main.c
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/*
* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
* 2017 HAW Hamburg
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief xtimer_now64 continuity test application
*
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @author Sebastian Meiling <s@mlng.net>
*
* @}
*/
#include <stdint.h>
#include "xtimer.h"
#include "fmt.h"
#define ITERATIONS (100000LU)
#define MAXDIFF (1000U)
int main(void)
{
uint32_t n = ITERATIONS;
uint64_t diff_min = UINT64_MAX;
uint64_t diff_max = 0;
uint64_t diff_sum = 0;
xtimer_ticks64_t before = xtimer_now64();
print_str("[START]\n");
while(--n) {
xtimer_ticks64_t now = xtimer_now64();
xtimer_ticks64_t diff = xtimer_diff64(now, before);
if (diff.ticks64 > diff_max) {
diff_max = diff.ticks64;
}
if (diff.ticks64 < diff_min) {
diff_min = diff.ticks64;
}
diff_sum += diff.ticks64;
before = now;
}
print_str("[RESULTS] min=");
print_u64_dec(diff_min);
print_str(", avg=");
print_u64_dec(diff_sum/ITERATIONS);
print_str(", max=");
print_u64_dec(diff_max);
print_str("\n");
if ((diff_max > MAXDIFF) || (diff_sum/ITERATIONS > MAXDIFF)) {
print_str("[FAILURE]\n");
return 1;
}
print_str("[SUCCESS]\n");
return 0;
}