Scott Shawcroft c582c0fda9
Add SAMD21 and SAMD51 support for CircuitPython.
The ProtoThreads style subtasks were removed because it led to
extremely unclear control flow. RTOSes can be used if threading is
needed.

Also added some additional functionality to MSC to support dynamic
LUNs and read-only LUNs.
2018-11-07 12:02:28 -08:00
..
2018-10-23 12:19:32 +07:00