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Standard UVC control
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Standard UVC control

WallaceTseng posted on 29 Sep 2011 1:26 AM PST
Member
7 Forum Posts

 Hi,

I'm trying to send standard control requests such as brightness adjustment via AMCAP.

I've modified PU descriptor for supporting brightness control..

After adjusting brightness in AMCAP, I suppose there should be a callback sent to CyFxUVCApplnUSBSetupCB but I got nothing.

The only callbacks are received while UVC initialing those are GET_INFO, GET_MIN, GET_MAX, etc.

May I know is there any thing I missed and what value should I return to host when receiving GET_INFO?

 

Wallace




Re: Standard UVC control

WallaceTseng posted on 29 Sep 2011 02:35 AM PST
Member
7 Forum Posts

 Hi,

I found where the problem is.

When receiving GET_INFO, I should return (SUPPORT_GET | SUPPORT_SET) to host where SUPPORT_GET is 0x01 and SUPPORT_SET is 0x02.

Wallace






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