e-mail address. Great that you
are still monitoring the bug. 

As your camera is a Canon PowerShot S40, I am handing over
the problem to a maintainer of the canon driver, the reason
being that the driver should automatically recognize a need
for reinitialization.

Lutz

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Comment By: Nobody/Anonymous (nobody)
Date: 2002-05-04 03:36

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This is with a Canon PowerShot S40.

I consider it quite weird to close a bug only because
information is missing. Why didn't you just drop me a line
and I would have filled you in?

It would be great if you could just reopen this bug. I'd be
more than happy to provide other information and test things
if necessary.

Best regards
Andree

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Comment By: Lutz Müller (lutz)
Date: 2002-05-03 18:53

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This needs to be fixed in the driver. As I don't know what
camera you have got, I can't assign this report to the right
person. Therefore, I am closing this bug report now.

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