Capturing CSI BT1120 without any sensor driver

isaacnickaein — Sat, 23 May 2015 05:39:06 GMT

Hi,

I am trying to capture a BT1120 video using parallel CSI on i.MX6 DL/Q running Kernel 3.10. The video is generated by an FPGA which its outputs are connected to the CSI input of i.MX6 based on pin configuration presented here: Support BT1120 progressive mode in Mx6Q .

During boot, the MXC V4L2 capture driver reports this error:

ERROR: v4l2 capture: slave not found!

And trying to capture a frame with the mfw_v4lsrc plugin fails:

root@imx6qsabresd:~# GST_DEBUG=*:1 gst-launch mfw_v4lsrc num-buffers=1 ! jpegenc ! filesink location=sample.jpeg

MFW_GST_V4LSRC_PLUGIN 3.0.11 build on May 11 2015 16:49:57.

Setting pipeline to PAUSED ...

0:00:00.772529334 688 0x1021840 ERROR mfw_v4lsrc /home/isaac/Desktop/yocto/dizzy/fsl-community-bsp/build/tmp/work/imx6qsabresd-poky-linux-gnueabi/gst-fsl-plugin/3.0.11-r0/gst-fsl-plugins-3.0.11/src/misc/v4l_source/src/mfw_gst_v4lsrc.c:474:mfw_gst_v4lsrc_capture_setup: >>V4L_SRC: Unable to open /dev/video0

0:00:00.773700334 688 0x1021840 ERROR mfw_v4lsrc /home/isaac/Desktop/yocto/dizzy/fsl-community-bsp/build/tmp/work/imx6qsabresd-poky-linux-gnueabi/gst-fsl-plugin/3.0.11-r0/gst-fsl-plugins-3.0.11/src/misc/v4l_source/src/mfw_gst_v4lsrc.c:1030:mfw_gst_v4lsrc_start: v4lsrc:error in opening the device

ERROR: Pipeline doesn't want to pause.

Setting pipeline to NULL ...

Freeing pipeline ...

root@imx6qsabresd:~#

Is there any way to configure the V4L2 capture on i.MX6 without any need of a "slave" or sensor device? The FPGA that is connected to CSI port is going to send the video data constantly in a fixed format and resolution and it doesn't need any driver.

Besides this, is there any documentation on capture-mode and input parameter of mfw_v4lsrc plugin?

The capture-mode apparently specifies the driver and/or image format for the capturing. The help for the input parameter just says "set input of camera, please check the bsp release". I wonder if there is any configuration of these parameters to make capturing without the driver possible.

Re: Capturing CSI BT1120 without any sensor driver

joanxie — Fri, 29 May 2015 09:15:40 GMT

refer to the error message, you haven't searched your camera yet.

for the capture mode, depends on what camera you use, in the current bsp,

Capture-mode is a configuration for your sensor:

drivers/media/video/mxc/capture/ov5642.c

enum ov5642_mode {

ov5642_mode_MIN = 0,

ov5642_mode_VGA_640_480 = 0,

ov5642_mode_QVGA_320_240 = 1,

ov5642_mode_NTSC_720_480 = 2,

ov5642_mode_PAL_720_576 = 3,

ov5642_mode_720P_1280_720 = 4,

ov5642_mode_1080P_1920_1080 = 5,

ov5642_mode_QSXGA_2592_1944 = 6,

ov5642_mode_QCIF_176_144 = 7,

ov5642_mode_MAX = 7

};

Re: Capturing CSI BT1120 without any sensor driver

isaacnickaein — Fri, 29 May 2015 21:51:24 GMT

What is the input parameter of mfw_v4lsrc? I just says "set input of camera, please check the bsp release". Where is the documentation (BSP release?) on this parameter?

topic Re: Capturing CSI BT1120 without any sensor driver in i.MX Processors

Capturing CSI BT1120 without any sensor driver

Re: Capturing CSI BT1120 without any sensor driver

Re: Capturing CSI BT1120 without any sensor driver