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Hi: When I debugged the UVC AN75779 code, I encountered a problem. When I turned off the AMCAP, I received a SET FEATURE request from the host. Once I received the SET FEATURE content, the video streaming interface was remotely awake, and I could not With AMCAP, you must replug the USB 3.0 device. Why is this?
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Hi:This is the usb trace, Every time SET FEATURE is issued (content is: remote wake-up) and AMCAP is turned on again, the video stream will crash. I suspect that it is in U2/U3 mode. How can this be solved? Is the device blocking the U2/U3 or remote wake-up processing code, and if it is added to the remote wake-up processing code, what is the wakeup process? Is there any specific documentation?
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Disable the Low Power Entry (U0 -> U1/U2/U3) using CyU3PUsbLPMDisable once the application is active.
This does not allow the link to go to low power mode.
Refer CyFxUvcApplnStart in AN75779.
Did you enable the remote wake up support through the descriptors?
Share the descriptor file.
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Hi; As the below picture,I have not enabled the remote wake but i do not know why i received set feature (01 03 00 00 02 01 00 00)
and once receive the set feature, amcap will open failture!
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I read the USB protocol SET FEATURE part of this content, 01 03 00 00 02 01 00 00 awareness is to enable the remote wake-up function of interface 1
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We will try to re-produce the issue and let you know.
Upload your firmware here.
If you can not upload the entire firmware, just attach uvc.c file.