testsuites/validation/tc-acfg-appl-does-not-need-clock-driver.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup AcfgValApplDoesNotNeedClockDriver
0007  */
0008
0009 /*
0010  * Copyright (C) 2022 embedded brains GmbH & Co. KG
0011  *
0012  * Redistribution and use in source and binary forms, with or without
0013  * modification, are permitted provided that the following conditions
0014  * are met:
0015  * 1. Redistributions of source code must retain the above copyright
0016  *    notice, this list of conditions and the following disclaimer.
0017  * 2. Redistributions in binary form must reproduce the above copyright
0018  *    notice, this list of conditions and the following disclaimer in the
0019  *    documentation and/or other materials provided with the distribution.
0020  *
0021  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0022  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0023  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0024  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0025  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0026  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0027  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0028  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0029  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0030  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0031  * POSSIBILITY OF SUCH DAMAGE.
0032  */
0033
0034 /*
0035  * This file is part of the RTEMS quality process and was automatically
0036  * generated.  If you find something that needs to be fixed or
0037  * worded better please post a report or patch to an RTEMS mailing list
0038  * or raise a bug report:
0039  *
0040  * https://www.rtems.org/bugs.html
0041  *
0042  * For information on updating and regenerating please refer to the How-To
0043  * section in the Software Requirements Engineering chapter of the
0044  * RTEMS Software Engineering manual.  The manual is provided as a part of
0045  * a release.  For development sources please refer to the online
0046  * documentation at:
0047  *
0048  * https://docs.rtems.org
0049  */
0050
0051 #ifdef HAVE_CONFIG_H
0052 #include "config.h"
0053 #endif
0054
0055 #include <rtems.h>
0056
0057 #include <rtems/test.h>
0058
0059 /**
0060  * @defgroup AcfgValApplDoesNotNeedClockDriver \
0061  *   spec:/acfg/val/appl-does-not-need-clock-driver
0062  *
0063  * @ingroup TestsuitesValidationAcfg0
0064  *
0065  * @brief Tests the effect of the
0066  *   CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER application configuration
0067  *   option.
0068  *
0069  * This test case performs the following actions:
0070  *
0071  * - Get the current clock ticks since boot value. Busy wait for at least one
0072  *   clock tick interval.
0073  *
0074  *   - Check that the clock ticks since boot count did not change while busy
0075  *     waiting for more than one clock tick interval.
0076  *
0077  * @{
0078  */
0079
0080 /**
0081  * @brief Get the current clock ticks since boot value. Busy wait for at least
0082  *   one clock tick interval.
0083  */
0084 static void AcfgValApplDoesNotNeedClockDriver_Action_0( void )
0085 {
0086   T_time  time_per_clock_tick;
0087   T_ticks duration;
0088   T_ticks elapsed;
0089   T_ticks t0;
0090   T_ticks t1;
0091   rtems_interval ticks_since_boot;
0092
0093   ticks_since_boot = rtems_clock_get_ticks_since_boot();
0094
0095   time_per_clock_tick = T_seconds_and_nanoseconds_to_time(
0096     0,
0097     rtems_configuration_get_nanoseconds_per_tick()
0098   );
0099   duration = 2 * T_time_to_ticks( time_per_clock_tick );
0100   elapsed = 0;
0101   t0 = T_tick();
0102
0103   while ( elapsed < duration ) {
0104     t1 = T_tick();
0105     elapsed += t1 - t0;
0106     t0 = t1;
0107   }
0108
0109   /*
0110    * Check that the clock ticks since boot count did not change while busy
0111    * waiting for more than one clock tick interval.
0112    */
0113   T_step_eq_u32(
0114     0,
0115     rtems_clock_get_ticks_since_boot(),
0116     ticks_since_boot
0117   );
0118 }
0119
0120 /**
0121  * @fn void T_case_body_AcfgValApplDoesNotNeedClockDriver( void )
0122  */
0123 T_TEST_CASE( AcfgValApplDoesNotNeedClockDriver )
0124 {
0125   T_plan( 1 );
0126
0127   AcfgValApplDoesNotNeedClockDriver_Action_0();
0128 }
0129
0130 /** @} */