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KSDK 2.0 USB API questions and suggestions

Question asked by László Monda on Feb 2, 2016
Latest reply on Feb 2, 2016 by László Monda

Dear NXP USB developers,


First of all, let me just say that I'm very happy with the new KSDK 2.0 USB examples that you included. The compound keyboard + mouse example is exactly what I've been looking for. That being said, there are still a couple of issues that could be improved from the perspective of an application developer. Please let me highlight some that I noticed.


* A fair number of USB examples has a lite and non-lite (regular?) version. What is supposed to be the difference between the two? When should one be picked over the other? Is one planned to be obsoleted?


* I think the most error prone data structure is g_UsbDeviceConfigurationDescriptor by far. It's super long, weakly typed (uint8[]), and contains a multitude of different descriptors. Modifying it is like walking on a minefield. It'd be great to decompose it to multiple smaller (typed) data structures.


* I think that the API could be significantly nicer and easier to use. LUFA exposes the most beautiful USB API I've ever seen and it's a joy to work with.


* Regarding the usb_device_ch9.[ch] files, what ch9 is supposed to mean?


* "Device" is often mispelled as "Devcie" across the codebase.


That's pretty much all I wanted to share for now. I do understand that implementing a great API takes time and you're probably pushed to churn out features. Thank you for your hard work and keep it up!

- Laci