2 FreeRTOS.org V4.5.0 - Copyright (C) 2003-2007 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 See http://www.FreeRTOS.org for documentation, latest information, license
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28 and contact details. Please ensure to read the configuration and relevant
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29 port sections of the online documentation.
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30 ***************************************************************************
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34 * Creates all the demo application tasks, then starts the scheduler. The WEB
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35 * documentation provides more details of the standard demo application tasks.
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36 * In addition to the standard demo tasks, the following tasks and tests are
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37 * defined and/or created within this file:
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39 * "LCD" task - the LCD task is a 'gatekeeper' task. It is the only task that
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40 * is permitted to access the display directly. Other tasks wishing to write a
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41 * message to the LCD send the message on a queue to the LCD task instead of
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42 * accessing the LCD themselves. The LCD task just blocks on the queue waiting
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43 * for messages - waking and displaying the messages as they arrive.
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45 * "Check" hook - This only executes every five seconds from the tick hook.
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46 * Its main function is to check that all the standard demo tasks are still
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47 * operational. Should any unexpected behaviour within a demo task be discovered
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48 * the tick hook will write an error to the LCD (via the LCD task). If all the
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49 * demo tasks are executing with their expected behaviour then the check task
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50 * writes PASS to the LCD (again via the LCD task), as described above.
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52 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
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53 * processing is performed in this task.
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56 /* Scheduler includes. */
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57 #include "FreeRTOS.h"
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62 /* Demo app includes. */
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65 #include "blocktim.h"
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66 #include "LCD/portlcd.h"
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68 #include "partest.h"
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69 #include "GenQTest.h"
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71 #include "dynamic.h"
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73 /* Demo application definitions. */
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74 #define mainQUEUE_SIZE ( 3 )
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75 #define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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76 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 6 )
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78 /* Task priorities. */
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79 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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80 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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81 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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82 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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83 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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84 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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86 /* Constants to setup the PLL. */
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87 #define mainPLL_MUL ( ( unsigned portLONG ) ( 12 - 1 ) )
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88 #define mainPLL_DIV ( ( unsigned portLONG ) 0x0000 )
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89 #define mainCPU_CLK_DIV ( ( unsigned portLONG ) 0x0004 )
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90 #define mainPLL_ENABLE ( ( unsigned portLONG ) 0x0001 )
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91 #define mainPLL_CONNECT ( ( ( unsigned portLONG ) 0x0002 ) | mainPLL_ENABLE )
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92 #define mainPLL_FEED_BYTE1 ( ( unsigned portLONG ) 0xaa )
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93 #define mainPLL_FEED_BYTE2 ( ( unsigned portLONG ) 0x55 )
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94 #define mainPLL_LOCK ( ( unsigned portLONG ) 0x4000000 )
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95 #define mainPLL_CONNECTED ( ( unsigned portLONG ) 0x2000000 )
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96 #define mainOSC_ENABLE ( ( unsigned portLONG ) 0x20 )
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97 #define mainOSC_STAT ( ( unsigned portLONG ) 0x40 )
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98 #define mainOSC_SELECT ( ( unsigned portLONG ) 0x01 )
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100 /* Constants to setup the MAM. */
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101 #define mainMAM_TIM_3 ( ( unsigned portCHAR ) 0x03 )
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102 #define mainMAM_MODE_FULL ( ( unsigned portCHAR ) 0x02 )
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105 * The task that handles the uIP stack. All TCP/IP processing is performed in
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108 extern void vuIP_Task( void *pvParameters );
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111 * The LCD is written two by more than one task so is controlled by a
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112 * 'gatekeeper' task. This is the only task that is actually permitted to
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113 * access the LCD directly. Other tasks wanting to display a message send
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114 * the message to the gatekeeper.
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116 static void vLCDTask( void *pvParameters );
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118 /* Configure the hardware as required by the demo. */
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119 static void prvSetupHardware( void );
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121 /* The queue used to send messages to the LCD task. */
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122 xQueueHandle xLCDQueue;
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124 /*-----------------------------------------------------------*/
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128 prvSetupHardware();
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130 /* Create the queue used by the LCD task. Messages for display on the LCD
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131 are received via this queue. */
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132 xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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134 /* Create the uIP task. This uses the lwIP RTOS abstraction layer.*/
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135 xTaskCreate( vuIP_Task, ( signed portCHAR * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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137 /* Start the standard demo tasks. */
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138 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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139 vCreateBlockTimeTasks();
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140 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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141 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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142 vStartQueuePeekTasks();
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143 vStartDynamicPriorityTasks();
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145 /* Start the tasks defined within this file/specific to this demo. */
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146 xTaskCreate( vLCDTask, ( signed portCHAR * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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148 /* Start the scheduler. */
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149 vTaskStartScheduler();
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151 /* Will only get here if there was insufficient memory to create the idle
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155 /*-----------------------------------------------------------*/
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157 void vApplicationTickHook( void )
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159 unsigned portBASE_TYPE uxColumn = 0;
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160 static xLCDMessage xMessage = { 0, "PASS" };
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161 static unsigned portLONG ulTicksSinceLastDisplay = 0;
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163 /* Called from every tick interrupt. Have enough ticks passed to make it
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164 time to perform our health status check again? */
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165 ulTicksSinceLastDisplay++;
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166 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
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168 ulTicksSinceLastDisplay = 0;
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170 /* Has an error been found in any task? */
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172 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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174 xMessage.pcMessage = "ERROR - BLOCKQ";
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177 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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179 xMessage.pcMessage = "ERROR - BLOCKTIM";
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182 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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184 xMessage.pcMessage = "ERROR - GENQ";
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187 if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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189 xMessage.pcMessage = "ERROR - PEEKQ";
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192 if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
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194 xMessage.pcMessage = "ERROR - DYNAMIC";
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197 xMessage.xColumn++;
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199 /* Send the message to the LCD gatekeeper for display. */
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200 xQueueSendToBackFromISR( xLCDQueue, &xMessage, pdFALSE );
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203 /*-----------------------------------------------------------*/
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205 void vLCDTask( void *pvParameters )
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207 xLCDMessage xMessage;
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209 /* Initialise the LCD and display a startup message. */
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213 LCD_gotoxy( 1, 1 );
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214 LCD_puts( "www.FreeRTOS.org" );
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218 /* Wait for a message to arrive that requires displaying. */
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219 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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221 /* Display the message. Print each message to a different position. */
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223 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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224 LCD_puts( xMessage.pcMessage );
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228 /*-----------------------------------------------------------*/
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230 static void prvSetupHardware( void )
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232 #ifdef RUN_FROM_RAM
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233 /* Remap the interrupt vectors to RAM if we are are running from RAM. */
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237 /* Disable the PLL. */
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239 PLLFEED = mainPLL_FEED_BYTE1;
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240 PLLFEED = mainPLL_FEED_BYTE2;
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242 /* Configure clock source. */
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243 SCS |= mainOSC_ENABLE;
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244 while( !( SCS & mainOSC_STAT ) );
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245 CLKSRCSEL = mainOSC_SELECT;
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247 /* Setup the PLL to multiply the XTAL input by 4. */
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248 PLLCFG = ( mainPLL_MUL | mainPLL_DIV );
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249 PLLFEED = mainPLL_FEED_BYTE1;
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250 PLLFEED = mainPLL_FEED_BYTE2;
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252 /* Turn on and wait for the PLL to lock... */
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253 PLLCON = mainPLL_ENABLE;
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254 PLLFEED = mainPLL_FEED_BYTE1;
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255 PLLFEED = mainPLL_FEED_BYTE2;
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256 CCLKCFG = mainCPU_CLK_DIV;
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257 while( !( PLLSTAT & mainPLL_LOCK ) );
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259 /* Connecting the clock. */
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260 PLLCON = mainPLL_CONNECT;
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261 PLLFEED = mainPLL_FEED_BYTE1;
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262 PLLFEED = mainPLL_FEED_BYTE2;
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263 while( !( PLLSTAT & mainPLL_CONNECTED ) );
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265 /* Setup and turn on the MAM. Three cycle access is used due to the fast
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266 PLL used. It is possible faster overall performance could be obtained by
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267 tuning the MAM and PLL settings. */
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269 MAMTIM = mainMAM_TIM_3;
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270 MAMCR = mainMAM_MODE_FULL;
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272 /* Setup the led's on the MCB2300 board */
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273 vParTestInitialise();
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