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Last Post 20 Jan 2015 03:52 PM by Adam Ford

Display to S-Video rather than LCD

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jsarao

New Member
Posts:29

25 Jan 2012 04:27 PM
Is there an DirectFB (framebuffer) example (or directions, FAQ, etc.) on how to display to the S-Video port on the dev board? Current examples (draw-test, df_dok, etc. ) all display to the LCD.

richard.laborde@logicpd.com

Basic Member
Posts:247

26 Jan 2012 08:28 AM
Which kit are you working with? The DM37 supports HDMI-DVI, but doesn't have any examples for S-video. Thanks Richard

jsarao

New Member
Posts:29

26 Jan 2012 10:08 AM
I am working with the LogicPD Zoom™ DM3730 Torpedo Development Kit. An S-Video example would be helpful (or a link to something).

jsarao

New Member
Posts:29

09 Feb 2012 05:33 PM
Posted By richardl on 26 Jan 2012 8:28 AM Which kit are you working with? The DM37 supports HDMI-DVI, but doesn''t have any examples for S-video. Thanks Richard Is there a test procedure (from the LoLo, or the linux Kernek) to verify that the S-VIDEO (TV_OUT1) is working? Looking through the LogicLoader_v2-5_STP.pdf (Test Procedure) it looks likes S-VIDEO is not tested (but perhaps I am reading it wrong). Trying to verify if my problem is in Linux BSP or the board itself.

richard.laborde@logicpd.com

Basic Member
Posts:247

13 Feb 2012 07:37 AM
js, I think the hardware connections are still there, (you could map the signals from the SOM to the connector) but if we don't test it, our software doesn't support it.

jsarao

New Member
Posts:29

17 Feb 2012 01:13 PM
Posted By jsarao on 26 Jan 2012 10:8 AM I am working with the LogicPD Zoom™ DM3730 Torpedo Development Kit. An S-Video example would be helpful (or a link to something). For Everyone else, here is what I did to make it work: 1. Recompile kernel and enable COMPOSITE video (default was S-Video) 2. I then boot the kernel using TFTP 3. Change the u-boot args rotation=1 display=15 (you may need to adjust this) 4. save u-boot args 5. boot the kernel I see the panguin logo on my TV you can verify that the correct Linux kernel boot params get passed from the u-boot DM3730Logix# cat /proc/cmdline you should see omapfb args got passed in.

Moha

New Member
Posts:4

10 Jan 2015 05:03 AM
Hi jsarao, Where did you change S-Video to COMPOSITE? Thanks.

Adam Ford

Advanced Member
Posts:794

20 Jan 2015 03:52 PM
Here is an example of using the S-Video output with BSP 2.4-3. For simplicity, I would suggest using an S-Video to composite adapter. http://support.logicpd.co...ft/1948/Default.aspx

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Forums Texas Instruments SOMs and Development Kits OMAP35x, DM3730, AM3703 Torpedo SOM Development Kit