Copying files to camera

[inobotica]

i have captured and downloaded images from the camera successfully thanks to your python library for Pi, now i want to copy the photos from the raspberry to the camera again, the application that i am working is geotagging images, so i take the picture, download to /pi/ add exif data and i want to move back to the camera, i have checked the functions but i dont see a specific function that do it.

[jim-easterbrook]

I think gp_camera_folder_put_file() is the function you want. gp_file_open() should read your local file into a CameraFile object you can pass to gp_camera_folder_put_file().

[inobotica]

Hi,

I have been working with the functions that you recommended me, but i am having problem with the creation of CameraFile object, it seems that i am not creating a correct CameraFile object and the gp_file_open() is not reading it throwing an error "Argument 1 of type CameraFile ". How i create a CameraFile object correctly?

here is my code:

def file_mover(): camera_file = gp.gp_file_new() # Create a CameraFile object gp.gp_file_open(camera_file,name) # Pass the image (in RPi) to the CameraFile object gp.check_result(gp.gp_camera_put_file(camera,folder,camera_file,context)) # Save the image in NIKON S3700 SDcard

Thanks for the help,

[chrisimars]

Hi, I am trying to download files from the camera not upload. Thanks, Chris

[inobotica]

hi Chris,

use the capture-image.py example, you just have to change the target address of the file, in the line 45

gp.check_result(gp.gp_file_save(camera_file,'gphoto.jpg')) #this will save the gphoto.jpg in root of the pi

[jim-easterbrook]

Chris, please don't change the subject of an "issue". If you have found a different bug in python-gphoto2 you should create a new issue for it.

Daniel, the gp_file_new() function returns an integer error code and the CameraFile object. Use check_result() to strip the error code and return just the CameraFile object. (In the next release of python-gphoto2 I'll make gp_file_open() allocate and return a new CameraFile object. This would be more consistent with the other functions.)

[inobotica]

Jim thank you so much (for the help and the development of this library), now i am able to take pictures, modify them in RPi then save it back to the camera. This library is very usefull and easy to use.

[jim-easterbrook]

I've just released version 1.5.0 which has the changed gp_file_open() as mentioned above.

[inobotica]

Good, im going to upgrade it, i have been problems writing back the images to the camera sometimes appears a (-7) I/O problem, sometimes writes without problem, according to what i have researched it seems to see permission issues, may be you wonder why?

[jim-easterbrook]

Things that sometimes work and sometimes don't are hard to diagnose. The Raspberry Pi USB system has had problems in the past. If you can try a different sort of computer you might find it works OK. I don't think many people write images back to the camera, so this part of libgphoto2 might not be well tested.