Update the LowPowerTickerWrapper class logic to stop using its internal
Timeout object for scheduling LP ticker interrupts after the wrapper has
been suspended.
Fixes#8278
Update the low power ticker wrapper code so it does not violate any
properties of the ticker specification. In specific this patch fixes
the following:
- Prevent spurious interrupts
- Fire interrupt only when the ticker times increments to or past the
value set by ticker_set_interrupt
- Disable interrupts when ticker_init is called
Filip Jagodzinski
ccli8
Russ Butler