2 FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 This file is part of the FreeRTOS distribution.
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9 FreeRTOS is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License (version 2) as published by the
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11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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13 >>! NOTE: The modification to the GPL is included to allow you to !<<
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14 >>! distribute a combined work that includes FreeRTOS without being !<<
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15 >>! obliged to provide the source code for proprietary components !<<
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16 >>! outside of the FreeRTOS kernel. !<<
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18 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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19 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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20 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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21 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * Having a problem? Start by reading the FAQ "My application does *
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28 * not run, what could be wrong?". Have you defined configASSERT()? *
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30 * http://www.FreeRTOS.org/FAQHelp.html *
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32 ***************************************************************************
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34 ***************************************************************************
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36 * FreeRTOS provides completely free yet professionally developed, *
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37 * robust, strictly quality controlled, supported, and cross *
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38 * platform software that is more than just the market leader, it *
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39 * is the industry's de facto standard. *
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41 * Help yourself get started quickly while simultaneously helping *
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42 * to support the FreeRTOS project by purchasing a FreeRTOS *
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43 * tutorial book, reference manual, or both: *
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44 * http://www.FreeRTOS.org/Documentation *
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46 ***************************************************************************
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48 ***************************************************************************
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50 * Investing in training allows your team to be as productive as *
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51 * possible as early as possible, lowering your overall development *
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52 * cost, and enabling you to bring a more robust product to market *
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53 * earlier than would otherwise be possible. Richard Barry is both *
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54 * the architect and key author of FreeRTOS, and so also the world's *
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55 * leading authority on what is the world's most popular real time *
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56 * kernel for deeply embedded MCU designs. Obtaining your training *
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57 * from Richard ensures your team will gain directly from his in-depth *
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58 * product knowledge and years of usage experience. Contact Real Time *
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59 * Engineers Ltd to enquire about the FreeRTOS Masterclass, presented *
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60 * by Richard Barry: http://www.FreeRTOS.org/contact
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62 ***************************************************************************
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64 ***************************************************************************
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66 * You are receiving this top quality software for free. Please play *
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67 * fair and reciprocate by reporting any suspected issues and *
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68 * participating in the community forum: *
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69 * http://www.FreeRTOS.org/support *
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73 ***************************************************************************
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75 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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76 license and Real Time Engineers Ltd. contact details.
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78 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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79 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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80 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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82 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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83 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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85 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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86 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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87 licenses offer ticketed support, indemnification and commercial middleware.
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89 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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90 engineered and independently SIL3 certified version for use in safety and
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91 mission critical applications that require provable dependability.
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98 * Creates all the demo application tasks, then starts the scheduler. The WEB
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99 * documentation provides more details of the standard demo application tasks
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100 * (which just exist to test the kernel port and provide an example of how to use
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101 * each FreeRTOS API function).
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103 * In addition to the standard demo tasks, the following tasks and tests are
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104 * defined and/or created within this file:
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106 * "Check" hook - This only executes fully every five seconds from the tick
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107 * hook. Its main function is to check that all the standard demo tasks are
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108 * still operational. The status can be viewed using on the Task Stats page
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109 * served by the WEB server.
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111 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
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112 * processing is performed in this task.
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114 * "USB" task - Enumerates the USB device as a CDC class, then echoes back all
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115 * received characters with a configurable offset (for example, if the offset
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116 * is 1 and 'A' is received then 'B' will be sent back). A dumb terminal such
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117 * as Hyperterminal can be used to talk to the USB task.
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120 /* Standard includes. */
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123 /* Scheduler includes. */
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124 #include "FreeRTOS.h"
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127 /* Demo app includes. */
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128 #include "BlockQ.h"
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129 #include "integer.h"
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130 #include "blocktim.h"
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132 #include "partest.h"
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133 #include "semtest.h"
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135 #include "GenQTest.h"
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137 #include "recmutex.h"
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139 /*-----------------------------------------------------------*/
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141 /* The time between cycles of the 'check' functionality (defined within the
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143 #define mainCHECK_DELAY ( ( TickType_t ) 5000 / portTICK_PERIOD_MS )
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145 /* Task priorities. */
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146 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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147 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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148 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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149 #define mainUIP_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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150 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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151 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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152 #define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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154 /* The WEB server has a larger stack as it utilises stack hungry string
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155 handling library calls. */
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156 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 4 )
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158 /* The message displayed by the WEB server when all tasks are executing
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159 without an error being reported. */
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160 #define mainPASS_STATUS_MESSAGE "All tasks are executing without error."
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162 /* Bit definitions. */
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163 #define PCONP_PCGPIO 0x00008000
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164 #define PLLFEED_FEED1 0x000000AA
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165 #define PLLFEED_FEED2 0x00000055
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166 /*-----------------------------------------------------------*/
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169 * Configure the hardware for the demo.
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171 static void prvSetupHardware( void );
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174 * The task that handles the uIP stack. All TCP/IP processing is performed in
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177 extern void vuIP_Task( void *pvParameters );
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180 * The task that handles the USB stack.
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182 extern void vUSBTask( void *pvParameters );
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185 * Simply returns the current status message for display on served WEB pages.
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187 char *pcGetTaskStatusMessage( void );
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189 /*-----------------------------------------------------------*/
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191 /* Holds the status message displayed by the WEB server. */
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192 static char *pcStatusMessage = mainPASS_STATUS_MESSAGE;
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194 /*-----------------------------------------------------------*/
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198 char cIPAddress[ 16 ]; /* Enough space for "xxx.xxx.xxx.xxx\0". */
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200 /* Configure the hardware for use by this demo. */
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201 prvSetupHardware();
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203 /* Start the standard demo tasks. These are just here to exercise the
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204 kernel port and provide examples of how the FreeRTOS API can be used. */
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205 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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206 vCreateBlockTimeTasks();
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207 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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208 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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209 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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210 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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211 vStartQueuePeekTasks();
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212 vStartRecursiveMutexTasks();
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213 vStartLEDFlashTasks( mainFLASH_TASK_PRIORITY );
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215 /* Create the USB task. */
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216 xTaskCreate( vUSBTask, "USB", configMINIMAL_STACK_SIZE, ( void * ) NULL, tskIDLE_PRIORITY, NULL );
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218 /* Display the IP address, then create the uIP task. The WEB server runs
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219 in this task. --- Due to tool changes since this demo was created the LCD
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221 LCDdriver_initialisation();
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222 LCD_PrintString( 5, 10, "FreeRTOS.org", 14, COLOR_GREEN);
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223 sprintf( cIPAddress, "%d.%d.%d.%d", configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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224 LCD_PrintString( 5, 30, cIPAddress, 14, COLOR_RED);
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225 xTaskCreate( vuIP_Task, "uIP", mainBASIC_WEB_STACK_SIZE, ( void * ) NULL, mainUIP_TASK_PRIORITY, NULL ); */
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227 /* Start the scheduler. */
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228 vTaskStartScheduler();
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230 /* Will only get here if there was insufficient memory to create the idle
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231 task. The idle task is created within vTaskStartScheduler(). */
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234 /*-----------------------------------------------------------*/
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236 void vApplicationTickHook( void )
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238 static unsigned long ulTicksSinceLastDisplay = 0;
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240 /* Called from every tick interrupt as described in the comments at the top
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243 Have enough ticks passed to make it time to perform our health status
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245 ulTicksSinceLastDisplay++;
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246 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
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248 /* Reset the counter so these checks run again in mainCHECK_DELAY
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250 ulTicksSinceLastDisplay = 0;
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252 /* Has an error been found in any task? */
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253 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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255 pcStatusMessage = "An error has been detected in the Generic Queue test/demo.";
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257 else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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259 pcStatusMessage = "An error has been detected in the Peek Queue test/demo.";
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261 else if( xAreBlockingQueuesStillRunning() != pdTRUE )
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263 pcStatusMessage = "An error has been detected in the Block Queue test/demo.";
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265 else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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267 pcStatusMessage = "An error has been detected in the Block Time test/demo.";
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269 else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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271 pcStatusMessage = "An error has been detected in the Semaphore test/demo.";
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273 else if( xArePollingQueuesStillRunning() != pdTRUE )
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275 pcStatusMessage = "An error has been detected in the Poll Queue test/demo.";
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277 else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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279 pcStatusMessage = "An error has been detected in the Int Math test/demo.";
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281 else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
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283 pcStatusMessage = "An error has been detected in the Mutex test/demo.";
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287 /*-----------------------------------------------------------*/
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289 char *pcGetTaskStatusMessage( void )
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291 /* Not bothered about a critical section here. */
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292 return pcStatusMessage;
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294 /*-----------------------------------------------------------*/
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296 void prvSetupHardware( void )
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298 /* Disable peripherals power. */
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301 /* Enable GPIO power. */
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302 LPC_SC->PCONP = PCONP_PCGPIO;
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304 /* Disable TPIU. */
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305 LPC_PINCON->PINSEL10 = 0;
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307 if ( LPC_SC->PLL0STAT & ( 1 << 25 ) )
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309 /* Enable PLL, disconnected. */
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310 LPC_SC->PLL0CON = 1;
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311 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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312 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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315 /* Disable PLL, disconnected. */
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316 LPC_SC->PLL0CON = 0;
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317 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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318 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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320 /* Enable main OSC. */
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321 LPC_SC->SCS |= 0x20;
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322 while( !( LPC_SC->SCS & 0x40 ) );
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324 /* select main OSC, 12MHz, as the PLL clock source. */
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325 LPC_SC->CLKSRCSEL = 0x1;
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327 LPC_SC->PLL0CFG = 0x20031;
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328 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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329 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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331 /* Enable PLL, disconnected. */
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332 LPC_SC->PLL0CON = 1;
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333 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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334 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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336 /* Set clock divider. */
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337 LPC_SC->CCLKCFG = 0x03;
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339 /* Configure flash accelerator. */
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340 LPC_SC->FLASHCFG = 0x403a;
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342 /* Check lock bit status. */
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343 while( ( ( LPC_SC->PLL0STAT & ( 1 << 26 ) ) == 0 ) );
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345 /* Enable and connect. */
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346 LPC_SC->PLL0CON = 3;
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347 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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348 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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349 while( ( ( LPC_SC->PLL0STAT & ( 1 << 25 ) ) == 0 ) );
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354 /* Configure the clock for the USB. */
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356 if( LPC_SC->PLL1STAT & ( 1 << 9 ) )
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358 /* Enable PLL, disconnected. */
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359 LPC_SC->PLL1CON = 1;
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360 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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361 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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364 /* Disable PLL, disconnected. */
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365 LPC_SC->PLL1CON = 0;
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366 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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367 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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369 LPC_SC->PLL1CFG = 0x23;
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370 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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371 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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373 /* Enable PLL, disconnected. */
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374 LPC_SC->PLL1CON = 1;
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375 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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376 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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377 while( ( ( LPC_SC->PLL1STAT & ( 1 << 10 ) ) == 0 ) );
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379 /* Enable and connect. */
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380 LPC_SC->PLL1CON = 3;
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381 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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382 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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383 while( ( ( LPC_SC->PLL1STAT & ( 1 << 9 ) ) == 0 ) );
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385 /* Setup the peripheral bus to be the same as the PLL output (64 MHz). */
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386 LPC_SC->PCLKSEL0 = 0x05555555;
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388 /* Configure the LEDs. */
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389 vParTestInitialise();
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391 /*-----------------------------------------------------------*/
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393 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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395 /* This function will get called if a task overflows its stack. */
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398 ( void ) pcTaskName;
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402 /*-----------------------------------------------------------*/
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404 void vConfigureTimerForRunTimeStats( void )
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406 const unsigned long TCR_COUNT_RESET = 2, CTCR_CTM_TIMER = 0x00, TCR_COUNT_ENABLE = 0x01;
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408 /* This function configures a timer that is used as the time base when
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409 collecting run time statistical information - basically the percentage
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410 of CPU time that each task is utilising. It is called automatically when
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411 the scheduler is started (assuming configGENERATE_RUN_TIME_STATS is set
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414 /* Power up and feed the timer. */
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415 LPC_SC->PCONP |= 0x02UL;
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416 LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & (~(0x3<<2))) | (0x01 << 2);
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418 /* Reset Timer 0 */
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419 LPC_TIM0->TCR = TCR_COUNT_RESET;
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421 /* Just count up. */
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422 LPC_TIM0->CTCR = CTCR_CTM_TIMER;
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424 /* Prescale to a frequency that is good enough to get a decent resolution,
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425 but not too fast so as to overflow all the time. */
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426 LPC_TIM0->PR = ( configCPU_CLOCK_HZ / 10000UL ) - 1UL;
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428 /* Start the counter. */
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429 LPC_TIM0->TCR = TCR_COUNT_ENABLE;
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431 /*-----------------------------------------------------------*/
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