tests/drivers/timer/nrf_grtc_timer/src/main.c

/*
 * Copyright (c) 2022, Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include <zephyr/ztest.h>
#include <zephyr/drivers/timer/nrf_grtc_timer.h>
#include <hal/nrf_grtc.h>

#define GRTC_SLEW_TICKS 10

ZTEST(nrf_grtc_timer, test_get_ticks)
{
	k_timeout_t t = K_MSEC(1);

	uint64_t exp_ticks = z_nrf_grtc_timer_read() + t.ticks;
	int64_t ticks;

	/* Relative 1ms from now timeout converted to GRTC */
	ticks = z_nrf_grtc_timer_get_ticks(t);
	zassert_true((ticks >= exp_ticks) && (ticks <= (exp_ticks + GRTC_SLEW_TICKS)),
		     "Unexpected result %" PRId64 " (expected: %" PRId64 ")", ticks, exp_ticks);

	/* Absolute timeout 1ms in the past */
	t = Z_TIMEOUT_TICKS(Z_TICK_ABS(sys_clock_tick_get() - K_MSEC(1).ticks));

	exp_ticks = z_nrf_grtc_timer_read() - K_MSEC(1).ticks;
	ticks = z_nrf_grtc_timer_get_ticks(t);
	zassert_true((ticks >= exp_ticks) && (ticks <= (exp_ticks + GRTC_SLEW_TICKS)),
		     "Unexpected result %" PRId64 " (expected: %" PRId64 ")", ticks, exp_ticks);

	/* Absolute timeout 10ms in the future */
	t = Z_TIMEOUT_TICKS(Z_TICK_ABS(sys_clock_tick_get() + K_MSEC(10).ticks));
	exp_ticks = z_nrf_grtc_timer_read() + K_MSEC(10).ticks;
	ticks = z_nrf_grtc_timer_get_ticks(t);
	zassert_true((ticks >= exp_ticks) && (ticks <= (exp_ticks + GRTC_SLEW_TICKS)),
		     "Unexpected result %" PRId64 " (expected: %" PRId64 ")", ticks, exp_ticks);
}

ZTEST_SUITE(nrf_grtc_timer, NULL, NULL, NULL, NULL, NULL);