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1 # Test a timer implementations variance and long term drift
3 Records and calculates statistical values against a timer validating that.
5 1. Timer variance and standard deviation is below defined acceptable values.
8 Timers are meant to be precise and accurate. This test validates an implementation is both.
43 'total_time': Total time, between first and last period.
45 and an integer value of how many data values are collected for the statistics.
48 to account for expected drift in the test and between the DUT and the external
59 have parameters "tool", with the name of a loadable Python module and
67 the board under test and one at the external tool (Zephyr implementation of
68 the timer also plays a role, and it's the real target of the test, but it
71 doesn't reuse CONFIG_TIMER_TEST_MAX_DRIFT and
73 CONFIG_TIMER_EXTERNAL_TEST_MAX_DRIFT_PPM and