C++ xAreCountingSemaphoreTasksStillRunning函数代码示例

static void vCheckTimerCallback( xTimerHandle xTimer )
{
static unsigned short usLastRegTest1Counter = 0, usLastRegTest2Counter = 0;

/* Define the status message that is sent to the LCD task.  By default the
status is PASS. */
static xQueueMessage xStatusMessage = { mainMESSAGE_STATUS, pdPASS };

	/* This is the callback function used by the 'check' timer, as described
	at the top of this file. */

	/* The parameter is not used. */
	( void ) xTimer;
	
	/* See if the standard demo tasks are executing as expected, changing
	the message that is sent to the LCD task from PASS to an error code if
	any tasks set reports an error. */
	if( xAreComTestTasksStillRunning() != pdPASS )
	{
		xStatusMessage.ulMessageValue = mainERROR_COM_TEST;
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
	{
		xStatusMessage.ulMessageValue = mainERROR_DYNAMIC_TASKS;
	}
	
	if( xAreGenericQueueTasksStillRunning() != pdPASS )
	{
		xStatusMessage.ulMessageValue = mainERROR_GEN_QUEUE_TEST;
	}			
	
	if( xAreCountingSemaphoreTasksStillRunning() != pdPASS )
	{
		xStatusMessage.ulMessageValue = mainERROR_COUNT_SEM_TEST;
	}
	
	if( xAreTimerDemoTasksStillRunning( ( portTickType ) mainCHECK_TIMER_PERIOD ) != pdPASS )
	{
		xStatusMessage.ulMessageValue = mainERROR_TIMER_TEST;
	}

	/* Check the reg test tasks are still cycling.  They will stop
	incrementing their loop counters if they encounter an error. */
	if( usRegTest1Counter == usLastRegTest1Counter )
	{
		xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
	}

	if( usRegTest2Counter == usLastRegTest2Counter )
	{
		xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
	}

	usLastRegTest1Counter = usRegTest1Counter;
	usLastRegTest2Counter = usRegTest2Counter;
	
	/* This is called from a timer callback so must not block! */
	xQueueSendToBack( xLCDQueue, &xStatusMessage, mainDONT_BLOCK );
}

/* See the description at the top of this file. */
static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
    static long lChangedTimerPeriodAlready = pdFALSE;
    static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
    unsigned long ulErrorFound = pdFALSE;

    /* Check all the demo and test tasks to ensure that they are all still
    running, and that none have detected an error. */
    if( xAreDynamicPriorityTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 0UL );
    }

    if( xAreBlockTimeTestTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 1UL );
    }

    if( xAreCountingSemaphoreTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 2UL );
    }

    if( xAreRecursiveMutexTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 3UL );
    }

    /* Check that the register test 1 task is still running. */
    if( ulLastRegTest1Value == ulRegTest1LoopCounter ) {
        ulErrorFound |= ( 0x01UL << 4UL );
    }
    ulLastRegTest1Value = ulRegTest1LoopCounter;

    /* Check that the register test 2 task is still running. */
    if( ulLastRegTest2Value == ulRegTest2LoopCounter ) {
        ulErrorFound |= ( 0x01UL << 5UL );
    }
    ulLastRegTest2Value = ulRegTest2LoopCounter;

    /* Toggle the check LED to give an indication of the system status.  If
    the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
    everything is ok.  A faster toggle indicates an error. */
    vParTestToggleLED( mainCHECK_LED );

    /* Have any errors been latched in ulErrorFound?  If so, shorten the
    period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
    This will result in an increase in the rate at which mainCHECK_LED
    toggles. */
    if( ulErrorFound != pdFALSE ) {
        if( lChangedTimerPeriodAlready == pdFALSE ) {
            lChangedTimerPeriodAlready = pdTRUE;

            /* This call to xTimerChangePeriod() uses a zero block time.
            Functions called from inside of a timer callback function must
            *never* attempt	to block. */
            xTimerChangePeriod( xTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
        }
    }
}

static void prvCheckTask( void *pvParameters )
{
TickType_t xNextWakeTime;
const TickType_t xCycleFrequency = 2500 / portTICK_PERIOD_MS;

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
		#if( configUSE_PREEMPTION != 0 )
		{
			/* These tasks are only created when preemption is used. */
			if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
			{
				pcStatusMessage = "Error: TimerDemo";
			}
		}
		#endif

		if( xAreEventGroupTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: EventGroup";
		}
	    else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: IntMath";
	    }
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
	    else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: SemTest";
	    }
	    else if( xArePollingQueuesStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: PollQueue";
	    }
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
	    else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: RecMutex";
		}
		else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: CountSem";
		}
		else if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: Death";
		}
		else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Dynamic";
		}
		else if( xAreQueueSetTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set";
		}
		else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue overwrite";
		}

		/* This is the only task that uses stdout so its ok to call printf()
		directly. */
		printf( "%s - %d\r\n", pcStatusMessage, xTaskGetTickCount() );
	}
}

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
	/* Check the standard demo tasks are running without error.   Latch the
	latest reported error in the pcStatusMessage character pointer. */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: GenQueue";
	}

	if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: QueuePeek\r\n";
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockQueue\r\n";
	}

	if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockTime\r\n";
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: SemTest\r\n";
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: Death\r\n";
	}

	if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: RecMutex\r\n";
	}

	if( xAreComTestTasksStillRunning() != pdPASS )
	{
		pcStatusMessage = "Error: ComTest\r\n";
	}

	if( xAreTimerDemoTasksStillRunning( ( mainCHECK_TIMER_PERIOD_MS ) ) != pdTRUE )
	{
		pcStatusMessage = "Error: TimerDemo";
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: PollQueue";
	}

	if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: CountSem";
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: DynamicPriority";
	}

	/* Toggle the check LED to give an indication of the system status.  If
	the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
	everything is ok.  A faster toggle indicates an error. */
	vParTestToggleLED( mainCHECK_LED );

	/* Have any errors been latch in pcStatusMessage?  If so, shorten the
	period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
	This will result in an increase in the rate at which mainCHECK_LED
	toggles. */
	if( pcStatusMessage != NULL )
	{
		/* This call to xTimerChangePeriod() uses a zero block time.  Functions
		called from inside of a timer callback function must *never* attempt
		to block. */
		xTimerChangePeriod( xCheckTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
	}
}

static void prvCheckTask( void *pvParameters )
{
TickType_t xDelayPeriod = mainNO_ERROR_CHECK_TASK_PERIOD;
TickType_t xLastExecutionTime;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
unsigned long ulErrorFound = pdFALSE;

	/* Just to stop compiler warnings. */
	( void ) pvParameters;

	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
	works correctly. */
	xLastExecutionTime = xTaskGetTickCount();

	/* Cycle for ever, delaying then checking all the other tasks are still
	operating without error.  The onboard LED is toggled on each iteration.
	If an error is detected then the delay period is decreased from
	mainNO_ERROR_CHECK_TASK_PERIOD to mainERROR_CHECK_TASK_PERIOD.  This has the
	effect of increasing the rate at which the onboard LED toggles, and in so
	doing gives visual feedback of the system status. */
	for( ;; )
	{
		/* Delay until it is time to execute again. */
		vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );

		/* Check all the demo tasks (other than the flash tasks) to ensure
		that they are all still running, and that none have detected an error. */
		if( xAreIntQueueTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 0UL;
		}

		if( xAreMathsTaskStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 1UL;
		}

		if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 2UL;
		}

		if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 3UL;
		}

		if ( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 4UL;
		}

		if ( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 5UL;
		}

		if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 6UL;
		}

		if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 7UL;
		}

		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 8UL;
		}

		if( xAreTimerDemoTasksStillRunning( ( TickType_t ) xDelayPeriod ) != pdPASS )
		{
			ulErrorFound = 1UL << 9UL;
		}

		if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = 1UL << 10UL;
		}

		if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			ulErrorFound = 1UL << 11UL;
		}

		if( xAreEventGroupTasksStillRunning() != pdPASS )
		{
			ulErrorFound = 1UL << 12UL;
		}

		if( xAreInterruptSemaphoreTasksStillRunning() != pdPASS )
		{
			ulErrorFound = 1UL << 13UL;
		}

		if( xAreQueueSetTasksStillRunning() != pdPASS )
		{
			ulErrorFound = 1UL << 14UL;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	{
		vDisplayMessage( "Alt blocking queues count unchanged!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Polling queue count unchanged!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreAltPollingQueuesStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Alt polling queue count unchanged!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Incorrect number of tasks running!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Semaphore take count unchanged!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Dynamic priority count unchanged!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}
	
	if( xAreMultiEventTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in multi events tasks!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreFlashCoRoutinesStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in co-routine flash tasks!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreHookCoRoutinesStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in tick hook to co-routine communications!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in block time test tasks!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreAltBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in fast block time test tasks!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in generic queue test task!\r\n" );
		sErrorHasOccurred = pdTRUE;		
	}

	if( xAreAltGenericQueueTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in fast generic queue test task!\r\n" );
		sErrorHasOccurred = pdTRUE;		
	}

	if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in queue peek test task!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in counting semaphore demo task!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		vDisplayMessage( "Error in recursive mutex tasks!\r\n" );
		sErrorHasOccurred = pdTRUE;
	}

	if( sErrorHasOccurred == pdFALSE )
	{
		vDisplayMessage( "OK " );
	}
}

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
unsigned long ulErrorOccurred = pdFALSE;

	/* Avoid compiler warnings. */
	( void ) xTimer;

	/* Have any of the standard demo tasks detected an error in their
	operation? */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 3UL );
	}
	else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 4UL );
	}
	else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 5UL );
	}
	else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 6UL );
	}
	else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 8UL );
	}
	else if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 9UL );
	}
	else if( xIsQueueOverwriteTaskStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 10UL );
	}
	else if( xAreQueueSetTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 11UL );
	}
	else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 12UL );
	}
	else if( xAreEventGroupTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 13UL );
	}
	else if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 14UL );
	}
	else if( xAreInterruptSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 15UL );
	}
	else if( xAreTimerDemoTasksStillRunning( mainCHECK_TIMER_PERIOD_MS ) != pdTRUE )
	{
		ulErrorOccurred |= 1UL << 16UL;
	}	
	else if( xAreIntQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= 1UL << 17UL;
	}

	
	/* Check that the register test 1 task is still running. */
	if( ulLastRegTest1Value == ulRegTest1LoopCounter )
	{
		ulErrorOccurred |= 1UL << 18UL;
	}
	ulLastRegTest1Value = ulRegTest1LoopCounter;

	/* Check that the register test 2 task is still running. */
	if( ulLastRegTest2Value == ulRegTest2LoopCounter )
	{
		ulErrorOccurred |= 1UL << 19UL;
	}
	ulLastRegTest2Value = ulRegTest2LoopCounter;

	if( ulErrorOccurred != pdFALSE )
	{
		/* An error occurred.  Increase the frequency at which the check timer
		toggles its LED to give visual feedback of the potential error
		condition. */
		if( lChangedTimerPeriodAlready == pdFALSE )
		{
			lChangedTimerPeriodAlready = pdTRUE;

			/* This call to xTimerChangePeriod() uses a zero block time.
			Functions called from inside of a timer callback function must
			*never* attempt	to block as to do so could impact other software
			timers. */
			xTimerChangePeriod( xTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
		}
	}

//.........这里部分代码省略.........

static void prvCheckTask( void *pvParameters )
{
TickType_t xNextWakeTime;
const TickType_t xCycleFrequency = pdMS_TO_TICKS( 2500UL );

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
		#if( configUSE_PREEMPTION != 0 )
		{
			/* These tasks are only created when preemption is used. */
			if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
			{
				pcStatusMessage = "Error: TimerDemo";
			}
		}
		#endif

		if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error:  Notification";
		}

		if( xAreInterruptSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: IntSem";
		}
		else if( xAreEventGroupTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: EventGroup";
		}
		else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: IntMath";
		}
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
		else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: SemTest";
		}
		else if( xArePollingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: PollQueue";
		}
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
		else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: RecMutex";
		}
		else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: CountSem";
		}
		else if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: Death";
		}
		else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Dynamic";
		}
		else if( xAreQueueSetTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set";
		}
		else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue overwrite";
		}
		else if( xAreQueueSetPollTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set polling";
		}
		else if( xAreBlockTimeTestTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Block time";
		}
//.........这里部分代码省略.........

static void prvCheckTask( void *pvParameters )
{
portTickType xNextWakeTime;
const portTickType xCycleFrequency = 1000 / portTICK_RATE_MS;
char *pcStatusMessage = "OK";

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
		if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
		{
			pcStatusMessage = "Error: TimerDemo";
		}
	    else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: IntMath";
	    }	
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{			
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
	    else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: SemTest";
	    }
	    else if( xArePollingQueuesStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: PollQueue";
	    }
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
	    else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: RecMutex";
		}
		else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: CountSem";
		}

		/* This is the only task that uses stdout so its ok to call printf() 
		directly. */
		printf( "%s - %d\r\n", pcStatusMessage, xTaskGetTickCount() );
	}
}

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0, ulLastHighFrequencyTimerInterrupts = 0;
static const unsigned long ulExpectedHighFrequencyInterrupts = ( ( mainTEST_INTERRUPT_FREQUENCY / 1000UL ) * mainCHECK_TIMER_PERIOD_MS ) - 10; /* 10 allows for a margin of error. */
unsigned long ulErrorOccurred = pdFALSE;

/* The count of the high frequency timer interrupts. */
extern unsigned long ulHighFrequencyTimerInterrupts;

	/* Avoid compiler warnings. */
	( void ) xTimer;

	/* Check that the register test 1 task is still running. */
	if( ulLastRegTest1Value == ulRegTest1Cycles )
	{
		ulErrorOccurred |= ( 0x01UL << 1UL );
	}
	ulLastRegTest1Value = ulRegTest1Cycles;


	/* Check that the register test 2 task is still running. */
	if( ulLastRegTest2Value == ulRegTest2Cycles )
	{
		ulErrorOccurred |= ( 0x01UL << 2UL );
	}
	ulLastRegTest2Value = ulRegTest2Cycles;

	/* Have any of the standard demo tasks detected an error in their
	operation? */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 3UL );
	}
	else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 4UL );
	}
	else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 5UL );
	}
	else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 6UL );
	}
	else if( xAreIntQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 7UL );
	}
	else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 8UL );
	}
	else if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 9UL );
	}
	else if( xIsQueueOverwriteTaskStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 10UL );
	}
	else if( xAreQueueSetTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 11UL );
	}
	else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 12UL );
	}
	else if( xAreEventGroupTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 13UL );
	}
	else if( xAreMathsTaskStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 15UL );
	}

	/* Ensure the expected number of high frequency interrupts have occurred. */
	if( ulLastHighFrequencyTimerInterrupts != 0 )
	{
		if( ( ulHighFrequencyTimerInterrupts - ulLastHighFrequencyTimerInterrupts ) < ulExpectedHighFrequencyInterrupts )
		{
			ulErrorOccurred |= ( 0x01UL << 14UL );
		}
	}
	ulLastHighFrequencyTimerInterrupts = ulHighFrequencyTimerInterrupts;

	if( ulErrorOccurred != pdFALSE )
	{
		/* An error occurred.  Increase the frequency at which the check timer
		toggles its LED to give visual feedback of the potential error
		condition. */
		if( lChangedTimerPeriodAlready == pdFALSE )
		{
			lChangedTimerPeriodAlready = pdTRUE;

			/* This call to xTimerChangePeriod() uses a zero block time.
			Functions called from inside of a timer callback function must
//.........这里部分代码省略.........

void vCheckTask( void *pvParameters )
{
unsigned long ulRow = 0;
portTickType xDelay = 0;
unsigned short usErrorCode = 0;
unsigned long ulIteration = 0;
extern unsigned portSHORT usMaxJitter;

	/* Intialise the sleeper. */
	xDelay = xTaskGetTickCount();
	
	for( ;; )
	{
		/* Perform this check every mainCHECK_DELAY milliseconds. */
		vTaskDelayUntil( &xDelay, mainCHECK_DELAY );
		
		/* Check that all of the Demo tasks are still running. */
		if( pdTRUE != xAreBlockingQueuesStillRunning() )
		{
			usErrorCode |= 0x1;
		}
		
		if( pdTRUE != xAreBlockTimeTestTasksStillRunning() )
		{
			usErrorCode |= 0x2;
		}
		
		if( pdTRUE != xAreCountingSemaphoreTasksStillRunning() )
		{
			usErrorCode |= 0x4;
		}
		
		if( pdTRUE != xIsCreateTaskStillRunning() )
		{
			usErrorCode |= 0x8;
		}
		
		if( pdTRUE != xAreDynamicPriorityTasksStillRunning() )
		{
			usErrorCode |= 0x10;
		}
		
		if( pdTRUE != xAreMathsTaskStillRunning() )
		{
			usErrorCode |= 0x20;
		}
		
		if( pdTRUE != xAreGenericQueueTasksStillRunning() )
		{
			usErrorCode |= 0x40;
		}
		
		if( pdTRUE != xAreIntegerMathsTaskStillRunning() )
		{
			usErrorCode |= 0x80;
		}
		
		if( pdTRUE != xArePollingQueuesStillRunning() )
		{
			usErrorCode |= 0x100;
		}
		
		if( pdTRUE != xAreQueuePeekTasksStillRunning() )
		{
			usErrorCode |= 0x200;
		}
				
		if( pdTRUE != xAreSemaphoreTasksStillRunning() )
		{
			usErrorCode |= 0x400;
		}
		
		if( pdTRUE != xAreComTestTasksStillRunning() )
		{
			usErrorCode |= 0x800;
		}
		
		if( pdTRUE != xAreIntQueueTasksStillRunning() )
		{
			usErrorCode |= 0x1000;
		}

		/* Clear the display. */
		LCD_Character_Display_ClearDisplay();
		if( 0 == usErrorCode )
		{
			LCD_Character_Display_Position( ( ulRow ) & 0x1, 0);
			LCD_Character_Display_PrintString( "Pass: " );
			LCD_Character_Display_PrintNumber( ulIteration++ );
			LCD_Character_Display_Position( ( ++ulRow ) & 0x1, 0 );
			LCD_Character_Display_PrintString( "Jitter(ns):" );
			LCD_Character_Display_PrintNumber( ( usMaxJitter * mainNS_PER_CLOCK ) );
		}
		else
		{
			/* Do something to indicate the failure. */
			LCD_Character_Display_Position( ( ulRow ) & 0x1, 0 );
			LCD_Character_Display_PrintString( "Fail at: " );
			LCD_Character_Display_PrintNumber( ulIteration );
			LCD_Character_Display_Position( ( ++ulRow ) & 0x1, 0 );
//.........这里部分代码省略.........

static void prvCheckTask( void *pvParameters )
{
portTickType xDelayPeriod = mainNO_ERROR_CHECK_TASK_PERIOD;
portTickType xLastExecutionTime;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
unsigned long ulErrorFound = pdFALSE;

	/* Just to stop compiler warnings. */
	( void ) pvParameters;

	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
	works correctly. */
	xLastExecutionTime = xTaskGetTickCount();

	/* Cycle for ever, delaying then checking all the other tasks are still
	operating without error.  The onboard LED is toggled on each iteration.
	If an error is detected then the delay period is decreased from
	mainNO_ERROR_CHECK_TASK_PERIOD to mainERROR_CHECK_TASK_PERIOD.  This has the
	effect of increasing the rate at which the onboard LED toggles, and in so
	doing gives visual feedback of the system status. */
	for( ;; )
	{
		/* Delay until it is time to execute again. */
		vTaskDelayUntil( &xLastExecutionTime, xDelayPeriod );

		/* Check all the demo tasks (other than the flash tasks) to ensure
		that they are all still running, and that none have detected an error. */
		if( xAreMathsTaskStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if ( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if ( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xAreTimerDemoTasksStillRunning( ( portTickType ) mainNO_ERROR_CHECK_TASK_PERIOD ) != pdPASS )
		{
			ulErrorFound = pdTRUE;
		}

		if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorFound = pdTRUE;
		}

		if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			ulErrorFound = pdTRUE;
		}

		#if mainINCLUDE_FAT_SL_DEMO == 0
		{
			if( xAreComTestTasksStillRunning() != pdTRUE )
			{
				ulErrorFound = pdTRUE;
			}
		}
		#endif

		/* Check that the register test 1 task is still running. */
		if( ulLastRegTest1Value == ulRegTest1LoopCounter )
		{
			ulErrorFound = pdTRUE;
		}
		ulLastRegTest1Value = ulRegTest1LoopCounter;

		/* Check that the register test 2 task is still running. */
		if( ulLastRegTest2Value == ulRegTest2LoopCounter )
//.........这里部分代码省略.........

static void prvCheckTask( void * pvParameters )
{
portTickType xNextWakeTime, xPeriod = mainNO_ERROR_PERIOD;
static volatile unsigned long ulErrorCode = 0UL;

	/* Just to remove the compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime prior to its first use.  From this point on
	the value of the variable is handled automatically by the kernel. */
	xNextWakeTime = xTaskGetTickCount();
	
	for( ;; )
	{
		/* Delay until it is time for this task to execute again. */
		vTaskDelayUntil( &xNextWakeTime, xPeriod );
		
		/* Check all the other tasks in the system - latch any reported errors
		into the ulErrorCode variable. */
		if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x01UL;
		}

		if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x02UL;
		}

		if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x04UL;
		}

		if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x08UL;
		}

		if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x10UL;
		}

		if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x20UL;
		}

		if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x40UL;
		}

		if( xArePollingQueuesStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x80UL;
		}

		if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x100UL;
		}

		if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x200UL;
		}

		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x400UL;
		}
		
		if( xAreComTestTasksStillRunning() != pdTRUE )
		{
			ulErrorCode |= 0x800UL;
		}
		
		/* Reduce the block period and in so doing increase the frequency at
		which this task executes if any errors have been latched.  The increased
		frequency causes the LED toggle rate to increase and so gives some
		visual feedback that an error has occurred. */
		if( ulErrorCode != 0x00 )
		{
			xPeriod = mainERROR_PERIOD;
		}
		
		/* Finally toggle the LED. */
		vParTestToggleLED( LED_POWER );
	}
}

static void prvCheckTimerCallback( xTimerHandle xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE;

	/* Check the standard demo tasks are running without error.   Latch the
	latest reported error in the pcStatusMessage character pointer.  The latched
	string can be viewed using the embedded web server - it is displayed at
	the bottom of the served "task stats" page. */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: GenQueue";
	}

	if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: QueuePeek\n";
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockQueue\n";
	}

	if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockTime\n";
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: SemTest\n";
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: Death\n";
	}

	if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: RecMutex\n";
	}

	if( xAreTimerDemoTasksStillRunning( ( mainCHECK_TIMER_PERIOD_MS ) ) != pdTRUE )
	{
		pcStatusMessage = "Error: TimerDemo\n";
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: PollQueue\n";
	}

	if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: CountSem\n";
	}
	
	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: DynamicPriority\n";
	}
	
	/* Toggle the check LED to give an indication of the system status.  If
	the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
	everything is ok.  A faster toggle indicates an error. */
	vParTestToggleLED( mainCHECK_LED );

	/* Have any errors been latch in pcStatusMessage?  If so, shorten the
	period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
	This will result in an increase in the rate at which mainCHECK_LED
	toggles. */
	if( pcStatusMessage != NULL )
	{
		if( lChangedTimerPeriodAlready == pdFALSE )
		{
			lChangedTimerPeriodAlready = pdTRUE;
			printf( "%s", pcStatusMessage );
			
			/* This call to xTimerChangePeriod() uses a zero block time.  
			Functions called from inside of a timer callback function must 
			*never* attempt	to block. */
			xTimerChangePeriod( xCheckTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
		}
	}
}