2 FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not it can be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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75 /* Environment includes. */
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76 #include <targets/LPC2368.h>
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78 /* Scheduler includes. */
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79 #include "FreeRTOS.h"
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84 /* Demo app includes. */
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87 #include "integer.h"
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88 #include "blocktim.h"
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89 #include "portlcd.h"
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91 #include "partest.h"
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92 #include "semtest.h"
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95 /* Demo application definitions. */
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96 #define mainQUEUE_SIZE ( 3 )
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97 #define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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98 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 )
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100 /* Task priorities. */
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101 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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102 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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103 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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104 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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105 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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106 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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107 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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111 * Checks the status of all the demo tasks then prints a message to the
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112 * CrossStudio terminal IO windows. The message will be either PASS or FAIL
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113 * depending on the status of the demo applications tasks. A FAIL status will
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116 * Messages are not written directly to the terminal, but passed to vPrintTask
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119 static void vCheckTask( void *pvParameters );
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122 * The task that handles the uIP stack. All TCP/IP processing is performed in
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125 extern void vuIP_Task( void *pvParameters );
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128 * The LCD is written two by more than one task so is controlled by a
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129 * 'gatekeeper' task. This is the only task that is actually permitted to
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130 * access the LCD directly. Other tasks wanting to display a message send
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131 * the message to the gatekeeper.
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133 static void vLCDTask( void *pvParameters );
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135 /* The queue used to send messages to the LCD task. */
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136 xQueueHandle xLCDQueue;
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138 /*-----------------------------------------------------------*/
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142 /* Setup the led's on the MCB2300 board */
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143 vParTestInitialise();
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145 /* Create the queue used by the LCD task. Messages for display on the LCD
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146 are received via this queue. */
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147 xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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149 /* Create the lwIP task. This uses the lwIP RTOS abstraction layer.*/
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150 xTaskCreate( vuIP_Task, ( signed char * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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152 /* Start the standard demo tasks - these serve no useful purpose other than
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153 to demonstrate the FreeRTOS API being used and to test the port. */
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154 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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155 vCreateBlockTimeTasks();
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156 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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157 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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158 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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159 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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161 /* Start the tasks defined within this file/specific to this demo. */
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162 xTaskCreate( vCheckTask, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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163 xTaskCreate( vLCDTask, ( signed char * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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165 /* The suicide tasks must be created last as they need to know how many
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166 tasks were running prior to their creation in order to ascertain whether
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167 or not the correct/expected number of tasks are running at any given time. */
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168 vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
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170 /* Start the scheduler. */
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171 vTaskStartScheduler();
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173 /* Will only get here if there was insufficient memory to create the idle
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177 /*-----------------------------------------------------------*/
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179 static void vCheckTask( void *pvParameters )
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181 portBASE_TYPE xErrorOccurred = pdFALSE;
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182 portTickType xLastExecutionTime;
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183 unsigned portBASE_TYPE uxColumn = 0;
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184 xLCDMessage xMessage;
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186 xLastExecutionTime = xTaskGetTickCount();
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188 xMessage.xColumn = 0;
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189 xMessage.pcMessage = "PASS";
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193 /* Perform this check every mainCHECK_DELAY milliseconds. */
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194 vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );
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196 /* Has an error been found in any task? */
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198 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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200 xErrorOccurred = pdTRUE;
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203 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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205 xErrorOccurred = pdTRUE;
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208 if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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210 xErrorOccurred = pdTRUE;
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213 if( xArePollingQueuesStillRunning() != pdTRUE )
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215 xErrorOccurred = pdTRUE;
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218 if( xIsCreateTaskStillRunning() != pdTRUE )
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220 xErrorOccurred = pdTRUE;
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223 if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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225 xErrorOccurred = pdTRUE;
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229 xMessage.xColumn++;
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230 LCD_gotoxy( ( uxColumn & 0x07 ) + 1, ( uxColumn & 0x01 ) + 1 );
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232 if( xErrorOccurred == pdTRUE )
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234 xMessage.pcMessage = "FAIL";
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237 /* Send the message to the LCD gatekeeper for display. */
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238 xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );
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241 /*-----------------------------------------------------------*/
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243 void vLCDTask( void *pvParameters )
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245 xLCDMessage xMessage;
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247 /* Initialise the LCD and display a startup message. */
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251 LCD_gotoxy( 1, 1 );
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252 LCD_puts( ( signed char * ) "www.FreeRTOS.org" );
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256 /* Wait for a message to arrive that requires displaying. */
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257 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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259 /* Display the message. Print each message to a different position. */
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261 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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262 LCD_puts( xMessage.pcMessage );
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266 /*-----------------------------------------------------------*/
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268 /* Keep the compiler quiet. */
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270 int __putchar( int c )
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