1 /*
2 * Copyright (c) 2021 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/ztest.h>
8 #include <zephyr/busy_sim.h>
9
ZTEST(busy_sim,test_busy_sim)10 ZTEST(busy_sim, test_busy_sim)
11 {
12 uint32_t ms = 1000;
13 uint32_t delta = 80;
14 uint32_t busy_ms;
15 uint32_t t = k_uptime_get_32();
16
17 k_busy_wait(1000 * ms);
18 t = k_uptime_get_32() - t;
19
20 zassert_true((t > (ms - delta)) && (t < (ms + delta)));
21
22 /* Start busy simulator and check that k_busy_wait last longer */
23 t = k_uptime_get_32();
24 busy_sim_start(500, 200, 1000, 400, NULL);
25 k_busy_wait(1000 * ms);
26 t = k_uptime_get_32() - t;
27 busy_ms = (3 * ms) / 2;
28
29 busy_sim_stop();
30 /* due to clock imprecision, randomness and additional cpu load overhead
31 * expected time range is increased.
32 */
33 zassert_true((t > (busy_ms - 2 * delta)) && (t < (busy_ms + 4 * delta)),
34 "expected in range: %d-%d, k_busy_wait lasted %d",
35 busy_ms - 2 * delta, busy_ms + 4 * delta, t);
36
37 /* Check that k_busy_wait is not interrupted after busy_sim_stop. */
38 t = k_uptime_get_32();
39 k_busy_wait(1000 * ms);
40 t = k_uptime_get_32() - t;
41 zassert_true((t > (ms - delta)) && (t < (ms + delta)));
42 }
43
44 ZTEST_SUITE(busy_sim, NULL, NULL, NULL, NULL, NULL);
45
