I am sorry to insist and to multiply posts on the forum. But I find no solution to my problem and it for almost 10 days.
I've bought the Rpi for remoting control of a camera (I use 3 canon : 7D, PowershotA95 and S100)
Ok here is what I've done
> Install newest version of gphoto2
It means that my Rpi got
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This version of gphoto2 is using the following software versions and options:
gphoto2 2.5.3 gcc, popt(m), exif, no cdk, no aa, no jpeg, no readline
libgphoto2 2.5.3.1 all camlibs, gcc, ltdl, EXIF
libgphoto2_port 0.10.0 gcc, ltdl, USB, serial without lockingI've followed the compiling and installing instructions you can find here
http://www.geekingabout.com/controlling ... 2-5-2.html
The same : https://github.com/gonzalo/gphoto2-updater
This method is usually working (http://www.raspberrypi.org/forum/viewto ... 41#p487541 and http://www.raspberrypi.org/phpBB3/viewt ... ts#p361575)
But still it does not work with me ! I tried with a Nikon D90 same I/O error
> Ok here's what the Rpi tells me
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pi@raspberrypi ~ $ gphoto2 --auto-detect
Model Port
----------------------------------------------------------
Canon EOS 7D usb:001,004 Code: Select all
pi@raspberrypi ~ $ gphoto2 --capture-image-and-download
*** Error ***
PTP I/O error
*** Error ***
An error occurred in the io-library ('Unspecified error'): No error description available
ERROR: Could not capture image.
ERROR: Could not capture.
*** Error ***
PTP I/O error
*** Error ***
An error occurred in the io-library ('Unspecified error'): No error description availableEach time, the same thing for over 10 days... I've been searching all over the web... Hopeless ?
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photo2 --debug
0.000837 main(2): ALWAYS INCLUDE THE FOLLOWING LINES WHEN SENDING DEBUG MESSAGES TO THE MAILING LIST:
0.002735 main(2): gphoto2 2.5.3
0.003002 main(2): gphoto2 has been compiled with the following options:
0.003132 main(2): + gcc (C compiler used)
0.003244 main(2): + popt (mandatory, for handling command-line parameters)
0.003353 main(2): + exif (for displaying EXIF information)
0.003459 main(2): + no cdk (for accessing configuration options)
0.003565 main(2): + no aa (for displaying live previews)
0.003670 main(2): + no jpeg (for displaying live previews in JPEG format)
0.003776 main(2): + no readline (for easy navigation in the shell)
0.004965 main(2): libgphoto2 2.5.3.1
0.006027 main(2): libgphoto2 has been compiled with the following options:
0.006176 main(2): + all camlibs
0.007990 main(2): + gcc (C compiler used)
0.008126 main(2): + ltdl (for portable loading of camlibs)
0.008234 main(2): + EXIF (for special handling of EXIF files)
0.008421 main(2): libgphoto2_port 0.10.0
0.008602 main(2): libgphoto2_port has been compiled with the following options:
0.008717 main(2): + gcc (C compiler used)
0.008823 main(2): + ltdl (for portable loading of camlibs)
0.008927 main(2): + USB (libusb1, for USB cameras)
0.009029 main(2): + serial (for serial cameras)
0.009128 main(2): + no resmgr (serial port access and locking)
0.009232 main(2): + no ttylock (serial port locking)
0.009335 main(2): + no lockdev (serial port locking)
0.009440 main(2): CAMLIBS env var not set, using compile-time default instead
0.009546 main(2): IOLIBS env var not set, using compile-time default instead
0.009884 setting/gphoto2-setting.c(2): Creating $HOME/.gphoto
0.010579 setting/gphoto2-setting.c(2): Loading settings from file "/home/pi/.gphoto/settings"
0.014350 gp-camera(2): Freeing camera...
0.014595 gphoto2-port(2): Freeing port...
0.014843 gphoto2-filesystem(2): resetting filesystem
0.018563 libgphoto2/gphoto2-filesys.c(2): Clearing fscache LRU list...
0.018707 libgphoto2/gphoto2-filesys.c(2): fscache LRU list already empty
0.018826 gphoto2-filesystem(2): Internally deleting all folders from '/'...
0.018962 gphoto2-filesystem(2): Lookup folder '/'...
0.019080 gphoto2-filesystem(2): Found! / is 0x1373b38
0.019193 gphoto2-filesystem(2): Recurse delete folder 0x1373b38//thanks very much If someone could help me...