gblues c3736adb77 Start implementing HID polling thread
== DETAILS

Looking at the other HID USB drivers, it looks like the typical
implementation is to start up a background thread to do the
polling, rather than wait for RA to invoke the poll() method.

This commit sets up the skeleton of the background thread:

- The thread gets created in init()
- The thread gets stopped in free()

Right now the body of the thread is a 10ms sleep.

== TESTING

It compiles cleanly, and links. Don't know if it actually works.
2017-12-30 04:39:56 +01:00
..
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