According to the IPIPE docs, you can turn on a bypass mode and it will
not convert the input stream. Theoretically if all you have "on" in the
pipeline is the resizer, then you should be able to get bayer out.
The code below was part of the kernel IPIPE, I didn't write it, I just
know that it doesn't work!
Where can I find the ccdc_loopback app you are talking about? I'd like
to take a look at that for some hints...
Thanks,
Steve
Chris Stillson wrote:
From what I can tell, the IPIPE doesn't give you raw bayer frames. It
will only give you YUV422 (or maybe YCbCr422). We've managed to get
the ccdc_loopback application working with an in-house made camera
head. I don't quite get the code you've written, but it is possible.
c
On Thu, Apr 17, 2008 at 7:40 AM, Stephen Berry <[EMAIL PROTECTED]> wrote:
I've been spending a lot of time in the past couple of weeks trying to get
a CMOS sensor integrated into the DM355 IPIPE code. WIth little to no
success.
There isn't any example user space application code that works (yet)
according to TI even for the MT9P001 drivers in the kernel. So I borrowed
one that was written for the 6446 (a previewer application that took sensor
data and ran it throught the 6446 previewer driver (and equivilent to the
355 IPIPE?) and displayed it on the NTSC output DAC)
Is there anyone familiar with the DM355 IPIPE that I can ask questions of?
Like for example:
When I call the IPIPE driver the first time everything appears to work
(even though the resultant image is junk), but the second call get's stuck
in the dm355_ipipe.c code:
regw_ip(0xff, IRQ_EN);
while(1){
printk("ipen ");
utemp = regr_ip(IPIPE_EN);
if(utemp == 0) break;
}
To get past this I can to comment out the while loop (and there is another
one just after it too that hangs).
Reading the IPIPE spec seems to indicate that putting the IPIPE in
continuous streaming mode will not toggle the IPIPE_EN bit, so this while
will never complete. BUT putting it into one-shot mode doesn't change
anything either !
What I would really like to do to start is to capture a raw bayer frame
from the sensor. I have some conversion code that I can run externally to
see what it is that I'm getting to verify that the sensor is working
correctly.
I can provide more details if anyone is interested in helping...
Thanks,
Steve Berry
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