Hi again :)
You have an OV7640 sensor attached to your m5603c bridge. :) I
couldn't see it last night, it was too late...
>From the converted trace, line 1770:
unsigned char buffer[1] = { 0x21, };
memcpy(kbuff, buffer, sizeof(buffer)); /* kbuff == cam->control_buffer */
usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x17,
0x7642, kbuff, 1, 100);
0x42 is the slave address of the sensor. I'm still interested in the
complete trace.
BR,
Ilyes Gouta.
On Wed, May 14, 2008 at 9:56 AM, Ilyes Gouta <[EMAIL PROTECTED]> wrote:
> Hi Petr,
>
> I parsed the trace you sent to me yesterday and unfortunately I wasn't
> able to find any communication directed toward the sensor so that I
> can identify it. Generally when the drivers wants to send a parameter
> to the sensor, it includes its slave address within the message. This
> allows us to identify it. You'll find attached the converted .c file
> that reproduces all the communication captured in the usbsnoop trace.
> Attached too is the Python script I wrote to retrieve the
> initialization sequence for the 5602 and 5603c bridges.
>
> I'd like to ask you if you can provide me with another trace where you
> actually change the brightness, gain, color saturation, etc. while
> usbsnoop is capturing the USB traffic on Windows. We'll have a better
> chance to identify the sensor.
>
> BR,
> Ilyes Gouta.
>
> On Tue, May 13, 2008 at 4:38 PM, Ilyes Gouta <[EMAIL PROTECTED]> wrote:
>> Perfect!
>>
>> Thanks Petr, I'll have a look on this asap.
>>
>> BR,
>> Ilyes Gouta.
>>
>> 2008/5/13 Petr Dlouhý <[EMAIL PROTECTED]>:
>>> The text of the last email should be:
>>> Hi,
>>>
>>> I had to shrink the partition and install XP (I get only gray square
>>> instead of picture in VirtualBox). Here is the log.
>>>
>>> > Hi,
>>> >
>>> > Yes you're right Petr. The driver is USB 2.0 only. The cam requires
>>> > another initialization sequence if it's on USB 1.1.
>>> >
>>> > Do you have Windows installed? Can you provide us with USB traces for
>>> > the cam initialization sequence and data exchange? You can do that
>>> > using sniffusb.exe/usbsnoop.
>>> > (http://benoit.papillault.free.fr/usbsnoop/sniff-bin-1.8.zip) We can
>>> > then determine your sensor and eventually write some code to support
>>> > it.
>>> >
>>> > BR,
>>> > Ilyes Gouta.
>>> >
>>>
>>>
>>>
>>>
>>> Petr Dlouhý
>>> [EMAIL PROTECTED]
>>>
>>
>
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