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utilities: Update time/r methods for LINUX

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Default to MONOTONIC clock for timer methods to avoid falling victim to
clock corrections.  Changed signatures from accepting pointers since
this is not needed an complicates calls and Java/JS/Python bindings.

    * Switched from nanosleep to clock_nanosleep to allow developers to
      provide a clock for LINUX
    * Default upm_clock_init to CLOCK_MONOTONIC
    * Updated logic to calculating delay and elapsed to be more readable
    * Added ns flavors for completeness
    * Refactored all upm_* delay/timer methods
    * Added #else for preprocessor cases w/o an #else
    * Added test for AQI
    * Added test fixture with logic to identify a minimum delay time
      which is used as a metric for testing all delay methods
    * Much more lenient unit testing of delays to minimize false CI
      failures

Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Noel Eck
2018-05-01 10:56:27 -07:00
parent be46240b8c
commit db3c73cbd1
10 changed files with 290 additions and 165 deletions
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7
src/ppd42ns/ppd42ns.c
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@ -99,7 +99,7 @@ ppd42ns_dust_data ppd42ns_get_data(const ppd42ns_context dev)
unsigned int low_pulse_occupancy = 0;
upm_clock_init(&max_loop_time);
max_loop_time = upm_clock_init();
do {
low_pulse_occupancy += ppd42ns_pulse_in(dev, 0);
@ -132,11 +132,10 @@ static uint32_t ppd42ns_pulse_in(const ppd42ns_context dev,
assert(dev != NULL);
// we run for no more than 1 second at a time
upm_clock_t max_time;
upm_clock_t pulse_time;
uint32_t total_pulse_time = 0;
upm_clock_init(&max_time);
upm_clock_t max_time = upm_clock_init();
bool pin_level;
bool is_timing = false;
@ -146,7 +145,7 @@ static uint32_t ppd42ns_pulse_in(const ppd42ns_context dev,
if (!is_timing && pin_level == high_low_value)
{
// level is desired level, but not currently timing
upm_clock_init(&pulse_time);
pulse_time = upm_clock_init();
is_timing = true;
}
else if (is_timing && pin_level != high_low_value)