On Tue, Feb 20, 2018 at 12:07:56AM +0300, Alexey Kryukov wrote: > Hi, > > I am trying to get EOS M2 supported in libgphoto2. Basically the camera > looks perfectly controllable over USB (better than its descendants), > but some tweaks are needed, and I'd like to discuss them here before > submitting a patch. > > First of all, the camera requires regetting device info after setting > the remote mode to 0x15. For this reason currently the shooting related > commands work only every other time: get device info while the remote > mode is still 0 -- set the remote mode to 0x15 -- report caption not > supported -- exit -- get device info, this time with the remote mode > 0x15 -- successfully capture an image -- reset the remote mode to 0, > and so on. Of course there is no problem to insert one more > ptp_getdeviceinfo() call into camera_init(), but this doesn't look > optimal, as the function is later called once more from > camera_prepare_canon_eos_capture(). So might it be possible to somehow > minimize the number of those calls?
But this is the way I would go here. Can you just try? FWIW, do you get an PTP event of PTP_EC_DeviceInfoChanged (4008) ? > Second, when accessing the M2 I get multiple error messages: > "halfsize 0 is not expected 278". It seems the camera indeed > produces a useless PTP_DPC_CANON_EOS_FocusInfoEx field, filled > with zeroes. Since this is not actually an error and the message > is quite irritating, I'd like to know if it would be OK to disable it > just for one particular camera. If this annoying, just comment it out. > Also, my previous patch for EOS M non-focus doesn't work here and needs > to be updated. It would be interesting to have a look at logs of other > EOS M* cameras to see if they behave differently at this point. :/ I just have an M10 for testing. Ciao, Marcus ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Gphoto-devel mailing list Gphoto-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gphoto-devel
