2 FreeRTOS V7.5.3 - Copyright (C) 2013 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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67 FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd.
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70 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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72 ***************************************************************************
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74 * FreeRTOS provides completely free yet professionally developed, *
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75 * robust, strictly quality controlled, supported, and cross *
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76 * platform software that has become a de facto standard. *
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78 * Help yourself get started quickly and support the FreeRTOS *
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79 * project by purchasing a FreeRTOS tutorial book, reference *
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80 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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84 ***************************************************************************
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86 This file is part of the FreeRTOS distribution.
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88 FreeRTOS is free software; you can redistribute it and/or modify it under
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89 the terms of the GNU General Public License (version 2) as published by the
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90 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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92 >>! NOTE: The modification to the GPL is included to allow you to distribute
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93 >>! a combined work that includes FreeRTOS without being obliged to provide
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94 >>! the source code for proprietary components outside of the FreeRTOS
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97 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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98 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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99 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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100 link: http://www.freertos.org/a00114.html
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104 ***************************************************************************
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106 * Having a problem? Start by reading the FAQ "My application does *
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107 * not run, what could be wrong?" *
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109 * http://www.FreeRTOS.org/FAQHelp.html *
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111 ***************************************************************************
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113 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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114 license and Real Time Engineers Ltd. contact details.
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116 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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117 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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118 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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120 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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121 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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122 licenses offer ticketed support, indemnification and middleware.
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124 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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125 engineered and independently SIL3 certified version for use in safety and
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126 mission critical applications that require provable dependability.
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131 /******************************************************************************
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132 * This project provides two demo applications. A low power project that
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133 * demonstrates the FreeRTOS tickless mode, and a more comprehensive test and
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134 * demo application. The configCREATE_LOW_POWER_DEMO setting (defined at the
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135 * top of FreeRTOSConfig.h) is used to select between the two. The low power
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136 * demo is implemented and described in main_low_power.c. The more
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137 * comprehensive test and demo application is implemented and described in
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140 * This file implements the code that is not demo specific, including the
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141 * hardware setup and FreeRTOS hook functions.
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144 /* Standard includes. */
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147 /* Kernel includes. */
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148 #include "FreeRTOS.h"
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151 /* Standard demo includes - just needed for the LED (ParTest) initialisation
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153 #include "partest.h"
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155 /* Atmel library includes. */
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158 /*-----------------------------------------------------------*/
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161 * Set up the hardware ready to run this demo.
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163 static void prvSetupHardware( void );
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166 * main_low_power() is used when configCREATE_LOW_POWER_DEMO is set to 1.
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167 * main_full() is used when configCREATE_LOW_POWER_DEMO is set to 0.
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168 * configCREATE_LOW_POWER_DEMO is defined at the top of main.c.
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170 extern void main_low_power( void );
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171 extern void main_full( void );
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173 /* Prototypes for the standard FreeRTOS callback/hook functions implemented
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174 within this file. */
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175 void vApplicationMallocFailedHook( void );
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176 void vApplicationIdleHook( void );
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177 void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName );
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178 void vApplicationTickHook( void );
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180 /*-----------------------------------------------------------*/
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182 /* See the documentation page for this demo on the FreeRTOS.org web site for
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183 full information - including hardware setup requirements. */
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186 /* Prepare the hardware to run this demo. */
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187 prvSetupHardware();
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189 /* The configCREATE_LOW_POWER_DEMO setting is described at the top of
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191 #if configCREATE_LOW_POWER_DEMO == 1
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203 /*-----------------------------------------------------------*/
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205 static void prvSetupHardware( void )
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207 extern void SystemCoreClockUpdate( void );
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209 /* ASF function to setup clocking. */
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212 /* Ensure all priority bits are assigned as preemption priority bits. */
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213 NVIC_SetPriorityGrouping( 0 );
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215 /* Atmel library function to setup for the evaluation kit being used. */
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218 /* Initialise the sleep manager in case the low power demo is being used. */
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221 /*-----------------------------------------------------------*/
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223 void vApplicationMallocFailedHook( void )
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225 /* vApplicationMallocFailedHook() will only be called if
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226 configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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227 function that will get called if a call to pvPortMalloc() fails.
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228 pvPortMalloc() is called internally by the kernel whenever a task, queue,
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229 timer or semaphore is created. It is also called by various parts of the
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230 demo application. If heap_1.c or heap_2.c are used, then the size of the
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231 heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
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232 FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
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233 to query the size of free heap space that remains (although it does not
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234 provide information on how the remaining heap might be fragmented). */
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235 taskDISABLE_INTERRUPTS();
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238 /*-----------------------------------------------------------*/
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240 void vApplicationIdleHook( void )
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242 /* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
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243 to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
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244 task. It is essential that code added to this hook function never attempts
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245 to block in any way (for example, call xQueueReceive() with a block time
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246 specified, or call vTaskDelay()). If the application makes use of the
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247 vTaskDelete() API function (as this demo application does) then it is also
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248 important that vApplicationIdleHook() is permitted to return to its calling
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249 function, because it is the responsibility of the idle task to clean up
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250 memory allocated by the kernel to any task that has since been deleted. */
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252 /*-----------------------------------------------------------*/
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254 void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
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256 ( void ) pcTaskName;
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259 /* Run time stack overflow checking is performed if
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260 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
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261 function is called if a stack overflow is detected. */
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262 taskDISABLE_INTERRUPTS();
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265 /*-----------------------------------------------------------*/
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267 void vApplicationTickHook( void )
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269 /* This function will be called by each tick interrupt if
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270 configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
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271 added here, but the tick hook is called from an interrupt context, so
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272 code must not attempt to block, and only the interrupt safe FreeRTOS API
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273 functions can be used (those that end in FromISR()). */
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275 /*-----------------------------------------------------------*/
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277 void vAssertCalled( void )
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279 volatile unsigned long ul = 0;
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281 taskENTER_CRITICAL();
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283 /* Set ul to a non-zero value using the debugger to step out of this
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287 __asm volatile( "NOP" );
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290 taskEXIT_CRITICAL();
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