I'm trying to make a time lapse using crontab to manage time intervals. The camera I use is an arducam Autofocus imx519. The libcamera-still command works normally when run via terminal. But when I run the following script via crontab the line containing libcamera-still is not executed.
Here my python script with privileges u+x:
#!/usr/bin/python3 import os import subprocess from pijuice import PiJuice pj = PiJuice(1,0x14) # Get battery level and write statement to log batteryLevel = pj.status.GetChargeLevel() os.system("date=$(date); text=$(echo ' PICTURE " + str(batteryLevel) + "'); echo $date$text >> ~/log") # Get date and separate day and time date = subprocess.getoutput("date +%F") time = subprocess.getoutput("date +%H:%M") # Take picture out = os.system("libcamera-still -o ~/Pictures/"+date+"/"+time+".jpg --autofocus >> test.txt") os.system("echo '" + str(out) + "' >> test.txt") and my crontab for testing looks like this:
* * * * * ./script.py The script is running, the logs are taken correctly, but the line containing libcamera-still is not running (no output written to test.txt). The line os.system("echo '" + str(out) + "' >> test.txt") always writes 32512 (and I don't know for what it stands for).
When I run the script via terminal ( $ ./script.py ) it works perfectly, it writes 0 to test.txt and returns the following lines:
Preview window unavailable [11:47:51.665744000] [1201] INFO Camera camera_manager.cpp:293 libcamera v0.0.0 [11:47:51.715527000] [1212] WARN CameraSensorProperties camera_sensor_properties.cpp:141 No static properties available for 'imx519' [11:47:51.716860000] [1212] WARN CameraSensorProperties camera_sensor_properties.cpp:143 Please consider updating the camera sensor properties database [11:47:51.718001000] [1212] ERROR CameraSensor camera_sensor.cpp:551 'imx519 10-001a': Camera sensor does not support test pattern modes. [11:47:51.852132000] [1212] WARN RPI raspberrypi.cpp:1233 Mismatch between Unicam and CamHelper for embedded data usage! [11:47:51.856864000] [1212] ERROR DelayedControls delayed_controls.cpp:87 Delay request for control id 0x009a090a but control is not exposed by device /dev/v4l-subdev0 [11:47:51.861199000] [1212] INFO RPI raspberrypi.cpp:1356 Registered camera /base/soc/i2c0mux/i2c@1/imx519@1a to Unicam device /dev/media3 and ISP device /dev/media0 [11:47:51.866415000] [1201] INFO Camera camera.cpp:1028 configuring streams: (0) 2328x1748-YUV420 [11:47:51.871248000] [1212] INFO RPI raspberrypi.cpp:751 Sensor: /base/soc/i2c0mux/i2c@1/imx519@1a - Selected sensor format: 2328x1748-SRGGB10_1X10 - Selected unicam format: 2328x1748-pRAA [11:47:51.983735000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AfTrigger = 1 [11:47:51.985183000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Saturation = 1.000000 [11:47:51.986450000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Contrast = 1.000000 [11:47:51.987372000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Brightness = 0.000000 [11:47:51.989790000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AwbMode = 0 [11:47:51.991590000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Sharpness = 1.000000 [11:47:51.993349000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: ExposureValue = 0.000000 [11:47:51.994819000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AeExposureMode = 0 [11:47:51.995729000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: FrameDurationLimits = [ 33333, 33333 ] [11:47:51.996677000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AeMeteringMode = 0 [11:47:52.000276000] [1219] INFO IPARPI raspberrypi.cpp:666 Request ctrl: NoiseReductionMode = 3 [11:47:57.258585000] [1201] INFO Camera camera.cpp:1028 configuring streams: (0) 4656x3496-YUV420 (1) 4656x3496-SRGGB10_CSI2P [11:47:57.267650000] [1212] INFO RPI raspberrypi.cpp:751 Sensor: /base/soc/i2c0mux/i2c@1/imx519@1a - Selected sensor format: 4656x3496-SRGGB10_1X10 - Selected unicam format: 4656x3496-pRAA [11:47:57.505010000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AfTrigger = 1 [11:47:57.506463000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Saturation = 1.000000 [11:47:57.507638000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Contrast = 1.000000 [11:47:57.508547000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Brightness = 0.000000 [11:47:57.511001000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AwbMode = 0 [11:47:57.513578000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: Sharpness = 1.000000 [11:47:57.516040000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: ExposureValue = 0.000000 [11:47:57.517747000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AeExposureMode = 0 [11:47:57.519464000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: FrameDurationLimits = [ 100, 1000000000 ] [11:47:57.520646000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: AeMeteringMode = 0 [11:47:57.520991000] [1229] INFO IPARPI raspberrypi.cpp:666 Request ctrl: NoiseReductionMode = 2 Still capture image received I already tried to change the paths of the command in crontab unsuccessfully.
I also tried to run os.system("cd /home/pi && libcamera-still ...") with no success.
Any hints or ideas where the problem could be or how can I fix it?
Many thanks in advance for you possible answer!!
