I'm doing a project related to USB audio. My tool chain is CodeWarrior 10.5 + Processor Expert 10.3 + USB Stack 4.1.1.
The USB audio topology is as follows,
The MCU I'm using is MK20FN1M0VLQ12.
Question 1: When selecting this MCU as the CPU in the project, I cannot find the USB_AUDIO_CLASS in the Components Library unless I change the filter setting.
If I switch off the filter, then the USB_AUDIO_CLASS appears. Does this mean the USB Stack 4.1.1 doesn't support MK20FN1M0VLQ12?
Question 2: When I change the settings in P&E, I cannot change the interface settings.
As the snapshot above, the interface is 3, what I expected is that Interface 0 is the control interface, Interface 1 is the Microphone, Interface 2 is the Speaker.
So, Interface 1 is expected to have an Isochronous In Endpoint, I want to assign EP1 to it, Interface 2: Isochronous Out, EP2.
But P&E don't allow me to change the settings, the Endpoints lists of Interface 1 and Interface 2 are both gray color, unchangeable, I don't know why, can somebody tell me why?
My email is email@example.com, thanks!