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/*
* Copyright (c) 2010, Kelvin Lawson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. No personal names or organizations' names associated with the
* Atomthreads project may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "atom.h"
#include "atomtimer.h"
#include "atomtests.h"
/* Test OS objects */
static ATOM_TIMER timer_cb[4];
/* Global test data */
static uint32_t cb_ticks[4];
static uint32_t start_time;
/* Forward declarations */
static void testCallback (POINTER cb_data);
/**
* \b test_start
*
* Start timer test.
*
* This test exercises the atomTimerRegister() API, particularly the
* linked lists used internally for managing an ordered list of timers.
*
* Several timers are registered out of order (in terms of the callback
* time) and we check that the callbacks are called at the expected
* times.
*
* @retval Number of failures
*/
uint32_t test_start (void)
{
int failures;
int i;
/* Default to zero failures */
failures = 0;
/*
* Sleep for one tick first to ensure we start near a
* tick boundary. This should ensure that the timer
* tick does not advance while we are setting up the
* timers but before registering them.
*/
atomTimerDelay(1);
/*
* Keep a note of the time we started the timers. This
* can be added to the tick timers to calculate the final
* time at which we expect the timers to expire.
*/
start_time = atomTimeGet();
/*
* Fill out four timer request structures. Callbacks are
* requested starting in one second, with the others
* at 1 tick intervals thereafter.
*/
for (i = 0; i < 4; i++)
{
/*
* testCallback() is passed the expected
* callback time via cb_data.
*/
cb_ticks[i] = SYSTEM_TICKS_PER_SEC + i;
timer_cb[i].cb_ticks = cb_ticks[i];
timer_cb[i].cb_func = testCallback;
timer_cb[i].cb_data = &cb_ticks[i];
}
/* Register the timers in a different order */
if (atomTimerRegister (&timer_cb[1]) != ATOM_OK)
{
ATOMLOG (_STR("TimerReg1\n"));
failures++;
}
else if (atomTimerRegister (&timer_cb[3]) != ATOM_OK)
{
ATOMLOG (_STR("TimerReg3\n"));
failures++;
}
else if (atomTimerRegister (&timer_cb[2]) != ATOM_OK)
{
ATOMLOG (_STR("TimerReg2\n"));
failures++;
}
else if (atomTimerRegister (&timer_cb[0]) != ATOM_OK)
{
ATOMLOG (_STR("TimerReg0\n"));
failures++;
}
else
{
/* Successfully registered timers */
/* Wait two seconds for callbacks to complete */
if (atomTimerDelay(2 * SYSTEM_TICKS_PER_SEC) != ATOM_OK)
{
ATOMLOG (_STR("Wait\n"));
failures++;
}
else
{
/*
* The callbacks should have cleared down cb_ticks[x]
* to zero if they were called at the expected
* system time.
*/
for (i = 0; i < 4; i++)
{
/* Check the callback has zeroed the area */
if (cb_ticks[i] != 0)
{
ATOMLOG (_STR("Clear%d\n"), i);
failures++;
}
}
}
}
/* Quit */
return failures;
}
/**
* \b testCallback
*
* Check the time at which this timer callback occurs matches
* the time we expected. Clear down the expected time location
* if correct.
*
* @param[in] cb_data Not used
*/
static void testCallback (POINTER cb_data)
{
uint32_t expected_end_time;
/*
* Pull out the number of ticks the timer was registered for
* and add this to the start time, to get the final time at
* which we expect the timers to expire.
*/
expected_end_time = start_time + *(uint32_t *)cb_data;
/*
* Check the callback time (now) matches the time
* we expected the callback.
*/
if (atomTimeGet() == expected_end_time)
{
/* Called back when we expected, clear the passed location */
*(uint32_t *)cb_data = 0;
}
else
{
/* Not called at expected time, don't clear the location */
}
}
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