2 FreeRTOS V7.0.0 - Copyright (C) 2011 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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55 * This is a very simple demo that creates two tasks and one queue. One task
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56 * (the queue receive task) blocks on the queue to wait for data to arrive,
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57 * toggling an LED each time '100' is received. The other task (the queue send
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58 * task) repeatedly blocks for a fixed period before sending '100' to the queue
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59 * (causing the first task to toggle the LED).
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61 * For a much more complete and complex example select either the Debug or
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62 * Debug_with_optimisation build configurations within the Embedded Workbench
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66 /* Hardware specific includes. */
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67 #include <iorx62n.h>
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69 /* Kernel includes. */
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70 #include "FreeRTOS.h"
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74 /* Demo includes. */
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75 #include "partest.h"
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77 /* Priorities at which the tasks are created. */
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78 #define configQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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79 #define configQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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81 /* The rate at which data is sent to the queue, specified in milliseconds. */
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82 #define mainQUEUE_SEND_FREQUENCY_MS ( 500 / portTICK_RATE_MS )
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84 /* The number of items the queue can hold. This is 1 as the receive task
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85 will remove items as they are added so the send task should always find the
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87 #define mainQUEUE_LENGTH ( 1 )
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90 * The tasks as defined at the top of this file.
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92 static void prvQueueReceiveTask( void *pvParameters );
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93 static void prvQueueSendTask( void *pvParameters );
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95 /* The queue used by both tasks. */
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96 static xQueueHandle xQueue = NULL;
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98 /* This variable is not used by this simple Blinky example. It is defined
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99 purely to allow the project to link as it is used by the full project. */
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100 volatile unsigned long ulHighFrequencyTickCount = 0UL;
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101 /*-----------------------------------------------------------*/
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105 extern void HardwareSetup( void );
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107 /* Renesas provided CPU configuration routine. The clocks are configured in
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111 /* Create the queue. */
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112 xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
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114 if( xQueue != NULL )
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116 /* Start the two tasks as described at the top of this file. */
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117 xTaskCreate( prvQueueReceiveTask, "Rx", configMINIMAL_STACK_SIZE, NULL, configQUEUE_RECEIVE_TASK_PRIORITY, NULL );
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118 xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, configQUEUE_SEND_TASK_PRIORITY, NULL );
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120 /* Start the tasks running. */
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121 vTaskStartScheduler();
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124 /* If all is well we will never reach here as the scheduler will now be
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125 running. If we do reach here then it is likely that there was insufficient
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126 heap available for the idle task to be created. */
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129 /*-----------------------------------------------------------*/
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131 static void prvQueueSendTask( void *pvParameters )
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133 portTickType xNextWakeTime;
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134 const unsigned long ulValueToSend = 100UL;
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136 /* Initialise xNextWakeTime - this only needs to be done once. */
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137 xNextWakeTime = xTaskGetTickCount();
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141 /* Place this task in the blocked state until it is time to run again.
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142 The block state is specified in ticks, the constant used converts ticks
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144 vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
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146 /* Send to the queue - causing the queue receive task to flash its LED. 0
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147 is used so the send does not block - it shouldn't need to as the queue
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148 should always be empty here. */
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149 xQueueSend( xQueue, &ulValueToSend, 0 );
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152 /*-----------------------------------------------------------*/
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154 static void prvQueueReceiveTask( void *pvParameters )
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156 unsigned long ulReceivedValue;
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160 /* Wait until something arives in the queue - this will block
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161 indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
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162 FreeRTOSConfig.h. */
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163 xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
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165 /* To get here something must have arrived, but is it the expected
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166 value? If it is, toggle the LED. */
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167 if( ulReceivedValue == 100UL )
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169 vParTestToggleLED( 0 );
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173 /*-----------------------------------------------------------*/
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175 void vApplicationSetupTimerInterrupt( void )
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177 /* Enable compare match timer 0. */
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180 /* Interrupt on compare match. */
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181 CMT0.CMCR.BIT.CMIE = 1;
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183 /* Set the compare match value. */
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184 CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );
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186 /* Divide the PCLK by 8. */
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187 CMT0.CMCR.BIT.CKS = 0;
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189 /* Enable the interrupt... */
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190 _IEN( _CMT0_CMI0 ) = 1;
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192 /* ...and set its priority to the application defined kernel priority. */
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193 _IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;
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195 /* Start the timer. */
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196 CMT.CMSTR0.BIT.STR0 = 1;
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198 /*-----------------------------------------------------------*/
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200 /* This function is explained by the comments above its prototype at the top
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202 void vApplicationMallocFailedHook( void )
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206 /*-----------------------------------------------------------*/
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208 /* This function is explained by the comments above its prototype at the top
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210 void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName )
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214 /*-----------------------------------------------------------*/
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216 /* This function is explained by the comments above its prototype at the top
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218 void vApplicationIdleHook( void )
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220 /* Just to prevent the variable getting optimised away. */
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221 ( void ) ulHighFrequencyTickCount;
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223 /*-----------------------------------------------------------*/
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225 /* The following two functions are here just to allow all three build
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226 configurations to use the same vector table. They are not used in this
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227 demo, but linker errors will result if they are not defined. They can
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229 void vT0_1InterruptHandler( void ) {}
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230 void vT2_3InterruptHandler( void ) {}