Is PC remote control (via USB) possible ? - General Help and Assistance on using CHDK stable releases - CHDK Forum
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Is PC remote control (via USB) possible ?

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Offline ShacharWeis

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Is PC remote control (via USB) possible ?
« on: 17 / July / 2012, 16:25:08 »
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Hi.
I want to control one of Canon's newer P&S cameras from software running on Windows 7.
Canon's SDK no longer supports the P&S models.
Is this possible with CHDK ?
I need to see a live preview, trigger the shutter and start/stop video recording.

Best,
SW
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Offline msl

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Re: Is PC remote control (via USB) possible ?
« Reply #1 on: 17 / July / 2012, 16:55:29 »
Quote from: ShacharWeis on 17 / July / 2012, 16:25:08
Is this possible with CHDK ?

Yes, read more about the PTP extension: http://chdk.wikia.com/wiki/PTP_Extension

There are two PC applications:

chdkptp
ptpCamGui

msl
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Offline ShacharWeis

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Re: Is PC remote control (via USB) possible ?
« Reply #2 on: 17 / July / 2012, 17:11:10 »
Thanks,
I need this to work with my own software, is there some documentation about the PTP protocol ?
Any code samples ?
I can't find anything.

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Offline reyalp

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Re: Is PC remote control (via USB) possible ?
« Reply #3 on: 17 / July / 2012, 22:53:15 »
Quote from: ShacharWeis on 17 / July / 2012, 17:11:10
Thanks,
I need this to work with my own software, is there some documentation about the PTP protocol ?
The protocol is documented in the ptp.h header: http://trac.assembla.com/chdk/browser/trunk/core/ptp.h except for the live view (remote display) which is documented in live_view.h http://trac.assembla.com/chdk/browser/trunk/core/live_view.h

Note that for live view, you need to be using the 1.1 (trunk) version, not the 1.0 (stable) version of CHDK. 1.1 is currently in release candidate phase, so it should be stable enough for general use.

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Any code samples ?
Both the modified ptpcam used by ptpCamGui and chdkptp are open source. Only chdkptp implements the current live view protocol. The chdkptp source is available from the assembla project page http://www.assembla.com/spaces/chdkptp/trac_subversion_tool
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