2 FreeRTOS V8.2.2 - Copyright (C) 2015 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 ***************************************************************************
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14 >>! NOTE: The modification to the GPL is included to allow you to !<<
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15 >>! distribute a combined work that includes FreeRTOS without being !<<
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16 >>! obliged to provide the source code for proprietary components !<<
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17 >>! outside of the FreeRTOS kernel. !<<
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18 ***************************************************************************
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20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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23 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * FreeRTOS provides completely free yet professionally developed, *
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28 * robust, strictly quality controlled, supported, and cross *
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29 * platform software that is more than just the market leader, it *
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30 * is the industry's de facto standard. *
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32 * Help yourself get started quickly while simultaneously helping *
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33 * to support the FreeRTOS project by purchasing a FreeRTOS *
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34 * tutorial book, reference manual, or both: *
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35 * http://www.FreeRTOS.org/Documentation *
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37 ***************************************************************************
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39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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40 the FAQ page "My application does not run, what could be wrong?". Have you
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41 defined configASSERT()?
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43 http://www.FreeRTOS.org/support - In return for receiving this top quality
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44 embedded software for free we request you assist our global community by
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45 participating in the support forum.
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47 http://www.FreeRTOS.org/training - Investing in training allows your team to
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48 be as productive as possible as early as possible. Now you can receive
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49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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50 Ltd, and the world's leading authority on the world's leading RTOS.
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52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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61 licenses offer ticketed support, indemnification and commercial middleware.
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63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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64 engineered and independently SIL3 certified version for use in safety and
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65 mission critical applications that require provable dependability.
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70 /******************************************************************************
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71 * This project provides two demo applications. A simple blinky style project,
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72 * and a more comprehensive test and demo application. The
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73 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
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74 * select between the two. The simply blinky demo is implemented and described
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75 * in main_blinky.c. The more comprehensive test and demo application is
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76 * implemented and described in main_full.c.
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78 * This file implements the code that is not demo specific, including the
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79 * hardware setup and FreeRTOS hook functions.
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81 * This project does not provide an example of how to write an RTOS compatible
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82 * interrupt service routine (other than the tick interrupt itself), so this
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83 * file contains the function vAnExampleISR_C_Handler() as a dummy example (that
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84 * is not actually installed) that can be used as a reference. Also see the
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85 * file ExampleISR.s87, and the documentation page for this demo on the
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86 * FreeRTOS.org website for full instructions.
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88 * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
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89 * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
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90 * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
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94 /* Scheduler include files. */
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95 #include "FreeRTOS.h"
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99 /* Hardware includes. */
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100 #include "demo_specific_io.h"
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102 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
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103 or 0 to run the more comprehensive test and demo application. */
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104 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
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106 /*-----------------------------------------------------------*/
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109 * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
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110 * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
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112 extern void main_blinky( void );
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113 extern void main_full( void );
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116 * This function is called from the C startup routine to setup the processor -
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117 * in particular the clock source.
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119 int __low_level_init(void);
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121 /* Prototypes for the standard FreeRTOS callback/hook functions implemented
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122 within this file. */
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123 void vApplicationMallocFailedHook( void );
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124 void vApplicationIdleHook( void );
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125 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
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126 void vApplicationTickHook( void );
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128 /*-----------------------------------------------------------*/
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130 /* This variable is not actually used, but provided to allow an example of how
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131 to write an ISR to be included in this file. */
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132 static SemaphoreHandle_t xSemaphore = NULL;
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134 /* RL78 Option Byte Definition. Watchdog disabled, LVI enabled, OCD interface
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136 __root __far const unsigned char OptionByte[] @ 0x00C0 =
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138 0x6eU, 0xffU, 0xe8U, 0x85U
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141 /* Security byte definition */
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142 __root __far const unsigned char ucSecurityCode[] @ 0x00C4 =
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144 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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147 /*-----------------------------------------------------------*/
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151 /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
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153 #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
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163 /*-----------------------------------------------------------*/
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165 void vAnExampleISR_C_Handler( void )
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168 * This demo does not include a functional interrupt service routine - so
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169 * this dummy handler (which is not actually installed) is provided as an
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170 * example of how an ISR that needs to cause a context switch needs to be
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171 * implemented. ISRs that do not cause a context switch have no special
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172 * requirements and can be written as per the compiler documentation.
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174 * This C function is called from a wrapper function that is implemented
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175 * in assembly code. See vANExampleISR_ASM_Wrapper() in ExampleISR.s87.
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176 * Also see the documentation page for this demo on the FreeRTOS.org website
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177 * for full instructions.
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179 short sHigherPriorityTaskWoken = pdFALSE;
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181 /* Handler code goes here...*/
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183 /* For purposes of demonstration, assume at some point the hander calls
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184 xSemaphoreGiveFromISR().*/
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185 xSemaphoreGiveFromISR( xSemaphore, &sHigherPriorityTaskWoken );
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187 /* If giving the semaphore unblocked a task, and the unblocked task has a
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188 priority higher than or equal to the currently running task, then
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189 sHigherPriorityTaskWoken will have been set to pdTRUE internally within the
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190 xSemaphoreGiveFromISR() function. Passing a pdTRUE value to
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191 portYIELD_FROM_ISR() will cause this interrupt to return directly to the
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192 higher priority unblocked task. */
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193 portYIELD_FROM_ISR( sHigherPriorityTaskWoken );
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195 /*-----------------------------------------------------------*/
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197 int __low_level_init(void)
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199 portDISABLE_INTERRUPTS();
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218 /* LED port initialization. */
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223 /*-----------------------------------------------------------*/
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225 void vApplicationMallocFailedHook( void )
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227 /* Called if a call to pvPortMalloc() fails because there is insufficient
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228 free memory available in the FreeRTOS heap. pvPortMalloc() is called
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229 internally by FreeRTOS API functions that create tasks, queues, software
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230 timers, and semaphores. The size of the FreeRTOS heap is set by the
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231 configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */
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232 taskDISABLE_INTERRUPTS();
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235 /*-----------------------------------------------------------*/
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237 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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239 ( void ) pcTaskName;
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242 /* Run time stack overflow checking is performed if
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243 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
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244 function is called if a stack overflow is detected. */
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245 taskDISABLE_INTERRUPTS();
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248 /*-----------------------------------------------------------*/
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250 void vApplicationIdleHook( void )
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252 volatile size_t xFreeHeapSpace;
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254 /* This is just a trivial example of an idle hook. It is called on each
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255 cycle of the idle task. It must *NOT* attempt to block. In this case the
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256 idle task just queries the amount of FreeRTOS heap that remains. See the
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257 memory management section on the http://www.FreeRTOS.org web site for memory
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258 management options. If there is a lot of heap memory free then the
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259 configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up
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261 xFreeHeapSpace = xPortGetFreeHeapSize();
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263 /* Remove compiler warning about xFreeHeapSpace being set but never used. */
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264 ( void ) xFreeHeapSpace;
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