Picture display using angstrom on beagle board

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1

Hi,

I start to develop small application which can display a .JPEG picture
on TV using beagle board. I am using angstrom linux distribution. I
could not find the intefrace through framebuffer concept.

I want to know the following ,

--- Which kernel interface is best( fb0, video0) for picture display?
-- What are the parameters to be set through ioctl before calling mmap
function?

Please share if you have sample test application source code which can
display jpeg image.

TIA.

Regards
Rajan

2

Did you figure out how to change from LCD to S-VIDEO (TV) output? I
would like to use S-VIDEO OUT from BeagleBoard to be able to use
portable DVD player's display, but I don't know how to change display
mode.
How to get S-video mode on boot up?

Petri

3

Hi,

console=ttyS2,115200n8 noinitrd root=/dev/mmcblk0p2 omapdss.def_disp=tv omapfb.debug=y omapdss.debug=y omapfb.mode=“tv:ntsc” omapfb.vram=“1:4M,2:4M” init=/init rootfstype=ext3 rw rootdelay=1 nohz=off

4

My problem is that I can't get keyboard to work on Beagle board, so I
can't write these console commands.

How to get keyboard working? I have tried all different configurations
with USB mini A and Mini B cable and powered USB hub, USB keyboard, PS/
2 keyboard, both USB ports on BB, Nothing seems to be working....

5

Hi,
That is u-boot’s bootargs, use minicom / Hyperterminal and a RS232 cable to write that. Did you read this http://elinux.org/BeagleBoardBeginners