2 FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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6 ***************************************************************************
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8 * FreeRTOS provides completely free yet professionally developed, *
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9 * robust, strictly quality controlled, supported, and cross *
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10 * platform software that has become a de facto standard. *
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12 * Help yourself get started quickly and support the FreeRTOS *
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13 * project by purchasing a FreeRTOS tutorial book, reference *
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14 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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18 ***************************************************************************
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20 This file is part of the FreeRTOS distribution.
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22 FreeRTOS is free software; you can redistribute it and/or modify it under
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23 the terms of the GNU General Public License (version 2) as published by the
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24 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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26 >>! NOTE: The modification to the GPL is included to allow you to distribute
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27 >>! a combined work that includes FreeRTOS without being obliged to provide
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28 >>! the source code for proprietary components outside of the FreeRTOS
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31 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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32 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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33 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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34 link: http://www.freertos.org/a00114.html
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38 ***************************************************************************
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40 * Having a problem? Start by reading the FAQ "My application does *
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41 * not run, what could be wrong?" *
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43 * http://www.FreeRTOS.org/FAQHelp.html *
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45 ***************************************************************************
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47 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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48 license and Real Time Engineers Ltd. contact details.
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50 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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51 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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52 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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54 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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55 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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56 licenses offer ticketed support, indemnification and middleware.
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58 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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59 engineered and independently SIL3 certified version for use in safety and
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60 mission critical applications that require provable dependability.
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65 /******************************************************************************
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66 * This project provides two demo applications. A simple blinky style project,
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67 * and a more comprehensive test and demo application. The
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68 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
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69 * select between the two. The simply blinky demo is implemented and described
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70 * in main_blinky.c. The more comprehensive test and demo application is
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71 * implemented and described in main_full.c.
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73 * This file implements the code that is not demo specific, including the
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74 * hardware setup and FreeRTOS hook functions.
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76 * This project does not provide an example of how to write an RTOS compatible
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77 * interrupt service routine (other than the tick interrupt itself), so this
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78 * file contains the function vAnExampleISR_C_Handler() as a dummy example (that
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79 * is not actually installed) that can be used as a reference. Also see the
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80 * file ExampleISR.s87, and the documentation page for this demo on the
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81 * FreeRTOS.org website for full instructions.
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83 * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
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84 * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
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85 * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
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89 /* Scheduler include files. */
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90 #include "FreeRTOS.h"
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94 /* Hardware includes. */
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95 #include "demo_specific_io.h"
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97 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
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98 or 0 to run the more comprehensive test and demo application. */
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99 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 1
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101 /*-----------------------------------------------------------*/
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104 * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
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105 * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
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107 extern void main_blinky( void );
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108 extern void main_full( void );
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111 * This function is called from the C startup routine to setup the processor -
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112 * in particular the clock source.
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114 int __low_level_init(void);
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116 /* Prototypes for the standard FreeRTOS callback/hook functions implemented
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117 within this file. */
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118 void vApplicationMallocFailedHook( void );
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119 void vApplicationIdleHook( void );
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120 void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName );
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121 void vApplicationTickHook( void );
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123 /*-----------------------------------------------------------*/
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125 /* This variable is not actually used, but provided to allow an example of how
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126 to write an ISR to be included in this file. */
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127 static xSemaphoreHandle xSemaphore = NULL;
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129 /* RL78 Option Byte Definition. Watchdog disabled, LVI enabled, OCD interface
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131 __root __far const unsigned char OptionByte[] @ 0x00C0 =
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133 0x6eU, 0xffU, 0xe8U, 0x85U
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136 /* Security byte definition */
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137 __root __far const unsigned char ucSecurityCode[] @ 0x00C4 =
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139 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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142 /*-----------------------------------------------------------*/
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146 /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
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148 #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
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158 /*-----------------------------------------------------------*/
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160 void vAnExampleISR_C_Handler( void )
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163 * This demo does not include a functional interrupt service routine - so
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164 * this dummy handler (which is not actually installed) is provided as an
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165 * example of how an ISR that needs to cause a context switch needs to be
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166 * implemented. ISRs that do not cause a context switch have no special
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167 * requirements and can be written as per the compiler documentation.
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169 * This C function is called from a wrapper function that is implemented
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170 * in assembly code. See vANExampleISR_ASM_Wrapper() in ExampleISR.s87.
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171 * Also see the documentation page for this demo on the FreeRTOS.org website
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172 * for full instructions.
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174 short sHigherPriorityTaskWoken = pdFALSE;
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176 /* Handler code goes here...*/
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178 /* For purposes of demonstration, assume at some point the hander calls
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179 xSemaphoreGiveFromISR().*/
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180 xSemaphoreGiveFromISR( xSemaphore, &sHigherPriorityTaskWoken );
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182 /* If giving the semaphore unblocked a task, and the unblocked task has a
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183 priority higher than or equal to the currently running task, then
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184 sHigherPriorityTaskWoken will have been set to pdTRUE internally within the
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185 xSemaphoreGiveFromISR() function. Passing a pdTRUE value to
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186 portYIELD_FROM_ISR() will cause this interrupt to return directly to the
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187 higher priority unblocked task. */
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188 portYIELD_FROM_ISR( sHigherPriorityTaskWoken );
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190 /*-----------------------------------------------------------*/
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192 int __low_level_init(void)
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194 portDISABLE_INTERRUPTS();
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213 /* LED port initialization. */
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218 /*-----------------------------------------------------------*/
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220 void vApplicationMallocFailedHook( void )
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222 /* Called if a call to pvPortMalloc() fails because there is insufficient
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223 free memory available in the FreeRTOS heap. pvPortMalloc() is called
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224 internally by FreeRTOS API functions that create tasks, queues, software
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225 timers, and semaphores. The size of the FreeRTOS heap is set by the
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226 configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */
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227 taskDISABLE_INTERRUPTS();
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230 /*-----------------------------------------------------------*/
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232 void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
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234 ( void ) pcTaskName;
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237 /* Run time stack overflow checking is performed if
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238 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
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239 function is called if a stack overflow is detected. */
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240 taskDISABLE_INTERRUPTS();
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243 /*-----------------------------------------------------------*/
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245 void vApplicationIdleHook( void )
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247 volatile size_t xFreeHeapSpace;
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249 /* This is just a trivial example of an idle hook. It is called on each
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250 cycle of the idle task. It must *NOT* attempt to block. In this case the
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251 idle task just queries the amount of FreeRTOS heap that remains. See the
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252 memory management section on the http://www.FreeRTOS.org web site for memory
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253 management options. If there is a lot of heap memory free then the
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254 configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up
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256 xFreeHeapSpace = xPortGetFreeHeapSize();
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258 /* Remove compiler warning about xFreeHeapSpace being set but never used. */
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259 ( void ) xFreeHeapSpace;
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