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Using PTP on Linux

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Offline dbldash

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Using PTP on Linux
« on: 23 / June / 2012, 10:49:37 »
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Hi, I'm using Debian Squeeze on my Raspberry Pi, and would like to get PTP working with my SX10. I've used chdkptp on my Windows machine before with no problems, but having compiled ptpcam on Linux I can't find out how to get it to recognise the camera.

On Windows there was a wizard to create a ".inf" file so that libusb would work with the camera. I'm fine with using terminal commands instead on Linux - I just don't know which to run to get this working!
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Offline waterwingz

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Re: Using PTP on Linux
« Reply #1 on: 23 / June / 2012, 10:57:47 »
I have chdkptp working on my raspberry pi.

I created a build environment on the pi itself,  used svn to download the chdkptp code and other needed folders and compiled it on the pi.

I was able to build on both the Arch linux and Debian versions.  However, I was not able to get the Arch linux version for the pi to work (segfault when calling USB library routines) . The Debian version does.

Note that I have not tried to get the GUI version or liveview working yet.   CLI only at this point.

Not sure where you are stuck ?


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Offline dbldash

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Re: Using PTP on Linux
« Reply #2 on: 23 / June / 2012, 11:03:09 »
Hi waterwingz. I compiled ptpcam using make after downloading it from the chdkde assembla page, and I've now got an executable called ptpcam. However, when I run

Code: [Select]
ptpcam --chdk
in the terminal, I get

Code: [Select]
ERROR: Could not open session!
I mentioned that on Windows I had to run the libusb wizard first because I'm not sure if I have to do something similar on Linux to get this working.
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Offline waterwingz

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Re: Using PTP on Linux
« Reply #3 on: 23 / June / 2012, 11:23:51 »
Quote from: dbldash on 23 / June / 2012, 11:03:09
I compiled ptpcam using make after downloading it from the chdkde assembla page, and I've now got an executable called ptpcam.
I've never used ptpcam so I really can't help much there

Quote
However, when I run
Code: [Select]
ptpcam --chdk in the terminal, I get
Code: [Select]
ERROR: Could not open session!I mentioned that on Windows I had to run the libusb wizard first because I'm not sure if I have to do something similar on Linux to get this working.
So are you trying to get this running on your raspberry pi or your main computer ?
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Offline dbldash

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Re: Using PTP on Linux
« Reply #4 on: 23 / June / 2012, 11:34:52 »
Quote from: waterwingz on 23 / June / 2012, 11:23:51
I've never used ptpcam so I really can't help much there

I started off trying to compile chdkptp but I couldn't find a "makefile" and was getting errors running the shell scripts it came with. This may be because I didn't download it using svn and I'm a bit of a newbie at compiling on Linux. Please could you recommend a good svn client and I'll try chdkptp again?

Quote from: waterwingz on 23 / June / 2012, 11:23:51
So are you trying to get this running on your raspberry pi or your main computer ?

This is on the Raspberry Pi that I ran these commands.
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Offline waterwingz

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Re: Using PTP on Linux
« Reply #5 on: 23 / June / 2012, 11:49:32 »
Quote from: dbldash on 23 / June / 2012, 11:34:52
I started off trying to compile chdkptp but I couldn't find a "makefile" and was getting errors running the shell scripts it came with. This may be because I didn't download it using svn and I'm a bit of a newbie at compiling on Linux.
Assuming you are using the Debian version of linux on your pi,  then I think you need to do a :

apt-get install subversion

That gets you svn commands.

To get chdkptp you then enter

snv co  http://subversion.assembla.com/svn/chdkptp/
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Offline dbldash

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Re: Using PTP on Linux
« Reply #6 on: 23 / June / 2012, 12:47:22 »
Thanks for all your help and sorry for asking some "newbie" style questions!

I don't know what I was doing with ptpcam at first because when I ran it again it connected to the camera, but the camera wouldn't respond to any commands. I then tried running the "trunk" build instead of the "reyalp-ptp-live" build I was running, and it worked! (I think this might be because version 2.3 of PTP is too new for ptpcam, whereas 2.1 was fine, but I'm not sure).

Anyway, I've just installed SVN and downloaded the chdkptp source code, so I'll compile that later and hopefully get it up and running.

Thanks again :)
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