In the default configuration of the test, with 10000 timer samples,
the `periodic_data` array is too big to fit in SRAM on many targets.
Use lower counts of samples for those, depending on their SRAM size,
leaving at least 8 kB for other variables, buffers, stacks etc.
Exclude the test for targets with less than 16 kB.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
Zephyr timer is based on system ticks, there usually exists some time drift
due to round up/down errors between cycles, ticks and time delay, we
need to add those expected time drift into the bound calculation for
running this test.
Add a new config TIMER_TEST_PERIOD_MAX_DRIFT_PERCENT for users to set
expected maximum drift percentage for the timer period.
Signed-off-by: Chen Peng1 <peng1.chen@intel.com>
Test and validate the behavior of a timer driver.
Takes a number of absolute timer cycle samples of a periodic timer then
calculates statistical mean, variance, stddev along with total drift over
the entire test time. Ensures standard deviation and drift are within
a given configurable bound.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
