2 FreeRTOS V8.0.0:rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
\r
5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
\r
7 ***************************************************************************
\r
9 * FreeRTOS provides completely free yet professionally developed, *
\r
10 * robust, strictly quality controlled, supported, and cross *
\r
11 * platform software that has become a de facto standard. *
\r
13 * Help yourself get started quickly and support the FreeRTOS *
\r
14 * project by purchasing a FreeRTOS tutorial book, reference *
\r
15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
\r
19 ***************************************************************************
\r
21 This file is part of the FreeRTOS distribution.
\r
23 FreeRTOS is free software; you can redistribute it and/or modify it under
\r
24 the terms of the GNU General Public License (version 2) as published by the
\r
25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
\r
27 >>! NOTE: The modification to the GPL is included to allow you to distribute
\r
28 >>! a combined work that includes FreeRTOS without being obliged to provide
\r
29 >>! the source code for proprietary components outside of the FreeRTOS
\r
32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
\r
33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
\r
34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
\r
35 link: http://www.freertos.org/a00114.html
\r
39 ***************************************************************************
\r
41 * Having a problem? Start by reading the FAQ "My application does *
\r
42 * not run, what could be wrong?" *
\r
44 * http://www.FreeRTOS.org/FAQHelp.html *
\r
46 ***************************************************************************
\r
48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
\r
49 license and Real Time Engineers Ltd. contact details.
\r
51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
\r
52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
\r
53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
\r
55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
\r
56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
\r
57 licenses offer ticketed support, indemnification and middleware.
\r
59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
\r
60 engineered and independently SIL3 certified version for use in safety and
\r
61 mission critical applications that require provable dependability.
\r
69 * This file contains fairly comprehensive checks on the behaviour of event
\r
70 * groups. It is not intended to be a user friendly demonstration of the
\r
73 * NOTE: The tests implemented in this file are informal 'sanity' tests
\r
74 * only and are not part of the module tests that make use of the
\r
75 * mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
\r
79 /* Scheduler include files. */
\r
80 #include "FreeRTOS.h"
\r
82 #include "event_groups.h"
\r
84 /* Demo app includes. */
\r
85 #include "EventGroupsDemo.h"
\r
87 /* Priorities used by the tasks. */
\r
88 #define ebSET_BIT_TASK_PRIORITY ( tskIDLE_PRIORITY )
\r
89 #define ebWAIT_BIT_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
\r
91 /* Generic bit definitions. */
\r
92 #define ebBIT_0 ( 0x01UL )
\r
93 #define ebBIT_1 ( 0x02UL )
\r
94 #define ebBIT_2 ( 0x04UL )
\r
95 #define ebBIT_3 ( 0x08UL )
\r
96 #define ebBIT_4 ( 0x10UL )
\r
97 #define ebBIT_5 ( 0x20UL )
\r
98 #define ebBIT_6 ( 0x40UL )
\r
99 #define ebBIT_7 ( 0x80UL )
\r
101 /* Combinations of bits used in the demo. */
\r
102 #define ebCOMBINED_BITS ( ebBIT_1 | ebBIT_5 | ebBIT_7 )
\r
103 #define ebALL_BITS ( ebBIT_0 | ebBIT_1 | ebBIT_2 | ebBIT_3 | ebBIT_4 | ebBIT_5 | ebBIT_6 | ebBIT_7 )
\r
105 /* Associate a bit to each task. These bits are used to identify all the tasks
\r
106 that synchronise with the xEventGroupSync() function. */
\r
107 #define ebSET_BIT_TASK_SYNC_BIT ebBIT_0
\r
108 #define ebWAIT_BIT_TASK_SYNC_BIT ebBIT_1
\r
109 #define ebRENDESVOUS_TASK_1_SYNC_BIT ebBIT_2
\r
110 #define ebRENDESVOUS_TASK_2_SYNC_BIT ebBIT_3
\r
111 #define ebALL_SYNC_BITS ( ebSET_BIT_TASK_SYNC_BIT | ebWAIT_BIT_TASK_SYNC_BIT | ebRENDESVOUS_TASK_1_SYNC_BIT | ebRENDESVOUS_TASK_2_SYNC_BIT )
\r
113 /* A block time of zero simply means "don't block". */
\r
114 #define ebDONT_BLOCK ( 0 )
\r
117 #define ebSHORT_DELAY ( 5 / portTICK_PERIOD_MS )
\r
119 /* Used in the selective bits test which checks no, one or both tasks blocked on
\r
120 event bits in a group are unblocked as appropriate as different bits get set. */
\r
121 #define ebSELECTIVE_BITS_1 0x03
\r
122 #define ebSELECTIVE_BITS_2 0x05
\r
124 /*-----------------------------------------------------------*/
\r
127 * NOTE: The tests implemented in this function are informal 'sanity' tests
\r
128 * only and are not part of the module tests that make use of the
\r
129 * mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
\r
131 * The master test task. This task:
\r
133 * 1) Calls prvSelectiveBitsTestMasterFunction() to test the behaviour when two
\r
134 * tasks are blocked on different bits in an event group. The counterpart of
\r
135 * this test is implemented by the prvSelectiveBitsTestSlaveFunction()
\r
136 * function (which is called by the two tasks that block on the event group).
\r
138 * 2) Calls prvBitCombinationTestMasterFunction() to test the behaviour when
\r
139 * just one task is blocked on various combinations of bits within an event
\r
140 * group. The counterpart of this test is implemented within the 'test
\r
143 * 3) Calls prvPerformTaskSyncTests() to test task synchronisation behaviour.
\r
145 static void prvTestMasterTask( void *pvParameters );
\r
148 * A helper task that enables the 'test master' task to perform several
\r
149 * behavioural tests. See the comments above the prvTestMasterTask() prototype
\r
152 static void prvTestSlaveTask( void *pvParameters );
\r
155 * The part of the test that is performed between the 'test master' task and the
\r
156 * 'test slave' task to test the behaviour when the slave blocks on various
\r
157 * event bit combinations.
\r
159 static BaseType_t prvBitCombinationTestMasterFunction( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle );
\r
162 * The part of the test that uses all the tasks to test the task synchronisation
\r
165 static BaseType_t prvPerformTaskSyncTests( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle );
\r
168 * Two instances of prvSyncTask() are created. They start by calling
\r
169 * prvSelectiveBitsTestSlaveFunction() to act as slaves when the test master is
\r
170 * executing the prvSelectiveBitsTestMasterFunction() function. They then loop
\r
171 * to test the task synchronisation (rendezvous) behaviour.
\r
173 static void prvSyncTask( void *pvParameters );
\r
176 * Functions used in a test that blocks two tasks on various different bits
\r
177 * within an event group - then sets each bit in turn and checks that the
\r
178 * correct tasks unblock at the correct times.
\r
180 static BaseType_t prvSelectiveBitsTestMasterFunction( void );
\r
181 static void prvSelectiveBitsTestSlaveFunction( void );
\r
183 /*-----------------------------------------------------------*/
\r
185 /* Variables that are incremented by the tasks on each cycle provided no errors
\r
186 have been found. Used to detect an error or stall in the test cycling. */
\r
187 static volatile unsigned long ulTestMasterCycles = 0, ulTestSlaveCycles = 0, ulISRCycles = 0;
\r
189 /* The event group used by all the task based tests. */
\r
190 static EventGroupHandle_t xEventGroup = NULL;
\r
192 /* The event group used by the interrupt based tests. */
\r
193 static EventGroupHandle_t xISREventGroup = NULL;
\r
195 /* Handles to the tasks that only take part in the synchronisation calls. */
\r
196 static TaskHandle_t xSyncTask1 = NULL, xSyncTask2 = NULL;
\r
198 /*-----------------------------------------------------------*/
\r
200 void vStartEventGroupTasks( void )
\r
202 TaskHandle_t xTestSlaveTaskHandle;
\r
205 * This file contains fairly comprehensive checks on the behaviour of event
\r
206 * groups. It is not intended to be a user friendly demonstration of the
\r
207 * event groups API.
\r
209 * NOTE: The tests implemented in this file are informal 'sanity' tests
\r
210 * only and are not part of the module tests that make use of the
\r
211 * mtCOVERAGE_TEST_MARKER macro within the event groups implementation.
\r
213 * Create the test tasks as described at the top of this file.
\r
215 xTaskCreate( prvTestSlaveTask, "WaitO", configMINIMAL_STACK_SIZE, NULL, ebWAIT_BIT_TASK_PRIORITY, &xTestSlaveTaskHandle );
\r
216 xTaskCreate( prvTestMasterTask, "SetB", configMINIMAL_STACK_SIZE, ( void * ) xTestSlaveTaskHandle, ebSET_BIT_TASK_PRIORITY, NULL );
\r
217 xTaskCreate( prvSyncTask, "Rndv", configMINIMAL_STACK_SIZE, ( void * ) ebRENDESVOUS_TASK_1_SYNC_BIT, ebWAIT_BIT_TASK_PRIORITY, &xSyncTask1 );
\r
218 xTaskCreate( prvSyncTask, "Rndv", configMINIMAL_STACK_SIZE, ( void * ) ebRENDESVOUS_TASK_2_SYNC_BIT, ebWAIT_BIT_TASK_PRIORITY, &xSyncTask2 );
\r
220 /* If the last task was created then the others will have been too. */
\r
221 configASSERT( xSyncTask2 );
\r
223 /* Create the event group used by the ISR tests. The event group used by
\r
224 the tasks is created by the tasks themselves. */
\r
225 xISREventGroup = xEventGroupCreate();
\r
226 configASSERT( xISREventGroup );
\r
228 /*-----------------------------------------------------------*/
\r
230 static void prvTestMasterTask( void *pvParameters )
\r
234 /* The handle to the slave task is passed in as the task parameter. */
\r
235 TaskHandle_t xTestSlaveTaskHandle = ( TaskHandle_t ) pvParameters;
\r
237 /* Avoid compiler warnings. */
\r
238 ( void ) pvParameters;
\r
240 /* Create the event group used by the tasks ready for the initial tests. */
\r
241 xEventGroup = xEventGroupCreate();
\r
242 configASSERT( xEventGroup );
\r
244 /* Perform the tests that block two tasks on different combinations of bits,
\r
245 then set each bit in turn and check the correct tasks unblock at the correct
\r
247 xError = prvSelectiveBitsTestMasterFunction();
\r
251 /* Recreate the event group ready for the next cycle. */
\r
252 xEventGroup = xEventGroupCreate();
\r
253 configASSERT( xEventGroup );
\r
255 /* Perform the tests that check the behaviour when a single task is
\r
256 blocked on various combinations of event bits. */
\r
257 xError = prvBitCombinationTestMasterFunction( xError, xTestSlaveTaskHandle );
\r
259 /* Perform the task synchronisation tests. */
\r
260 xError = prvPerformTaskSyncTests( xError, xTestSlaveTaskHandle );
\r
262 /* Delete the event group. */
\r
263 vEventGroupDelete( xEventGroup );
\r
265 /* Now all the other tasks should have completed and suspended
\r
266 themselves ready for the next go around the loop. */
\r
267 if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
\r
272 if( eTaskGetState( xSyncTask1 ) != eSuspended )
\r
277 if( eTaskGetState( xSyncTask2 ) != eSuspended )
\r
282 /* Only increment the cycle variable if no errors have been detected. */
\r
283 if( xError == pdFALSE )
\r
285 ulTestMasterCycles++;
\r
288 configASSERT( xError == pdFALSE );
\r
291 /*-----------------------------------------------------------*/
\r
293 static void prvSyncTask( void *pvParameters )
\r
295 EventBits_t uxSynchronisationBit, uxReturned;
\r
297 /* A few tests that check the behaviour when two tasks are blocked on
\r
298 various different bits within an event group are performed before this task
\r
299 enters its infinite loop to carry out its main demo function. */
\r
300 prvSelectiveBitsTestSlaveFunction();
\r
302 /* The bit to use to indicate this task is at the synchronisation point is
\r
303 passed in as the task parameter. */
\r
304 uxSynchronisationBit = ( EventBits_t ) pvParameters;
\r
308 /* Now this task takes part in a task synchronisation - sometimes known
\r
309 as a 'rendezvous'. Its execution pattern is controlled by the 'test
\r
310 master' task, which is responsible for taking this task out of the
\r
311 Suspended state when it is time to test the synchronisation behaviour.
\r
312 See: http://www.freertos.org/xEventGroupSync.html. */
\r
313 vTaskSuspend( NULL );
\r
315 /* Set the bit that indicates this task is at the synchronisation
\r
316 point. The first time this is done the 'test master' task has a lower
\r
317 priority than this task so this task will get to the sync point before
\r
318 the set bits task. */
\r
319 uxReturned = xEventGroupSync( xEventGroup, /* The event group used for the synchronisation. */
\r
320 uxSynchronisationBit, /* The bit to set in the event group to indicate this task is at the sync point. */
\r
321 ebALL_SYNC_BITS,/* The bits to wait for - these bits are set by the other tasks taking part in the sync. */
\r
322 portMAX_DELAY );/* The maximum time to wait for the sync condition to be met before giving up. */
\r
324 /* A max delay was used, so this task should only exit the above
\r
325 function call when the sync condition is met. Check this is the
\r
327 configASSERT( ( uxReturned & ebALL_SYNC_BITS ) == ebALL_SYNC_BITS );
\r
329 /* Remove compiler warning if configASSERT() is not defined. */
\r
330 ( void ) uxReturned;
\r
332 /* Wait until the 'test master' task unsuspends this task again. */
\r
333 vTaskSuspend( NULL );
\r
335 /* Set the bit that indicates this task is at the synchronisation
\r
336 point again. This time the 'test master' task has a higher priority
\r
337 than this task so will get to the sync point before this task. */
\r
338 uxReturned = xEventGroupSync( xEventGroup, uxSynchronisationBit, ebALL_SYNC_BITS, portMAX_DELAY );
\r
340 /* Again a max delay was used, so this task should only exit the above
\r
341 function call when the sync condition is met. Check this is the
\r
343 configASSERT( ( uxReturned & ebALL_SYNC_BITS ) == ebALL_SYNC_BITS );
\r
345 /* Block on the event group again. This time the event group is going
\r
346 to be deleted while this task is blocked on it so it is expected that 0
\r
348 uxReturned = xEventGroupWaitBits( xEventGroup, ebALL_SYNC_BITS, pdFALSE, pdTRUE, portMAX_DELAY );
\r
349 configASSERT( uxReturned == 0 );
\r
352 /*-----------------------------------------------------------*/
\r
354 static void prvTestSlaveTask( void *pvParameters )
\r
356 EventBits_t uxReturned;
\r
357 BaseType_t xError = pdFALSE;
\r
359 /* Avoid compiler warnings. */
\r
360 ( void ) pvParameters;
\r
364 /**********************************************************************
\r
365 * Part 1: This section is the counterpart to the
\r
366 * prvBitCombinationTestMasterFunction() function which is called by the
\r
367 * test master task.
\r
368 ***********************************************************************
\r
370 This task is controller by the 'test master' task (which is
\r
371 implemented by prvTestMasterTask()). Suspend until resumed by the
\r
372 'test master' task. */
\r
373 vTaskSuspend( NULL );
\r
375 /* Wait indefinitely for one of the bits in ebCOMBINED_BITS to get
\r
376 set. Clear the bit on exit. */
\r
377 uxReturned = xEventGroupWaitBits( xEventGroup, /* The event group that contains the event bits being queried. */
\r
378 ebBIT_1, /* The bit to wait for. */
\r
379 pdTRUE, /* Clear the bit on exit. */
\r
380 pdTRUE, /* Wait for all the bits (only one in this case anyway). */
\r
381 portMAX_DELAY ); /* Block indefinitely to wait for the condition to be met. */
\r
383 /* The 'test master' task set all the bits defined by ebCOMBINED_BITS,
\r
384 only one of which was being waited for by this task. The return value
\r
385 shows the state of the event bits when the task was unblocked, however
\r
386 because the task was waiting for ebBIT_1 and 'clear on exit' was set to
\r
387 the current state of the event bits will have ebBIT_1 clear. */
\r
388 if( uxReturned != ebCOMBINED_BITS )
\r
393 /* Now call xEventGroupWaitBits() again, this time waiting for all the
\r
394 bits in ebCOMBINED_BITS to be set. This call should block until the
\r
395 'test master' task sets ebBIT_1 - which was the bit cleared in the call
\r
396 to xEventGroupWaitBits() above. */
\r
397 uxReturned = xEventGroupWaitBits( xEventGroup,
\r
398 ebCOMBINED_BITS, /* The bits being waited on. */
\r
399 pdFALSE, /* Don't clear the bits on exit. */
\r
400 pdTRUE, /* All the bits must be set to unblock. */
\r
403 /* Were all the bits set? */
\r
404 if( ( uxReturned & ebCOMBINED_BITS ) != ebCOMBINED_BITS )
\r
409 /* Suspend again to wait for the 'test master' task. */
\r
410 vTaskSuspend( NULL );
\r
412 /* Now call xEventGroupWaitBits() again, again waiting for all the bits
\r
413 in ebCOMBINED_BITS to be set, but this time clearing the bits when the
\r
414 task is unblocked. */
\r
415 uxReturned = xEventGroupWaitBits( xEventGroup,
\r
416 ebCOMBINED_BITS, /* The bits being waited on. */
\r
417 pdTRUE, /* Clear the bits on exit. */
\r
418 pdTRUE, /* All the bits must be set to unblock. */
\r
421 /* The 'test master' task set all the bits in the event group, so that
\r
422 is the value that should have been returned. The bits defined by
\r
423 ebCOMBINED_BITS will have been clear again in the current value though
\r
424 as 'clear on exit' was set to pdTRUE. */
\r
425 if( uxReturned != ebALL_BITS )
\r
434 /**********************************************************************
\r
435 * Part 2: This section is the counterpart to the
\r
436 * prvPerformTaskSyncTests() function which is called by the
\r
437 * test master task.
\r
438 ***********************************************************************
\r
441 Once again wait for the 'test master' task to unsuspend this task
\r
442 when it is time for the next test. */
\r
443 vTaskSuspend( NULL );
\r
445 /* Now peform a synchronisation with all the other tasks. At this point
\r
446 the 'test master' task has the lowest priority so will get to the sync
\r
447 point after all the other synchronising tasks. */
\r
448 uxReturned = xEventGroupSync( xEventGroup, /* The event group used for the sync. */
\r
449 ebWAIT_BIT_TASK_SYNC_BIT, /* The bit in the event group used to indicate this task is at the sync point. */
\r
450 ebALL_SYNC_BITS, /* The bits to wait for. These bits are set by the other tasks taking part in the sync. */
\r
451 portMAX_DELAY ); /* The maximum time to wait for the sync condition to be met before giving up. */
\r
453 /* A sync with a max delay should only exit when all the synchronisation
\r
455 if( ( uxReturned & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
\r
460 /* ...but now the synchronisation bits should be clear again. Read back
\r
461 the current value of the bits within the event group to check that is
\r
462 the case. Setting the bits to zero will return the bits previous value
\r
463 then leave all the bits clear. */
\r
464 if( xEventGroupSetBits( xEventGroup, 0x00 ) != 0 )
\r
469 /* Check the bits are indeed 0 now by simply reading then. */
\r
470 if( xEventGroupGetBits( xEventGroup ) != 0 )
\r
475 if( xError == pdFALSE )
\r
477 /* This task is still cycling without finding an error. */
\r
478 ulTestSlaveCycles++;
\r
481 vTaskSuspend( NULL );
\r
483 /* This time sync when the 'test master' task has the highest priority
\r
484 at the point where it sets its sync bit - so this time the 'test master'
\r
485 task will get to the sync point before this task. */
\r
486 uxReturned = xEventGroupSync( xEventGroup, ebWAIT_BIT_TASK_SYNC_BIT, ebALL_SYNC_BITS, portMAX_DELAY );
\r
488 /* A sync with a max delay should only exit when all the synchronisation
\r
490 if( ( uxReturned & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
\r
495 /* ...but now the sync bits should be clear again. */
\r
496 if( xEventGroupSetBits( xEventGroup, 0x00 ) != 0 )
\r
501 /* Block on the event group again. This time the event group is going
\r
502 to be deleted while this task is blocked on it, so it is expected that 0
\r
503 will be returned. */
\r
504 uxReturned = xEventGroupWaitBits( xEventGroup, ebALL_SYNC_BITS, pdFALSE, pdTRUE, portMAX_DELAY );
\r
506 if( uxReturned != 0 )
\r
511 if( xError == pdFALSE )
\r
513 /* This task is still cycling without finding an error. */
\r
514 ulTestSlaveCycles++;
\r
517 configASSERT( xError == pdFALSE );
\r
520 /*-----------------------------------------------------------*/
\r
522 static BaseType_t prvPerformTaskSyncTests( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle )
\r
524 EventBits_t uxBits;
\r
526 /* The three tasks that take part in the synchronisation (rendezvous) are
\r
527 expected to be in the suspended state at the start of the test. */
\r
528 if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
\r
533 if( eTaskGetState( xSyncTask1 ) != eSuspended )
\r
538 if( eTaskGetState( xSyncTask2 ) != eSuspended )
\r
543 /* Unsuspend the other tasks then check they have executed up to the
\r
544 synchronisation point. */
\r
545 vTaskResume( xTestSlaveTaskHandle );
\r
546 vTaskResume( xSyncTask1 );
\r
547 vTaskResume( xSyncTask2 );
\r
549 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
554 if( eTaskGetState( xSyncTask1 ) != eBlocked )
\r
559 if( eTaskGetState( xSyncTask2 ) != eBlocked )
\r
564 /* Set this task's sync bit. */
\r
565 uxBits = xEventGroupSync( xEventGroup, /* The event group used for the synchronisation. */
\r
566 ebSET_BIT_TASK_SYNC_BIT,/* The bit set by this task when it reaches the sync point. */
\r
567 ebALL_SYNC_BITS, /* The bits to wait for - these bits are set by the other tasks that take part in the sync. */
\r
568 portMAX_DELAY ); /* The maximum time to wait for the sync condition to be met. */
\r
570 /* A sync with a max delay should only exit when all the synchronise
\r
571 bits are set...check that is the case. */
\r
572 if( ( uxBits & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
\r
577 /* ...but now the sync bits should be clear again. */
\r
578 if( xEventGroupGetBits( xEventGroup ) != 0 )
\r
584 /* The other tasks should now all be suspended again, ready for the next
\r
585 synchronisation. */
\r
586 if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
\r
591 if( eTaskGetState( xSyncTask1 ) != eSuspended )
\r
596 if( eTaskGetState( xSyncTask2 ) != eSuspended )
\r
602 /* Sync again - but this time set the last necessary bit as the
\r
603 highest priority task, rather than the lowest priority task. Unsuspend
\r
604 the other tasks then check they have executed up to the synchronisation
\r
606 vTaskResume( xTestSlaveTaskHandle );
\r
607 vTaskResume( xSyncTask1 );
\r
608 vTaskResume( xSyncTask2 );
\r
610 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
615 if( eTaskGetState( xSyncTask1 ) != eBlocked )
\r
620 if( eTaskGetState( xSyncTask2 ) != eBlocked )
\r
625 /* Raise the priority of this task above that of the other tasks. */
\r
626 vTaskPrioritySet( NULL, ebWAIT_BIT_TASK_PRIORITY + 1 );
\r
628 /* Set this task's sync bit. */
\r
629 uxBits = xEventGroupSync( xEventGroup, ebSET_BIT_TASK_SYNC_BIT, ebALL_SYNC_BITS, portMAX_DELAY );
\r
631 /* A sync with a max delay should only exit when all the synchronisation
\r
633 if( ( uxBits & ebALL_SYNC_BITS ) != ebALL_SYNC_BITS )
\r
638 /* ...but now the sync bits should be clear again. */
\r
639 if( xEventGroupGetBits( xEventGroup ) != 0 )
\r
645 /* The other tasks should now all be in the ready state again, but not
\r
646 executed yet as this task still has a higher relative priority. */
\r
647 if( eTaskGetState( xTestSlaveTaskHandle ) != eReady )
\r
652 if( eTaskGetState( xSyncTask1 ) != eReady )
\r
657 if( eTaskGetState( xSyncTask2 ) != eReady )
\r
663 /* Reset the priority of this task back to its original value. */
\r
664 vTaskPrioritySet( NULL, ebSET_BIT_TASK_PRIORITY );
\r
666 /* Now all the other tasks should have reblocked on the event bits
\r
667 to test the behaviour when the event bits are deleted. */
\r
668 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
673 if( eTaskGetState( xSyncTask1 ) != eBlocked )
\r
678 if( eTaskGetState( xSyncTask2 ) != eBlocked )
\r
685 /*-----------------------------------------------------------*/
\r
687 static BaseType_t prvBitCombinationTestMasterFunction( BaseType_t xError, TaskHandle_t xTestSlaveTaskHandle )
\r
689 EventBits_t uxBits;
\r
691 /* Resume the other task. It will block, pending a single bit from
\r
692 within ebCOMBINED_BITS. */
\r
693 vTaskResume( xTestSlaveTaskHandle );
\r
695 /* Ensure the other task is blocked on the task. */
\r
696 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
701 /* Set all the bits in ebCOMBINED_BITS - the 'test slave' task is only
\r
702 blocked waiting for one of them. */
\r
703 xEventGroupSetBits( xEventGroup, ebCOMBINED_BITS );
\r
705 /* The 'test slave' task should now have executed, clearing ebBIT_1 (the
\r
706 bit it was blocked on), then re-entered the Blocked state to wait for
\r
707 all the other bits in ebCOMBINED_BITS to be set again. First check
\r
708 ebBIT_1 is clear. */
\r
709 uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
\r
711 if( uxBits != ( ebCOMBINED_BITS & ~ebBIT_1 ) )
\r
716 /* Ensure the other task is still in the blocked state. */
\r
717 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
722 /* Set all the bits other than ebBIT_1 - which is the bit that must be
\r
723 set before the other task unblocks. */
\r
724 xEventGroupSetBits( xEventGroup, ebALL_BITS & ~ebBIT_1 );
\r
726 /* Ensure all the expected bits are still set. */
\r
727 uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
\r
729 if( uxBits != ( ebALL_BITS & ~ebBIT_1 ) )
\r
734 /* Ensure the other task is still in the blocked state. */
\r
735 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
740 /* Now also set ebBIT_1, which should unblock the other task, which will
\r
741 then suspend itself. */
\r
742 xEventGroupSetBits( xEventGroup, ebBIT_1 );
\r
744 /* Ensure the other task is suspended. */
\r
745 if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
\r
750 /* The other task should not have cleared the bits - so all the bits
\r
751 should still be set. */
\r
752 if( xEventGroupSetBits( xEventGroup, 0x00 ) != ebALL_BITS )
\r
757 /* Clear ebBIT_1 again. */
\r
758 if( xEventGroupClearBits( xEventGroup, ebBIT_1 ) != ebALL_BITS )
\r
763 /* Resume the other task - which will wait on all the ebCOMBINED_BITS
\r
764 again - this time clearing the bits when it is unblocked. */
\r
765 vTaskResume( xTestSlaveTaskHandle );
\r
767 /* Ensure the other task is blocked once again. */
\r
768 if( eTaskGetState( xTestSlaveTaskHandle ) != eBlocked )
\r
773 /* Set the bit the other task is waiting for. */
\r
774 xEventGroupSetBits( xEventGroup, ebBIT_1 );
\r
776 /* Ensure the other task is suspended once again. */
\r
777 if( eTaskGetState( xTestSlaveTaskHandle ) != eSuspended )
\r
782 /* The other task should have cleared the bits in ebCOMBINED_BITS.
\r
783 Clear the remaining bits. */
\r
784 uxBits = xEventGroupWaitBits( xEventGroup, ebALL_BITS, pdFALSE, pdFALSE, ebDONT_BLOCK );
\r
786 if( uxBits != ( ebALL_BITS & ~ebCOMBINED_BITS ) )
\r
791 /* Clear all bits ready for the sync with the other three tasks. The
\r
792 value returned is the value prior to the bits being cleared. */
\r
793 if( xEventGroupClearBits( xEventGroup, ebALL_BITS ) != ( ebALL_BITS & ~ebCOMBINED_BITS ) )
\r
798 /* The bits should be clear now. */
\r
799 if( xEventGroupGetBits( xEventGroup ) != 0x00 )
\r
806 /*-----------------------------------------------------------*/
\r
808 static void prvSelectiveBitsTestSlaveFunction( void )
\r
810 EventBits_t uxPendBits, uxReturned;
\r
812 /* Used in a test that blocks two tasks on various different bits within an
\r
813 event group - then sets each bit in turn and checks that the correct tasks
\r
814 unblock at the correct times.
\r
816 This function is called by two different tasks - each of which will use a
\r
817 different bit. Check the task handle to see which task the function was
\r
819 if( xTaskGetCurrentTaskHandle() == xSyncTask1 )
\r
821 uxPendBits = ebSELECTIVE_BITS_1;
\r
825 uxPendBits = ebSELECTIVE_BITS_2;
\r
830 /* Wait until it is time to perform the next cycle of the test. The
\r
831 task is unsuspended by the tests implemented in the
\r
832 prvSelectiveBitsTestMasterFunction() function. */
\r
833 vTaskSuspend( NULL );
\r
834 uxReturned = xEventGroupWaitBits( xEventGroup, uxPendBits, pdTRUE, pdFALSE, portMAX_DELAY );
\r
836 if( uxReturned == ( EventBits_t ) 0 )
\r
842 /*-----------------------------------------------------------*/
\r
844 static BaseType_t prvSelectiveBitsTestMasterFunction( void )
\r
846 BaseType_t xError = pdFALSE;
\r
849 /* Used in a test that blocks two tasks on various different bits within an
\r
850 event group - then sets each bit in turn and checks that the correct tasks
\r
851 unblock at the correct times. The two other tasks (xSyncTask1 and
\r
852 xSyncTask2) call prvSelectiveBitsTestSlaveFunction() to perform their parts in
\r
855 Both other tasks should start in the suspended state. */
\r
856 if( eTaskGetState( xSyncTask1 ) != eSuspended )
\r
861 if( eTaskGetState( xSyncTask2 ) != eSuspended )
\r
866 /* Test each bit in the byte individually. */
\r
867 for( uxBit = 0x01; uxBit < 0x100; uxBit <<= 1 )
\r
869 /* Resume both tasks. */
\r
870 vTaskResume( xSyncTask1 );
\r
871 vTaskResume( xSyncTask2 );
\r
873 /* Now both tasks should be blocked on the event group. */
\r
874 if( eTaskGetState( xSyncTask1 ) != eBlocked )
\r
879 if( eTaskGetState( xSyncTask2 ) != eBlocked )
\r
885 xEventGroupSetBits( xEventGroup, uxBit );
\r
887 /* Is the bit set in the first set of selective bits? If so the first
\r
888 sync task should have unblocked and returned to the suspended state. */
\r
889 if( ( uxBit & ebSELECTIVE_BITS_1 ) == 0 )
\r
891 /* Task should not have unblocked. */
\r
892 if( eTaskGetState( xSyncTask1 ) != eBlocked )
\r
899 /* Task should have unblocked and returned to the suspended state. */
\r
900 if( eTaskGetState( xSyncTask1 ) != eSuspended )
\r
906 /* Same checks for the second sync task. */
\r
907 if( ( uxBit & ebSELECTIVE_BITS_2 ) == 0 )
\r
909 /* Task should not have unblocked. */
\r
910 if( eTaskGetState( xSyncTask2 ) != eBlocked )
\r
917 /* Task should have unblocked and returned to the suspended state. */
\r
918 if( eTaskGetState( xSyncTask2 ) != eSuspended )
\r
925 /* Ensure both tasks are blocked on the event group again, then delete the
\r
926 event group so the other tasks leave this portion of the test. */
\r
927 vTaskResume( xSyncTask1 );
\r
928 vTaskResume( xSyncTask2 );
\r
930 /* Deleting the event group is the signal that the two other tasks should
\r
931 leave the prvSelectiveBitsTestSlaveFunction() function and continue to the main
\r
932 part of their functionality. */
\r
933 vEventGroupDelete( xEventGroup );
\r
937 /*-----------------------------------------------------------*/
\r
939 void vPeriodicEventGroupsProcessing( void )
\r
941 static BaseType_t xCallCount = 0, xISRTestError = pdFALSE;
\r
942 const BaseType_t xSetBitCount = 100, xGetBitsCount = 200, xClearBitsCount = 300;
\r
943 const EventBits_t uxBitsToSet = 0x12U;
\r
944 EventBits_t uxReturned;
\r
945 BaseType_t xMessagePosted;
\r
947 /* Called periodically from the tick hook to exercise the "FromISR"
\r
952 if( xCallCount == xSetBitCount )
\r
954 /* All the event bits should start clear. */
\r
955 uxReturned = xEventGroupGetBitsFromISR( xISREventGroup );
\r
956 if( uxReturned != 0x00 )
\r
958 xISRTestError = pdTRUE;
\r
962 /* Set the bits. This is called from the tick hook so it is not
\r
963 necessary to use the last parameter to ensure a context switch
\r
964 occurs immediately. */
\r
965 xMessagePosted = xEventGroupSetBitsFromISR( xISREventGroup, uxBitsToSet, NULL );
\r
966 if( xMessagePosted != pdPASS )
\r
968 xISRTestError = pdTRUE;
\r
972 else if( xCallCount == xGetBitsCount )
\r
974 /* Check the bits were set as expected. */
\r
975 uxReturned = xEventGroupGetBitsFromISR( xISREventGroup );
\r
976 if( uxReturned != uxBitsToSet )
\r
978 xISRTestError = pdTRUE;
\r
981 else if( xCallCount == xClearBitsCount )
\r
983 /* Clear the bits again. */
\r
984 uxReturned = xEventGroupClearBitsFromISR( xISREventGroup, uxBitsToSet );
\r
986 /* The returned value should be the value before the bits were cleaed.*/
\r
987 if( uxReturned != uxBitsToSet )
\r
989 xISRTestError = pdTRUE;
\r
992 /* Go back to the start. */
\r
995 /* If no errors have been detected then increment the count of test
\r
997 if( xISRTestError == pdFALSE )
\r
1004 /* Nothing else to do. */
\r
1008 /*-----------------------------------------------------------*/
\r
1009 /* This is called to check that all the created tasks are still running. */
\r
1010 BaseType_t xAreEventGroupTasksStillRunning( void )
\r
1012 static unsigned long ulPreviousWaitBitCycles = 0, ulPreviousSetBitCycles = 0, ulPreviousISRCycles = 0;
\r
1013 BaseType_t xStatus = pdPASS;
\r
1015 /* Check the tasks are still cycling without finding any errors. */
\r
1016 if( ulPreviousSetBitCycles == ulTestMasterCycles )
\r
1020 ulPreviousSetBitCycles = ulTestMasterCycles;
\r
1022 if( ulPreviousWaitBitCycles == ulTestSlaveCycles )
\r
1026 ulPreviousWaitBitCycles = ulTestSlaveCycles;
\r
1028 if( ulPreviousISRCycles == ulISRCycles )
\r
1032 ulPreviousISRCycles = ulISRCycles;
\r