Picamera get stuck when i use the command camera.close()

[Xelhas]

Hi!
I'm having some problems executing python scripts with the closing cam command. When i use raspistill everything its okay, but when I execute a python script containing these command, the cam stucks and didnt close (also when I execute scripts and the closing order in separate way?
Someone could have an idea what i'm doing wrong?

Thanks (and sorry if i'm having mistakes with english, hope you understand the issue)

[DirkS]

Are you using Python with the picamera module?

Post a (minimal) script that shows the problem.
Use code tags when posting it (viewtopic.php?f=32&t=84477)

[Xelhas]

Here it is (sorry again, i thougth these things wouldn't be too fast )

Code: Select all

from picamera import PiCamera
from time import sleep
from fractions import Fraction
camera = PiCamera()
	camera.sensor_mode = 3 
	camera.resolution = (2592, 1944)
	camera.iso = 800 
	camera.shutter_speed = 6000000
	camera.framerate = Fraction(1,6) 
	sleep(30)
	camera.exposure_mode = 'off'
   	camera.capture('dark.jpg')
   	camera.close() 

It seems that python is not closing after executing the order
And I also tried to add an exit at the end of the script with sys.exit() but it doesnt work.

Thanks another time

[6by9]

Test it without setting the long exposure time or sensor_mode. Everything takes a fair while with long exposures.

If you read the docs, then all examples will start with enabling preview, yet you haven't. I fail to see why you are therefore inserting the 30 second delay as I don't think it will do anything other than just wait doing nothing.

Actually it looks like things aren't being cleaned up tidily. When on 6 second exposures things take a long time, and it looks like some things may be timing out. I suspect that some ports aren't being disabled cleanly before ditching the component.
Inserting a 6 second delay seems to be vaguely reliable to ensure everything is idle.

Code: Select all

from picamera import PiCamera
from time import sleep
from fractions import Fraction
camera = PiCamera()
camera.sensor_mode = 3
camera.shutter_speed = 600000
camera.framerate = Fraction(1,6)
camera.resolution = (2592, 1944)
camera.iso = 800 
camera.start_preview()
sleep(30)
camera.exposure_mode = 'off'
camera.capture('dark.jpg')
camera.stop_preview()
sleep(6)
camera.close() 

[Xelhas]

Thank you, so much! It works