Static Thread methods and signal methods have been deprecated. Remove
all references in the main code, and most of the tests. Some tests of
the deprecated APIs themselves remain.
When the define LPTICKER_DELAY_TICKS is set deep sleep can be randomly
disallowed when using the low power ticker. This is because a Timer
object, which locks deep sleep, is used to protect from back-to-back
writes to lp tickers which can't support that. This causes tests which
assert that deep sleep is allowed to intermittently fail.
To fix this intermittent failure this patch adds the function
sleep_manager_can_deep_sleep_test_check() which checks if deep sleep
is allowed over a duration. It updates all the tests to use
sleep_manager_can_deep_sleep_test_check() rather
than sleep_manager_can_deep_sleep() so the tests work even if deep
sleep is spuriously blocked.
RTX waits, such as sem.wait(N), delays for between N-1 and N cycles.
As lp_ticker is not so accurate as us_ticker,
sometines, wait is expiring just before the lp_timeout.
Kevin Bracey
Russ Butler
jeromecoutant
Martin Kojtal
ccli8
Bartek Szatkowski
Filip Jagodzinski