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Add additional configASSERTS() to some standard demo tasks.

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Use own rand() function in QueueSet.c to prevent library versions being referenced.
This commit is contained in:
Richard Barry 2013-09-01 19:45:06 +00:00
parent 33bd63e287
commit ed399e801e
3 changed files with 132 additions and 52 deletions
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70
FreeRTOS/Demo/Common/Minimal/dynamic.c
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@ -72,14 +72,14 @@
*
* One counter task loops indefinitely, incrementing the shared count variable
* on each iteration. To ensure it has exclusive access to the variable it
* raises it's priority above that of the controller task before each
* increment, lowering it again to it's original priority before starting the
* raises its priority above that of the controller task before each
* increment, lowering it again to its original priority before starting the
* next iteration.
*
* The other counter task increments the shared count variable on each
* iteration of it's loop until the count has reached a limit of 0xff - at
* iteration of its loop until the count has reached a limit of 0xff - at
* which point it suspends itself. It will not start a new loop until the
* controller task has made it "ready" again by calling vTaskResume ().
* controller task has made it "ready" again by calling vTaskResume().
* This second counter task operates at a higher priority than controller
* task so does not need to worry about mutual exclusion of the counter
* variable.
@ -105,7 +105,7 @@
* continuous count task, and moves on to its second section.
*
* At the start of the second section the shared variable is cleared to zero.
* The limited count task is then woken from it's suspension by a call to
* The limited count task is then woken from its suspension by a call to
* vTaskResume (). As this counter task operates at a higher priority than
* the controller task the controller task should not run again until the
* shared variable has been counted up to the limited value causing the counter
@ -153,11 +153,11 @@ static portTASK_FUNCTION_PROTO( vQueueSendWhenSuspendedTask, pvParameters );
/* Handles to the two counter tasks. These could be passed in as parameters
to the controller task to prevent them having to be file scope. */
static xTaskHandle xContinousIncrementHandle, xLimitedIncrementHandle;
static xTaskHandle xContinuousIncrementHandle, xLimitedIncrementHandle;
/* The shared counter variable. This is passed in as a parameter to the two
counter variables for demonstration purposes. */
static unsigned long ulCounter;
static volatile unsigned long ulCounter;
/* Variables used to check that the tasks are still operating without error.
Each complete iteration of the controller task increments this variable
@ -192,7 +192,7 @@ void vStartDynamicPriorityTasks( void )
defined to be less than 1. */
vQueueAddToRegistry( xSuspendedTestQueue, ( signed char * ) "Suspended_Test_Queue" );
xTaskCreate( vContinuousIncrementTask, ( signed char * ) "CNT_INC", priSTACK_SIZE, ( void * ) &ulCounter, tskIDLE_PRIORITY, &xContinousIncrementHandle );
xTaskCreate( vContinuousIncrementTask, ( signed char * ) "CNT_INC", priSTACK_SIZE, ( void * ) &ulCounter, tskIDLE_PRIORITY, &xContinuousIncrementHandle );
xTaskCreate( vLimitedIncrementTask, ( signed char * ) "LIM_INC", priSTACK_SIZE, ( void * ) &ulCounter, tskIDLE_PRIORITY + 1, &xLimitedIncrementHandle );
xTaskCreate( vCounterControlTask, ( signed char * ) "C_CTRL", priSTACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
xTaskCreate( vQueueSendWhenSuspendedTask, ( signed char * ) "SUSP_TX", priSTACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
@ -235,7 +235,7 @@ unsigned long *pulCounter;
*/
static portTASK_FUNCTION( vContinuousIncrementTask, pvParameters )
{
unsigned long *pulCounter;
volatile unsigned long *pulCounter;
unsigned portBASE_TYPE uxOurPriority;
/* Take a pointer to the shared variable from the parameters passed into
@ -248,11 +248,15 @@ unsigned portBASE_TYPE uxOurPriority;
for( ;; )
{
/* Raise our priority above the controller task to ensure a context
switch does not occur while we are accessing this variable. */
/* Raise the priority above the controller task to ensure a context
switch does not occur while the variable is being accessed. */
vTaskPrioritySet( NULL, uxOurPriority + 1 );
{
configASSERT( ( uxTaskPriorityGet( NULL ) == ( uxOurPriority + 1 ) ) );
( *pulCounter )++;
}
vTaskPrioritySet( NULL, uxOurPriority );
configASSERT( ( uxTaskPriorityGet( NULL ) == uxOurPriority ) );
}
}
/*-----------------------------------------------------------*/
@ -280,10 +284,26 @@ short sError = pdFALSE;
for( sLoops = 0; sLoops < priLOOPS; sLoops++ )
{
/* Suspend the continuous count task so we can take a mirror of the
shared variable without risk of corruption. */
vTaskSuspend( xContinousIncrementHandle );
shared variable without risk of corruption. This is not really
needed as the other task raises its priority above this task's
priority. */
vTaskSuspend( xContinuousIncrementHandle );
{
#if( INCLUDE_eTaskGetState == 1 )
{
configASSERT( eTaskGetState( xContinuousIncrementHandle ) == eSuspended );
}
#endif /* INCLUDE_eTaskGetState */
ulLastCounter = ulCounter;
vTaskResume( xContinousIncrementHandle );
}
vTaskResume( xContinuousIncrementHandle );
#if( INCLUDE_eTaskGetState == 1 )
{
configASSERT( eTaskGetState( xContinuousIncrementHandle ) == eReady );
}
#endif /* INCLUDE_eTaskGetState */
/* Now delay to ensure the other task has processor time. */
vTaskDelay( priSLEEP_TIME );
@ -303,20 +323,34 @@ short sError = pdFALSE;
xTaskResumeAll();
}
/* Second section: */
/* Suspend the continuous counter task so it stops accessing the shared variable. */
vTaskSuspend( xContinousIncrementHandle );
/* Suspend the continuous counter task so it stops accessing the shared
variable. */
vTaskSuspend( xContinuousIncrementHandle );
/* Reset the variable. */
ulCounter = ( unsigned long ) 0;
#if( INCLUDE_eTaskGetState == 1 )
{
configASSERT( eTaskGetState( xLimitedIncrementHandle ) == eSuspended );
}
#endif /* INCLUDE_eTaskGetState */
/* Resume the limited count task which has a higher priority than us.
We should therefore not return from this call until the limited count
task has suspended itself with a known value in the counter variable. */
vTaskResume( xLimitedIncrementHandle );
/* This task should not run again until xLimitedIncrementHandle has
suspended itself. */
#if( INCLUDE_eTaskGetState == 1 )
{
configASSERT( eTaskGetState( xLimitedIncrementHandle ) == eSuspended );
}
#endif /* INCLUDE_eTaskGetState */
/* Does the counter variable have the expected value? */
if( ulCounter != priMAX_COUNT )
{
@ -332,7 +366,7 @@ short sError = pdFALSE;
}
/* Resume the continuous count task and do it all again. */
vTaskResume( xContinousIncrementHandle );
vTaskResume( xContinuousIncrementHandle );
}
}
/*-----------------------------------------------------------*/