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 "blocktim.h"
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102 #include "AbortDelay.h"
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103 #include "MessageBufferDemo.h"
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104 #include "StreamBufferDemo.h"
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105 #include "StreamBufferInterrupt.h"
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106 #include "MessageBufferAMP.h"
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108 /* Priorities at which the tasks are created. */
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109 #define mainCHECK_TASK_PRIORITY ( configMAX_PRIORITIES - 2 )
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110 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 1 )
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111 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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112 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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113 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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114 #define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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115 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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116 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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117 #define mainFLOP_TASK_PRIORITY ( tskIDLE_PRIORITY )
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118 #define mainQUEUE_OVERWRITE_PRIORITY ( tskIDLE_PRIORITY )
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120 #define mainTIMER_TEST_PERIOD ( 50 )
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122 /* Task function prototypes. */
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123 static void prvCheckTask( void *pvParameters );
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125 /* A task that is created from the idle task to test the functionality of
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126 eTaskStateGet(). */
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127 static void prvTestTask( void *pvParameters );
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130 * Called from the idle task hook function to demonstrate a few utility
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131 * functions that are not demonstrated by any of the standard demo tasks.
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133 static void prvDemonstrateTaskStateAndHandleGetFunctions( void );
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136 * Called from the idle task hook function to demonstrate the use of
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137 * xTimerPendFunctionCall() as xTimerPendFunctionCall() is not demonstrated by
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138 * any of the standard demo tasks.
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140 static void prvDemonstratePendingFunctionCall( void );
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143 * The function that is pended by prvDemonstratePendingFunctionCall().
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145 static void prvPendedFunction( void *pvParameter1, uint32_t ulParameter2 );
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148 * prvDemonstrateTimerQueryFunctions() is called from the idle task hook
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149 * function to demonstrate the use of functions that query information about a
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150 * software timer. prvTestTimerCallback() is the callback function for the
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151 * timer being queried.
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153 static void prvDemonstrateTimerQueryFunctions( void );
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154 static void prvTestTimerCallback( TimerHandle_t xTimer );
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157 * A task to demonstrate the use of the xQueueSpacesAvailable() function.
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159 static void prvDemoQueueSpaceFunctions( void *pvParameters );
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162 * Tasks that ensure indefinite delays are truly indefinite.
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164 static void prvPermanentlyBlockingSemaphoreTask( void *pvParameters );
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165 static void prvPermanentlyBlockingNotificationTask( void *pvParameters );
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167 /*-----------------------------------------------------------*/
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169 /* The variable into which error messages are latched. */
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170 static char *pcStatusMessage = "No errors";
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172 /* This semaphore is created purely to test using the vSemaphoreDelete() and
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173 semaphore tracing API functions. It has no other purpose. */
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174 static SemaphoreHandle_t xMutexToDelete = NULL;
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176 /*-----------------------------------------------------------*/
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178 int main_full( void )
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180 /* Start the check task as described at the top of this file. */
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181 xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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183 /* Create the standard demo tasks. */
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184 vStartTaskNotifyTask();
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185 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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186 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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187 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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188 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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189 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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190 vStartQueuePeekTasks();
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191 vStartMathTasks( mainFLOP_TASK_PRIORITY );
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192 vStartRecursiveMutexTasks();
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193 vStartCountingSemaphoreTasks();
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194 vStartDynamicPriorityTasks();
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195 vStartQueueSetTasks();
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196 vStartQueueOverwriteTask( mainQUEUE_OVERWRITE_PRIORITY );
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197 xTaskCreate( prvDemoQueueSpaceFunctions, "QSpace", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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198 vStartEventGroupTasks();
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199 vStartInterruptSemaphoreTasks();
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200 vStartQueueSetPollingTask();
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201 vCreateBlockTimeTasks();
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202 vCreateAbortDelayTasks();
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203 xTaskCreate( prvDemoQueueSpaceFunctions, "QSpace", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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204 xTaskCreate( prvPermanentlyBlockingSemaphoreTask, "BlockSem", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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205 xTaskCreate( prvPermanentlyBlockingNotificationTask, "BlockNoti", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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207 vStartMessageBufferTasks();
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208 vStartStreamBufferTasks();
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209 vStartStreamBufferInterruptDemo();
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210 vStartMessageBufferAMPTasks();
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212 #if( configUSE_PREEMPTION != 0 )
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214 /* Don't expect these tasks to pass when preemption is not used. */
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215 vStartTimerDemoTask( mainTIMER_TEST_PERIOD );
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219 /* The suicide tasks must be created last as they need to know how many
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220 tasks were running prior to their creation. This then allows them to
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221 ascertain whether or not the correct/expected number of tasks are running at
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223 vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
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225 /* Create the semaphore that will be deleted in the idle task hook. This
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226 is done purely to test the use of vSemaphoreDelete(). */
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227 xMutexToDelete = xSemaphoreCreateMutex();
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229 /* Start the scheduler itself. */
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230 vTaskStartScheduler();
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232 /* Should never get here unless there was not enough heap space to create
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233 the idle and other system tasks. */
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236 /*-----------------------------------------------------------*/
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238 static void prvCheckTask( void *pvParameters )
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240 TickType_t xNextWakeTime;
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241 const TickType_t xCycleFrequency = pdMS_TO_TICKS( 2500UL );
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243 /* Just to remove compiler warning. */
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244 ( void ) pvParameters;
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246 /* Initialise xNextWakeTime - this only needs to be done once. */
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247 xNextWakeTime = xTaskGetTickCount();
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251 /* Place this task in the blocked state until it is time to run again. */
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252 vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );
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254 /* Check the standard demo tasks are running without error. */
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255 #if( configUSE_PREEMPTION != 0 )
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257 /* These tasks are only created when preemption is used. */
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258 if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
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260 pcStatusMessage = "Error: TimerDemo";
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265 if( xAreStreamBufferTasksStillRunning() != pdTRUE )
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267 pcStatusMessage = "Error: StreamBuffer";
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269 else if( xAreMessageBufferTasksStillRunning() != pdTRUE )
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271 pcStatusMessage = "Error: MessageBuffer";
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273 else if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
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275 pcStatusMessage = "Error: Notification";
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277 else if( xAreInterruptSemaphoreTasksStillRunning() != pdTRUE )
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279 pcStatusMessage = "Error: IntSem";
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281 else if( xAreEventGroupTasksStillRunning() != pdTRUE )
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283 pcStatusMessage = "Error: EventGroup";
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285 else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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287 pcStatusMessage = "Error: IntMath";
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289 else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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291 pcStatusMessage = "Error: GenQueue";
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293 else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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295 pcStatusMessage = "Error: QueuePeek";
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297 else if( xAreBlockingQueuesStillRunning() != pdTRUE )
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299 pcStatusMessage = "Error: BlockQueue";
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301 else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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303 pcStatusMessage = "Error: SemTest";
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305 else if( xArePollingQueuesStillRunning() != pdTRUE )
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307 pcStatusMessage = "Error: PollQueue";
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309 else if( xAreMathsTaskStillRunning() != pdPASS )
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311 pcStatusMessage = "Error: Flop";
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313 else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
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315 pcStatusMessage = "Error: RecMutex";
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317 else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
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319 pcStatusMessage = "Error: CountSem";
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321 else if( xIsCreateTaskStillRunning() != pdTRUE )
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323 pcStatusMessage = "Error: Death";
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325 else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
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327 pcStatusMessage = "Error: Dynamic";
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329 else if( xAreQueueSetTasksStillRunning() != pdPASS )
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331 pcStatusMessage = "Error: Queue set";
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333 else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
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335 pcStatusMessage = "Error: Queue overwrite";
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337 else if( xAreQueueSetPollTasksStillRunning() != pdPASS )
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339 pcStatusMessage = "Error: Queue set polling";
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341 else if( xAreBlockTimeTestTasksStillRunning() != pdPASS )
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343 pcStatusMessage = "Error: Block time";
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345 else if( xAreAbortDelayTestTasksStillRunning() != pdPASS )
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347 pcStatusMessage = "Error: Abort delay";
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349 else if( xIsInterruptStreamBufferDemoStillRunning() != pdPASS )
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351 pcStatusMessage = "Error: Stream buffer interrupt";
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353 else if( xAreMessageBufferAMPTasksStillRunning() != pdPASS )
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355 pcStatusMessage = "Error: Message buffer AMP";
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358 #if( configSUPPORT_STATIC_ALLOCATION == 1 )
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359 else if( xAreStaticAllocationTasksStillRunning() != pdPASS )
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361 pcStatusMessage = "Error: Static allocation";
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363 #endif /* configSUPPORT_STATIC_ALLOCATION */
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365 /* This is the only task that uses stdout so its ok to call printf()
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367 printf( "%s - tick count %u - free heap %u - min free heap %u\r\n", pcStatusMessage,
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368 xTaskGetTickCount(),
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369 xPortGetFreeHeapSize(),
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370 xPortGetMinimumEverFreeHeapSize() );
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374 /*-----------------------------------------------------------*/
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376 static void prvTestTask( void *pvParameters )
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378 const unsigned long ulMSToSleep = 5;
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380 /* Just to remove compiler warnings. */
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381 ( void ) pvParameters;
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383 /* This task is just used to test the eTaskStateGet() function. It
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384 does not have anything to do. */
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387 /* Sleep to reduce CPU load, but don't sleep indefinitely in case there are
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388 tasks waiting to be terminated by the idle task. */
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389 Sleep( ulMSToSleep );
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392 /*-----------------------------------------------------------*/
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394 /* Called from vApplicationIdleHook(), which is defined in main.c. */
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395 void vFullDemoIdleFunction( void )
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397 const unsigned long ulMSToSleep = 15;
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400 /* Sleep to reduce CPU load, but don't sleep indefinitely in case there are
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401 tasks waiting to be terminated by the idle task. */
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402 Sleep( ulMSToSleep );
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404 /* Demonstrate a few utility functions that are not demonstrated by any of
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405 the standard demo tasks. */
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406 prvDemonstrateTaskStateAndHandleGetFunctions();
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408 /* Demonstrate the use of xTimerPendFunctionCall(), which is not
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409 demonstrated by any of the standard demo tasks. */
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410 prvDemonstratePendingFunctionCall();
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412 /* Demonstrate the use of functions that query information about a software
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414 prvDemonstrateTimerQueryFunctions();
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417 /* If xMutexToDelete has not already been deleted, then delete it now.
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418 This is done purely to demonstrate the use of, and test, the
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419 vSemaphoreDelete() macro. Care must be taken not to delete a semaphore
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420 that has tasks blocked on it. */
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421 if( xMutexToDelete != NULL )
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423 /* For test purposes, add the mutex to the registry, then remove it
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424 again, before it is deleted - checking its name is as expected before
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425 and after the assertion into the registry and its removal from the
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427 configASSERT( pcQueueGetName( xMutexToDelete ) == NULL );
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428 vQueueAddToRegistry( xMutexToDelete, "Test_Mutex" );
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429 configASSERT( strcmp( pcQueueGetName( xMutexToDelete ), "Test_Mutex" ) == 0 );
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430 vQueueUnregisterQueue( xMutexToDelete );
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431 configASSERT( pcQueueGetName( xMutexToDelete ) == NULL );
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433 vSemaphoreDelete( xMutexToDelete );
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434 xMutexToDelete = NULL;
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437 /* Exercise heap_5 a bit. The malloc failed hook will trap failed
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438 allocations so there is no need to test here. */
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439 pvAllocated = pvPortMalloc( ( rand() % 500 ) + 1 );
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440 vPortFree( pvAllocated );
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442 /*-----------------------------------------------------------*/
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444 /* Called by vApplicationTickHook(), which is defined in main.c. */
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445 void vFullDemoTickHookFunction( void )
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447 TaskHandle_t xTimerTask;
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449 /* Call the periodic timer test, which tests the timer API functions that
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450 can be called from an ISR. */
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451 #if( configUSE_PREEMPTION != 0 )
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453 /* Only created when preemption is used. */
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454 vTimerPeriodicISRTests();
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458 /* Call the periodic queue overwrite from ISR demo. */
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459 vQueueOverwritePeriodicISRDemo();
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461 /* Write to a queue that is in use as part of the queue set demo to
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462 demonstrate using queue sets from an ISR. */
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463 vQueueSetAccessQueueSetFromISR();
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464 vQueueSetPollingInterruptAccess();
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466 /* Exercise event groups from interrupts. */
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467 vPeriodicEventGroupsProcessing();
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469 /* Exercise giving mutexes from an interrupt. */
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470 vInterruptSemaphorePeriodicTest();
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472 /* Exercise using task notifications from an interrupt. */
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473 xNotifyTaskFromISR();
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475 /* Writes to stream buffer byte by byte to test the stream buffer trigger
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476 level functionality. */
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477 vPeriodicStreamBufferProcessing();
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479 /* Writes a string to a string buffer four bytes at a time to demonstrate
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480 a stream being sent from an interrupt to a task. */
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481 vBasicStreamBufferSendFromISR();
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483 /* For code coverage purposes. */
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484 xTimerTask = xTimerGetTimerDaemonTaskHandle();
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485 configASSERT( uxTaskPriorityGetFromISR( xTimerTask ) == configTIMER_TASK_PRIORITY );
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486 ( void ) xTimerTask; /* In case configASSERT() is not defined. */
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488 /*-----------------------------------------------------------*/
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490 static void prvPendedFunction( void *pvParameter1, uint32_t ulParameter2 )
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492 static uint32_t ulLastParameter1 = 1000UL, ulLastParameter2 = 0UL;
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493 uint32_t ulParameter1;
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495 ulParameter1 = ( uint32_t ) pvParameter1;
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497 /* Ensure the parameters are as expected. */
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498 configASSERT( ulParameter1 == ( ulLastParameter1 + 1 ) );
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499 configASSERT( ulParameter2 == ( ulLastParameter2 + 1 ) );
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501 /* Remember the parameters for the next time the function is called. */
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502 ulLastParameter1 = ulParameter1;
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503 ulLastParameter2 = ulParameter2;
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505 /* Remove compiler warnings in case configASSERT() is not defined. */
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506 ( void ) ulLastParameter1;
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507 ( void ) ulLastParameter2;
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509 /*-----------------------------------------------------------*/
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511 static void prvTestTimerCallback( TimerHandle_t xTimer )
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513 /* This is the callback function for the timer accessed by
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514 prvDemonstrateTimerQueryFunctions(). The callback does not do anything. */
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517 /*-----------------------------------------------------------*/
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519 static void prvDemonstrateTimerQueryFunctions( void )
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521 static TimerHandle_t xTimer = NULL;
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522 const char *pcTimerName = "TestTimer";
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523 volatile TickType_t xExpiryTime;
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524 const TickType_t xDontBlock = 0;
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526 if( xTimer == NULL )
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528 xTimer = xTimerCreate( pcTimerName, portMAX_DELAY, pdTRUE, NULL, prvTestTimerCallback );
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530 if( xTimer != NULL )
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532 /* Called from the idle task so a block time must not be
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534 xTimerStart( xTimer, xDontBlock );
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538 if( xTimer != NULL )
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540 /* Demonstrate querying a timer's name. */
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541 configASSERT( strcmp( pcTimerGetName( xTimer ), pcTimerName ) == 0 );
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543 /* Demonstrate querying a timer's period. */
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544 configASSERT( xTimerGetPeriod( xTimer ) == portMAX_DELAY );
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546 /* Demonstrate querying a timer's next expiry time, although nothing is
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547 done with the returned value. Note if the expiry time is less than the
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548 maximum tick count then the expiry time has overflowed from the current
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549 time. In this case the expiry time was set to portMAX_DELAY, so it is
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550 expected to be less than the current time until the current time has
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551 itself overflowed. */
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552 xExpiryTime = xTimerGetExpiryTime( xTimer );
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553 ( void ) xExpiryTime;
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556 /*-----------------------------------------------------------*/
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558 static void prvDemonstratePendingFunctionCall( void )
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560 static uint32_t ulParameter1 = 1000UL, ulParameter2 = 0UL;
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561 const TickType_t xDontBlock = 0; /* This is called from the idle task so must *not* attempt to block. */
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563 /* prvPendedFunction() just expects the parameters to be incremented by one
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564 each time it is called. */
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568 /* Pend the function call, sending the parameters. */
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569 xTimerPendFunctionCall( prvPendedFunction, ( void * ) ulParameter1, ulParameter2, xDontBlock );
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571 /*-----------------------------------------------------------*/
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573 static void prvDemonstrateTaskStateAndHandleGetFunctions( void )
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575 TaskHandle_t xIdleTaskHandle, xTimerTaskHandle;
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577 static portBASE_TYPE xPerformedOneShotTests = pdFALSE;
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578 TaskHandle_t xTestTask;
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579 TaskStatus_t xTaskInfo;
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581 /* Demonstrate the use of the xTimerGetTimerDaemonTaskHandle() and
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582 xTaskGetIdleTaskHandle() functions. Also try using the function that sets
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583 the task number. */
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584 xIdleTaskHandle = xTaskGetIdleTaskHandle();
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585 xTimerTaskHandle = xTimerGetTimerDaemonTaskHandle();
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587 /* This is the idle hook, so the current task handle should equal the
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588 returned idle task handle. */
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589 if( xTaskGetCurrentTaskHandle() != xIdleTaskHandle )
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591 pcStatusMessage = "Error: Returned idle task handle was incorrect";
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594 /* Check the same handle is obtained using the idle task's name. First try
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595 with the wrong name, then the right name. */
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596 if( xTaskGetHandle( "Idle" ) == xIdleTaskHandle )
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598 pcStatusMessage = "Error: Returned handle for name Idle was incorrect";
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601 if( xTaskGetHandle( "IDLE" ) != xIdleTaskHandle )
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603 pcStatusMessage = "Error: Returned handle for name Idle was incorrect";
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606 /* Check the timer task handle was returned correctly. */
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607 pcTaskName = pcTaskGetName( xTimerTaskHandle );
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608 if( strcmp( pcTaskName, "Tmr Svc" ) != 0 )
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610 pcStatusMessage = "Error: Returned timer task handle was incorrect";
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613 if( xTaskGetHandle( "Tmr Svc" ) != xTimerTaskHandle )
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615 pcStatusMessage = "Error: Returned handle for name Tmr Svc was incorrect";
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618 /* This task is running, make sure it's state is returned as running. */
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619 if( eTaskStateGet( xIdleTaskHandle ) != eRunning )
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621 pcStatusMessage = "Error: Returned idle task state was incorrect";
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624 /* If this task is running, then the timer task must be blocked. */
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625 if( eTaskStateGet( xTimerTaskHandle ) != eBlocked )
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627 pcStatusMessage = "Error: Returned timer task state was incorrect";
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630 /* Also with the vTaskGetInfo() function. */
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631 vTaskGetInfo( xTimerTaskHandle, /* The task being queried. */
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632 &xTaskInfo, /* The structure into which information on the task will be written. */
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633 pdTRUE, /* Include the task's high watermark in the structure. */
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634 eInvalid ); /* Include the task state in the structure. */
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636 /* Check the information returned by vTaskGetInfo() is as expected. */
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637 if( ( xTaskInfo.eCurrentState != eBlocked ) ||
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638 ( strcmp( xTaskInfo.pcTaskName, "Tmr Svc" ) != 0 ) ||
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639 ( xTaskInfo.uxCurrentPriority != configTIMER_TASK_PRIORITY ) ||
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640 ( xTaskInfo.xHandle != xTimerTaskHandle ) )
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642 pcStatusMessage = "Error: vTaskGetInfo() returned incorrect information about the timer task";
\r
645 /* Other tests that should only be performed once follow. The test task
\r
646 is not created on each iteration because to do so would cause the death
\r
647 task to report an error (too many tasks running). */
\r
648 if( xPerformedOneShotTests == pdFALSE )
\r
650 /* Don't run this part of the test again. */
\r
651 xPerformedOneShotTests = pdTRUE;
\r
653 /* Create a test task to use to test other eTaskStateGet() return values. */
\r
654 if( xTaskCreate( prvTestTask, "Test", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, &xTestTask ) == pdPASS )
\r
656 /* If this task is running, the test task must be in the ready state. */
\r
657 if( eTaskStateGet( xTestTask ) != eReady )
\r
659 pcStatusMessage = "Error: Returned test task state was incorrect 1";
\r
662 /* Now suspend the test task and check its state is reported correctly. */
\r
663 vTaskSuspend( xTestTask );
\r
664 if( eTaskStateGet( xTestTask ) != eSuspended )
\r
666 pcStatusMessage = "Error: Returned test task state was incorrect 2";
\r
669 /* Now delete the task and check its state is reported correctly. */
\r
670 vTaskDelete( xTestTask );
\r
671 if( eTaskStateGet( xTestTask ) != eDeleted )
\r
673 pcStatusMessage = "Error: Returned test task state was incorrect 3";
\r
678 /*-----------------------------------------------------------*/
\r
680 static void prvDemoQueueSpaceFunctions( void *pvParameters )
\r
682 QueueHandle_t xQueue = NULL;
\r
683 const unsigned portBASE_TYPE uxQueueLength = 10;
\r
684 unsigned portBASE_TYPE uxReturn, x;
\r
686 /* Remove compiler warnings. */
\r
687 ( void ) pvParameters;
\r
689 /* Create the queue that will be used. Nothing is actually going to be
\r
690 sent or received so the queue item size is set to 0. */
\r
691 xQueue = xQueueCreate( uxQueueLength, 0 );
\r
692 configASSERT( xQueue );
\r
696 for( x = 0; x < uxQueueLength; x++ )
\r
698 /* Ask how many messages are available... */
\r
699 uxReturn = uxQueueMessagesWaiting( xQueue );
\r
701 /* Check the number of messages being reported as being available
\r
702 is as expected, and force an assert if not. */
\r
703 if( uxReturn != x )
\r
705 /* xQueue cannot be NULL so this is deliberately causing an
\r
706 assert to be triggered as there is an error. */
\r
707 configASSERT( xQueue == NULL );
\r
710 /* Ask how many spaces remain in the queue... */
\r
711 uxReturn = uxQueueSpacesAvailable( xQueue );
\r
713 /* Check the number of spaces being reported as being available
\r
714 is as expected, and force an assert if not. */
\r
715 if( uxReturn != ( uxQueueLength - x ) )
\r
717 /* xQueue cannot be NULL so this is deliberately causing an
\r
718 assert to be triggered as there is an error. */
\r
719 configASSERT( xQueue == NULL );
\r
722 /* Fill one more space in the queue. */
\r
723 xQueueSendToBack( xQueue, NULL, 0 );
\r
726 /* Perform the same check while the queue is full. */
\r
727 uxReturn = uxQueueMessagesWaiting( xQueue );
\r
728 if( uxReturn != uxQueueLength )
\r
730 configASSERT( xQueue == NULL );
\r
733 uxReturn = uxQueueSpacesAvailable( xQueue );
\r
735 if( uxReturn != 0 )
\r
737 configASSERT( xQueue == NULL );
\r
740 /* The queue is full, start again. */
\r
741 xQueueReset( xQueue );
\r
743 #if( configUSE_PREEMPTION == 0 )
\r
748 /*-----------------------------------------------------------*/
\r
750 static void prvPermanentlyBlockingSemaphoreTask( void *pvParameters )
\r
752 SemaphoreHandle_t xSemaphore;
\r
754 /* Prevent compiler warning about unused parameter in the case that
\r
755 configASSERT() is not defined. */
\r
756 ( void ) pvParameters;
\r
758 /* This task should block on a semaphore, and never return. */
\r
759 xSemaphore = xSemaphoreCreateBinary();
\r
760 configASSERT( xSemaphore );
\r
762 xSemaphoreTake( xSemaphore, portMAX_DELAY );
\r
764 /* The above xSemaphoreTake() call should never return, force an assert if
\r
766 configASSERT( pvParameters != NULL );
\r
767 vTaskDelete( NULL );
\r
769 /*-----------------------------------------------------------*/
\r
771 static void prvPermanentlyBlockingNotificationTask( void *pvParameters )
\r
773 /* Prevent compiler warning about unused parameter in the case that
\r
774 configASSERT() is not defined. */
\r
775 ( void ) pvParameters;
\r
777 /* This task should block on a task notification, and never return. */
\r
778 ulTaskNotifyTake( pdTRUE, portMAX_DELAY );
\r
780 /* The above ulTaskNotifyTake() call should never return, force an assert
\r
782 configASSERT( pvParameters != NULL );
\r
783 vTaskDelete( NULL );
\r