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.
- Move macro definition to mbed_toolchain.h
- Remove double underscores from macro which are reserved.
- Fix macro for IAR until compiler flags to disable path are added again.
Sleep manager tracing strips the path from filenames and uses the result as an
identifier to track drivers that unlock/lock sleep tracing. Replace the function
that strips the path from the string, replace this function with a new macro,
__FILENAME__ which performs the same action in a compiler specific manner.
- GCC_ARM, use __builtin_strrchr which is optimized out at compile time.
- ARM, use __MODULE__ which returns the filename without path.
- IAR, specifiy the --no_path_in_file_macros compiler flag.
Add tracing output to console to track when drivers lock and unlock deep
sleep. Tracing output is enabled by configuring the
'SLEEP_PROFILING_ENABLED' at compile time.
- Wrapped sleep_manager_lock/sleep_manager_unlock in a macro to
conditionally call tracing functions when 'SLEEP_PROFILING_ENABLED' is
set.
- Define a global structure to track driver names and how many locks
they hold in the sleep manager.
Russ Butler
Martin Kojtal
Deepika
Senthil Ramakrishnan
Steven Cartmell
Bartek Szatkowski