2 FreeRTOS V8.0.0:rc1 - 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 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to distribute
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28 >>! a combined work that includes FreeRTOS without being obliged to provide
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29 >>! the source code for proprietary components outside of the FreeRTOS
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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68 * Creates all the demo application tasks, then starts the scheduler. The WEB
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69 * documentation provides more details of the standard demo application tasks
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70 * (which just exist to test the kernel port and provide an example of how to use
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71 * each FreeRTOS API function).
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73 * In addition to the standard demo tasks, the following tasks and tests are
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74 * defined and/or created within this file:
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76 * "Check" hook - This only executes fully every five seconds from the tick
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77 * hook. Its main function is to check that all the standard demo tasks are
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78 * still operational. The status can be viewed using on the Task Stats page
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79 * served by the WEB server.
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81 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
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82 * processing is performed in this task.
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84 * "USB" task - Enumerates the USB device as a CDC class, then echoes back all
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85 * received characters with a configurable offset (for example, if the offset
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86 * is 1 and 'A' is received then 'B' will be sent back). A dumb terminal such
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87 * as Hyperterminal can be used to talk to the USB task.
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90 /* Standard includes. */
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93 /* Scheduler includes. */
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94 #include "FreeRTOS.h"
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97 /* Demo app includes. */
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99 #include "integer.h"
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100 #include "blocktim.h"
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102 #include "partest.h"
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103 #include "semtest.h"
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105 #include "GenQTest.h"
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107 #include "recmutex.h"
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109 /* Red Suite includes. */
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110 #include "lcd_driver.h"
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113 /*-----------------------------------------------------------*/
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115 /* The time between cycles of the 'check' functionality (defined within the
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117 #define mainCHECK_DELAY ( ( TickType_t ) 5000 / portTICK_PERIOD_MS )
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119 /* Task priorities. */
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120 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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121 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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122 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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123 #define mainUIP_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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124 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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125 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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126 #define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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128 /* The WEB server has a larger stack as it utilises stack hungry string
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129 handling library calls. */
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130 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 4 )
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132 /* The message displayed by the WEB server when all tasks are executing
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133 without an error being reported. */
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134 #define mainPASS_STATUS_MESSAGE "All tasks are executing without error."
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136 /* Bit definitions. */
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137 #define PCONP_PCGPIO 0x00008000
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138 #define PLLFEED_FEED1 0x000000AA
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139 #define PLLFEED_FEED2 0x00000055
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140 /*-----------------------------------------------------------*/
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143 * Configure the hardware for the demo.
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145 static void prvSetupHardware( void );
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148 * The task that handles the uIP stack. All TCP/IP processing is performed in
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151 extern void vuIP_Task( void *pvParameters );
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154 * The task that handles the USB stack.
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156 extern void vUSBTask( void *pvParameters );
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159 * Simply returns the current status message for display on served WEB pages.
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161 char *pcGetTaskStatusMessage( void );
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163 /*-----------------------------------------------------------*/
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165 /* Holds the status message displayed by the WEB server. */
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166 static char *pcStatusMessage = mainPASS_STATUS_MESSAGE;
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168 /*-----------------------------------------------------------*/
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172 char cIPAddress[ 16 ]; /* Enough space for "xxx.xxx.xxx.xxx\0". */
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174 /* Configure the hardware for use by this demo. */
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175 prvSetupHardware();
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177 /* Start the standard demo tasks. These are just here to exercise the
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178 kernel port and provide examples of how the FreeRTOS API can be used. */
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179 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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180 vCreateBlockTimeTasks();
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181 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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182 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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183 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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184 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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185 vStartQueuePeekTasks();
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186 vStartRecursiveMutexTasks();
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187 vStartLEDFlashTasks( mainFLASH_TASK_PRIORITY );
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189 /* Create the USB task. */
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190 xTaskCreate( vUSBTask, "USB", configMINIMAL_STACK_SIZE, ( void * ) NULL, tskIDLE_PRIORITY, NULL );
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192 /* Display the IP address, then create the uIP task. The WEB server runs
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194 LCDdriver_initialisation();
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195 LCD_PrintString( 5, 10, "FreeRTOS.org", 14, COLOR_GREEN);
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196 sprintf( cIPAddress, "%d.%d.%d.%d", configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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197 LCD_PrintString( 5, 30, cIPAddress, 14, COLOR_RED);
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198 xTaskCreate( vuIP_Task, "uIP", mainBASIC_WEB_STACK_SIZE, ( void * ) NULL, mainUIP_TASK_PRIORITY, NULL );
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200 /* Start the scheduler. */
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201 vTaskStartScheduler();
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203 /* Will only get here if there was insufficient memory to create the idle
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204 task. The idle task is created within vTaskStartScheduler(). */
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207 /*-----------------------------------------------------------*/
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209 void vApplicationTickHook( void )
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211 static unsigned long ulTicksSinceLastDisplay = 0;
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213 /* Called from every tick interrupt as described in the comments at the top
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216 Have enough ticks passed to make it time to perform our health status
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218 ulTicksSinceLastDisplay++;
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219 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
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221 /* Reset the counter so these checks run again in mainCHECK_DELAY
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223 ulTicksSinceLastDisplay = 0;
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225 /* Has an error been found in any task? */
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226 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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228 pcStatusMessage = "An error has been detected in the Generic Queue test/demo.";
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230 else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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232 pcStatusMessage = "An error has been detected in the Peek Queue test/demo.";
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234 else if( xAreBlockingQueuesStillRunning() != pdTRUE )
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236 pcStatusMessage = "An error has been detected in the Block Queue test/demo.";
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238 else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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240 pcStatusMessage = "An error has been detected in the Block Time test/demo.";
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242 else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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244 pcStatusMessage = "An error has been detected in the Semaphore test/demo.";
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246 else if( xArePollingQueuesStillRunning() != pdTRUE )
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248 pcStatusMessage = "An error has been detected in the Poll Queue test/demo.";
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250 else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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252 pcStatusMessage = "An error has been detected in the Int Math test/demo.";
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254 else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
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256 pcStatusMessage = "An error has been detected in the Mutex test/demo.";
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260 /*-----------------------------------------------------------*/
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262 char *pcGetTaskStatusMessage( void )
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264 /* Not bothered about a critical section here. */
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265 return pcStatusMessage;
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267 /*-----------------------------------------------------------*/
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269 void prvSetupHardware( void )
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271 /* Disable peripherals power. */
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274 /* Enable GPIO power. */
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275 LPC_SC->PCONP = PCONP_PCGPIO;
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277 /* Disable TPIU. */
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278 LPC_PINCON->PINSEL10 = 0;
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280 if ( LPC_SC->PLL0STAT & ( 1 << 25 ) )
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282 /* Enable PLL, disconnected. */
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283 LPC_SC->PLL0CON = 1;
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284 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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285 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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288 /* Disable PLL, disconnected. */
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289 LPC_SC->PLL0CON = 0;
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290 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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291 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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293 /* Enable main OSC. */
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294 LPC_SC->SCS |= 0x20;
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295 while( !( LPC_SC->SCS & 0x40 ) );
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297 /* select main OSC, 12MHz, as the PLL clock source. */
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298 LPC_SC->CLKSRCSEL = 0x1;
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300 LPC_SC->PLL0CFG = 0x20031;
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301 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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302 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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304 /* Enable PLL, disconnected. */
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305 LPC_SC->PLL0CON = 1;
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306 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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307 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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309 /* Set clock divider. */
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310 LPC_SC->CCLKCFG = 0x03;
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312 /* Configure flash accelerator. */
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313 LPC_SC->FLASHCFG = 0x403a;
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315 /* Check lock bit status. */
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316 while( ( ( LPC_SC->PLL0STAT & ( 1 << 26 ) ) == 0 ) );
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318 /* Enable and connect. */
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319 LPC_SC->PLL0CON = 3;
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320 LPC_SC->PLL0FEED = PLLFEED_FEED1;
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321 LPC_SC->PLL0FEED = PLLFEED_FEED2;
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322 while( ( ( LPC_SC->PLL0STAT & ( 1 << 25 ) ) == 0 ) );
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327 /* Configure the clock for the USB. */
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329 if( LPC_SC->PLL1STAT & ( 1 << 9 ) )
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331 /* Enable PLL, disconnected. */
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332 LPC_SC->PLL1CON = 1;
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333 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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334 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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337 /* Disable PLL, disconnected. */
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338 LPC_SC->PLL1CON = 0;
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339 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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340 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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342 LPC_SC->PLL1CFG = 0x23;
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343 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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344 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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346 /* Enable PLL, disconnected. */
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347 LPC_SC->PLL1CON = 1;
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348 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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349 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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350 while( ( ( LPC_SC->PLL1STAT & ( 1 << 10 ) ) == 0 ) );
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352 /* Enable and connect. */
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353 LPC_SC->PLL1CON = 3;
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354 LPC_SC->PLL1FEED = PLLFEED_FEED1;
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355 LPC_SC->PLL1FEED = PLLFEED_FEED2;
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356 while( ( ( LPC_SC->PLL1STAT & ( 1 << 9 ) ) == 0 ) );
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358 /* Setup the peripheral bus to be the same as the PLL output (64 MHz). */
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359 LPC_SC->PCLKSEL0 = 0x05555555;
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361 /* Configure the LEDs. */
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362 vParTestInitialise();
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364 /*-----------------------------------------------------------*/
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366 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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368 /* This function will get called if a task overflows its stack. */
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371 ( void ) pcTaskName;
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375 /*-----------------------------------------------------------*/
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377 void vConfigureTimerForRunTimeStats( void )
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379 const unsigned long TCR_COUNT_RESET = 2, CTCR_CTM_TIMER = 0x00, TCR_COUNT_ENABLE = 0x01;
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381 /* This function configures a timer that is used as the time base when
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382 collecting run time statistical information - basically the percentage
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383 of CPU time that each task is utilising. It is called automatically when
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384 the scheduler is started (assuming configGENERATE_RUN_TIME_STATS is set
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387 /* Power up and feed the timer. */
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388 LPC_SC->PCONP |= 0x02UL;
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389 LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & (~(0x3<<2))) | (0x01 << 2);
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391 /* Reset Timer 0 */
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392 LPC_TIM0->TCR = TCR_COUNT_RESET;
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394 /* Just count up. */
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395 LPC_TIM0->CTCR = CTCR_CTM_TIMER;
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397 /* Prescale to a frequency that is good enough to get a decent resolution,
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398 but not too fast so as to overflow all the time. */
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399 LPC_TIM0->PR = ( configCPU_CLOCK_HZ / 10000UL ) - 1UL;
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401 /* Start the counter. */
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402 LPC_TIM0->TCR = TCR_COUNT_ENABLE;
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404 /*-----------------------------------------------------------*/
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