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SD-Connect has unique GUID?

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SD-Connect has unique GUID?
by max verem on Mar 23, 2007 at 4:23:29 pm

I have more then 2 boxes connected by ieee1394 bus and found them has no unique identifiers, all of them has 00e0660101087864 id, am i wrong?


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Re: SD-Connect has unique GUID?
by Mike Schell on Mar 23, 2007 at 9:31:46 pm

Hi Max-
You are correct, we don't change the serial number in the IEEE GUID, as we have found problems when connected multiple DV devices to the same IEEE bus. Can you tell us more about your application?

Thanks-
Mike Schell
Convergent Design

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Re: SD-Connect has unique GUID?
by max verem on Mar 24, 2007 at 3:22:29 pm

My application is simple opensource video server that play only DV based content and controlled by VDCP.

I used dv1394 module (see http://www.linux1394.org/) to send DV packets to device. That module used channel 63 (broadcast) to send data.

Now i am going to migrate from usage dv1394 to raw1394+libiec61883, it can use broadcast mode and p2p - that makes me possible to connect more than one AVC device (currently SD-Connect) to 1394 controller.

The problem is that not unique SD-Connect's GUID required to keep port and node number for configuring DV data sending loop (not so stable method, after bus reset, device removind/attaching, i can't detect what of available AVC devices is setted on node #1 on port #0) or still use broadcast data sending (required one 1394 controller per "video port").



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Re: SD-Connect has unique GUID?
by max verem on Mar 29, 2007 at 1:33:23 pm

Dear Mike Schell!

Long time without replies....
What is result of this discussion thread? None?
Do not going to provide IEEE 1394 unique GUID?

In additional question:
How SD-Connect behave on ieee1394 bus reset? Does is reset internal video FIFO? Does is shows Blank black frame?



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