server.py out of memory while activating camera

1557476497 · Post time 2019-6-8 02:47:51

Hi all,
after installation of my RasperryPi Mars RobotCar the server will not start. When starting server.py the following messages appear, which indicate a memory shortage problem. However when checking memory allocation there does not appear to be a shortage (see following reports). Also I have checked that the camera is enabled in configuration!

Any suggestions?

pi@raspberrypi:~/Adeept_PiCar-B/server $ python3 server.py

mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)

mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)

Traceback (most recent call last):

File "/usr/lib/python3/dist-packages/picamera/camera.py", line 456, in _init_camera

self._camera = mo.MMALCamera()

File "/usr/lib/python3/dist-packages/picamera/mmalobj.py", line 2279, in __init__

super(MMALCamera, self).__init__()

File "/usr/lib/python3/dist-packages/picamera/mmalobj.py", line 633, in __init__

prefix="Failed to create MMAL component %s" % self.component_type)

File "/usr/lib/python3/dist-packages/picamera/exc.py", line 184, in mmal_check

raise PiCameraMMALError(status, prefix)

picamera.exc.PiCameraMMALError: Failed to create MMAL component b'vc.ril.camera': Out of memory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "server.py", line 692, in <module>

camera = picamera.PiCamera() #Camera initialization

File "/usr/lib/python3/dist-packages/picamera/camera.py", line 431, in __init__

self._init_camera(camera_num, stereo_mode, stereo_decimate)

File "/usr/lib/python3/dist-packages/picamera/camera.py", line 460, in _init_camera

"Camera is not enabled. Try running 'sudo raspi-config' "

picamera.exc.PiCameraError: Camera is not enabled. Try running 'sudo raspi-config' and ensure that the camera has been enabled.

pi@raspberrypi:~/Adeept_PiCar-B/server $ cat /proc/meminfo

MemTotal: 895524 kB

MemFree: 529472 kB

MemAvailable: 722876 kB

Buffers: 27384 kB

Cached: 217264 kB

SwapCached: 0 kB

Active: 184720 kB

Inactive: 138792 kB

Active(anon): 79212 kB

Inactive(anon): 11892 kB

Active(file): 105508 kB

Inactive(file): 126900 kB

Unevictable: 0 kB

Mlocked: 0 kB

SwapTotal: 102396 kB

SwapFree: 102396 kB

Dirty: 28 kB

Writeback: 0 kB

AnonPages: 78860 kB

Mapped: 69724 kB

Shmem: 12244 kB

Slab: 24404 kB

SReclaimable: 11904 kB

SUnreclaim: 12500 kB

KernelStack: 1616 kB

PageTables: 2928 kB

NFS_Unstable: 0 kB

Bounce: 0 kB

WritebackTmp: 0 kB

CommitLimit: 550156 kB

Committed_AS: 779408 kB

VmallocTotal: 1163264 kB

VmallocUsed: 0 kB

VmallocChunk: 0 kB

Percpu: 416 kB

CmaTotal: 8192 kB

CmaFree: 6156 kB

Thank you very much for any help.

1557111628 · Post time 2019-6-10 12:00:05

That out of memory doesn’t imply a shortage in memory. It suggests that the camera recourse have been occupied and cannot be applied repeatedly. The cause may be that server.py has already run in background. You can shut down the program which occupy the camera with sudo killall python3
In the first installation, do not use name in upper case, or it will not automatically start up at boot. Rename the folder Adeept_PiCar-B as adeept_picar-b or run the autostart.py

1557476497 · Post time 2019-6-12 00:00:48

Edited by 1557476497 at 2019-6-12 12:15 AM

Hello,
thank you for your fast response. I did as recommended, but without success. server.py did not start - with same error.
I the changed chmod for car.desktop in autostart to execute and tried to manually start car.desktop with the following error result:

pi@raspberrypi:~/.config/autostart $ ./car.desktop
Traceback (most recent call last):
  File "//home/pi/adeept_picar-b/server/server.py", line 11, in <module>
import ultra
  File "/home/pi/adeept_picar-b/server/ultra.py", line 11, in <module>
import turn,led
  File "/home/pi/adeept_picar-b/server/turn.py", line 35, in <module>
vtr_mid_orig = num_import_int('E_C1:')
  File "/home/pi/adeept_picar-b/server/turn.py", line 25, in num_import_int
with open("set.txt") as f:
FileNotFoundError: [Errno 2] No such file or directory: 'set.txt'
./car.desktop: Zeile 8: Development: Kommando nicht gefunden.

To proof that module 'set.txt' is in directory i then went to directory and displayed modules as follows:

pi@raspberrypi:~/.config/autostart $ cd /home/pi/adeept_picar-b/server/
pi@raspberrypi:~/adeept_picar-b/server $ ls
findline.py  motor.py __pycache__  serverTest.py  setup.py turn.py ultra.py
led.py    motor.pyc  server.py set.txt       speech.py  turn.pyc  ultra.pyc

Mysterious is also the error : car.desktop Line 8: Development: Command not found - (german output translated to english by me!)

Any considerations? Thanks for your response.

Btw: I am running a preinstalled raspian with NOOBS !

1557111628 · Post time 2019-6-12 15:02:02

1557476497 replied at 2019-6-12 12:00 AM
Hello,
thank you for your fast response. I did as recommended, but without success. server.py did no ...

Raspbian installed with NOOBS can have lots of optional versions. We have tested and Lite doesn't work.
sudo cp -f //home/pi/adeept_picar-b/server/set.txt //home/pi/set.txt can solve the problem that set.txt cannot be found.

1557476497 · Post time 2019-6-16 22:13:34

Hello,
now I have installed the standard raspian SW. Camera is enabled but does still not work.
After testing with the standard rasping camera test: "raspistill -o image.jpg" the following error appears:

pi@raspberrypi:~/adeept_picar-b/server $ raspistill -o image.jpg
mmal: Cannot read camera info, keeping the defaults for OV5647
mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)
mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)
mmal: Failed to create camera component
mmal: main: Failed to create camera component
mmal: Camera is not detected. Please check carefully the camera module is installed correctly

I tested all the connection to the camera but did not find any error. Any suggestions?
Thank for your help.

1557476497 · Post time 2019-6-17 00:10:58

Mea Culpa !
It was my and only my fault!
I had the camera connector inserted into the Rasperry Pi Terminal connecter instead of the camera connector! Mars Rover is now working - at least it is functional, and I can proceed!
Sorry for any inconvenience .