2 FreeRTOS V9.0.0rc1 - Copyright (C) 2016 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 This file is part of the FreeRTOS distribution.
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9 FreeRTOS is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License (version 2) as published by the
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11 Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.
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13 ***************************************************************************
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14 >>! NOTE: The modification to the GPL is included to allow you to !<<
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15 >>! distribute a combined work that includes FreeRTOS without being !<<
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16 >>! obliged to provide the source code for proprietary components !<<
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17 >>! outside of the FreeRTOS kernel. !<<
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18 ***************************************************************************
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20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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23 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * FreeRTOS provides completely free yet professionally developed, *
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28 * robust, strictly quality controlled, supported, and cross *
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29 * platform software that is more than just the market leader, it *
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30 * is the industry's de facto standard. *
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32 * Help yourself get started quickly while simultaneously helping *
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33 * to support the FreeRTOS project by purchasing a FreeRTOS *
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34 * tutorial book, reference manual, or both: *
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35 * http://www.FreeRTOS.org/Documentation *
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37 ***************************************************************************
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39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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40 the FAQ page "My application does not run, what could be wrong?". Have you
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41 defined configASSERT()?
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43 http://www.FreeRTOS.org/support - In return for receiving this top quality
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44 embedded software for free we request you assist our global community by
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45 participating in the support forum.
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47 http://www.FreeRTOS.org/training - Investing in training allows your team to
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48 be as productive as possible as early as possible. Now you can receive
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49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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50 Ltd, and the world's leading authority on the world's leading RTOS.
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52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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61 licenses offer ticketed support, indemnification and commercial middleware.
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63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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64 engineered and independently SIL3 certified version for use in safety and
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65 mission critical applications that require provable dependability.
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70 /* Standard includes. */
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73 /* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
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74 all the API functions to use the MPU wrappers. That should only be done when
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75 task.h is included from an application file. */
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76 #define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
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78 /* FreeRTOS includes. */
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79 #include "FreeRTOS.h"
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82 #include "event_groups.h"
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84 /* Lint e961 and e750 are suppressed as a MISRA exception justified because the
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85 MPU ports require MPU_WRAPPERS_INCLUDED_FROM_API_FILE to be defined for the
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86 header files above, but not in this file, in order to generate the correct
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87 privileged Vs unprivileged linkage and placement. */
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88 #undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE /*lint !e961 !e750. */
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90 /* The following bit fields convey control information in a task's event list
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91 item value. It is important they don't clash with the
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92 taskEVENT_LIST_ITEM_VALUE_IN_USE definition. */
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93 #if configUSE_16_BIT_TICKS == 1
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94 #define eventCLEAR_EVENTS_ON_EXIT_BIT 0x0100U
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95 #define eventUNBLOCKED_DUE_TO_BIT_SET 0x0200U
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96 #define eventWAIT_FOR_ALL_BITS 0x0400U
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97 #define eventEVENT_BITS_CONTROL_BYTES 0xff00U
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99 #define eventCLEAR_EVENTS_ON_EXIT_BIT 0x01000000UL
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100 #define eventUNBLOCKED_DUE_TO_BIT_SET 0x02000000UL
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101 #define eventWAIT_FOR_ALL_BITS 0x04000000UL
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102 #define eventEVENT_BITS_CONTROL_BYTES 0xff000000UL
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105 typedef struct xEventGroupDefinition
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107 EventBits_t uxEventBits;
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108 List_t xTasksWaitingForBits; /*< List of tasks waiting for a bit to be set. */
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110 #if( configUSE_TRACE_FACILITY == 1 )
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111 UBaseType_t uxEventGroupNumber;
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114 #if( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) )
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115 uint8_t ucStaticallyAllocated; /*< Set to pdTRUE if the event group is statically allocated to ensure no attempt is made to free the memory. */
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119 /*-----------------------------------------------------------*/
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122 * Test the bits set in uxCurrentEventBits to see if the wait condition is met.
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123 * The wait condition is defined by xWaitForAllBits. If xWaitForAllBits is
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124 * pdTRUE then the wait condition is met if all the bits set in uxBitsToWaitFor
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125 * are also set in uxCurrentEventBits. If xWaitForAllBits is pdFALSE then the
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126 * wait condition is met if any of the bits set in uxBitsToWait for are also set
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127 * in uxCurrentEventBits.
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129 static BaseType_t prvTestWaitCondition( const EventBits_t uxCurrentEventBits, const EventBits_t uxBitsToWaitFor, const BaseType_t xWaitForAllBits ) PRIVILEGED_FUNCTION;
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131 /*-----------------------------------------------------------*/
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133 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
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135 EventGroupHandle_t xEventGroupCreateStatic( StaticEventGroup_t *pxStaticEventGroup )
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137 EventGroup_t *pxEventBits;
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139 /* A StaticEventGroup_t object must be provided. */
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140 configASSERT( pxStaticEventGroup );
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142 /* The user has provided a statically allocated event group - use it. */
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143 pxEventBits = ( EventGroup_t * ) pxStaticEventGroup; /*lint !e740 EventGroup_t and StaticEventGroup_t are guaranteed to have the same size and alignment requirement - checked by configASSERT(). */
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145 if( pxEventBits != NULL )
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147 pxEventBits->uxEventBits = 0;
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148 vListInitialise( &( pxEventBits->xTasksWaitingForBits ) );
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150 #if( configSUPPORT_DYNAMIC_ALLOCATION == 1 )
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152 /* Both static and dynamic allocation can be used, so note that
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153 this event group was created statically in case the event group
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154 is later deleted. */
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155 pxEventBits->ucStaticallyAllocated = pdTRUE;
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157 #endif /* configSUPPORT_DYNAMIC_ALLOCATION */
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159 traceEVENT_GROUP_CREATE( pxEventBits );
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163 traceEVENT_GROUP_CREATE_FAILED();
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166 return ( EventGroupHandle_t ) pxEventBits;
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169 #endif /* configSUPPORT_STATIC_ALLOCATION */
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170 /*-----------------------------------------------------------*/
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172 #if( configSUPPORT_DYNAMIC_ALLOCATION == 1 )
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174 EventGroupHandle_t xEventGroupCreate( void )
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176 EventGroup_t *pxEventBits;
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178 /* Allocate the event group. */
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179 pxEventBits = ( EventGroup_t * ) pvPortMalloc( sizeof( EventGroup_t ) );
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181 if( pxEventBits != NULL )
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183 pxEventBits->uxEventBits = 0;
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184 vListInitialise( &( pxEventBits->xTasksWaitingForBits ) );
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186 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
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188 /* Both static and dynamic allocation can be used, so note this
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189 event group was allocated statically in case the event group is
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191 pxEventBits->ucStaticallyAllocated = pdFALSE;
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193 #endif /* configSUPPORT_STATIC_ALLOCATION */
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195 traceEVENT_GROUP_CREATE( pxEventBits );
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199 traceEVENT_GROUP_CREATE_FAILED();
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202 return ( EventGroupHandle_t ) pxEventBits;
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205 #endif /* configSUPPORT_DYNAMIC_ALLOCATION */
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206 /*-----------------------------------------------------------*/
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208 EventBits_t xEventGroupSync( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet, const EventBits_t uxBitsToWaitFor, TickType_t xTicksToWait )
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210 EventBits_t uxOriginalBitValue, uxReturn;
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211 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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212 BaseType_t xAlreadyYielded;
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213 BaseType_t xTimeoutOccurred = pdFALSE;
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215 configASSERT( ( uxBitsToWaitFor & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
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216 configASSERT( uxBitsToWaitFor != 0 );
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217 #if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) )
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219 configASSERT( !( ( xTaskGetSchedulerState() == taskSCHEDULER_SUSPENDED ) && ( xTicksToWait != 0 ) ) );
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225 uxOriginalBitValue = pxEventBits->uxEventBits;
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227 ( void ) xEventGroupSetBits( xEventGroup, uxBitsToSet );
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229 if( ( ( uxOriginalBitValue | uxBitsToSet ) & uxBitsToWaitFor ) == uxBitsToWaitFor )
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231 /* All the rendezvous bits are now set - no need to block. */
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232 uxReturn = ( uxOriginalBitValue | uxBitsToSet );
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234 /* Rendezvous always clear the bits. They will have been cleared
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235 already unless this is the only task in the rendezvous. */
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236 pxEventBits->uxEventBits &= ~uxBitsToWaitFor;
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242 if( xTicksToWait != ( TickType_t ) 0 )
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244 traceEVENT_GROUP_SYNC_BLOCK( xEventGroup, uxBitsToSet, uxBitsToWaitFor );
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246 /* Store the bits that the calling task is waiting for in the
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247 task's event list item so the kernel knows when a match is
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248 found. Then enter the blocked state. */
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249 vTaskPlaceOnUnorderedEventList( &( pxEventBits->xTasksWaitingForBits ), ( uxBitsToWaitFor | eventCLEAR_EVENTS_ON_EXIT_BIT | eventWAIT_FOR_ALL_BITS ), xTicksToWait );
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251 /* This assignment is obsolete as uxReturn will get set after
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252 the task unblocks, but some compilers mistakenly generate a
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253 warning about uxReturn being returned without being set if the
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254 assignment is omitted. */
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259 /* The rendezvous bits were not set, but no block time was
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260 specified - just return the current event bit value. */
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261 uxReturn = pxEventBits->uxEventBits;
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265 xAlreadyYielded = xTaskResumeAll();
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267 if( xTicksToWait != ( TickType_t ) 0 )
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269 if( xAlreadyYielded == pdFALSE )
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271 portYIELD_WITHIN_API();
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275 mtCOVERAGE_TEST_MARKER();
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278 /* The task blocked to wait for its required bits to be set - at this
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279 point either the required bits were set or the block time expired. If
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280 the required bits were set they will have been stored in the task's
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281 event list item, and they should now be retrieved then cleared. */
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282 uxReturn = uxTaskResetEventItemValue();
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284 if( ( uxReturn & eventUNBLOCKED_DUE_TO_BIT_SET ) == ( EventBits_t ) 0 )
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286 /* The task timed out, just return the current event bit value. */
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287 taskENTER_CRITICAL();
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289 uxReturn = pxEventBits->uxEventBits;
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291 /* Although the task got here because it timed out before the
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292 bits it was waiting for were set, it is possible that since it
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293 unblocked another task has set the bits. If this is the case
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294 then it needs to clear the bits before exiting. */
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295 if( ( uxReturn & uxBitsToWaitFor ) == uxBitsToWaitFor )
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297 pxEventBits->uxEventBits &= ~uxBitsToWaitFor;
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301 mtCOVERAGE_TEST_MARKER();
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304 taskEXIT_CRITICAL();
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306 xTimeoutOccurred = pdTRUE;
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310 /* The task unblocked because the bits were set. */
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313 /* Control bits might be set as the task had blocked should not be
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315 uxReturn &= ~eventEVENT_BITS_CONTROL_BYTES;
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318 traceEVENT_GROUP_SYNC_END( xEventGroup, uxBitsToSet, uxBitsToWaitFor, xTimeoutOccurred );
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322 /*-----------------------------------------------------------*/
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324 EventBits_t xEventGroupWaitBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToWaitFor, const BaseType_t xClearOnExit, const BaseType_t xWaitForAllBits, TickType_t xTicksToWait )
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326 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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327 EventBits_t uxReturn, uxControlBits = 0;
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328 BaseType_t xWaitConditionMet, xAlreadyYielded;
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329 BaseType_t xTimeoutOccurred = pdFALSE;
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331 /* Check the user is not attempting to wait on the bits used by the kernel
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332 itself, and that at least one bit is being requested. */
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333 configASSERT( xEventGroup );
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334 configASSERT( ( uxBitsToWaitFor & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
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335 configASSERT( uxBitsToWaitFor != 0 );
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336 #if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) )
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338 configASSERT( !( ( xTaskGetSchedulerState() == taskSCHEDULER_SUSPENDED ) && ( xTicksToWait != 0 ) ) );
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344 const EventBits_t uxCurrentEventBits = pxEventBits->uxEventBits;
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346 /* Check to see if the wait condition is already met or not. */
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347 xWaitConditionMet = prvTestWaitCondition( uxCurrentEventBits, uxBitsToWaitFor, xWaitForAllBits );
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349 if( xWaitConditionMet != pdFALSE )
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351 /* The wait condition has already been met so there is no need to
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353 uxReturn = uxCurrentEventBits;
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354 xTicksToWait = ( TickType_t ) 0;
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356 /* Clear the wait bits if requested to do so. */
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357 if( xClearOnExit != pdFALSE )
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359 pxEventBits->uxEventBits &= ~uxBitsToWaitFor;
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363 mtCOVERAGE_TEST_MARKER();
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366 else if( xTicksToWait == ( TickType_t ) 0 )
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368 /* The wait condition has not been met, but no block time was
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369 specified, so just return the current value. */
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370 uxReturn = uxCurrentEventBits;
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374 /* The task is going to block to wait for its required bits to be
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375 set. uxControlBits are used to remember the specified behaviour of
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376 this call to xEventGroupWaitBits() - for use when the event bits
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377 unblock the task. */
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378 if( xClearOnExit != pdFALSE )
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380 uxControlBits |= eventCLEAR_EVENTS_ON_EXIT_BIT;
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384 mtCOVERAGE_TEST_MARKER();
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387 if( xWaitForAllBits != pdFALSE )
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389 uxControlBits |= eventWAIT_FOR_ALL_BITS;
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393 mtCOVERAGE_TEST_MARKER();
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396 /* Store the bits that the calling task is waiting for in the
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397 task's event list item so the kernel knows when a match is
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398 found. Then enter the blocked state. */
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399 vTaskPlaceOnUnorderedEventList( &( pxEventBits->xTasksWaitingForBits ), ( uxBitsToWaitFor | uxControlBits ), xTicksToWait );
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401 /* This is obsolete as it will get set after the task unblocks, but
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402 some compilers mistakenly generate a warning about the variable
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403 being returned without being set if it is not done. */
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406 traceEVENT_GROUP_WAIT_BITS_BLOCK( xEventGroup, uxBitsToWaitFor );
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409 xAlreadyYielded = xTaskResumeAll();
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411 if( xTicksToWait != ( TickType_t ) 0 )
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413 if( xAlreadyYielded == pdFALSE )
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415 portYIELD_WITHIN_API();
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419 mtCOVERAGE_TEST_MARKER();
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422 /* The task blocked to wait for its required bits to be set - at this
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423 point either the required bits were set or the block time expired. If
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424 the required bits were set they will have been stored in the task's
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425 event list item, and they should now be retrieved then cleared. */
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426 uxReturn = uxTaskResetEventItemValue();
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428 if( ( uxReturn & eventUNBLOCKED_DUE_TO_BIT_SET ) == ( EventBits_t ) 0 )
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430 taskENTER_CRITICAL();
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432 /* The task timed out, just return the current event bit value. */
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433 uxReturn = pxEventBits->uxEventBits;
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435 /* It is possible that the event bits were updated between this
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436 task leaving the Blocked state and running again. */
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437 if( prvTestWaitCondition( uxReturn, uxBitsToWaitFor, xWaitForAllBits ) != pdFALSE )
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439 if( xClearOnExit != pdFALSE )
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441 pxEventBits->uxEventBits &= ~uxBitsToWaitFor;
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445 mtCOVERAGE_TEST_MARKER();
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450 mtCOVERAGE_TEST_MARKER();
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453 taskEXIT_CRITICAL();
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455 /* Prevent compiler warnings when trace macros are not used. */
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456 xTimeoutOccurred = pdFALSE;
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460 /* The task unblocked because the bits were set. */
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463 /* The task blocked so control bits may have been set. */
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464 uxReturn &= ~eventEVENT_BITS_CONTROL_BYTES;
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466 traceEVENT_GROUP_WAIT_BITS_END( xEventGroup, uxBitsToWaitFor, xTimeoutOccurred );
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470 /*-----------------------------------------------------------*/
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472 EventBits_t xEventGroupClearBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToClear )
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474 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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475 EventBits_t uxReturn;
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477 /* Check the user is not attempting to clear the bits used by the kernel
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479 configASSERT( xEventGroup );
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480 configASSERT( ( uxBitsToClear & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
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482 taskENTER_CRITICAL();
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484 traceEVENT_GROUP_CLEAR_BITS( xEventGroup, uxBitsToClear );
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486 /* The value returned is the event group value prior to the bits being
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488 uxReturn = pxEventBits->uxEventBits;
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490 /* Clear the bits. */
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491 pxEventBits->uxEventBits &= ~uxBitsToClear;
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493 taskEXIT_CRITICAL();
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497 /*-----------------------------------------------------------*/
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499 #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( INCLUDE_xTimerPendFunctionCall == 1 ) && ( configUSE_TIMERS == 1 ) )
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501 BaseType_t xEventGroupClearBitsFromISR( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToClear )
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503 BaseType_t xReturn;
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505 traceEVENT_GROUP_CLEAR_BITS_FROM_ISR( xEventGroup, uxBitsToClear );
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506 xReturn = xTimerPendFunctionCallFromISR( vEventGroupClearBitsCallback, ( void * ) xEventGroup, ( uint32_t ) uxBitsToClear, NULL );
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512 /*-----------------------------------------------------------*/
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514 EventBits_t xEventGroupGetBitsFromISR( EventGroupHandle_t xEventGroup )
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516 UBaseType_t uxSavedInterruptStatus;
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517 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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518 EventBits_t uxReturn;
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520 uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
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522 uxReturn = pxEventBits->uxEventBits;
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524 portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus );
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528 /*-----------------------------------------------------------*/
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530 EventBits_t xEventGroupSetBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet )
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532 ListItem_t *pxListItem, *pxNext;
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533 ListItem_t const *pxListEnd;
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535 EventBits_t uxBitsToClear = 0, uxBitsWaitedFor, uxControlBits;
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536 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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537 BaseType_t xMatchFound = pdFALSE;
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539 /* Check the user is not attempting to set the bits used by the kernel
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541 configASSERT( xEventGroup );
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542 configASSERT( ( uxBitsToSet & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
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544 pxList = &( pxEventBits->xTasksWaitingForBits );
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545 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. */
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548 traceEVENT_GROUP_SET_BITS( xEventGroup, uxBitsToSet );
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550 pxListItem = listGET_HEAD_ENTRY( pxList );
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552 /* Set the bits. */
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553 pxEventBits->uxEventBits |= uxBitsToSet;
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555 /* See if the new bit value should unblock any tasks. */
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556 while( pxListItem != pxListEnd )
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558 pxNext = listGET_NEXT( pxListItem );
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559 uxBitsWaitedFor = listGET_LIST_ITEM_VALUE( pxListItem );
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560 xMatchFound = pdFALSE;
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562 /* Split the bits waited for from the control bits. */
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563 uxControlBits = uxBitsWaitedFor & eventEVENT_BITS_CONTROL_BYTES;
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564 uxBitsWaitedFor &= ~eventEVENT_BITS_CONTROL_BYTES;
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566 if( ( uxControlBits & eventWAIT_FOR_ALL_BITS ) == ( EventBits_t ) 0 )
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568 /* Just looking for single bit being set. */
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569 if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) != ( EventBits_t ) 0 )
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571 xMatchFound = pdTRUE;
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575 mtCOVERAGE_TEST_MARKER();
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578 else if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) == uxBitsWaitedFor )
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580 /* All bits are set. */
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581 xMatchFound = pdTRUE;
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585 /* Need all bits to be set, but not all the bits were set. */
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588 if( xMatchFound != pdFALSE )
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590 /* The bits match. Should the bits be cleared on exit? */
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591 if( ( uxControlBits & eventCLEAR_EVENTS_ON_EXIT_BIT ) != ( EventBits_t ) 0 )
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593 uxBitsToClear |= uxBitsWaitedFor;
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597 mtCOVERAGE_TEST_MARKER();
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600 /* Store the actual event flag value in the task's event list
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601 item before removing the task from the event list. The
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602 eventUNBLOCKED_DUE_TO_BIT_SET bit is set so the task knows
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603 that is was unblocked due to its required bits matching, rather
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604 than because it timed out. */
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605 ( void ) xTaskRemoveFromUnorderedEventList( pxListItem, pxEventBits->uxEventBits | eventUNBLOCKED_DUE_TO_BIT_SET );
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608 /* Move onto the next list item. Note pxListItem->pxNext is not
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609 used here as the list item may have been removed from the event list
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610 and inserted into the ready/pending reading list. */
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611 pxListItem = pxNext;
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614 /* Clear any bits that matched when the eventCLEAR_EVENTS_ON_EXIT_BIT
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615 bit was set in the control word. */
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616 pxEventBits->uxEventBits &= ~uxBitsToClear;
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618 ( void ) xTaskResumeAll();
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620 return pxEventBits->uxEventBits;
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622 /*-----------------------------------------------------------*/
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624 void vEventGroupDelete( EventGroupHandle_t xEventGroup )
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626 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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627 const List_t *pxTasksWaitingForBits = &( pxEventBits->xTasksWaitingForBits );
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631 traceEVENT_GROUP_DELETE( xEventGroup );
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633 while( listCURRENT_LIST_LENGTH( pxTasksWaitingForBits ) > ( UBaseType_t ) 0 )
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635 /* Unblock the task, returning 0 as the event list is being deleted
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636 and cannot therefore have any bits set. */
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637 configASSERT( pxTasksWaitingForBits->xListEnd.pxNext != ( ListItem_t * ) &( pxTasksWaitingForBits->xListEnd ) );
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638 ( void ) xTaskRemoveFromUnorderedEventList( pxTasksWaitingForBits->xListEnd.pxNext, eventUNBLOCKED_DUE_TO_BIT_SET );
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641 #if( ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) && ( configSUPPORT_STATIC_ALLOCATION == 0 ) )
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643 /* The event group can only have been allocated dynamically - free
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645 vPortFree( pxEventBits );
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647 #elif( ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) && ( configSUPPORT_STATIC_ALLOCATION == 1 ) )
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649 /* The event group could have been allocated statically or
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650 dynamically, so check before attempting to free the memory. */
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651 if( pxEventBits->ucStaticallyAllocated == ( uint8_t ) pdFALSE )
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653 vPortFree( pxEventBits );
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657 mtCOVERAGE_TEST_MARKER();
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660 #endif /* configSUPPORT_DYNAMIC_ALLOCATION */
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662 ( void ) xTaskResumeAll();
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664 /*-----------------------------------------------------------*/
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666 /* For internal use only - execute a 'set bits' command that was pended from
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668 void vEventGroupSetBitsCallback( void *pvEventGroup, const uint32_t ulBitsToSet )
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670 ( void ) xEventGroupSetBits( pvEventGroup, ( EventBits_t ) ulBitsToSet );
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672 /*-----------------------------------------------------------*/
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674 /* For internal use only - execute a 'clear bits' command that was pended from
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676 void vEventGroupClearBitsCallback( void *pvEventGroup, const uint32_t ulBitsToClear )
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678 ( void ) xEventGroupClearBits( pvEventGroup, ( EventBits_t ) ulBitsToClear );
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680 /*-----------------------------------------------------------*/
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682 static BaseType_t prvTestWaitCondition( const EventBits_t uxCurrentEventBits, const EventBits_t uxBitsToWaitFor, const BaseType_t xWaitForAllBits )
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684 BaseType_t xWaitConditionMet = pdFALSE;
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686 if( xWaitForAllBits == pdFALSE )
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688 /* Task only has to wait for one bit within uxBitsToWaitFor to be
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689 set. Is one already set? */
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690 if( ( uxCurrentEventBits & uxBitsToWaitFor ) != ( EventBits_t ) 0 )
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692 xWaitConditionMet = pdTRUE;
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696 mtCOVERAGE_TEST_MARKER();
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701 /* Task has to wait for all the bits in uxBitsToWaitFor to be set.
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702 Are they set already? */
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703 if( ( uxCurrentEventBits & uxBitsToWaitFor ) == uxBitsToWaitFor )
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705 xWaitConditionMet = pdTRUE;
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709 mtCOVERAGE_TEST_MARKER();
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713 return xWaitConditionMet;
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715 /*-----------------------------------------------------------*/
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717 #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( INCLUDE_xTimerPendFunctionCall == 1 ) && ( configUSE_TIMERS == 1 ) )
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719 BaseType_t xEventGroupSetBitsFromISR( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet, BaseType_t *pxHigherPriorityTaskWoken )
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721 BaseType_t xReturn;
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723 traceEVENT_GROUP_SET_BITS_FROM_ISR( xEventGroup, uxBitsToSet );
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724 xReturn = xTimerPendFunctionCallFromISR( vEventGroupSetBitsCallback, ( void * ) xEventGroup, ( uint32_t ) uxBitsToSet, pxHigherPriorityTaskWoken );
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730 /*-----------------------------------------------------------*/
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732 #if (configUSE_TRACE_FACILITY == 1)
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734 UBaseType_t uxEventGroupGetNumber( void* xEventGroup )
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736 UBaseType_t xReturn;
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737 EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
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739 if( xEventGroup == NULL )
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745 xReturn = pxEventBits->uxEventGroupNumber;
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