/* FreeRTOS V9.0.1 - Copyright (C) 2017 Real Time Engineers Ltd. All rights reserved VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. This file is part of the FreeRTOS distribution. FreeRTOS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception. *************************************************************************** >>! NOTE: The modification to the GPL is included to allow you to !<< >>! distribute a combined work that includes FreeRTOS without being !<< >>! obliged to provide the source code for proprietary components !<< >>! outside of the FreeRTOS kernel. !<< *************************************************************************** FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Full license text is available on the following link: http://www.freertos.org/a00114.html *************************************************************************** * * * FreeRTOS provides completely free yet professionally developed, * * robust, strictly quality controlled, supported, and cross * * platform software that is more than just the market leader, it * * is the industry's de facto standard. * * * * Help yourself get started quickly while simultaneously helping * * to support the FreeRTOS project by purchasing a FreeRTOS * * tutorial book, reference manual, or both: * * http://www.FreeRTOS.org/Documentation * * * *************************************************************************** http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading the FAQ page "My application does not run, what could be wrong?". Have you defined configASSERT()? http://www.FreeRTOS.org/support - In return for receiving this top quality embedded software for free we request you assist our global community by participating in the support forum. http://www.FreeRTOS.org/training - Investing in training allows your team to be as productive as possible as early as possible. Now you can receive FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers Ltd, and the world's leading authority on the world's leading RTOS. http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, including FreeRTOS+Trace - an indispensable productivity tool, a DOS compatible FAT file system, and our tiny thread aware UDP/IP stack. http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS licenses offer ticketed support, indemnification and commercial middleware. http://www.SafeRTOS.com - High Integrity Systems also provide a safety engineered and independently SIL3 certified version for use in safety and mission critical applications that require provable dependability. 1 tab == 4 spaces! */ /* Standard includes. */ #include /* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining all the API functions to use the MPU wrappers. That should only be done when task.h is included from an application file. */ #define MPU_WRAPPERS_INCLUDED_FROM_API_FILE /* FreeRTOS includes. */ #include "FreeRTOS.h" #include "task.h" #include "timers.h" #include "event_groups.h" /* Lint e961 and e750 are suppressed as a MISRA exception justified because the MPU ports require MPU_WRAPPERS_INCLUDED_FROM_API_FILE to be defined for the header files above, but not in this file, in order to generate the correct privileged Vs unprivileged linkage and placement. */ #undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE /*lint !e961 !e750. */ /* The following bit fields convey control information in a task's event list item value. It is important they don't clash with the taskEVENT_LIST_ITEM_VALUE_IN_USE definition. */ #if configUSE_16_BIT_TICKS == 1 #define eventCLEAR_EVENTS_ON_EXIT_BIT 0x0100U #define eventUNBLOCKED_DUE_TO_BIT_SET 0x0200U #define eventWAIT_FOR_ALL_BITS 0x0400U #define eventEVENT_BITS_CONTROL_BYTES 0xff00U #else #define eventCLEAR_EVENTS_ON_EXIT_BIT 0x01000000UL #define eventUNBLOCKED_DUE_TO_BIT_SET 0x02000000UL #define eventWAIT_FOR_ALL_BITS 0x04000000UL #define eventEVENT_BITS_CONTROL_BYTES 0xff000000UL #endif typedef struct xEventGroupDefinition { EventBits_t uxEventBits; List_t xTasksWaitingForBits; /*< List of tasks waiting for a bit to be set. */ #if( configUSE_TRACE_FACILITY == 1 ) UBaseType_t uxEventGroupNumber; #endif #if( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) ) uint8_t ucStaticallyAllocated; /*< Set to pdTRUE if the event group is statically allocated to ensure no attempt is made to free the memory. */ #endif } EventGroup_t; /*-----------------------------------------------------------*/ /* * Test the bits set in uxCurrentEventBits to see if the wait condition is met. * The wait condition is defined by xWaitForAllBits. If xWaitForAllBits is * pdTRUE then the wait condition is met if all the bits set in uxBitsToWaitFor * are also set in uxCurrentEventBits. If xWaitForAllBits is pdFALSE then the * wait condition is met if any of the bits set in uxBitsToWait for are also set * in uxCurrentEventBits. */ static BaseType_t prvTestWaitCondition( const EventBits_t uxCurrentEventBits, const EventBits_t uxBitsToWaitFor, const BaseType_t xWaitForAllBits ) PRIVILEGED_FUNCTION; /*-----------------------------------------------------------*/ #if( configSUPPORT_STATIC_ALLOCATION == 1 ) EventGroupHandle_t xEventGroupCreateStatic( StaticEventGroup_t *pxEventGroupBuffer ) { EventGroup_t *pxEventBits; /* A StaticEventGroup_t object must be provided. */ configASSERT( pxEventGroupBuffer ); #if( configASSERT_DEFINED == 1 ) { /* Sanity check that the size of the structure used to declare a variable of type StaticEventGroup_t equals the size of the real event group structure. */ volatile size_t xSize = sizeof( StaticEventGroup_t ); configASSERT( xSize == sizeof( EventGroup_t ) ); } #endif /* configASSERT_DEFINED */ /* The user has provided a statically allocated event group - use it. */ pxEventBits = ( EventGroup_t * ) pxEventGroupBuffer; /*lint !e740 EventGroup_t and StaticEventGroup_t are guaranteed to have the same size and alignment requirement - checked by configASSERT(). */ if( pxEventBits != NULL ) { pxEventBits->uxEventBits = 0; vListInitialise( &( pxEventBits->xTasksWaitingForBits ) ); #if( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) { /* Both static and dynamic allocation can be used, so note that this event group was created statically in case the event group is later deleted. */ pxEventBits->ucStaticallyAllocated = pdTRUE; } #endif /* configSUPPORT_DYNAMIC_ALLOCATION */ traceEVENT_GROUP_CREATE( pxEventBits ); } else { traceEVENT_GROUP_CREATE_FAILED(); } return ( EventGroupHandle_t ) pxEventBits; } #endif /* configSUPPORT_STATIC_ALLOCATION */ /*-----------------------------------------------------------*/ #if( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) EventGroupHandle_t xEventGroupCreate( void ) { EventGroup_t *pxEventBits; /* Allocate the event group. */ pxEventBits = ( EventGroup_t * ) pvPortMalloc( sizeof( EventGroup_t ) ); if( pxEventBits != NULL ) { pxEventBits->uxEventBits = 0; vListInitialise( &( pxEventBits->xTasksWaitingForBits ) ); #if( configSUPPORT_STATIC_ALLOCATION == 1 ) { /* Both static and dynamic allocation can be used, so note this event group was allocated statically in case the event group is later deleted. */ pxEventBits->ucStaticallyAllocated = pdFALSE; } #endif /* configSUPPORT_STATIC_ALLOCATION */ traceEVENT_GROUP_CREATE( pxEventBits ); } else { traceEVENT_GROUP_CREATE_FAILED(); } return ( EventGroupHandle_t ) pxEventBits; } #endif /* configSUPPORT_DYNAMIC_ALLOCATION */ /*-----------------------------------------------------------*/ EventBits_t xEventGroupSync( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet, const EventBits_t uxBitsToWaitFor, TickType_t xTicksToWait ) { EventBits_t uxOriginalBitValue, uxReturn; EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; BaseType_t xAlreadyYielded; BaseType_t xTimeoutOccurred = pdFALSE; configASSERT( ( uxBitsToWaitFor & eventEVENT_BITS_CONTROL_BYTES ) == 0 ); configASSERT( uxBitsToWaitFor != 0 ); #if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) ) { configASSERT( !( ( xTaskGetSchedulerState() == taskSCHEDULER_SUSPENDED ) && ( xTicksToWait != 0 ) ) ); } #endif vTaskSuspendAll(); { uxOriginalBitValue = pxEventBits->uxEventBits; ( void ) xEventGroupSetBits( xEventGroup, uxBitsToSet ); if( ( ( uxOriginalBitValue | uxBitsToSet ) & uxBitsToWaitFor ) == uxBitsToWaitFor ) { /* All the rendezvous bits are now set - no need to block. */ uxReturn = ( uxOriginalBitValue | uxBitsToSet ); /* Rendezvous always clear the bits. They will have been cleared already unless this is the only task in the rendezvous. */ pxEventBits->uxEventBits &= ~uxBitsToWaitFor; xTicksToWait = 0; } else { if( xTicksToWait != ( TickType_t ) 0 ) { traceEVENT_GROUP_SYNC_BLOCK( xEventGroup, uxBitsToSet, uxBitsToWaitFor ); /* Store the bits that the calling task is waiting for in the task's event list item so the kernel knows when a match is found. Then enter the blocked state. */ vTaskPlaceOnUnorderedEventList( &( pxEventBits->xTasksWaitingForBits ), ( uxBitsToWaitFor | eventCLEAR_EVENTS_ON_EXIT_BIT | eventWAIT_FOR_ALL_BITS ), xTicksToWait ); /* This assignment is obsolete as uxReturn will get set after the task unblocks, but some compilers mistakenly generate a warning about uxReturn being returned without being set if the assignment is omitted. */ uxReturn = 0; } else { /* The rendezvous bits were not set, but no block time was specified - just return the current event bit value. */ uxReturn = pxEventBits->uxEventBits; } } } xAlreadyYielded = xTaskResumeAll(); if( xTicksToWait != ( TickType_t ) 0 ) { if( xAlreadyYielded == pdFALSE ) { portYIELD_WITHIN_API(); } else { mtCOVERAGE_TEST_MARKER(); } /* The task blocked to wait for its required bits to be set - at this point either the required bits were set or the block time expired. If the required bits were set they will have been stored in the task's event list item, and they should now be retrieved then cleared. */ uxReturn = uxTaskResetEventItemValue(); if( ( uxReturn & eventUNBLOCKED_DUE_TO_BIT_SET ) == ( EventBits_t ) 0 ) { /* The task timed out, just return the current event bit value. */ taskENTER_CRITICAL(); { uxReturn = pxEventBits->uxEventBits; /* Although the task got here because it timed out before the bits it was waiting for were set, it is possible that since it unblocked another task has set the bits. If this is the case then it needs to clear the bits before exiting. */ if( ( uxReturn & uxBitsToWaitFor ) == uxBitsToWaitFor ) { pxEventBits->uxEventBits &= ~uxBitsToWaitFor; } else { mtCOVERAGE_TEST_MARKER(); } } taskEXIT_CRITICAL(); xTimeoutOccurred = pdTRUE; } else { /* The task unblocked because the bits were set. */ } /* Control bits might be set as the task had blocked should not be returned. */ uxReturn &= ~eventEVENT_BITS_CONTROL_BYTES; } traceEVENT_GROUP_SYNC_END( xEventGroup, uxBitsToSet, uxBitsToWaitFor, xTimeoutOccurred ); return uxReturn; } /*-----------------------------------------------------------*/ EventBits_t xEventGroupWaitBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToWaitFor, const BaseType_t xClearOnExit, const BaseType_t xWaitForAllBits, TickType_t xTicksToWait ) { EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; EventBits_t uxReturn, uxControlBits = 0; BaseType_t xWaitConditionMet, xAlreadyYielded; BaseType_t xTimeoutOccurred = pdFALSE; /* Check the user is not attempting to wait on the bits used by the kernel itself, and that at least one bit is being requested. */ configASSERT( xEventGroup ); configASSERT( ( uxBitsToWaitFor & eventEVENT_BITS_CONTROL_BYTES ) == 0 ); configASSERT( uxBitsToWaitFor != 0 ); #if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) ) { configASSERT( !( ( xTaskGetSchedulerState() == taskSCHEDULER_SUSPENDED ) && ( xTicksToWait != 0 ) ) ); } #endif vTaskSuspendAll(); { const EventBits_t uxCurrentEventBits = pxEventBits->uxEventBits; /* Check to see if the wait condition is already met or not. */ xWaitConditionMet = prvTestWaitCondition( uxCurrentEventBits, uxBitsToWaitFor, xWaitForAllBits ); if( xWaitConditionMet != pdFALSE ) { /* The wait condition has already been met so there is no need to block. */ uxReturn = uxCurrentEventBits; xTicksToWait = ( TickType_t ) 0; /* Clear the wait bits if requested to do so. */ if( xClearOnExit != pdFALSE ) { pxEventBits->uxEventBits &= ~uxBitsToWaitFor; } else { mtCOVERAGE_TEST_MARKER(); } } else if( xTicksToWait == ( TickType_t ) 0 ) { /* The wait condition has not been met, but no block time was specified, so just return the current value. */ uxReturn = uxCurrentEventBits; } else { /* The task is going to block to wait for its required bits to be set. uxControlBits are used to remember the specified behaviour of this call to xEventGroupWaitBits() - for use when the event bits unblock the task. */ if( xClearOnExit != pdFALSE ) { uxControlBits |= eventCLEAR_EVENTS_ON_EXIT_BIT; } else { mtCOVERAGE_TEST_MARKER(); } if( xWaitForAllBits != pdFALSE ) { uxControlBits |= eventWAIT_FOR_ALL_BITS; } else { mtCOVERAGE_TEST_MARKER(); } /* Store the bits that the calling task is waiting for in the task's event list item so the kernel knows when a match is found. Then enter the blocked state. */ vTaskPlaceOnUnorderedEventList( &( pxEventBits->xTasksWaitingForBits ), ( uxBitsToWaitFor | uxControlBits ), xTicksToWait ); /* This is obsolete as it will get set after the task unblocks, but some compilers mistakenly generate a warning about the variable being returned without being set if it is not done. */ uxReturn = 0; traceEVENT_GROUP_WAIT_BITS_BLOCK( xEventGroup, uxBitsToWaitFor ); } } xAlreadyYielded = xTaskResumeAll(); if( xTicksToWait != ( TickType_t ) 0 ) { if( xAlreadyYielded == pdFALSE ) { portYIELD_WITHIN_API(); } else { mtCOVERAGE_TEST_MARKER(); } /* The task blocked to wait for its required bits to be set - at this point either the required bits were set or the block time expired. If the required bits were set they will have been stored in the task's event list item, and they should now be retrieved then cleared. */ uxReturn = uxTaskResetEventItemValue(); if( ( uxReturn & eventUNBLOCKED_DUE_TO_BIT_SET ) == ( EventBits_t ) 0 ) { taskENTER_CRITICAL(); { /* The task timed out, just return the current event bit value. */ uxReturn = pxEventBits->uxEventBits; /* It is possible that the event bits were updated between this task leaving the Blocked state and running again. */ if( prvTestWaitCondition( uxReturn, uxBitsToWaitFor, xWaitForAllBits ) != pdFALSE ) { if( xClearOnExit != pdFALSE ) { pxEventBits->uxEventBits &= ~uxBitsToWaitFor; } else { mtCOVERAGE_TEST_MARKER(); } } else { mtCOVERAGE_TEST_MARKER(); } } taskEXIT_CRITICAL(); /* Prevent compiler warnings when trace macros are not used. */ xTimeoutOccurred = pdFALSE; } else { /* The task unblocked because the bits were set. */ } /* The task blocked so control bits may have been set. */ uxReturn &= ~eventEVENT_BITS_CONTROL_BYTES; } traceEVENT_GROUP_WAIT_BITS_END( xEventGroup, uxBitsToWaitFor, xTimeoutOccurred ); return uxReturn; } /*-----------------------------------------------------------*/ EventBits_t xEventGroupClearBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToClear ) { EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; EventBits_t uxReturn; /* Check the user is not attempting to clear the bits used by the kernel itself. */ configASSERT( xEventGroup ); configASSERT( ( uxBitsToClear & eventEVENT_BITS_CONTROL_BYTES ) == 0 ); taskENTER_CRITICAL(); { traceEVENT_GROUP_CLEAR_BITS( xEventGroup, uxBitsToClear ); /* The value returned is the event group value prior to the bits being cleared. */ uxReturn = pxEventBits->uxEventBits; /* Clear the bits. */ pxEventBits->uxEventBits &= ~uxBitsToClear; } taskEXIT_CRITICAL(); return uxReturn; } /*-----------------------------------------------------------*/ #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( INCLUDE_xTimerPendFunctionCall == 1 ) && ( configUSE_TIMERS == 1 ) ) BaseType_t xEventGroupClearBitsFromISR( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToClear ) { BaseType_t xReturn; traceEVENT_GROUP_CLEAR_BITS_FROM_ISR( xEventGroup, uxBitsToClear ); xReturn = xTimerPendFunctionCallFromISR( vEventGroupClearBitsCallback, ( void * ) xEventGroup, ( uint32_t ) uxBitsToClear, NULL ); return xReturn; } #endif /*-----------------------------------------------------------*/ EventBits_t xEventGroupGetBitsFromISR( EventGroupHandle_t xEventGroup ) { UBaseType_t uxSavedInterruptStatus; EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; EventBits_t uxReturn; uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR(); { uxReturn = pxEventBits->uxEventBits; } portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ); return uxReturn; } /*-----------------------------------------------------------*/ EventBits_t xEventGroupSetBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet ) { ListItem_t *pxListItem, *pxNext; ListItem_t const *pxListEnd; List_t *pxList; EventBits_t uxBitsToClear = 0, uxBitsWaitedFor, uxControlBits; EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; BaseType_t xMatchFound = pdFALSE; /* Check the user is not attempting to set the bits used by the kernel itself. */ configASSERT( xEventGroup ); configASSERT( ( uxBitsToSet & eventEVENT_BITS_CONTROL_BYTES ) == 0 ); pxList = &( pxEventBits->xTasksWaitingForBits ); pxListEnd = listGET_END_MARKER( pxList ); /*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */ vTaskSuspendAll(); { traceEVENT_GROUP_SET_BITS( xEventGroup, uxBitsToSet ); pxListItem = listGET_HEAD_ENTRY( pxList ); /* Set the bits. */ pxEventBits->uxEventBits |= uxBitsToSet; /* See if the new bit value should unblock any tasks. */ while( pxListItem != pxListEnd ) { pxNext = listGET_NEXT( pxListItem ); uxBitsWaitedFor = listGET_LIST_ITEM_VALUE( pxListItem ); xMatchFound = pdFALSE; /* Split the bits waited for from the control bits. */ uxControlBits = uxBitsWaitedFor & eventEVENT_BITS_CONTROL_BYTES; uxBitsWaitedFor &= ~eventEVENT_BITS_CONTROL_BYTES; if( ( uxControlBits & eventWAIT_FOR_ALL_BITS ) == ( EventBits_t ) 0 ) { /* Just looking for single bit being set. */ if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) != ( EventBits_t ) 0 ) { xMatchFound = pdTRUE; } else { mtCOVERAGE_TEST_MARKER(); } } else if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) == uxBitsWaitedFor ) { /* All bits are set. */ xMatchFound = pdTRUE; } else { /* Need all bits to be set, but not all the bits were set. */ } if( xMatchFound != pdFALSE ) { /* The bits match. Should the bits be cleared on exit? */ if( ( uxControlBits & eventCLEAR_EVENTS_ON_EXIT_BIT ) != ( EventBits_t ) 0 ) { uxBitsToClear |= uxBitsWaitedFor; } else { mtCOVERAGE_TEST_MARKER(); } /* Store the actual event flag value in the task's event list item before removing the task from the event list. The eventUNBLOCKED_DUE_TO_BIT_SET bit is set so the task knows that is was unblocked due to its required bits matching, rather than because it timed out. */ vTaskRemoveFromUnorderedEventList( pxListItem, pxEventBits->uxEventBits | eventUNBLOCKED_DUE_TO_BIT_SET ); } /* Move onto the next list item. Note pxListItem->pxNext is not used here as the list item may have been removed from the event list and inserted into the ready/pending reading list. */ pxListItem = pxNext; } /* Clear any bits that matched when the eventCLEAR_EVENTS_ON_EXIT_BIT bit was set in the control word. */ pxEventBits->uxEventBits &= ~uxBitsToClear; } ( void ) xTaskResumeAll(); return pxEventBits->uxEventBits; } /*-----------------------------------------------------------*/ void vEventGroupDelete( EventGroupHandle_t xEventGroup ) { EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; const List_t *pxTasksWaitingForBits = &( pxEventBits->xTasksWaitingForBits ); vTaskSuspendAll(); { traceEVENT_GROUP_DELETE( xEventGroup ); while( listCURRENT_LIST_LENGTH( pxTasksWaitingForBits ) > ( UBaseType_t ) 0 ) { /* Unblock the task, returning 0 as the event list is being deleted and cannot therefore have any bits set. */ configASSERT( pxTasksWaitingForBits->xListEnd.pxNext != ( const ListItem_t * ) &( pxTasksWaitingForBits->xListEnd ) ); vTaskRemoveFromUnorderedEventList( pxTasksWaitingForBits->xListEnd.pxNext, eventUNBLOCKED_DUE_TO_BIT_SET ); } #if( ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) && ( configSUPPORT_STATIC_ALLOCATION == 0 ) ) { /* The event group can only have been allocated dynamically - free it again. */ vPortFree( pxEventBits ); } #elif( ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) && ( configSUPPORT_STATIC_ALLOCATION == 1 ) ) { /* The event group could have been allocated statically or dynamically, so check before attempting to free the memory. */ if( pxEventBits->ucStaticallyAllocated == ( uint8_t ) pdFALSE ) { vPortFree( pxEventBits ); } else { mtCOVERAGE_TEST_MARKER(); } } #endif /* configSUPPORT_DYNAMIC_ALLOCATION */ } ( void ) xTaskResumeAll(); } /*-----------------------------------------------------------*/ /* For internal use only - execute a 'set bits' command that was pended from an interrupt. */ void vEventGroupSetBitsCallback( void *pvEventGroup, const uint32_t ulBitsToSet ) { ( void ) xEventGroupSetBits( pvEventGroup, ( EventBits_t ) ulBitsToSet ); } /*-----------------------------------------------------------*/ /* For internal use only - execute a 'clear bits' command that was pended from an interrupt. */ void vEventGroupClearBitsCallback( void *pvEventGroup, const uint32_t ulBitsToClear ) { ( void ) xEventGroupClearBits( pvEventGroup, ( EventBits_t ) ulBitsToClear ); } /*-----------------------------------------------------------*/ static BaseType_t prvTestWaitCondition( const EventBits_t uxCurrentEventBits, const EventBits_t uxBitsToWaitFor, const BaseType_t xWaitForAllBits ) { BaseType_t xWaitConditionMet = pdFALSE; if( xWaitForAllBits == pdFALSE ) { /* Task only has to wait for one bit within uxBitsToWaitFor to be set. Is one already set? */ if( ( uxCurrentEventBits & uxBitsToWaitFor ) != ( EventBits_t ) 0 ) { xWaitConditionMet = pdTRUE; } else { mtCOVERAGE_TEST_MARKER(); } } else { /* Task has to wait for all the bits in uxBitsToWaitFor to be set. Are they set already? */ if( ( uxCurrentEventBits & uxBitsToWaitFor ) == uxBitsToWaitFor ) { xWaitConditionMet = pdTRUE; } else { mtCOVERAGE_TEST_MARKER(); } } return xWaitConditionMet; } /*-----------------------------------------------------------*/ #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( INCLUDE_xTimerPendFunctionCall == 1 ) && ( configUSE_TIMERS == 1 ) ) BaseType_t xEventGroupSetBitsFromISR( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet, BaseType_t *pxHigherPriorityTaskWoken ) { BaseType_t xReturn; traceEVENT_GROUP_SET_BITS_FROM_ISR( xEventGroup, uxBitsToSet ); xReturn = xTimerPendFunctionCallFromISR( vEventGroupSetBitsCallback, ( void * ) xEventGroup, ( uint32_t ) uxBitsToSet, pxHigherPriorityTaskWoken ); return xReturn; } #endif /*-----------------------------------------------------------*/ #if (configUSE_TRACE_FACILITY == 1) UBaseType_t uxEventGroupGetNumber( void* xEventGroup ) { UBaseType_t xReturn; EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup; if( xEventGroup == NULL ) { xReturn = 0; } else { xReturn = pxEventBits->uxEventGroupNumber; } return xReturn; } #endif