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1075 lines
36 KiB
C
1075 lines
36 KiB
C
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/*
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FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/*
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* This file contains fairly comprehensive checks on the behaviour of event
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* groups. It is not intended to be a user friendly demonstration of the
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* event groups API.
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*
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* NOTE: The tests implemented in this file are informal 'sanity' tests
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* only and are not part of the module tests that make use of the
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* mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
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*/
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/* Scheduler include files. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "event_groups.h"
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/* Demo app includes. */
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#include "EventGroupsDemo.h"
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#if( INCLUDE_eTaskGetState != 1 )
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#error INCLUDE_eTaskGetState must be set to 1 in FreeRTOSConfig.h to use this demo file.
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#endif
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/* Priorities used by the tasks. */
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#define ebSET_BIT_TASK_PRIORITY ( tskIDLE_PRIORITY )
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#define ebWAIT_BIT_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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/* Generic bit definitions. */
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#define ebBIT_0 ( 0x01UL )
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#define ebBIT_1 ( 0x02UL )
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#define ebBIT_2 ( 0x04UL )
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#define ebBIT_3 ( 0x08UL )
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#define ebBIT_4 ( 0x10UL )
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#define ebBIT_5 ( 0x20UL )
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#define ebBIT_6 ( 0x40UL )
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#define ebBIT_7 ( 0x80UL )
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/* Combinations of bits used in the demo. */
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#define ebCOMBINED_BITS ( ebBIT_1 | ebBIT_5 | ebBIT_7 )
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#define ebALL_BITS ( ebBIT_0 | ebBIT_1 | ebBIT_2 | ebBIT_3 | ebBIT_4 | ebBIT_5 | ebBIT_6 | ebBIT_7 )
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/* Associate a bit to each task. These bits are used to identify all the tasks
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that synchronise with the xEventGroupSync() function. */
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#define ebSET_BIT_TASK_SYNC_BIT ebBIT_0
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#define ebWAIT_BIT_TASK_SYNC_BIT ebBIT_1
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#define ebRENDESVOUS_TASK_1_SYNC_BIT ebBIT_2
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#define ebRENDESVOUS_TASK_2_SYNC_BIT ebBIT_3
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#define ebALL_SYNC_BITS ( ebSET_BIT_TASK_SYNC_BIT | ebWAIT_BIT_TASK_SYNC_BIT | ebRENDESVOUS_TASK_1_SYNC_BIT | ebRENDESVOUS_TASK_2_SYNC_BIT )
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/* A block time of zero simply means "don't block". */
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#define ebDONT_BLOCK ( 0 )
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/* A 5ms delay. */
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#define ebSHORT_DELAY ( 5 / portTICK_PERIOD_MS )
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/* Used in the selective bits test which checks no, one or both tasks blocked on
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event bits in a group are unblocked as appropriate as different bits get set. */
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#define ebSELECTIVE_BITS_1 0x03
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#define ebSELECTIVE_BITS_2 0x05
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/*-----------------------------------------------------------*/
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/*
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* NOTE: The tests implemented in this function are informal 'sanity' tests
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* only and are not part of the module tests that make use of the
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* mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
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*
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* The master test task. This task:
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*
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* 1) Calls prvSelectiveBitsTestMasterFunction() to test the behaviour when two
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* tasks are blocked on different bits in an event group. The counterpart of
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* this test is implemented by the prvSelectiveBitsTestSlaveFunction()
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* function (which is called by the two tasks that block on the event group).
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*
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* 2) Calls prvBitCombinationTestMasterFunction() to test the behaviour when
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* just one task is blocked on various combinations of bits within an event
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* group. The counterpart of this test is implemented within the 'test
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* slave' task.
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*
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* 3) Calls prvPerformTaskSyncTests() to test task synchronisation behaviour.
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*/
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static void prvTestMasterTask( void *pvParameters );
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/*
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* A helper task that enables the 'test master' task to perform several
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* behavioural tests. See the comments above the prvTestMasterTask() prototype
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* above.
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*/
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static void prvTestSlaveTask( void *pvParameters );
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/*
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* The part of the test that is performed between the 'test master' task and the
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* 'test slave' task to test the behaviour when the slave blocks on various
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* event bit combinations.
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*/
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static BaseType_t prvBitCombinationTestMasterFunction( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle );
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/*
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* The part of the test that uses all the tasks to test the task synchronisation
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* behaviour.
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*/
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static BaseType_t prvPerformTaskSyncTests( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle );
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/*
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* Two instances of prvSyncTask() are created. They start by calling
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* prvSelectiveBitsTestSlaveFunction() to act as slaves when the test master is
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* executing the prvSelectiveBitsTestMasterFunction() function. They then loop
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* to test the task synchronisation (rendezvous) behaviour.
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*/
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static void prvSyncTask( void *pvParameters );
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/*
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* Functions used in a test that blocks two tasks on various different bits
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* within an event group - then sets each bit in turn and checks that the
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* correct tasks unblock at the correct times.
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*/
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static BaseType_t prvSelectiveBitsTestMasterFunction( void );
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static void prvSelectiveBitsTestSlaveFunction( void );
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/*-----------------------------------------------------------*/
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/* Variables that are incremented by the tasks on each cycle provided no errors
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have been found. Used to detect an error or stall in the test cycling. */
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static volatile uint32_t ulTestMasterCycles = 0, ulTestSlaveCycles = 0, ulISRCycles = 0;
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/* The event group used by all the task based tests. */
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static EventGroupHandle_t xEventGroup = NULL;
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/* The event group used by the interrupt based tests. */
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static EventGroupHandle_t xISREventGroup = NULL;
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/* Handles to the tasks that only take part in the synchronisation calls. */
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static TaskHandle_t xSyncTask1 = NULL, xSyncTask2 = NULL;
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/*-----------------------------------------------------------*/
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void vStartEventGroupTasks( void )
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{
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TaskHandle_t xTestSlaveTaskHandle;
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/*
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* This file contains fairly comprehensive checks on the behaviour of event
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* groups. It is not intended to be a user friendly demonstration of the
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* event groups API.
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*
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* NOTE: The tests implemented in this file are informal 'sanity' tests
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* only and are not part of the module tests that make use of the
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* mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
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*
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* Create the test tasks as described at the top of this file.
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*/
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xTaskCreate( prvTestSlaveTask, "WaitO", configMINIMAL_STACK_SIZE, NULL, ebWAIT_BIT_TASK_PRIORITY, &xTestSlaveTaskHandle );
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xTaskCreate( prvTestMasterTask, "SetB", configMINIMAL_STACK_SIZE, ( void * ) xTestSlaveTaskHandle, ebSET_BIT_TASK_PRIORITY, NULL );
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xTaskCreate( prvSyncTask, "Rndv", configMINIMAL_STACK_SIZE, ( void * ) ebRENDESVOUS_TASK_1_SYNC_BIT, ebWAIT_BIT_TASK_PRIORITY, &xSyncTask1 );
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xTaskCreate( prvSyncTask, "Rndv", configMINIMAL_STACK_SIZE, ( void * ) ebRENDESVOUS_TASK_2_SYNC_BIT, ebWAIT_BIT_TASK_PRIORITY, &xSyncTask2 );
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/* If the last task was created then the others will have been too. */
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configASSERT( xSyncTask2 );
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/* Create the event group used by the ISR tests. The event group used by
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the tasks is created by the tasks themselves. */
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xISREventGroup = xEventGroupCreate();
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configASSERT( xISREventGroup );
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}
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/*-----------------------------------------------------------*/
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static void prvTestMasterTask( void *pvParameters )
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{
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BaseType_t xError;
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/* The handle to the slave task is passed in as the task parameter. */
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TaskHandle_t xTestSlaveTaskHandle = ( TaskHandle_t ) pvParameters;
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/* Avoid compiler warnings. */
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( void ) pvParameters;
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/* Create the event group used by the tasks ready for the initial tests. */
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xEventGroup = xEventGroupCreate();
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configASSERT( xEventGroup );
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/* Perform the tests that block two tasks on different combinations of bits,
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then set each bit in turn and check the correct tasks unblock at the correct
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times. */
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xError = prvSelectiveBitsTestMasterFunction();
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for( ;; )
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{
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/* Recreate the event group ready for the next cycle. */
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xEventGroup = xEventGroupCreate();
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configASSERT( xEventGroup );
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/* Perform the tests that check the behaviour when a single task is
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blocked on various combinations of event bits. */
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xError = prvBitCombinationTestMasterFunction( xError, xTestSlaveTaskHandle );
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/* Perform the task synchronisation tests. */
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xError = prvPerformTaskSyncTests( xError, xTestSlaveTaskHandle );
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/* Delete the event group. */
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vEventGroupDelete( xEventGroup );
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/* Now all the other tasks should have completed and suspended
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themselves ready for the next go around the loop. */
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if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
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{
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xError = pdTRUE;
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}
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if( eTaskGetState( xSyncTask1 ) != eSuspended )
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{
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xError = pdTRUE;
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}
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if( eTaskGetState( xSyncTask2 ) != eSuspended )
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{
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xError = pdTRUE;
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}
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/* Only increment the cycle variable if no errors have been detected. */
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if( xError == pdFALSE )
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{
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ulTestMasterCycles++;
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}
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configASSERT( xError == pdFALSE );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvSyncTask( void *pvParameters )
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{
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EventBits_t uxSynchronisationBit, uxReturned;
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/* A few tests that check the behaviour when two tasks are blocked on
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various different bits within an event group are performed before this task
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enters its infinite loop to carry out its main demo function. */
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prvSelectiveBitsTestSlaveFunction();
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/* The bit to use to indicate this task is at the synchronisation point is
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passed in as the task parameter. */
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uxSynchronisationBit = ( EventBits_t ) pvParameters;
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for( ;; )
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{
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/* Now this task takes part in a task synchronisation - sometimes known
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as a 'rendezvous'. Its execution pattern is controlled by the 'test
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master' task, which is responsible for taking this task out of the
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Suspended state when it is time to test the synchronisation behaviour.
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See: http://www.freertos.org/xEventGroupSync.html. */
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vTaskSuspend( NULL );
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/* Set the bit that indicates this task is at the synchronisation
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point. The first time this is done the 'test master' task has a lower
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priority than this task so this task will get to the sync point before
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the set bits task. */
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uxReturned = xEventGroupSync( xEventGroup, /* The event group used for the synchronisation. */
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uxSynchronisationBit, /* The bit to set in the event group to indicate this task is at the sync point. */
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ebALL_SYNC_BITS,/* The bits to wait for - these bits are set by the other tasks taking part in the sync. */
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portMAX_DELAY );/* The maximum time to wait for the sync condition to be met before giving up. */
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/* A max delay was used, so this task should only exit the above
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function call when the sync condition is met. Check this is the
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case. */
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configASSERT( ( uxReturned & ebALL_SYNC_BITS ) == ebALL_SYNC_BITS );
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/* Remove compiler warning if configASSERT() is not defined. */
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( void ) uxReturned;
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/* Wait until the 'test master' task unsuspends this task again. */
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vTaskSuspend( NULL );
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/* Set the bit that indicates this task is at the synchronisation
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point again. This time the 'test master' task has a higher priority
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than this task so will get to the sync point before this task. */
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uxReturned = xEventGroupSync( xEventGroup, uxSynchronisationBit, ebALL_SYNC_BITS, portMAX_DELAY );
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/* Again a max delay was used, so this task should only exit the above
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function call when the sync condition is met. Check this is the
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case. */
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|
|
configASSERT( ( uxReturned & ebALL_SYNC_BITS ) == ebALL_SYNC_BITS );
|
||
|
|
|
||
|
|
/* Block on the event group again. This time the event group is going
|
||
|
|
to be deleted while this task is blocked on it so it is expected that 0
|
||
|
|
be returned. */
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup, ebALL_SYNC_BITS, pdFALSE, pdTRUE, portMAX_DELAY );
|
||
|
|
configASSERT( uxReturned == 0 );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
static void prvTestSlaveTask( void *pvParameters )
|
||
|
|
{
|
||
|
|
EventBits_t uxReturned;
|
||
|
|
BaseType_t xError = pdFALSE;
|
||
|
|
|
||
|
|
/* Avoid compiler warnings. */
|
||
|
|
( void ) pvParameters;
|
||
|
|
|
||
|
|
for( ;; )
|
||
|
|
{
|
||
|
|
/**********************************************************************
|
||
|
|
* Part 1: This section is the counterpart to the
|
||
|
|
* prvBitCombinationTestMasterFunction() function which is called by the
|
||
|
|
* test master task.
|
||
|
|
***********************************************************************
|
||
|
|
|
||
|
|
This task is controller by the 'test master' task (which is
|
||
|
|
implemented by prvTestMasterTask()). Suspend until resumed by the
|
||
|
|
'test master' task. */
|
||
|
|
vTaskSuspend( NULL );
|
||
|
|
|
||
|
|
/* Wait indefinitely for one of the bits in ebCOMBINED_BITS to get
|
||
|
|
set. Clear the bit on exit. */
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup, /* The event group that contains the event bits being queried. */
|
||
|
|
ebBIT_1, /* The bit to wait for. */
|
||
|
|
pdTRUE, /* Clear the bit on exit. */
|
||
|
|
pdTRUE, /* Wait for all the bits (only one in this case anyway). */
|
||
|
|
portMAX_DELAY ); /* Block indefinitely to wait for the condition to be met. */
|
||
|
|
|
||
|
|
/* The 'test master' task set all the bits defined by ebCOMBINED_BITS,
|
||
|
|
only one of which was being waited for by this task. The return value
|
||
|
|
shows the state of the event bits when the task was unblocked, however
|
||
|
|
because the task was waiting for ebBIT_1 and 'clear on exit' was set to
|
||
|
|
the current state of the event bits will have ebBIT_1 clear. */
|
||
|
|
if( uxReturned != ebCOMBINED_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Now call xEventGroupWaitBits() again, this time waiting for all the
|
||
|
|
bits in ebCOMBINED_BITS to be set. This call should block until the
|
||
|
|
'test master' task sets ebBIT_1 - which was the bit cleared in the call
|
||
|
|
to xEventGroupWaitBits() above. */
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup,
|
||
|
|
ebCOMBINED_BITS, /* The bits being waited on. */
|
||
|
|
pdFALSE, /* Don't clear the bits on exit. */
|
||
|
|
pdTRUE, /* All the bits must be set to unblock. */
|
||
|
|
portMAX_DELAY );
|
||
|
|
|
||
|
|
/* Were all the bits set? */
|
||
|
|
if( ( uxReturned & ebCOMBINED_BITS ) != ebCOMBINED_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Suspend again to wait for the 'test master' task. */
|
||
|
|
vTaskSuspend( NULL );
|
||
|
|
|
||
|
|
/* Now call xEventGroupWaitBits() again, again waiting for all the bits
|
||
|
|
in ebCOMBINED_BITS to be set, but this time clearing the bits when the
|
||
|
|
task is unblocked. */
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup,
|
||
|
|
ebCOMBINED_BITS, /* The bits being waited on. */
|
||
|
|
pdTRUE, /* Clear the bits on exit. */
|
||
|
|
pdTRUE, /* All the bits must be set to unblock. */
|
||
|
|
portMAX_DELAY );
|
||
|
|
|
||
|
|
/* The 'test master' task set all the bits in the event group, so that
|
||
|
|
is the value that should have been returned. The bits defined by
|
||
|
|
ebCOMBINED_BITS will have been clear again in the current value though
|
||
|
|
as 'clear on exit' was set to pdTRUE. */
|
||
|
|
if( uxReturned != ebALL_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/**********************************************************************
|
||
|
|
* Part 2: This section is the counterpart to the
|
||
|
|
* prvPerformTaskSyncTests() function which is called by the
|
||
|
|
* test master task.
|
||
|
|
***********************************************************************
|
||
|
|
|
||
|
|
|
||
|
|
Once again wait for the 'test master' task to unsuspend this task
|
||
|
|
when it is time for the next test. */
|
||
|
|
vTaskSuspend( NULL );
|
||
|
|
|
||
|
|
/* Now peform a synchronisation with all the other tasks. At this point
|
||
|
|
the 'test master' task has the lowest priority so will get to the sync
|
||
|
|
point after all the other synchronising tasks. */
|
||
|
|
uxReturned = xEventGroupSync( xEventGroup, /* The event group used for the sync. */
|
||
|
|
ebWAIT_BIT_TASK_SYNC_BIT, /* The bit in the event group used to indicate this task is at the sync point. */
|
||
|
|
ebALL_SYNC_BITS, /* The bits to wait for. These bits are set by the other tasks taking part in the sync. */
|
||
|
|
portMAX_DELAY ); /* The maximum time to wait for the sync condition to be met before giving up. */
|
||
|
|
|
||
|
|
/* A sync with a max delay should only exit when all the synchronisation
|
||
|
|
bits are set... */
|
||
|
|
if( ( uxReturned & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ...but now the synchronisation bits should be clear again. Read back
|
||
|
|
the current value of the bits within the event group to check that is
|
||
|
|
the case. Setting the bits to zero will return the bits previous value
|
||
|
|
then leave all the bits clear. */
|
||
|
|
if( xEventGroupSetBits( xEventGroup, 0x00 ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the bits are indeed 0 now by simply reading then. */
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( xError == pdFALSE )
|
||
|
|
{
|
||
|
|
/* This task is still cycling without finding an error. */
|
||
|
|
ulTestSlaveCycles++;
|
||
|
|
}
|
||
|
|
|
||
|
|
vTaskSuspend( NULL );
|
||
|
|
|
||
|
|
/* This time sync when the 'test master' task has the highest priority
|
||
|
|
at the point where it sets its sync bit - so this time the 'test master'
|
||
|
|
task will get to the sync point before this task. */
|
||
|
|
uxReturned = xEventGroupSync( xEventGroup, ebWAIT_BIT_TASK_SYNC_BIT, ebALL_SYNC_BITS, portMAX_DELAY );
|
||
|
|
|
||
|
|
/* A sync with a max delay should only exit when all the synchronisation
|
||
|
|
bits are set... */
|
||
|
|
if( ( uxReturned & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ...but now the sync bits should be clear again. */
|
||
|
|
if( xEventGroupSetBits( xEventGroup, 0x00 ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Block on the event group again. This time the event group is going
|
||
|
|
to be deleted while this task is blocked on it, so it is expected that 0
|
||
|
|
will be returned. */
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup, ebALL_SYNC_BITS, pdFALSE, pdTRUE, portMAX_DELAY );
|
||
|
|
|
||
|
|
if( uxReturned != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( xError == pdFALSE )
|
||
|
|
{
|
||
|
|
/* This task is still cycling without finding an error. */
|
||
|
|
ulTestSlaveCycles++;
|
||
|
|
}
|
||
|
|
|
||
|
|
configASSERT( xError == pdFALSE );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
static BaseType_t prvPerformTaskSyncTests( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle )
|
||
|
|
{
|
||
|
|
EventBits_t uxBits;
|
||
|
|
|
||
|
|
/* The three tasks that take part in the synchronisation (rendezvous) are
|
||
|
|
expected to be in the suspended state at the start of the test. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Try a synch with no other tasks involved. First set all the bits other
|
||
|
|
than this task's bit. */
|
||
|
|
xEventGroupSetBits( xEventGroup, ( ebALL_SYNC_BITS & ~ebSET_BIT_TASK_SYNC_BIT ) );
|
||
|
|
|
||
|
|
/* Then wait on just one bit - the bit that is being set. */
|
||
|
|
uxBits = xEventGroupSync( xEventGroup, /* The event group used for the synchronisation. */
|
||
|
|
ebSET_BIT_TASK_SYNC_BIT,/* The bit set by this task when it reaches the sync point. */
|
||
|
|
ebSET_BIT_TASK_SYNC_BIT,/* The bits to wait for - in this case it is just waiting for itself. */
|
||
|
|
portMAX_DELAY ); /* The maximum time to wait for the sync condition to be met. */
|
||
|
|
|
||
|
|
/* A sync with a max delay should only exit when all the synchronise
|
||
|
|
bits are set...check that is the case. In this case there is only one
|
||
|
|
sync bit anyway. */
|
||
|
|
if( ( uxBits & ebSET_BIT_TASK_SYNC_BIT ) != ebSET_BIT_TASK_SYNC_BIT )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ...but now the sync bits should be clear again, leaving all the other
|
||
|
|
bits set (as only one bit was being waited for). */
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != ( ebALL_SYNC_BITS & ~ebSET_BIT_TASK_SYNC_BIT ) )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clear all the bits to zero again. */
|
||
|
|
xEventGroupClearBits( xEventGroup, ( ebALL_SYNC_BITS & ~ebSET_BIT_TASK_SYNC_BIT ) );
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Unsuspend the other tasks then check they have executed up to the
|
||
|
|
synchronisation point. */
|
||
|
|
vTaskResume( xTestSlaveTaskHandle );
|
||
|
|
vTaskResume( xSyncTask1 );
|
||
|
|
vTaskResume( xSyncTask2 );
|
||
|
|
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set this task's sync bit. */
|
||
|
|
uxBits = xEventGroupSync( xEventGroup, /* The event group used for the synchronisation. */
|
||
|
|
ebSET_BIT_TASK_SYNC_BIT,/* The bit set by this task when it reaches the sync point. */
|
||
|
|
ebALL_SYNC_BITS, /* The bits to wait for - these bits are set by the other tasks that take part in the sync. */
|
||
|
|
portMAX_DELAY ); /* The maximum time to wait for the sync condition to be met. */
|
||
|
|
|
||
|
|
/* A sync with a max delay should only exit when all the synchronise
|
||
|
|
bits are set...check that is the case. */
|
||
|
|
if( ( uxBits & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ...but now the sync bits should be clear again. */
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* The other tasks should now all be suspended again, ready for the next
|
||
|
|
synchronisation. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Sync again - but this time set the last necessary bit as the
|
||
|
|
highest priority task, rather than the lowest priority task. Unsuspend
|
||
|
|
the other tasks then check they have executed up to the synchronisation
|
||
|
|
point. */
|
||
|
|
vTaskResume( xTestSlaveTaskHandle );
|
||
|
|
vTaskResume( xSyncTask1 );
|
||
|
|
vTaskResume( xSyncTask2 );
|
||
|
|
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Raise the priority of this task above that of the other tasks. */
|
||
|
|
vTaskPrioritySet( NULL, ebWAIT_BIT_TASK_PRIORITY + 1 );
|
||
|
|
|
||
|
|
/* Set this task's sync bit. */
|
||
|
|
uxBits = xEventGroupSync( xEventGroup, ebSET_BIT_TASK_SYNC_BIT, ebALL_SYNC_BITS, portMAX_DELAY );
|
||
|
|
|
||
|
|
/* A sync with a max delay should only exit when all the synchronisation
|
||
|
|
bits are set... */
|
||
|
|
if( ( uxBits & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ...but now the sync bits should be clear again. */
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != 0 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* The other tasks should now all be in the ready state again, but not
|
||
|
|
executed yet as this task still has a higher relative priority. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eReady )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eReady )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eReady )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Reset the priority of this task back to its original value. */
|
||
|
|
vTaskPrioritySet( NULL, ebSET_BIT_TASK_PRIORITY );
|
||
|
|
|
||
|
|
/* Now all the other tasks should have reblocked on the event bits
|
||
|
|
to test the behaviour when the event bits are deleted. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return xError;
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
static BaseType_t prvBitCombinationTestMasterFunction( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle )
|
||
|
|
{
|
||
|
|
EventBits_t uxBits;
|
||
|
|
|
||
|
|
/* Resume the other task. It will block, pending a single bit from
|
||
|
|
within ebCOMBINED_BITS. */
|
||
|
|
vTaskResume( xTestSlaveTaskHandle );
|
||
|
|
|
||
|
|
/* Ensure the other task is blocked on the task. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set all the bits in ebCOMBINED_BITS - the 'test slave' task is only
|
||
|
|
blocked waiting for one of them. */
|
||
|
|
xEventGroupSetBits( xEventGroup, ebCOMBINED_BITS );
|
||
|
|
|
||
|
|
/* The 'test slave' task should now have executed, clearing ebBIT_1 (the
|
||
|
|
bit it was blocked on), then re-entered the Blocked state to wait for
|
||
|
|
all the other bits in ebCOMBINED_BITS to be set again. First check
|
||
|
|
ebBIT_1 is clear. */
|
||
|
|
uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
|
||
|
|
|
||
|
|
if( uxBits != ( ebCOMBINED_BITS & ~ebBIT_1 ) )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure the other task is still in the blocked state. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set all the bits other than ebBIT_1 - which is the bit that must be
|
||
|
|
set before the other task unblocks. */
|
||
|
|
xEventGroupSetBits( xEventGroup, ebALL_BITS & ~ebBIT_1 );
|
||
|
|
|
||
|
|
/* Ensure all the expected bits are still set. */
|
||
|
|
uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
|
||
|
|
|
||
|
|
if( uxBits != ( ebALL_BITS & ~ebBIT_1 ) )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure the other task is still in the blocked state. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Now also set ebBIT_1, which should unblock the other task, which will
|
||
|
|
then suspend itself. */
|
||
|
|
xEventGroupSetBits( xEventGroup, ebBIT_1 );
|
||
|
|
|
||
|
|
/* Ensure the other task is suspended. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The other task should not have cleared the bits - so all the bits
|
||
|
|
should still be set. */
|
||
|
|
if( xEventGroupSetBits( xEventGroup, 0x00 ) != ebALL_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clear ebBIT_1 again. */
|
||
|
|
if( xEventGroupClearBits( xEventGroup, ebBIT_1 ) != ebALL_BITS )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Resume the other task - which will wait on all the ebCOMBINED_BITS
|
||
|
|
again - this time clearing the bits when it is unblocked. */
|
||
|
|
vTaskResume( xTestSlaveTaskHandle );
|
||
|
|
|
||
|
|
/* Ensure the other task is blocked once again. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set the bit the other task is waiting for. */
|
||
|
|
xEventGroupSetBits( xEventGroup, ebBIT_1 );
|
||
|
|
|
||
|
|
/* Ensure the other task is suspended once again. */
|
||
|
|
if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The other task should have cleared the bits in ebCOMBINED_BITS.
|
||
|
|
Clear the remaining bits. */
|
||
|
|
uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
|
||
|
|
|
||
|
|
if( uxBits != ( ebALL_BITS & ~ebCOMBINED_BITS ) )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clear all bits ready for the sync with the other three tasks. The
|
||
|
|
value returned is the value prior to the bits being cleared. */
|
||
|
|
if( xEventGroupClearBits( xEventGroup, ebALL_BITS ) != ( ebALL_BITS & ~ebCOMBINED_BITS ) )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* The bits should be clear now. */
|
||
|
|
if( xEventGroupGetBits( xEventGroup ) != 0x00 )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return xError;
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
static void prvSelectiveBitsTestSlaveFunction( void )
|
||
|
|
{
|
||
|
|
EventBits_t uxPendBits, uxReturned;
|
||
|
|
|
||
|
|
/* Used in a test that blocks two tasks on various different bits within an
|
||
|
|
event group - then sets each bit in turn and checks that the correct tasks
|
||
|
|
unblock at the correct times.
|
||
|
|
|
||
|
|
This function is called by two different tasks - each of which will use a
|
||
|
|
different bit. Check the task handle to see which task the function was
|
||
|
|
called by. */
|
||
|
|
if( xTaskGetCurrentTaskHandle() == xSyncTask1 )
|
||
|
|
{
|
||
|
|
uxPendBits = ebSELECTIVE_BITS_1;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
uxPendBits = ebSELECTIVE_BITS_2;
|
||
|
|
}
|
||
|
|
|
||
|
|
for( ;; )
|
||
|
|
{
|
||
|
|
/* Wait until it is time to perform the next cycle of the test. The
|
||
|
|
task is unsuspended by the tests implemented in the
|
||
|
|
prvSelectiveBitsTestMasterFunction() function. */
|
||
|
|
vTaskSuspend( NULL );
|
||
|
|
uxReturned = xEventGroupWaitBits( xEventGroup, uxPendBits, pdTRUE, pdFALSE, portMAX_DELAY );
|
||
|
|
|
||
|
|
if( uxReturned == ( EventBits_t ) 0 )
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
static BaseType_t prvSelectiveBitsTestMasterFunction( void )
|
||
|
|
{
|
||
|
|
BaseType_t xError = pdFALSE;
|
||
|
|
EventBits_t uxBit;
|
||
|
|
|
||
|
|
/* Used in a test that blocks two tasks on various different bits within an
|
||
|
|
event group - then sets each bit in turn and checks that the correct tasks
|
||
|
|
unblock at the correct times. The two other tasks (xSyncTask1 and
|
||
|
|
xSyncTask2) call prvSelectiveBitsTestSlaveFunction() to perform their parts in
|
||
|
|
this test.
|
||
|
|
|
||
|
|
Both other tasks should start in the suspended state. */
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Test each bit in the byte individually. */
|
||
|
|
for( uxBit = 0x01; uxBit < 0x100; uxBit <<= 1 )
|
||
|
|
{
|
||
|
|
/* Resume both tasks. */
|
||
|
|
vTaskResume( xSyncTask1 );
|
||
|
|
vTaskResume( xSyncTask2 );
|
||
|
|
|
||
|
|
/* Now both tasks should be blocked on the event group. */
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set one bit. */
|
||
|
|
xEventGroupSetBits( xEventGroup, uxBit );
|
||
|
|
|
||
|
|
/* Is the bit set in the first set of selective bits? If so the first
|
||
|
|
sync task should have unblocked and returned to the suspended state. */
|
||
|
|
if( ( uxBit & ebSELECTIVE_BITS_1 ) == 0 )
|
||
|
|
{
|
||
|
|
/* Task should not have unblocked. */
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Task should have unblocked and returned to the suspended state. */
|
||
|
|
if( eTaskGetState( xSyncTask1 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Same checks for the second sync task. */
|
||
|
|
if( ( uxBit & ebSELECTIVE_BITS_2 ) == 0 )
|
||
|
|
{
|
||
|
|
/* Task should not have unblocked. */
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eBlocked )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Task should have unblocked and returned to the suspended state. */
|
||
|
|
if( eTaskGetState( xSyncTask2 ) != eSuspended )
|
||
|
|
{
|
||
|
|
xError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure both tasks are blocked on the event group again, then delete the
|
||
|
|
event group so the other tasks leave this portion of the test. */
|
||
|
|
vTaskResume( xSyncTask1 );
|
||
|
|
vTaskResume( xSyncTask2 );
|
||
|
|
|
||
|
|
/* Deleting the event group is the signal that the two other tasks should
|
||
|
|
leave the prvSelectiveBitsTestSlaveFunction() function and continue to the main
|
||
|
|
part of their functionality. */
|
||
|
|
vEventGroupDelete( xEventGroup );
|
||
|
|
|
||
|
|
return xError;
|
||
|
|
}
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
|
||
|
|
void vPeriodicEventGroupsProcessing( void )
|
||
|
|
{
|
||
|
|
static BaseType_t xCallCount = 0, xISRTestError = pdFALSE;
|
||
|
|
const BaseType_t xSetBitCount = 100, xGetBitsCount = 200, xClearBitsCount = 300;
|
||
|
|
const EventBits_t uxBitsToSet = 0x12U;
|
||
|
|
EventBits_t uxReturned;
|
||
|
|
BaseType_t xMessagePosted;
|
||
|
|
|
||
|
|
/* Called periodically from the tick hook to exercise the "FromISR"
|
||
|
|
functions. */
|
||
|
|
|
||
|
|
xCallCount++;
|
||
|
|
|
||
|
|
if( xCallCount == xSetBitCount )
|
||
|
|
{
|
||
|
|
/* All the event bits should start clear. */
|
||
|
|
uxReturned = xEventGroupGetBitsFromISR( xISREventGroup );
|
||
|
|
if( uxReturned != 0x00 )
|
||
|
|
{
|
||
|
|
xISRTestError = pdTRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Set the bits. This is called from the tick hook so it is not
|
||
|
|
necessary to use the last parameter to ensure a context switch
|
||
|
|
occurs immediately. */
|
||
|
|
xMessagePosted = xEventGroupSetBitsFromISR( xISREventGroup, uxBitsToSet, NULL );
|
||
|
|
if( xMessagePosted != pdPASS )
|
||
|
|
{
|
||
|
|
xISRTestError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if( xCallCount == xGetBitsCount )
|
||
|
|
{
|
||
|
|
/* Check the bits were set as expected. */
|
||
|
|
uxReturned = xEventGroupGetBitsFromISR( xISREventGroup );
|
||
|
|
if( uxReturned != uxBitsToSet )
|
||
|
|
{
|
||
|
|
xISRTestError = pdTRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if( xCallCount == xClearBitsCount )
|
||
|
|
{
|
||
|
|
/* Clear the bits again. */
|
||
|
|
uxReturned = xEventGroupClearBitsFromISR( xISREventGroup, uxBitsToSet );
|
||
|
|
|
||
|
|
/* Check the message was posted. */
|
||
|
|
if( uxReturned != pdPASS )
|
||
|
|
{
|
||
|
|
xISRTestError = pdTRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Go back to the start. */
|
||
|
|
xCallCount = 0;
|
||
|
|
|
||
|
|
/* If no errors have been detected then increment the count of test
|
||
|
|
cycles. */
|
||
|
|
if( xISRTestError == pdFALSE )
|
||
|
|
{
|
||
|
|
ulISRCycles++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Nothing else to do. */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------*/
|
||
|
|
/* This is called to check that all the created tasks are still running. */
|
||
|
|
BaseType_t xAreEventGroupTasksStillRunning( void )
|
||
|
|
{
|
||
|
|
static uint32_t ulPreviousWaitBitCycles = 0, ulPreviousSetBitCycles = 0, ulPreviousISRCycles = 0;
|
||
|
|
BaseType_t xStatus = pdPASS;
|
||
|
|
|
||
|
|
/* Check the tasks are still cycling without finding any errors. */
|
||
|
|
if( ulPreviousSetBitCycles == ulTestMasterCycles )
|
||
|
|
{
|
||
|
|
xStatus = pdFAIL;
|
||
|
|
}
|
||
|
|
ulPreviousSetBitCycles = ulTestMasterCycles;
|
||
|
|
|
||
|
|
if( ulPreviousWaitBitCycles == ulTestSlaveCycles )
|
||
|
|
{
|
||
|
|
xStatus = pdFAIL;
|
||
|
|
}
|
||
|
|
ulPreviousWaitBitCycles = ulTestSlaveCycles;
|
||
|
|
|
||
|
|
if( ulPreviousISRCycles == ulISRCycles )
|
||
|
|
{
|
||
|
|
xStatus = pdFAIL;
|
||
|
|
}
|
||
|
|
ulPreviousISRCycles = ulISRCycles;
|
||
|
|
|
||
|
|
return xStatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|