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As following https://github.com/intel-aero/meta-intel-aero/wiki/90-(References)-OS-user-Installationhttp:// this for number of video devices and run
sudo v4l2-ctl --list-devices
I am getting some error messages before device list:-
VIDIOC_QUERYCAP: failed: Invalid argument
VIDIOC_QUERYCAP: failed: Invalid argument
VIDIOC_QUERYCAP: failed: Inappropriate ioctl for device
VIDIOC_QUERYCAP: failed: Inappropriate ioctl for device
VIDIOC_QUERYCAP: failed: Inappropriate ioctl for device
VIDIOC_QUERYCAP: failed: Inappropriate ioctl for device
VIDIOC_QUERYCAP: failed: Inappropriate ioctl for device
():
/dev/v4l-subdev7
/dev/v4l-subdev8
ATOM ISP (PCI-3):
/dev/video0
/dev/video1
/dev/video2
/dev/video3
/dev/video4
/dev/video5
/dev/video6
/dev/video7
/dev/video8
/dev/video9
/dev/video10
Intel RealSense 3D Camera R200 (usb-0000:00:14.0-4):
/dev/video11
/dev/video12
/dev/video13
/dev/v4l-subdev0
/dev/v4l-subdev1
/dev/v4l-subdev2
/dev/v4l-subdev3
/dev/v4l-subdev4
/dev/v4l-subdev5
/dev/v4l-subdev6
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Hello Yograj,
Thank you for your interest in the Intel Aero drone.
You can try to rebuild v4l2 . Please follow these steps to do so.
sudo apt-get install libv4l-dev
cmake -DWITH_LIBV4L=ON ..
(or similar, it's important to have theWITH_LIBV4L
enabledmake && sudo make install
If the issue still persists, please provide me the output of the command aero-get-version.py
Hope this helps.
Regards,
Octavian
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when I run following commands I get these messages
cmake -DWITH_LIBV4L=ON
CMake Error: The source directory "/home/smart_drone" does not appear to contain CMakeLists.txt.
Specify --help for usage, or press the help button on the CMake GUI.
/sys/firmware/dmi/tables/smbios_entry_point: Permission denied
/dev/mem: Permission denied
BIOS_VERSION = unknown
OS_VERSION = Ubuntu 16.04.3 LTS"
AIRMAP_VERSION = unknown
FPGA_VERSION = unknown
AeroFC firmware version = 1.6.5
and with sudo
sudo aero-get-version.py
BIOS_VERSION = Aero-01.00.13
OS_VERSION = Ubuntu 16.04.3 LTS"
AIRMAP_VERSION = unknown
FPGA_VERSION = 0xc2
AeroFC firmware version = 1.6.5
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Hello Yograj,
Thank you for your reply.
The black and white camera is not fully v4l2 compliant. Using opencv or gstreamer with the camera device node to grab camera frames will not work. The sequence of operation as shown in the sample needs to be done. Polling on device file descriptor times out after certain interval. This requires the device to be restarted.
You can access the camera with
/dev/video2
but can't stream this device with gstreamer. Instead, you can download a sample code from https://github.com/intel-aero/sample-apps/tree/master/capturev4l2 https://github.com/intel-aero/sample-apps/tree/master/capturev4l2 to see how you can capture a few frames to raw format, then output jpg frames:git clone https://github.com/intel-aero/sample-apps.git cd sample-apps/capturev4l2/ make C=10 INPUT=1 MODE=PREVIEW ./capture_v4l2 --userp -d /dev/video2 ffmpeg -f rawvideo -s 640x480 -pix_fmt yuv420p -i Image-video<*> test.jpg You can find more info on our wiki: https://github.com/intel-aero/meta-intel-aero/wiki/06-Cameras-and-Video# take-a-photo-with-the-black-and-white-camera Regards, Octavian
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Hello Yograj,
Do you require any more assistance with this issue?
Regards,
Octavian

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