Re: [beagleboard] BeagleBone camera cape on Ubuntu 14.04
On 1/11/15, 12:34 PM, Chris Whittenburg wrote: On Sun, Jan 11, 2015 at 10:21 AM, Mashiat Sarker Shakkhar mailto:mashiat.sar...@gmail.com>> wrote: Thanks a lot for your response. After downgrading the kernel, I got /dev/video0. The problem is, I cannot get an image from the camera. All I get is a black frame. I have tried both OpenCV and v4l2grab (https://github.com/twam/v4l2grab). The result was the same black image. A common issue with this camera is that it takes several frames for the automatic gain to kick in. Thus, you get black frames at first. Try capturing a couple hundred frames at the same time and then look at the last one. Indeed, that did the trick. Thank you very much. Regards Shakkhar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] BeagleBone camera cape on Ubuntu 14.04
On Sun, Jan 11, 2015 at 10:21 AM, Mashiat Sarker Shakkhar < mashiat.sar...@gmail.com> wrote: > > > Thanks a lot for your response. After downgrading the kernel, I got > /dev/video0. The problem is, I cannot get an image from the camera. All I > get is a black frame. I have tried both OpenCV and v4l2grab ( > https://github.com/twam/v4l2grab). The result was the same black image. A common issue with this camera is that it takes several frames for the automatic gain to kick in. Thus, you get black frames at first. Try capturing a couple hundred frames at the same time and then look at the last one. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] BeagleBone camera cape on Ubuntu 14.04
On 1/9/15, 9:31 AM, Robert Nelson wrote: On Fri, Jan 9, 2015 at 5:48 AM, wrote: Hi I have a BeagleBone camera cape from QuickLogic like the one shown here: http://elinux.org/CircuitCo:BeagleBone_3.1MP_Camera. I am running Ubuntu 14.04 on a BeagleBone Black. It looks like Ubuntu does not support the cape out of the box. I have spent a lot of time looking for a driver but could not find anything useful. I got the Ubuntu 14.04 image from here: http://elinux.org/BeagleBoardUbuntu. Angstrom on the other hand does come with camera cape support. It is mounted as /dev/video0, just like any V4L2 compatible device. Can anoyone tell me how do I mount the camera as a V4L2 device on Ubuntu? To fully support that cape, you need to downgrade to the v3.8.x kernel: sudo apt-get update sudo apt-get install linux-image-3.8.13-bone69 sudo reboot Hi Robert Thanks a lot for your response. After downgrading the kernel, I got /dev/video0. The problem is, I cannot get an image from the camera. All I get is a black frame. I have tried both OpenCV and v4l2grab (https://github.com/twam/v4l2grab). The result was the same black image. Here are some (possibly) relevant information: ``` ubuntu@arm:~$ v4l2-ctl --info Driver Info (not using libv4l2): Driver name : cssp_camera Card type : cssp_camera Bus info : cssp_camera-000 Driver version: 3.8.13 Capabilities : 0x0501 Video Capture Read/Write Streaming ubuntu@arm:~$ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT Index : 0 Type: Video Capture Pixel Format: 'YUYV' Name: 4:2:2, packed, YUYV Index : 1 Type: Video Capture Pixel Format: 'RGBP' Name: RGB565 (LE) Index : 2 Type: Video Capture Pixel Format: 'RGBO' Name: RGB555 (LE) ubuntu@arm:~$ v4l2-ctl -V Format Video Capture: Width/Height : 640/480 Pixel Format : 'YUYV' Field : None Bytes per Line: 1280 Size Image: 614400 Colorspace: JPEG (JFIF/ITU601) ``` Here is the relevant portion from dmesg (immediately after trying to capture an image with OpenCV): https://gist.github.com/shahriman/0c7d8dd2683a5d1abb8d. I will really appreciate it if you can provide me some hint as to what might be the issue here. Regards Shakkhar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] BeagleBone camera cape on Ubuntu 14.04
On Fri, Jan 9, 2015 at 5:48 AM, wrote: > Hi > > I have a BeagleBone camera cape from QuickLogic like the one shown here: > http://elinux.org/CircuitCo:BeagleBone_3.1MP_Camera. > > I am running Ubuntu 14.04 on a BeagleBone Black. It looks like Ubuntu does > not support the cape out of the box. I have spent a lot of time looking for > a driver but could not find anything useful. I got the Ubuntu 14.04 image > from here: http://elinux.org/BeagleBoardUbuntu. > > Angstrom on the other hand does come with camera cape support. It is mounted > as /dev/video0, just like any V4L2 compatible device. > > Can anoyone tell me how do I mount the camera as a V4L2 device on Ubuntu? To fully support that cape, you need to downgrade to the v3.8.x kernel: sudo apt-get update sudo apt-get install linux-image-3.8.13-bone69 sudo reboot Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
