Jeff Epler e20c65d8f0 background tasks: Add, use port_wake_main_task
Some ports need an extra operation to ensure that the main task is
awoken so that a queued background task will execute during an ongoing
light sleep.

This removes the need to enable supervisor ticks while I2SOut is operating.

Closes: #3952
2021-01-09 14:02:47 -06:00
..
wip
2020-11-22 19:10:09 -05:00