2 FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
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4 ***************************************************************************
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20 * and 8pm GMT (although please allow up to 24 hours in case of *
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23 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 ***NOTE*** The exception to the GPL is included to allow you to distribute
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31 a combined work that includes FreeRTOS without being obliged to provide the
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32 source code for proprietary components outside of the FreeRTOS kernel.
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33 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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34 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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35 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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55 * This file defines one of the more complex set of demo/test tasks. They are
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56 * designed to stress test the queue implementation though pseudo simultaneous
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57 * multiple reads and multiple writes from both tasks of varying priority and
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58 * interrupts. The interrupts are prioritised such to ensure that nesting
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59 * occurs (for those ports that support it).
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61 * The test ensures that, while being accessed from three tasks and two
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62 * interrupts, all the data sent to the queues is also received from
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63 * the same queue, and that no duplicate items are either sent or received.
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64 * The tests also ensure that a low priority task is never able to successfully
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65 * read from or write to a queue when a task of higher priority is attempting
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66 * the same operation.
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69 /* Standard includes. */
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72 /* SafeRTOS includes. */
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73 #include "FreeRTOS.h"
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77 /* Demo app includes. */
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78 #include "IntQueue.h"
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79 #include "IntQueueTimer.h"
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81 /* Priorities used by test tasks. */
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82 #define intqHIGHER_PRIORITY ( configMAX_PRIORITIES - 2 )
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83 #define intqLOWER_PRIORITY ( tskIDLE_PRIORITY )
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85 /* The number of values to send/receive before checking that all values were
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86 processed as expected. */
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87 #define intqNUM_VALUES_TO_LOG ( 200 )
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88 #define intqSHORT_DELAY ( 75 )
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90 /* The value by which the value being sent to or received from a queue should
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91 increment past intqNUM_VALUES_TO_LOG before we check that all values have been
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92 sent/received correctly. This is done to ensure that all tasks and interrupts
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93 accessing the queue have completed their accesses with the
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94 intqNUM_VALUES_TO_LOG range. */
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95 #define intqVALUE_OVERRUN ( 50 )
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97 /* The delay used by the polling task. A short delay is used for code
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99 #define intqONE_TICK_DELAY ( 1 )
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101 /* Each task and interrupt is given a unique identifier. This value is used to
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102 identify which task sent or received each value. The identifier is also used
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103 to distinguish between two tasks that are running the same task function. */
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104 #define intqHIGH_PRIORITY_TASK1 ( ( unsigned portBASE_TYPE ) 1 )
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105 #define intqHIGH_PRIORITY_TASK2 ( ( unsigned portBASE_TYPE ) 2 )
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106 #define intqLOW_PRIORITY_TASK ( ( unsigned portBASE_TYPE ) 3 )
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107 #define intqFIRST_INTERRUPT ( ( unsigned portBASE_TYPE ) 4 )
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108 #define intqSECOND_INTERRUPT ( ( unsigned portBASE_TYPE ) 5 )
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109 #define intqQUEUE_LENGTH ( ( unsigned portBASE_TYPE ) 10 )
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111 /* At least intqMIN_ACCEPTABLE_TASK_COUNT values should be sent to/received
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112 from each queue by each task, otherwise an error is detected. */
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113 #define intqMIN_ACCEPTABLE_TASK_COUNT ( 5 )
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115 /* Send the next value to the queue that is normally empty. This is called
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116 from within the interrupts. */
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117 #define timerNORMALLY_EMPTY_TX() \
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118 if( xQueueIsQueueFullFromISR( xNormallyEmptyQueue ) != pdTRUE ) \
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120 unsigned portBASE_TYPE uxSavedInterruptStatus; \
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121 uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR(); \
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123 uxValueForNormallyEmptyQueue++; \
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124 xQueueSendFromISR( xNormallyEmptyQueue, ( void * ) &uxValueForNormallyEmptyQueue, &xHigherPriorityTaskWoken ); \
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126 portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ); \
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129 /* Send the next value to the queue that is normally full. This is called
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130 from within the interrupts. */
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131 #define timerNORMALLY_FULL_TX() \
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132 if( xQueueIsQueueFullFromISR( xNormallyFullQueue ) != pdTRUE ) \
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134 unsigned portBASE_TYPE uxSavedInterruptStatus; \
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135 uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR(); \
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137 uxValueForNormallyFullQueue++; \
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138 xQueueSendFromISR( xNormallyFullQueue, ( void * ) &uxValueForNormallyFullQueue, &xHigherPriorityTaskWoken ); \
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140 portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedInterruptStatus ); \
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143 /* Receive a value from the normally empty queue. This is called from within
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145 #define timerNORMALLY_EMPTY_RX() \
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146 if( xQueueReceiveFromISR( xNormallyEmptyQueue, &uxRxedValue, &xHigherPriorityTaskWoken ) != pdPASS ) \
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148 prvQueueAccessLogError( __LINE__ ); \
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152 prvRecordValue_NormallyEmpty( uxRxedValue, intqSECOND_INTERRUPT ); \
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155 /* Receive a value from the normally full queue. This is called from within
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157 #define timerNORMALLY_FULL_RX() \
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158 if( xQueueReceiveFromISR( xNormallyFullQueue, &uxRxedValue, &xHigherPriorityTaskWoken ) == pdPASS ) \
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160 prvRecordValue_NormallyFull( uxRxedValue, intqSECOND_INTERRUPT ); \
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164 /*-----------------------------------------------------------*/
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166 /* The two queues used by the test. */
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167 static xQueueHandle xNormallyEmptyQueue, xNormallyFullQueue;
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169 /* Variables used to detect a stall in one of the tasks. */
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170 static unsigned portBASE_TYPE uxHighPriorityLoops1 = 0, uxHighPriorityLoops2 = 0, uxLowPriorityLoops1 = 0, uxLowPriorityLoops2 = 0;
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172 /* Any unexpected behaviour sets xErrorStatus to fail and log the line that
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173 caused the error in xErrorLine. */
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174 static portBASE_TYPE xErrorStatus = pdPASS;
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175 static volatile unsigned portBASE_TYPE xErrorLine = ( unsigned portBASE_TYPE ) 0;
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177 /* Used for sequencing between tasks. */
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178 static portBASE_TYPE xWasSuspended = pdFALSE;
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180 /* The values that are sent to the queues. An incremented value is sent each
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181 time to each queue. */
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182 volatile unsigned portBASE_TYPE uxValueForNormallyEmptyQueue = 0, uxValueForNormallyFullQueue = 0;
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184 /* A handle to some of the tasks is required so they can be suspended/resumed. */
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185 xTaskHandle xHighPriorityNormallyEmptyTask1, xHighPriorityNormallyEmptyTask2, xHighPriorityNormallyFullTask1, xHighPriorityNormallyFullTask2;
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187 /* When a value is received in a queue the value is ticked off in the array
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188 the array position of the value is set to a the identifier of the task or
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189 interrupt that accessed the queue. This way missing or duplicate values can be
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191 static unsigned portCHAR ucNormallyEmptyReceivedValues[ intqNUM_VALUES_TO_LOG ] = { 0 };
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192 static unsigned portCHAR ucNormallyFullReceivedValues[ intqNUM_VALUES_TO_LOG ] = { 0 };
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194 /* The test tasks themselves. */
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195 static void prvLowerPriorityNormallyEmptyTask( void *pvParameters );
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196 static void prvLowerPriorityNormallyFullTask( void *pvParameters );
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197 static void prvHigherPriorityNormallyEmptyTask( void *pvParameters );
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198 static void prv1stHigherPriorityNormallyFullTask( void *pvParameters );
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199 static void prv2ndHigherPriorityNormallyFullTask( void *pvParameters );
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201 /* Used to mark the positions within the ucNormallyEmptyReceivedValues and
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202 ucNormallyFullReceivedValues arrays, while checking for duplicates. */
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203 static void prvRecordValue_NormallyEmpty( unsigned portBASE_TYPE uxValue, unsigned portBASE_TYPE uxSource );
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204 static void prvRecordValue_NormallyFull( unsigned portBASE_TYPE uxValue, unsigned portBASE_TYPE uxSource );
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206 /* Logs the line on which an error occurred. */
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207 static void prvQueueAccessLogError( unsigned portBASE_TYPE uxLine );
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209 /*-----------------------------------------------------------*/
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211 void vStartInterruptQueueTasks( void )
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213 /* Start the test tasks. */
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214 xTaskCreate( prvHigherPriorityNormallyEmptyTask, ( signed portCHAR * ) "H1QRx", configMINIMAL_STACK_SIZE, ( void * ) intqHIGH_PRIORITY_TASK1, intqHIGHER_PRIORITY, &xHighPriorityNormallyEmptyTask1 );
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215 xTaskCreate( prvHigherPriorityNormallyEmptyTask, ( signed portCHAR * ) "H2QRx", configMINIMAL_STACK_SIZE, ( void * ) intqHIGH_PRIORITY_TASK2, intqHIGHER_PRIORITY, &xHighPriorityNormallyEmptyTask2 );
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216 xTaskCreate( prvLowerPriorityNormallyEmptyTask, ( signed portCHAR * ) "LQRx", configMINIMAL_STACK_SIZE, NULL, intqLOWER_PRIORITY, NULL );
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217 xTaskCreate( prv1stHigherPriorityNormallyFullTask, ( signed portCHAR * ) "H1QTx", configMINIMAL_STACK_SIZE, ( void * ) intqHIGH_PRIORITY_TASK1, intqHIGHER_PRIORITY, &xHighPriorityNormallyFullTask1 );
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218 xTaskCreate( prv2ndHigherPriorityNormallyFullTask, ( signed portCHAR * ) "H1QTx", configMINIMAL_STACK_SIZE, ( void * ) intqHIGH_PRIORITY_TASK2, intqHIGHER_PRIORITY, &xHighPriorityNormallyFullTask2 );
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219 xTaskCreate( prvLowerPriorityNormallyFullTask, ( signed portCHAR * ) "LQRx", configMINIMAL_STACK_SIZE, NULL, intqLOWER_PRIORITY, NULL );
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221 /* Create the queues that are accessed by multiple tasks and multiple
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223 xNormallyFullQueue = xQueueCreate( intqQUEUE_LENGTH, ( unsigned portBASE_TYPE ) sizeof( unsigned portBASE_TYPE ) );
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224 xNormallyEmptyQueue = xQueueCreate( intqQUEUE_LENGTH, ( unsigned portBASE_TYPE ) sizeof( unsigned portBASE_TYPE ) );
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226 /* vQueueAddToRegistry() adds the queue to the queue registry, if one is
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227 in use. The queue registry is provided as a means for kernel aware
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228 debuggers to locate queues and has no purpose if a kernel aware debugger
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229 is not being used. The call to vQueueAddToRegistry() will be removed
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230 by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is
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231 defined to be less than 1. */
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232 vQueueAddToRegistry( xNormallyFullQueue, ( signed portCHAR * ) "NormallyFull" );
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233 vQueueAddToRegistry( xNormallyEmptyQueue, ( signed portCHAR * ) "NormallyEmpty" );
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235 /*-----------------------------------------------------------*/
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237 static void prvRecordValue_NormallyFull( unsigned portBASE_TYPE uxValue, unsigned portBASE_TYPE uxSource )
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239 if( uxValue < intqNUM_VALUES_TO_LOG )
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241 /* We don't expect to receive the same value twice, so if the value
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242 has already been marked as received an error has occurred. */
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243 if( ucNormallyFullReceivedValues[ uxValue ] != 0x00 )
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245 prvQueueAccessLogError( __LINE__ );
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248 /* Log that this value has been received. */
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249 ucNormallyFullReceivedValues[ uxValue ] = uxSource;
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252 /*-----------------------------------------------------------*/
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254 static void prvRecordValue_NormallyEmpty( unsigned portBASE_TYPE uxValue, unsigned portBASE_TYPE uxSource )
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256 if( uxValue < intqNUM_VALUES_TO_LOG )
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258 /* We don't expect to receive the same value twice, so if the value
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259 has already been marked as received an error has occurred. */
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260 if( ucNormallyEmptyReceivedValues[ uxValue ] != 0x00 )
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262 prvQueueAccessLogError( __LINE__ );
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265 /* Log that this value has been received. */
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266 ucNormallyEmptyReceivedValues[ uxValue ] = uxSource;
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269 /*-----------------------------------------------------------*/
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271 static void prvQueueAccessLogError( unsigned portBASE_TYPE uxLine )
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273 /* Latch the line number that caused the error. */
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274 xErrorLine = uxLine;
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275 xErrorStatus = pdFAIL;
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277 /*-----------------------------------------------------------*/
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279 static void prvHigherPriorityNormallyEmptyTask( void *pvParameters )
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281 unsigned portBASE_TYPE uxRxed, ux, uxTask1, uxTask2, uxErrorCount1 = 0, uxErrorCount2 = 0;
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283 /* The timer should not be started until after the scheduler has started.
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284 More than one task is running this code so we check the parameter value
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285 to determine which task should start the timer. */
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286 if( ( unsigned portBASE_TYPE ) pvParameters == intqHIGH_PRIORITY_TASK1 )
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288 vInitialiseTimerForIntQueueTest();
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293 /* Block waiting to receive a value from the normally empty queue.
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294 Interrupts will write to the queue so we should receive a value. */
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295 if( xQueueReceive( xNormallyEmptyQueue, &uxRxed, intqSHORT_DELAY ) != pdPASS )
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297 prvQueueAccessLogError( __LINE__ );
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301 /* Note which value was received so we can check all expected
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302 values are received and no values are duplicated. */
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303 prvRecordValue_NormallyEmpty( uxRxed, ( unsigned portBASE_TYPE ) pvParameters );
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306 /* Ensure the other task running this code gets a chance to execute. */
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309 if( ( unsigned portBASE_TYPE ) pvParameters == intqHIGH_PRIORITY_TASK1 )
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311 /* Have we received all the expected values? */
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312 if( uxValueForNormallyEmptyQueue > ( intqNUM_VALUES_TO_LOG + intqVALUE_OVERRUN ) )
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314 vTaskSuspend( xHighPriorityNormallyEmptyTask2 );
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319 /* Loop through the array, checking that both tasks have
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320 placed values into the array, and that no values are missing.
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321 Start at 1 as we expect position 0 to be unused. */
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322 for( ux = 1; ux < intqNUM_VALUES_TO_LOG; ux++ )
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324 if( ucNormallyEmptyReceivedValues[ ux ] == 0 )
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326 /* A value is missing. */
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327 prvQueueAccessLogError( __LINE__ );
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331 if( ucNormallyEmptyReceivedValues[ ux ] == intqHIGH_PRIORITY_TASK1 )
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333 /* Value was placed into the array by task 1. */
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336 else if( ucNormallyEmptyReceivedValues[ ux ] == intqHIGH_PRIORITY_TASK2 )
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338 /* Value was placed into the array by task 2. */
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344 if( uxTask1 < intqMIN_ACCEPTABLE_TASK_COUNT )
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346 /* Only task 2 seemed to log any values. */
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348 if( uxErrorCount1 > 2 )
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350 prvQueueAccessLogError( __LINE__ );
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358 if( uxTask2 < intqMIN_ACCEPTABLE_TASK_COUNT )
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360 /* Only task 1 seemed to log any values. */
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362 if( uxErrorCount2 > 2 )
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364 prvQueueAccessLogError( __LINE__ );
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372 /* Clear the array again, ready to start a new cycle. */
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373 memset( ucNormallyEmptyReceivedValues, 0x00, sizeof( ucNormallyEmptyReceivedValues ) );
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375 uxHighPriorityLoops1++;
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376 uxValueForNormallyEmptyQueue = 0;
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378 /* Suspend ourselves, allowing the lower priority task to
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379 actually receive something from the queue. Until now it
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380 will have been prevented from doing so by the higher
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381 priority tasks. The lower priority task will resume us
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382 if it receives something. We will then resume the other
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383 higher priority task. */
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384 vTaskSuspend( NULL );
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385 vTaskResume( xHighPriorityNormallyEmptyTask2 );
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390 /*-----------------------------------------------------------*/
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392 static void prvLowerPriorityNormallyEmptyTask( void *pvParameters )
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394 unsigned portBASE_TYPE uxValue, uxRxed;
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396 /* The parameters are not being used so avoid compiler warnings. */
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397 ( void ) pvParameters;
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401 if( xQueueReceive( xNormallyEmptyQueue, &uxRxed, intqONE_TICK_DELAY ) != errQUEUE_EMPTY )
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403 /* We should only obtain a value when the high priority task is
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405 if( xTaskIsTaskSuspended( xHighPriorityNormallyEmptyTask1 ) == pdFALSE )
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407 prvQueueAccessLogError( __LINE__ );
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410 prvRecordValue_NormallyEmpty( uxRxed, intqLOW_PRIORITY_TASK );
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412 /* Wake the higher priority task again. */
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413 vTaskResume( xHighPriorityNormallyEmptyTask1 );
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414 uxLowPriorityLoops1++;
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418 /* Raise our priority while we send so we can preempt the higher
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419 priority task, and ensure we get the Tx value into the queue. */
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420 vTaskPrioritySet( NULL, intqHIGHER_PRIORITY + 1 );
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422 portENTER_CRITICAL();
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424 uxValueForNormallyEmptyQueue++;
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425 uxValue = uxValueForNormallyEmptyQueue;
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427 portEXIT_CRITICAL();
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429 if( xQueueSend( xNormallyEmptyQueue, &uxValue, portMAX_DELAY ) != pdPASS )
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431 prvQueueAccessLogError( __LINE__ );
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434 vTaskPrioritySet( NULL, intqLOWER_PRIORITY );
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438 /*-----------------------------------------------------------*/
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440 static void prv1stHigherPriorityNormallyFullTask( void *pvParameters )
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442 unsigned portBASE_TYPE uxValueToTx, ux;
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444 /* The parameters are not being used so avoid compiler warnings. */
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445 ( void ) pvParameters;
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447 /* Make sure the queue starts full or near full. >> 1 as there are two
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448 high priority tasks. */
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449 for( ux = 0; ux < ( intqQUEUE_LENGTH >> 1 ); ux++ )
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451 portENTER_CRITICAL();
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453 uxValueForNormallyFullQueue++;
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454 uxValueToTx = uxValueForNormallyFullQueue;
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456 portEXIT_CRITICAL();
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458 xQueueSend( xNormallyFullQueue, &uxValueToTx, intqSHORT_DELAY );
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463 portENTER_CRITICAL();
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465 uxValueForNormallyFullQueue++;
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466 uxValueToTx = uxValueForNormallyFullQueue;
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468 portEXIT_CRITICAL();
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470 if( xQueueSend( xNormallyFullQueue, &uxValueToTx, intqSHORT_DELAY ) != pdPASS )
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472 /* intqHIGH_PRIORITY_TASK2 is never suspended so we would not
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473 expect it to ever time out. */
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474 prvQueueAccessLogError( __LINE__ );
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477 /* Allow the other task running this code to run. */
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480 /* Have all the expected values been sent to the queue? */
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481 if( uxValueToTx > ( intqNUM_VALUES_TO_LOG + intqVALUE_OVERRUN ) )
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483 /* Make sure the other high priority task completes its send of
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484 any values below intqNUM_VALUE_TO_LOG. */
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485 vTaskDelay( intqSHORT_DELAY );
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487 vTaskSuspend( xHighPriorityNormallyFullTask2 );
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489 if( xWasSuspended == pdTRUE )
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491 /* We would have expected the other high priority task to have
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492 set this back to false by now. */
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493 prvQueueAccessLogError( __LINE__ );
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496 /* Set the suspended flag so an error is not logged if the other
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497 task recognises a time out when it is unsuspended. */
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498 xWasSuspended = pdTRUE;
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500 /* Start at 1 as we expect position 0 to be unused. */
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501 for( ux = 1; ux < intqNUM_VALUES_TO_LOG; ux++ )
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503 if( ucNormallyFullReceivedValues[ ux ] == 0 )
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505 /* A value was missing. */
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506 prvQueueAccessLogError( __LINE__ );
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510 /* Reset the array ready for the next cycle. */
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511 memset( ucNormallyFullReceivedValues, 0x00, sizeof( ucNormallyFullReceivedValues ) );
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513 uxHighPriorityLoops2++;
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514 uxValueForNormallyFullQueue = 0;
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516 /* Suspend ourselves, allowing the lower priority task to
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517 actually receive something from the queue. Until now it
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518 will have been prevented from doing so by the higher
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519 priority tasks. The lower priority task will resume us
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520 if it receives something. We will then resume the other
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521 higher priority task. */
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522 vTaskSuspend( NULL );
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523 vTaskResume( xHighPriorityNormallyFullTask2 );
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527 /*-----------------------------------------------------------*/
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529 static void prv2ndHigherPriorityNormallyFullTask( void *pvParameters )
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531 unsigned portBASE_TYPE uxValueToTx, ux;
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533 /* The parameters are not being used so avoid compiler warnings. */
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534 ( void ) pvParameters;
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536 /* Make sure the queue starts full or near full. >> 1 as there are two
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537 high priority tasks. */
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538 for( ux = 0; ux < ( intqQUEUE_LENGTH >> 1 ); ux++ )
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540 portENTER_CRITICAL();
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542 uxValueForNormallyFullQueue++;
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543 uxValueToTx = uxValueForNormallyFullQueue;
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545 portEXIT_CRITICAL();
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547 xQueueSend( xNormallyFullQueue, &uxValueToTx, intqSHORT_DELAY );
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552 portENTER_CRITICAL();
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554 uxValueForNormallyFullQueue++;
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555 uxValueToTx = uxValueForNormallyFullQueue;
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557 portEXIT_CRITICAL();
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559 if( xQueueSend( xNormallyFullQueue, &uxValueToTx, intqSHORT_DELAY ) != pdPASS )
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561 if( xWasSuspended != pdTRUE )
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563 /* It is ok to time out if the task has been suspended. */
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564 prvQueueAccessLogError( __LINE__ );
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568 xWasSuspended = pdFALSE;
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573 /*-----------------------------------------------------------*/
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575 static void prvLowerPriorityNormallyFullTask( void *pvParameters )
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577 unsigned portBASE_TYPE uxValue, uxTxed = 9999;
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579 /* The parameters are not being used so avoid compiler warnings. */
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580 ( void ) pvParameters;
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584 if( xQueueSend( xNormallyFullQueue, &uxTxed, intqONE_TICK_DELAY ) != errQUEUE_FULL )
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586 /* We would only expect to succeed when the higher priority task
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588 if( xTaskIsTaskSuspended( xHighPriorityNormallyFullTask1 ) == pdFALSE )
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590 prvQueueAccessLogError( __LINE__ );
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593 vTaskResume( xHighPriorityNormallyFullTask1 );
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594 uxLowPriorityLoops2++;
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598 /* Raise our priority while we receive so we can preempt the higher
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599 priority task, and ensure we get the value from the queue. */
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600 vTaskPrioritySet( NULL, intqHIGHER_PRIORITY + 1 );
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602 if( xQueueReceive( xNormallyFullQueue, &uxValue, portMAX_DELAY ) != pdPASS )
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604 prvQueueAccessLogError( __LINE__ );
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608 prvRecordValue_NormallyFull( uxValue, intqLOW_PRIORITY_TASK );
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611 vTaskPrioritySet( NULL, intqLOWER_PRIORITY );
\r
615 /*-----------------------------------------------------------*/
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617 portBASE_TYPE xFirstTimerHandler( void )
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619 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE, uxRxedValue;
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620 static unsigned portBASE_TYPE uxNextOperation = 0;
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622 /* Called from a timer interrupt. Perform various read and write
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623 accesses on the queues. */
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627 if( uxNextOperation & ( unsigned portBASE_TYPE ) 0x01 )
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629 timerNORMALLY_EMPTY_TX();
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630 timerNORMALLY_EMPTY_TX();
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631 timerNORMALLY_EMPTY_TX();
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635 timerNORMALLY_FULL_RX();
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636 timerNORMALLY_FULL_RX();
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637 timerNORMALLY_FULL_RX();
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640 return xHigherPriorityTaskWoken;
\r
642 /*-----------------------------------------------------------*/
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644 portBASE_TYPE xSecondTimerHandler( void )
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646 unsigned portBASE_TYPE uxRxedValue;
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647 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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648 static unsigned portBASE_TYPE uxNextOperation = 0;
\r
650 /* Called from a timer interrupt. Perform various read and write
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651 accesses on the queues. */
\r
655 if( uxNextOperation & ( unsigned portBASE_TYPE ) 0x01 )
\r
657 timerNORMALLY_EMPTY_TX();
\r
658 timerNORMALLY_EMPTY_TX();
\r
660 timerNORMALLY_EMPTY_RX();
\r
661 timerNORMALLY_EMPTY_RX();
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665 timerNORMALLY_FULL_RX();
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666 timerNORMALLY_FULL_TX();
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667 timerNORMALLY_FULL_TX();
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668 timerNORMALLY_FULL_TX();
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669 timerNORMALLY_FULL_TX();
\r
672 return xHigherPriorityTaskWoken;
\r
674 /*-----------------------------------------------------------*/
\r
677 portBASE_TYPE xAreIntQueueTasksStillRunning( void )
\r
679 static unsigned portBASE_TYPE uxLastHighPriorityLoops1 = 0, uxLastHighPriorityLoops2 = 0, uxLastLowPriorityLoops1 = 0, uxLastLowPriorityLoops2 = 0;
\r
681 /* xErrorStatus can be set outside of this function. This function just
\r
682 checks that all the tasks are still cycling. */
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684 if( uxHighPriorityLoops1 == uxLastHighPriorityLoops1 )
\r
686 /* The high priority 1 task has stalled. */
\r
687 prvQueueAccessLogError( __LINE__ );
\r
690 uxLastHighPriorityLoops1 = uxHighPriorityLoops1;
\r
692 if( uxHighPriorityLoops2 == uxLastHighPriorityLoops2 )
\r
694 /* The high priority 2 task has stalled. */
\r
695 prvQueueAccessLogError( __LINE__ );
\r
698 uxLastHighPriorityLoops2 = uxHighPriorityLoops2;
\r
700 if( uxLowPriorityLoops1 == uxLastLowPriorityLoops1 )
\r
702 /* The low priority 1 task has stalled. */
\r
703 prvQueueAccessLogError( __LINE__ );
\r
706 uxLastLowPriorityLoops1 = uxLowPriorityLoops1;
\r
708 if( uxLowPriorityLoops2 == uxLastLowPriorityLoops2 )
\r
710 /* The low priority 2 task has stalled. */
\r
711 prvQueueAccessLogError( __LINE__ );
\r
714 uxLastLowPriorityLoops2 = uxLowPriorityLoops2;
\r
716 return xErrorStatus;
\r