We are developing a new product based on the Xmos USB Audio 2.0 Reference Design(using xCore200 Series). We would like to add a control endpoint, in addition to the default control endpoint 0. We have successfully added interrupt endpoints in previous designs, but never a control endpoint. Given that it is bidirectional, it has to be handled differently than the interrupt endpoints. I presume it has to be handled more like endpoint 0.
1: Will the Reference design handle the addition of a control endpoint?
2: If so, Is there any relevant design or application notes that could be used as a guide?
Thanks for any help.
Adding a Control Endpoint to USB audio Ref design
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ed_m
- Junior Member
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mon2
- XCore Legend
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ed_m
- Junior Member
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Hi Mon, Because of constraints on the Host side application, it has to be a control endpoint.
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Wavelength
- Experienced Member
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Ed,
sc_usb_audio/module_usb_audio/endpoint0
Is where all the files are. You will need to figure out where your bmRequest falls into place to add specific requests and responses and build all. I did that for a specific firmware update program we wrote on macOS a couple years back.
Thanks,
Gordon
sc_usb_audio/module_usb_audio/endpoint0
Is where all the files are. You will need to figure out where your bmRequest falls into place to add specific requests and responses and build all. I did that for a specific firmware update program we wrote on macOS a couple years back.
Thanks,
Gordon
Wavelength Audio, ltd.