You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
1.7 KiB
70 lines
1.7 KiB
/* |
|
* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de> |
|
* |
|
* 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 timer test application |
|
* |
|
* @author Kaspar Schleiser <kaspar@schleiser.de> |
|
* |
|
* @} |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include "xtimer.h" |
|
#include "periph_conf.h" |
|
|
|
#ifndef NUMOF |
|
#define NUMOF (256) |
|
#endif |
|
|
|
int32_t res[NUMOF]; |
|
|
|
int main(void) |
|
{ |
|
puts("xtimer_periodic_wakeup test application.\n"); |
|
|
|
uint32_t interval = NUMOF; |
|
int32_t max_diff = INT32_MIN; |
|
int32_t min_diff = INT32_MAX; |
|
|
|
for (int i = 0; i < NUMOF; i++) { |
|
xtimer_ticks32_t now = xtimer_now(); |
|
printf("Testing interval %" PRIu32 "... (now=%" PRIu32 ")\n", interval, xtimer_usec_from_ticks(now)); |
|
xtimer_ticks32_t last_wakeup = xtimer_now(); |
|
xtimer_ticks32_t before = last_wakeup; |
|
xtimer_periodic_wakeup(&last_wakeup, interval); |
|
now = xtimer_now(); |
|
res[i] = (xtimer_usec_from_ticks(now) - xtimer_usec_from_ticks(before)) - interval; |
|
interval -= 1; |
|
} |
|
|
|
for (int i = 0; i < NUMOF; i++) { |
|
printf("%4d diff=%" PRIi32 "\n", NUMOF - i, res[i]); |
|
|
|
if (res[i] > max_diff) { |
|
max_diff = res[i]; |
|
} |
|
if (res[i] < min_diff) { |
|
min_diff = res[i]; |
|
} |
|
} |
|
printf("\nMin/max error: %" PRId32 "/%" PRId32 "\n", min_diff, max_diff); |
|
|
|
if (min_diff < -1000 || max_diff > 1000) { |
|
puts("too large difference.\n"); |
|
puts("Test Failed.\n"); |
|
return 1; |
|
} |
|
|
|
printf("\nTest complete.\n"); |
|
return 0; |
|
}
|
|
|