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Allow the task priorities to be overwritten.

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Richard Barry 2008-11-16 19:21:25 +00:00
parent 90ac00641c
commit 4b141c691e
1 changed files with 22 additions and 17 deletions
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39
Demo/Common/Minimal/blocktim.c
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@ -37,13 +37,13 @@
Please ensure to read the configuration and relevant port sections of the Please ensure to read the configuration and relevant port sections of the
online documentation. online documentation.
http://www.FreeRTOS.org - Documentation, latest information, license and http://www.FreeRTOS.org - Documentation, latest information, license and
contact details. contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems. critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting, http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services. licensing and training services.
*/ */
@ -61,9 +61,14 @@
/* Demo includes. */ /* Demo includes. */
#include "blocktim.h" #include "blocktim.h"
/* Task priorities. */ /* Task priorities. Allow these to be overridden. */
#define bktPRIMARY_PRIORITY ( 3 ) #ifndef bktPRIMARY_PRIORITY
#define bktSECONDARY_PRIORITY ( 2 ) #define bktPRIMARY_PRIORITY ( 3 )
#endif
#ifndef bktSECONDARY_PRIORITY
#define bktSECONDARY_PRIORITY ( 2 )
#endif
/* Task behaviour. */ /* Task behaviour. */
#define bktQUEUE_LENGTH ( 5 ) #define bktQUEUE_LENGTH ( 5 )
@ -101,10 +106,10 @@ void vCreateBlockTimeTasks( void )
xTestQueue = xQueueCreate( bktQUEUE_LENGTH, sizeof( portBASE_TYPE ) ); xTestQueue = xQueueCreate( bktQUEUE_LENGTH, sizeof( portBASE_TYPE ) );
/* vQueueAddToRegistry() adds the queue to the queue registry, if one is /* vQueueAddToRegistry() adds the queue to the queue registry, if one is
in use. The queue registry is provided as a means for kernel aware in use. The queue registry is provided as a means for kernel aware
debuggers to locate queues and has no purpose if a kernel aware debugger debuggers to locate queues and has no purpose if a kernel aware debugger
is not being used. The call to vQueueAddToRegistry() will be removed is not being used. The call to vQueueAddToRegistry() will be removed
by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is
defined to be less than 1. */ defined to be less than 1. */
vQueueAddToRegistry( xTestQueue, ( signed portCHAR * ) "Block_Time_Queue" ); vQueueAddToRegistry( xTestQueue, ( signed portCHAR * ) "Block_Time_Queue" );
@ -135,7 +140,7 @@ portTickType xTimeToBlock, xBlockedTime;
xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem; xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;
xTimeWhenBlocking = xTaskGetTickCount(); xTimeWhenBlocking = xTaskGetTickCount();
/* We should unblock after xTimeToBlock having not received /* We should unblock after xTimeToBlock having not received
anything on the queue. */ anything on the queue. */
if( xQueueReceive( xTestQueue, &xData, xTimeToBlock ) != errQUEUE_EMPTY ) if( xQueueReceive( xTestQueue, &xData, xTimeToBlock ) != errQUEUE_EMPTY )
@ -186,7 +191,7 @@ portTickType xTimeToBlock, xBlockedTime;
xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem; xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;
xTimeWhenBlocking = xTaskGetTickCount(); xTimeWhenBlocking = xTaskGetTickCount();
/* We should unblock after xTimeToBlock having not received /* We should unblock after xTimeToBlock having not received
anything on the queue. */ anything on the queue. */
if( xQueueSend( xTestQueue, &xItem, xTimeToBlock ) != errQUEUE_FULL ) if( xQueueSend( xTestQueue, &xItem, xTimeToBlock ) != errQUEUE_FULL )
@ -240,7 +245,7 @@ portTickType xTimeToBlock, xBlockedTime;
for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ ) for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
{ {
/* Now when we make space on the queue the other task should wake /* Now when we make space on the queue the other task should wake
but not execute as this task has higher priority. */ but not execute as this task has higher priority. */
if( xQueueReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS ) if( xQueueReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )
{ {
xErrorOccurred = pdTRUE; xErrorOccurred = pdTRUE;
@ -274,7 +279,7 @@ portTickType xTimeToBlock, xBlockedTime;
} }
/* Set the priority back down. */ /* Set the priority back down. */
vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY ); vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );
} }
/* Let the other task timeout. When it unblockes it will check that it /* Let the other task timeout. When it unblockes it will check that it
@ -301,7 +306,7 @@ portTickType xTimeToBlock, xBlockedTime;
xErrorOccurred = pdTRUE; xErrorOccurred = pdTRUE;
} }
} }
/* Wake the other task so it blocks attempting to read from the /* Wake the other task so it blocks attempting to read from the
already empty queue. */ already empty queue. */
vTaskResume( xSecondary ); vTaskResume( xSecondary );
@ -317,7 +322,7 @@ portTickType xTimeToBlock, xBlockedTime;
for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ ) for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
{ {
/* Now when we place an item on the queue the other task should /* Now when we place an item on the queue the other task should
wake but not execute as this task has higher priority. */ wake but not execute as this task has higher priority. */
if( xQueueSend( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS ) if( xQueueSend( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )
{ {
xErrorOccurred = pdTRUE; xErrorOccurred = pdTRUE;
@ -349,7 +354,7 @@ portTickType xTimeToBlock, xBlockedTime;
queue function. */ queue function. */
xErrorOccurred = pdTRUE; xErrorOccurred = pdTRUE;
} }
vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY ); vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );
} }
/* Let the other task timeout. When it unblockes it will check that it /* Let the other task timeout. When it unblockes it will check that it
@ -387,7 +392,7 @@ portBASE_TYPE xData;
full so we block. Note the time before we block so we can check the full so we block. Note the time before we block so we can check the
wake time is as per that expected. */ wake time is as per that expected. */
xTimeWhenBlocking = xTaskGetTickCount(); xTimeWhenBlocking = xTaskGetTickCount();
/* We should unblock after bktTIME_TO_BLOCK having not received /* We should unblock after bktTIME_TO_BLOCK having not received
anything on the queue. */ anything on the queue. */
xData = 0; xData = 0;
@ -423,7 +428,7 @@ portBASE_TYPE xData;
As per test three, but with the send and receive reversed. */ As per test three, but with the send and receive reversed. */
xTimeWhenBlocking = xTaskGetTickCount(); xTimeWhenBlocking = xTaskGetTickCount();
/* We should unblock after bktTIME_TO_BLOCK having not received /* We should unblock after bktTIME_TO_BLOCK having not received
anything on the queue. */ anything on the queue. */
xRunIndicator = bktRUN_INDICATOR; xRunIndicator = bktRUN_INDICATOR;