[aravis] Re: understanding command events

  • From: Emmanuel Pacaud <emmanuel.pacaud@xxxxxxxxxxxxx>
  • To: aravis@xxxxxxxxxxxxx
  • Date: Sun, 25 Feb 2018 10:41:17 +0100

Le dim. 25 févr. 2018 à 9:53, Ran Shalit <ranshalit@xxxxxxxxx> a écrit :

Yet, I don't see that aravis use ARV_UVCP_COMMAND_EVENT_CMD , but
instead use the 0xc3 define.

I would please like to ask:
1. What is the meaning of 0xc3, and why I can't find it in standard ?
2. How does events are being recieved in host ? Does host required to
poll the events from device ? if yes - in which rate ?

Events are not supported by aravis yet. So any use of the EVENT related defines is not tested and probably broken.

As we can not use the USB3Vision specification documents, the values you are seeing come from freely available sources. Most probably from the usb3vision driver hosted on github and the protocol parsers from wireshark.



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