TDA4VM: CSI2RX to DSS example code

cesar.xu

Intellectual 470 points

Part Number: TDA4VM

Hi TI,

we need example code of CSI captures image buf fd data to the DSS display.

Regards,

Cesar

over 2 years ago

0 Brijesh Jadav over 2 years ago

TI__Guru**** 496605 points

Hi,

do you mean OpenVX based example? Is the CSI capturing YUV data?

You can refer to tiovx\kernels_j7\hwa\test\test_capture_display.c for sample configuration.

Regards,

Brijesh

0 cesar.xu over 2 years ago in reply to Brijesh Jadav

Intellectual 470 points

Hi Brijesh,

We didn't use openvx only on the linux system；capturing yuv or raw data.

Regards,

Cesar

0 Brijesh Jadav over 2 years ago in reply to cesar.xu

TI__Guru**** 496605 points

Hi cesar,

So do you want to connect CSIRX to DSS on Linux, ie using V4L2 framework?

Rgds,

Brijesh

0 cesar.xu over 2 years ago in reply to Brijesh Jadav

Intellectual 470 points

Hi Brijesh,

yes, use V4L2, now need app example of the csirx to dss.

Regards,

Cesar

0 Nikhil Dasan over 2 years ago in reply to cesar.xu

TI__Guru* 88401 points

Hi Cesar,

Please refer this FAQ to run a capture display usecase using linux drivers and V4L2

(+) [FAQ] TDA4VM: Run Capture - Display usecase on Linux in SDK - Processors forum - Processors - TI E2E support forums

Please try this out and let me know if this helps

Regards,

Nikhil

0 cesar.xu over 2 years ago in reply to Nikhil Dasan

Intellectual 470 points

Hi Nikhil,

The above offer is more complex,

Could you combine 'yavta' and 'modetest' to do an input & output example.

Regards,

Cesar

0 Nikhil Dasan over 2 years ago in reply to cesar.xu

TI__Guru* 88401 points

Hi Cesar,

We have not tried combining yavta and modetest together as they are meant for capture and display exclusive application.

however, you could use gstreamer in this case to capture the images and stream to the display.

You could use the gstreamer command as shown below

# As a window within weston desktop

$ gst-launch-1.0 v4l2src device="/dev/video0" ! video/x-raw, width=640, height=480, format=UYVY ! autovideosink

# Direct KMS Sink

$ systemctl stop weston
$ gst-launch-1.0 v4l2src device="/dev/video0" ! video/x-raw, width=640, height=480, format=UYVY ! queue ! kmssink driver-name=tidss

Please adapt the script as per your usecase.

Regards,

Nikhil