ok. my error: here http://wiki.gumstix.org/index.php?title=Caspa_camera_boards i missed the bit 'replace the kernel and modules of an existing image'.

so, this partially worked:
- http://www.gumstix.org/create-a-bootable-microsd-card.html Create a bootable MicroSD card
- load it with this http://cumulus.gumstix.org/images/angstrom/factory/2011-03-25-1619/ pre-built image
- replace some files as explained in http://wiki.gumstix.org/index.php?title=Caspa_camera_boards
- configure the LCD touchscreen

now, when i run:
mplayer tv:// -tv driver=v4l2:device=/dev/video0

a led in the camera does flash. however the terminal gives:

//---------------------------------------
MPlayer UNKNOWN-4.3.3 (C) 2000-2010 MPlayer Team

Playing tv://.
TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <olschewski@zpr.uni-koeln.de>
 comment: first try, more to come ;-)
v4l2: your device driver does not support VIDIOC_G_STD ioctl, VIDIOC_G_PARM was used instead.
Selected device: omap3/mt9v032//
 Capabilities:  video capture  streaming
 supported norms:
 inputs: 0 = camera;
 Current input: 0
 Current format: YUYV
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl enum norm failed: Invalid argument
Error: Cannot set norm!
Selected input hasn't got a tuner!
v4l2: ioctl set mute failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffrawyuy2] vfm: ffmpeg (RAW YUY2)
==========================================================================
Audio: no sound
Starting playback...
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 752x480 => 752x480 Packed YUY2
Source image dimensions are too high: 752x480 (maximum is 480x272)
FATAL: Cannot initialize video driver.

FATAL: Could not initialize video filters (-vf) or video output (-vo).

v4l2: ioctl set mute failed: Invalid argument
v4l2: 10 frames successfully processed, 18 frames dropped.

Exiting... (End of file)
---------------------------------------//

any idea on how to fix this?


On Tue, Jul 5, 2011 at 2:09 PM, Phillip Jones <pjones13@gmail.com> wrote:
close. modify mmcargs instead of mmcboot. (at least, that's what worked for me).
-Phillip


2011/7/5 Gonçalo Bernardo <goncalobernardo@gmail.com>:
> Modified the mmcboot envvar using the command editenv to:
>
> mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr};
> init=/init
>
> however the problem persists. any more ideas?
>
> On Tue, Jul 5, 2011 at 2:10 AM, Phillip Jones <pjones13@gmail.com> wrote:
>>
>> Hi,
>> I went through this a couple days ago. I don't have my gumstix handy
>> right now, so my memory will be inexact, but hopefully can help you
>> out.
>>
>> At one point during boot up, you can pause the boot process by hitting
>> a key, do that.
>>
>> issue command "printenv"
>>
>> This will show several variables, including a variable for boot
>> options -- one for NAND boot and one for mmc card boot. (sorry, can't
>> remember the exact name offhand). You need to add "init=/init" to the
>> appropriate variable. something like, "setenv bootopt=$bootopt
>> init=/init"
>>
>> "printenv" again to verify that the line was changed correctly.
>>
>> Then issue the command to boot and you're good to go.
>>
>> -Phillip
>>
>>
>> 2011/7/4 Gonçalo Bernardo <goncalobernardo@gmail.com>:
>> > Dear all,
>> >
>> > (apologies for possible duplication. couldn't find anything about this
>> > on
>> > the archives tough)
>> >
>> > I am trying to go down this tutorial
>> > http://wiki.gumstix.org/index.php?title=Caspa_camera_boards .
>> > I got a booting kernel but then this output is shown:
>> >
>> > //--------------------------------------
>> > Waiting for root device /dev/mmcblk0p2...
>> > mmc0: host does not support reading read-only switch. assuming
>> > write-enable.
>> > mmc0: new high speed SDHC card at address 0001
>> > mmcblk0: mmc0:0001 00000 7.60 GiB
>> >  mmcblk0: p1 p2
>> > kjournald starting.  Commit interval 5 seconds
>> > EXT3-fs (mmcblk0p2): using internal journal
>> > EXT3-fs (mmcblk0p2): mounted filesystem with writeback data mode
>> > VFS: Mounted root (ext3 filesystem) on device 179:2.
>> > devtmpfs: error mounting -2
>> > Freeing init memory: 940K
>> > Kernel panic - not syncing: No init found.  Try passing init= option to
>> > kernel. See Linux Documentation/init.txt for guidance.
>> > --------------------------------------//
>> >
>> > I've seen here
>> > http://www.gumstix.org/create-a-bootable-microsd-card.html
>> > that an MLO and an u-boot.bin files are needed. As those are not
>> > provided
>> > I'm not putting them in the SDcard.
>> >
>> > Does any of you have a suggestion for this?
>> >
>> > Thanks in advance,
>> > gonber
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > All of the data generated in your IT infrastructure is seriously
>> > valuable.
>> > Why? It contains a definitive record of application performance,
>> > security
>> > threats, fraudulent activity, and more. Splunk takes this data and makes
>> > sense of it. IT sense. And common sense.
>> > http://p.sf.net/sfu/splunk-d2d-c2
>> > _______________________________________________
>> > gumstix-users mailing list
>> > gumstix-users@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/gumstix-users
>> >
>> >
>>
>>
>> ------------------------------------------------------------------------------
>> All of the data generated in your IT infrastructure is seriously valuable.
>> Why? It contains a definitive record of application performance, security
>> threats, fraudulent activity, and more. Splunk takes this data and makes
>> sense of it. IT sense. And common sense.
>> http://p.sf.net/sfu/splunk-d2d-c2
>> _______________________________________________
>> gumstix-users mailing list
>> gumstix-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
>
>
> --
> .::Gonber::.
>
> ------------------------------------------------------------------------------
> All of the data generated in your IT infrastructure is seriously valuable.
> Why? It contains a definitive record of application performance, security
> threats, fraudulent activity, and more. Splunk takes this data and makes
> sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-d2d-c2
> _______________________________________________
> gumstix-users mailing list
> gumstix-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
>

------------------------------------------------------------------------------
All of the data generated in your IT infrastructure is seriously valuable.
Why? It contains a definitive record of application performance, security
threats, fraudulent activity, and more. Splunk takes this data and makes
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2d-c2
_______________________________________________
gumstix-users mailing list
gumstix-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/gumstix-users



--
.::Gonber::.