2 * FreeRTOS Kernel V10.0.1
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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29 *******************************************************************************
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30 * NOTE 1: The Win32 port is a simulation (or is that emulation?) only! Do not
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31 * expect to get real time behaviour from the Win32 port or this demo
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32 * application. It is provided as a convenient development and demonstration
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35 * Windows will not be running the FreeRTOS simulator threads continuously, so
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36 * the timing information in the FreeRTOS+Trace logs have no meaningful units.
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37 * See the documentation page for the Windows simulator for an explanation of
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39 * http://www.freertos.org/FreeRTOS-Windows-Simulator-Emulator-for-Visual-Studio-and-Eclipse-MingW.html
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40 * - READ THE WEB DOCUMENTATION FOR THIS PORT FOR MORE INFORMATION ON USING IT -
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42 * NOTE 2: This project provides two demo applications. A simple blinky style
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43 * project, and a more comprehensive test and demo application. The
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44 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting in main.c is used to select
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45 * between the two. See the notes on using mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
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46 * in main.c. This file implements the comprehensive test and demo version.
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48 * NOTE 3: This file only contains the source code that is specific to the
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49 * basic demo. Generic functions, such FreeRTOS hook functions, are defined in
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51 *******************************************************************************
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53 * main() creates all the demo application tasks, then starts the scheduler.
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54 * The web documentation provides more details of the standard demo application
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55 * tasks, which provide no particular functionality but do provide a good
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56 * example of how to use the FreeRTOS API.
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58 * In addition to the standard demo tasks, the following tasks and tests are
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59 * defined and/or created within this file:
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61 * "Check" task - This only executes every five seconds but has a high priority
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62 * to ensure it gets processor time. Its main function is to check that all the
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63 * standard demo tasks are still operational. While no errors have been
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64 * discovered the check task will print out "OK" and the current simulated tick
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65 * time. If an error is discovered in the execution of a task then the check
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66 * task will print out an appropriate error message.
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71 /* Standard includes. */
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75 /* Kernel includes. */
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76 #include <FreeRTOS.h>
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82 /* Standard demo includes. */
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84 #include "integer.h"
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85 #include "semtest.h"
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87 #include "GenQTest.h"
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89 #include "recmutex.h"
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91 #include "TimerDemo.h"
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92 #include "countsem.h"
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94 #include "dynamic.h"
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95 #include "QueueSet.h"
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96 #include "QueueOverwrite.h"
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97 #include "EventGroupsDemo.h"
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98 #include "IntSemTest.h"
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99 #include "TaskNotify.h"
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100 #include "QueueSetPolling.h"
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101 #include "StaticAllocation.h"
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102 #include "blocktim.h"
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103 #include "AbortDelay.h"
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104 #include "MessageBufferDemo.h"
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105 #include "StreamBufferDemo.h"
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106 #include "StreamBufferInterrupt.h"
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107 #include "MessageBufferAMP.h"
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109 /* Priorities at which the tasks are created. */
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110 #define mainCHECK_TASK_PRIORITY ( configMAX_PRIORITIES - 2 )
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111 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 1 )
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112 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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113 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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114 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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115 #define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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116 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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117 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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118 #define mainFLOP_TASK_PRIORITY ( tskIDLE_PRIORITY )
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119 #define mainQUEUE_OVERWRITE_PRIORITY ( tskIDLE_PRIORITY )
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121 #define mainTIMER_TEST_PERIOD ( 50 )
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123 /* Task function prototypes. */
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124 static void prvCheckTask( void *pvParameters );
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126 /* A task that is created from the idle task to test the functionality of
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127 eTaskStateGet(). */
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128 static void prvTestTask( void *pvParameters );
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131 * Called from the idle task hook function to demonstrate a few utility
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132 * functions that are not demonstrated by any of the standard demo tasks.
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134 static void prvDemonstrateTaskStateAndHandleGetFunctions( void );
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137 * Called from the idle task hook function to demonstrate the use of
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138 * xTimerPendFunctionCall() as xTimerPendFunctionCall() is not demonstrated by
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139 * any of the standard demo tasks.
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141 static void prvDemonstratePendingFunctionCall( void );
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144 * The function that is pended by prvDemonstratePendingFunctionCall().
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146 static void prvPendedFunction( void *pvParameter1, uint32_t ulParameter2 );
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149 * prvDemonstrateTimerQueryFunctions() is called from the idle task hook
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150 * function to demonstrate the use of functions that query information about a
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151 * software timer. prvTestTimerCallback() is the callback function for the
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152 * timer being queried.
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154 static void prvDemonstrateTimerQueryFunctions( void );
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155 static void prvTestTimerCallback( TimerHandle_t xTimer );
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158 * A task to demonstrate the use of the xQueueSpacesAvailable() function.
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160 static void prvDemoQueueSpaceFunctions( void *pvParameters );
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163 * Tasks that ensure indefinite delays are truly indefinite.
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165 static void prvPermanentlyBlockingSemaphoreTask( void *pvParameters );
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166 static void prvPermanentlyBlockingNotificationTask( void *pvParameters );
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168 /*-----------------------------------------------------------*/
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170 /* The variable into which error messages are latched. */
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171 static char *pcStatusMessage = "No errors";
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173 /* This semaphore is created purely to test using the vSemaphoreDelete() and
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174 semaphore tracing API functions. It has no other purpose. */
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175 static SemaphoreHandle_t xMutexToDelete = NULL;
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177 /*-----------------------------------------------------------*/
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179 int main_full( void )
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181 /* Start the check task as described at the top of this file. */
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182 xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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184 /* Create the standard demo tasks. */
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185 vStartTaskNotifyTask();
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186 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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187 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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188 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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189 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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190 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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191 vStartQueuePeekTasks();
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192 vStartMathTasks( mainFLOP_TASK_PRIORITY );
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193 vStartRecursiveMutexTasks();
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194 vStartCountingSemaphoreTasks();
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195 vStartDynamicPriorityTasks();
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196 vStartQueueSetTasks();
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197 vStartQueueOverwriteTask( mainQUEUE_OVERWRITE_PRIORITY );
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198 xTaskCreate( prvDemoQueueSpaceFunctions, "QSpace", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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199 vStartEventGroupTasks();
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200 vStartInterruptSemaphoreTasks();
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201 vStartQueueSetPollingTask();
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202 vCreateBlockTimeTasks();
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203 vCreateAbortDelayTasks();
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204 xTaskCreate( prvDemoQueueSpaceFunctions, "QSpace", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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205 xTaskCreate( prvPermanentlyBlockingSemaphoreTask, "BlockSem", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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206 xTaskCreate( prvPermanentlyBlockingNotificationTask, "BlockNoti", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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208 vStartMessageBufferTasks();
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209 vStartStreamBufferTasks();
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210 vStartStreamBufferInterruptDemo();
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211 vStartMessageBufferAMPTasks();
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213 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
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215 vStartStaticallyAllocatedTasks();
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219 #if( configUSE_PREEMPTION != 0 )
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221 /* Don't expect these tasks to pass when preemption is not used. */
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222 vStartTimerDemoTask( mainTIMER_TEST_PERIOD );
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226 /* The suicide tasks must be created last as they need to know how many
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227 tasks were running prior to their creation. This then allows them to
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228 ascertain whether or not the correct/expected number of tasks are running at
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230 vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
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232 /* Create the semaphore that will be deleted in the idle task hook. This
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233 is done purely to test the use of vSemaphoreDelete(). */
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234 xMutexToDelete = xSemaphoreCreateMutex();
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236 /* Start the scheduler itself. */
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237 vTaskStartScheduler();
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239 /* Should never get here unless there was not enough heap space to create
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240 the idle and other system tasks. */
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243 /*-----------------------------------------------------------*/
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245 static void prvCheckTask( void *pvParameters )
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247 TickType_t xNextWakeTime;
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248 const TickType_t xCycleFrequency = pdMS_TO_TICKS( 2500UL );
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250 /* Just to remove compiler warning. */
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251 ( void ) pvParameters;
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253 /* Initialise xNextWakeTime - this only needs to be done once. */
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254 xNextWakeTime = xTaskGetTickCount();
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258 /* Place this task in the blocked state until it is time to run again. */
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259 vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );
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261 /* Check the standard demo tasks are running without error. */
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262 #if( configUSE_PREEMPTION != 0 )
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264 /* These tasks are only created when preemption is used. */
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265 if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
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267 pcStatusMessage = "Error: TimerDemo";
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272 if( xAreStreamBufferTasksStillRunning() != pdTRUE )
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274 pcStatusMessage = "Error: StreamBuffer";
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276 else if( xAreMessageBufferTasksStillRunning() != pdTRUE )
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278 pcStatusMessage = "Error: MessageBuffer";
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280 else if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
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282 pcStatusMessage = "Error: Notification";
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284 else if( xAreInterruptSemaphoreTasksStillRunning() != pdTRUE )
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286 pcStatusMessage = "Error: IntSem";
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288 else if( xAreEventGroupTasksStillRunning() != pdTRUE )
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290 pcStatusMessage = "Error: EventGroup";
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292 else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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294 pcStatusMessage = "Error: IntMath";
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296 else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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298 pcStatusMessage = "Error: GenQueue";
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300 else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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302 pcStatusMessage = "Error: QueuePeek";
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304 else if( xAreBlockingQueuesStillRunning() != pdTRUE )
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306 pcStatusMessage = "Error: BlockQueue";
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308 else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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310 pcStatusMessage = "Error: SemTest";
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312 else if( xArePollingQueuesStillRunning() != pdTRUE )
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314 pcStatusMessage = "Error: PollQueue";
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316 else if( xAreMathsTaskStillRunning() != pdPASS )
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318 pcStatusMessage = "Error: Flop";
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320 else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
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322 pcStatusMessage = "Error: RecMutex";
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324 else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
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326 pcStatusMessage = "Error: CountSem";
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328 else if( xIsCreateTaskStillRunning() != pdTRUE )
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330 pcStatusMessage = "Error: Death";
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332 else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
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334 pcStatusMessage = "Error: Dynamic";
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336 else if( xAreQueueSetTasksStillRunning() != pdPASS )
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338 pcStatusMessage = "Error: Queue set";
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340 else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
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342 pcStatusMessage = "Error: Queue overwrite";
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344 else if( xAreQueueSetPollTasksStillRunning() != pdPASS )
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346 pcStatusMessage = "Error: Queue set polling";
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348 else if( xAreBlockTimeTestTasksStillRunning() != pdPASS )
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350 pcStatusMessage = "Error: Block time";
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352 else if( xAreAbortDelayTestTasksStillRunning() != pdPASS )
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354 pcStatusMessage = "Error: Abort delay";
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356 else if( xIsInterruptStreamBufferDemoStillRunning() != pdPASS )
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358 pcStatusMessage = "Error: Stream buffer interrupt";
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360 else if( xAreMessageBufferAMPTasksStillRunning() != pdPASS )
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362 pcStatusMessage = "Error: Message buffer AMP";
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365 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
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366 else if( xAreStaticAllocationTasksStillRunning() != pdPASS )
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368 pcStatusMessage = "Error: Static allocation";
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370 #endif /* configSUPPORT_STATIC_ALLOCATION */
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372 /* This is the only task that uses stdout so its ok to call printf()
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374 printf( "%s - tick count %u - free heap %u - min free heap %u\r\n", pcStatusMessage,
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375 xTaskGetTickCount(),
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376 xPortGetFreeHeapSize(),
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377 xPortGetMinimumEverFreeHeapSize() );
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381 /*-----------------------------------------------------------*/
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383 static void prvTestTask( void *pvParameters )
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385 const unsigned long ulMSToSleep = 5;
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387 /* Just to remove compiler warnings. */
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388 ( void ) pvParameters;
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390 /* This task is just used to test the eTaskStateGet() function. It
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391 does not have anything to do. */
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394 /* Sleep to reduce CPU load, but don't sleep indefinitely in case there are
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395 tasks waiting to be terminated by the idle task. */
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396 Sleep( ulMSToSleep );
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399 /*-----------------------------------------------------------*/
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401 /* Called from vApplicationIdleHook(), which is defined in main.c. */
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402 void vFullDemoIdleFunction( void )
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404 const unsigned long ulMSToSleep = 15;
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407 /* Sleep to reduce CPU load, but don't sleep indefinitely in case there are
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408 tasks waiting to be terminated by the idle task. */
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409 Sleep( ulMSToSleep );
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411 /* Demonstrate a few utility functions that are not demonstrated by any of
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412 the standard demo tasks. */
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413 prvDemonstrateTaskStateAndHandleGetFunctions();
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415 /* Demonstrate the use of xTimerPendFunctionCall(), which is not
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416 demonstrated by any of the standard demo tasks. */
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417 prvDemonstratePendingFunctionCall();
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419 /* Demonstrate the use of functions that query information about a software
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421 prvDemonstrateTimerQueryFunctions();
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424 /* If xMutexToDelete has not already been deleted, then delete it now.
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425 This is done purely to demonstrate the use of, and test, the
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426 vSemaphoreDelete() macro. Care must be taken not to delete a semaphore
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427 that has tasks blocked on it. */
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428 if( xMutexToDelete != NULL )
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430 /* For test purposes, add the mutex to the registry, then remove it
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431 again, before it is deleted - checking its name is as expected before
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432 and after the assertion into the registry and its removal from the
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434 configASSERT( pcQueueGetName( xMutexToDelete ) == NULL );
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435 vQueueAddToRegistry( xMutexToDelete, "Test_Mutex" );
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436 configASSERT( strcmp( pcQueueGetName( xMutexToDelete ), "Test_Mutex" ) == 0 );
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437 vQueueUnregisterQueue( xMutexToDelete );
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438 configASSERT( pcQueueGetName( xMutexToDelete ) == NULL );
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440 vSemaphoreDelete( xMutexToDelete );
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441 xMutexToDelete = NULL;
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444 /* Exercise heap_5 a bit. The malloc failed hook will trap failed
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445 allocations so there is no need to test here. */
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446 pvAllocated = pvPortMalloc( ( rand() % 500 ) + 1 );
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447 vPortFree( pvAllocated );
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449 /* Exit after a fixed time so code coverage results are written to the
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451 #if( configCOVERAGE_TEST == 1 )
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453 const TickType_t xMaxRunTime = pdMS_TO_TICKS( 60000UL );
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455 if( xTaskGetTickCount() >= xMaxRunTime )
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462 /*-----------------------------------------------------------*/
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464 /* Called by vApplicationTickHook(), which is defined in main.c. */
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465 void vFullDemoTickHookFunction( void )
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467 TaskHandle_t xTimerTask;
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469 /* Call the periodic timer test, which tests the timer API functions that
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470 can be called from an ISR. */
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471 #if( configUSE_PREEMPTION != 0 )
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473 /* Only created when preemption is used. */
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474 vTimerPeriodicISRTests();
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478 /* Call the periodic queue overwrite from ISR demo. */
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479 vQueueOverwritePeriodicISRDemo();
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481 /* Write to a queue that is in use as part of the queue set demo to
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482 demonstrate using queue sets from an ISR. */
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483 vQueueSetAccessQueueSetFromISR();
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484 vQueueSetPollingInterruptAccess();
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486 /* Exercise event groups from interrupts. */
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487 vPeriodicEventGroupsProcessing();
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489 /* Exercise giving mutexes from an interrupt. */
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490 vInterruptSemaphorePeriodicTest();
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492 /* Exercise using task notifications from an interrupt. */
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493 xNotifyTaskFromISR();
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495 /* Writes to stream buffer byte by byte to test the stream buffer trigger
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496 level functionality. */
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497 vPeriodicStreamBufferProcessing();
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499 /* Writes a string to a string buffer four bytes at a time to demonstrate
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500 a stream being sent from an interrupt to a task. */
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501 vBasicStreamBufferSendFromISR();
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503 /* For code coverage purposes. */
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504 xTimerTask = xTimerGetTimerDaemonTaskHandle();
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505 configASSERT( uxTaskPriorityGetFromISR( xTimerTask ) == configTIMER_TASK_PRIORITY );
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506 ( void ) xTimerTask; /* In case configASSERT() is not defined. */
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508 /*-----------------------------------------------------------*/
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510 static void prvPendedFunction( void *pvParameter1, uint32_t ulParameter2 )
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512 static uint32_t ulLastParameter1 = 1000UL, ulLastParameter2 = 0UL;
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513 uint32_t ulParameter1;
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515 ulParameter1 = ( uint32_t ) pvParameter1;
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517 /* Ensure the parameters are as expected. */
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518 configASSERT( ulParameter1 == ( ulLastParameter1 + 1 ) );
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519 configASSERT( ulParameter2 == ( ulLastParameter2 + 1 ) );
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521 /* Remember the parameters for the next time the function is called. */
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522 ulLastParameter1 = ulParameter1;
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523 ulLastParameter2 = ulParameter2;
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525 /* Remove compiler warnings in case configASSERT() is not defined. */
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526 ( void ) ulLastParameter1;
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527 ( void ) ulLastParameter2;
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529 /*-----------------------------------------------------------*/
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531 static void prvTestTimerCallback( TimerHandle_t xTimer )
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533 /* This is the callback function for the timer accessed by
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534 prvDemonstrateTimerQueryFunctions(). The callback does not do anything. */
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537 /*-----------------------------------------------------------*/
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539 static void prvDemonstrateTimerQueryFunctions( void )
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541 static TimerHandle_t xTimer = NULL;
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542 const char *pcTimerName = "TestTimer";
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543 volatile TickType_t xExpiryTime;
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544 const TickType_t xDontBlock = 0;
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546 if( xTimer == NULL )
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548 xTimer = xTimerCreate( pcTimerName, portMAX_DELAY, pdTRUE, NULL, prvTestTimerCallback );
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550 if( xTimer != NULL )
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552 /* Called from the idle task so a block time must not be
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554 xTimerStart( xTimer, xDontBlock );
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558 if( xTimer != NULL )
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560 /* Demonstrate querying a timer's name. */
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561 configASSERT( strcmp( pcTimerGetName( xTimer ), pcTimerName ) == 0 );
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563 /* Demonstrate querying a timer's period. */
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564 configASSERT( xTimerGetPeriod( xTimer ) == portMAX_DELAY );
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566 /* Demonstrate querying a timer's next expiry time, although nothing is
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567 done with the returned value. Note if the expiry time is less than the
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568 maximum tick count then the expiry time has overflowed from the current
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569 time. In this case the expiry time was set to portMAX_DELAY, so it is
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570 expected to be less than the current time until the current time has
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571 itself overflowed. */
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572 xExpiryTime = xTimerGetExpiryTime( xTimer );
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573 ( void ) xExpiryTime;
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576 /*-----------------------------------------------------------*/
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578 static void prvDemonstratePendingFunctionCall( void )
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580 static uint32_t ulParameter1 = 1000UL, ulParameter2 = 0UL;
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581 const TickType_t xDontBlock = 0; /* This is called from the idle task so must *not* attempt to block. */
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583 /* prvPendedFunction() just expects the parameters to be incremented by one
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584 each time it is called. */
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588 /* Pend the function call, sending the parameters. */
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589 xTimerPendFunctionCall( prvPendedFunction, ( void * ) ulParameter1, ulParameter2, xDontBlock );
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591 /*-----------------------------------------------------------*/
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593 static void prvDemonstrateTaskStateAndHandleGetFunctions( void )
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595 TaskHandle_t xIdleTaskHandle, xTimerTaskHandle;
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597 static portBASE_TYPE xPerformedOneShotTests = pdFALSE;
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598 TaskHandle_t xTestTask;
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599 TaskStatus_t xTaskInfo;
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600 extern StackType_t uxTimerTaskStack[];
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602 /* Demonstrate the use of the xTimerGetTimerDaemonTaskHandle() and
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603 xTaskGetIdleTaskHandle() functions. Also try using the function that sets
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604 the task number. */
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605 xIdleTaskHandle = xTaskGetIdleTaskHandle();
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606 xTimerTaskHandle = xTimerGetTimerDaemonTaskHandle();
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608 /* This is the idle hook, so the current task handle should equal the
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609 returned idle task handle. */
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610 if( xTaskGetCurrentTaskHandle() != xIdleTaskHandle )
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612 pcStatusMessage = "Error: Returned idle task handle was incorrect";
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615 /* Check the same handle is obtained using the idle task's name. First try
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616 with the wrong name, then the right name. */
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617 if( xTaskGetHandle( "Idle" ) == xIdleTaskHandle )
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619 pcStatusMessage = "Error: Returned handle for name Idle was incorrect";
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622 if( xTaskGetHandle( "IDLE" ) != xIdleTaskHandle )
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624 pcStatusMessage = "Error: Returned handle for name Idle was incorrect";
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627 /* Check the timer task handle was returned correctly. */
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628 pcTaskName = pcTaskGetName( xTimerTaskHandle );
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629 if( strcmp( pcTaskName, "Tmr Svc" ) != 0 )
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631 pcStatusMessage = "Error: Returned timer task handle was incorrect";
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634 if( xTaskGetHandle( "Tmr Svc" ) != xTimerTaskHandle )
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636 pcStatusMessage = "Error: Returned handle for name Tmr Svc was incorrect";
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639 /* This task is running, make sure it's state is returned as running. */
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640 if( eTaskStateGet( xIdleTaskHandle ) != eRunning )
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642 pcStatusMessage = "Error: Returned idle task state was incorrect";
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645 /* If this task is running, then the timer task must be blocked. */
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646 if( eTaskStateGet( xTimerTaskHandle ) != eBlocked )
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648 pcStatusMessage = "Error: Returned timer task state was incorrect";
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651 /* Also with the vTaskGetInfo() function. */
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652 vTaskGetInfo( xTimerTaskHandle, /* The task being queried. */
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653 &xTaskInfo, /* The structure into which information on the task will be written. */
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654 pdTRUE, /* Include the task's high watermark in the structure. */
\r
655 eInvalid ); /* Include the task state in the structure. */
\r
657 /* Check the information returned by vTaskGetInfo() is as expected. */
\r
658 if( ( xTaskInfo.eCurrentState != eBlocked ) ||
\r
659 ( strcmp( xTaskInfo.pcTaskName, "Tmr Svc" ) != 0 ) ||
\r
660 ( xTaskInfo.uxCurrentPriority != configTIMER_TASK_PRIORITY ) ||
\r
661 ( xTaskInfo.pxStackBase != uxTimerTaskStack ) ||
\r
662 ( xTaskInfo.xHandle != xTimerTaskHandle ) )
\r
664 pcStatusMessage = "Error: vTaskGetInfo() returned incorrect information about the timer task";
\r
667 /* Other tests that should only be performed once follow. The test task
\r
668 is not created on each iteration because to do so would cause the death
\r
669 task to report an error (too many tasks running). */
\r
670 if( xPerformedOneShotTests == pdFALSE )
\r
672 /* Don't run this part of the test again. */
\r
673 xPerformedOneShotTests = pdTRUE;
\r
675 /* Create a test task to use to test other eTaskStateGet() return values. */
\r
676 if( xTaskCreate( prvTestTask, "Test", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, &xTestTask ) == pdPASS )
\r
678 /* If this task is running, the test task must be in the ready state. */
\r
679 if( eTaskStateGet( xTestTask ) != eReady )
\r
681 pcStatusMessage = "Error: Returned test task state was incorrect 1";
\r
684 /* Now suspend the test task and check its state is reported correctly. */
\r
685 vTaskSuspend( xTestTask );
\r
686 if( eTaskStateGet( xTestTask ) != eSuspended )
\r
688 pcStatusMessage = "Error: Returned test task state was incorrect 2";
\r
691 /* Now delete the task and check its state is reported correctly. */
\r
692 vTaskDelete( xTestTask );
\r
693 if( eTaskStateGet( xTestTask ) != eDeleted )
\r
695 pcStatusMessage = "Error: Returned test task state was incorrect 3";
\r
700 /*-----------------------------------------------------------*/
\r
702 static void prvDemoQueueSpaceFunctions( void *pvParameters )
\r
704 QueueHandle_t xQueue = NULL;
\r
705 const unsigned portBASE_TYPE uxQueueLength = 10;
\r
706 unsigned portBASE_TYPE uxReturn, x;
\r
708 /* Remove compiler warnings. */
\r
709 ( void ) pvParameters;
\r
711 /* Create the queue that will be used. Nothing is actually going to be
\r
712 sent or received so the queue item size is set to 0. */
\r
713 xQueue = xQueueCreate( uxQueueLength, 0 );
\r
714 configASSERT( xQueue );
\r
718 for( x = 0; x < uxQueueLength; x++ )
\r
720 /* Ask how many messages are available... */
\r
721 uxReturn = uxQueueMessagesWaiting( xQueue );
\r
723 /* Check the number of messages being reported as being available
\r
724 is as expected, and force an assert if not. */
\r
725 if( uxReturn != x )
\r
727 /* xQueue cannot be NULL so this is deliberately causing an
\r
728 assert to be triggered as there is an error. */
\r
729 configASSERT( xQueue == NULL );
\r
732 /* Ask how many spaces remain in the queue... */
\r
733 uxReturn = uxQueueSpacesAvailable( xQueue );
\r
735 /* Check the number of spaces being reported as being available
\r
736 is as expected, and force an assert if not. */
\r
737 if( uxReturn != ( uxQueueLength - x ) )
\r
739 /* xQueue cannot be NULL so this is deliberately causing an
\r
740 assert to be triggered as there is an error. */
\r
741 configASSERT( xQueue == NULL );
\r
744 /* Fill one more space in the queue. */
\r
745 xQueueSendToBack( xQueue, NULL, 0 );
\r
748 /* Perform the same check while the queue is full. */
\r
749 uxReturn = uxQueueMessagesWaiting( xQueue );
\r
750 if( uxReturn != uxQueueLength )
\r
752 configASSERT( xQueue == NULL );
\r
755 uxReturn = uxQueueSpacesAvailable( xQueue );
\r
757 if( uxReturn != 0 )
\r
759 configASSERT( xQueue == NULL );
\r
762 /* The queue is full, start again. */
\r
763 xQueueReset( xQueue );
\r
765 #if( configUSE_PREEMPTION == 0 )
\r
770 /*-----------------------------------------------------------*/
\r
772 static void prvPermanentlyBlockingSemaphoreTask( void *pvParameters )
\r
774 SemaphoreHandle_t xSemaphore;
\r
776 /* Prevent compiler warning about unused parameter in the case that
\r
777 configASSERT() is not defined. */
\r
778 ( void ) pvParameters;
\r
780 /* This task should block on a semaphore, and never return. */
\r
781 xSemaphore = xSemaphoreCreateBinary();
\r
782 configASSERT( xSemaphore );
\r
784 xSemaphoreTake( xSemaphore, portMAX_DELAY );
\r
786 /* The above xSemaphoreTake() call should never return, force an assert if
\r
788 configASSERT( pvParameters != NULL );
\r
789 vTaskDelete( NULL );
\r
791 /*-----------------------------------------------------------*/
\r
793 static void prvPermanentlyBlockingNotificationTask( void *pvParameters )
\r
795 /* Prevent compiler warning about unused parameter in the case that
\r
796 configASSERT() is not defined. */
\r
797 ( void ) pvParameters;
\r
799 /* This task should block on a task notification, and never return. */
\r
800 ulTaskNotifyTake( pdTRUE, portMAX_DELAY );
\r
802 /* The above ulTaskNotifyTake() call should never return, force an assert
\r
804 configASSERT( pvParameters != NULL );
\r
805 vTaskDelete( NULL );
\r