2 FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 ***************************************************************************
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29 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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31 * This is a concise, step by step, 'hands on' guide that describes both *
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32 * general multitasking concepts and FreeRTOS specifics. It presents and *
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33 * explains numerous examples that are written using the FreeRTOS API. *
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34 * Full source code for all the examples is provided in an accompanying *
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37 ***************************************************************************
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38 ***************************************************************************
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40 Please ensure to read the configuration and relevant port sections of the
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41 online documentation.
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43 http://www.FreeRTOS.org - Documentation, latest information, license and
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46 http://www.SafeRTOS.com - A version that is certified for use in safety
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49 http://www.OpenRTOS.com - Commercial support, development, porting,
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50 licensing and training services.
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53 /* Environment includes. */
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54 #include <targets/LPC2368.h>
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56 /* Scheduler includes. */
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57 #include "FreeRTOS.h"
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62 /* Demo app includes. */
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65 #include "integer.h"
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66 #include "blocktim.h"
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67 #include "portlcd.h"
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69 #include "partest.h"
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70 #include "semtest.h"
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73 /* Demo application definitions. */
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74 #define mainQUEUE_SIZE ( 3 )
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75 #define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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76 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 )
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78 /* Task priorities. */
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79 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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80 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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81 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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82 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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83 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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84 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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85 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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89 * Checks the status of all the demo tasks then prints a message to the
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90 * CrossStudio terminal IO windows. The message will be either PASS or FAIL
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91 * depending on the status of the demo applications tasks. A FAIL status will
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94 * Messages are not written directly to the terminal, but passed to vPrintTask
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97 static void vCheckTask( void *pvParameters );
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100 * The task that handles the uIP stack. All TCP/IP processing is performed in
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103 extern void vuIP_Task( void *pvParameters );
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106 * The LCD is written two by more than one task so is controlled by a
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107 * 'gatekeeper' task. This is the only task that is actually permitted to
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108 * access the LCD directly. Other tasks wanting to display a message send
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109 * the message to the gatekeeper.
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111 static void vLCDTask( void *pvParameters );
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113 /* The queue used to send messages to the LCD task. */
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114 xQueueHandle xLCDQueue;
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116 /*-----------------------------------------------------------*/
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120 /* Setup the led's on the MCB2300 board */
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121 vParTestInitialise();
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123 /* Create the queue used by the LCD task. Messages for display on the LCD
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124 are received via this queue. */
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125 xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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127 /* Create the lwIP task. This uses the lwIP RTOS abstraction layer.*/
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128 xTaskCreate( vuIP_Task, ( signed portCHAR * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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130 /* Start the standard demo tasks. */
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131 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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132 vCreateBlockTimeTasks();
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133 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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134 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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135 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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136 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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138 /* Start the tasks defined within this file/specific to this demo. */
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139 xTaskCreate( vCheckTask, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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140 xTaskCreate( vLCDTask, ( signed portCHAR * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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142 /* The suicide tasks must be created last as they need to know how many
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143 tasks were running prior to their creation in order to ascertain whether
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144 or not the correct/expected number of tasks are running at any given time. */
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145 vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
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147 /* Start the scheduler. */
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148 vTaskStartScheduler();
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150 /* Will only get here if there was insufficient memory to create the idle
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154 /*-----------------------------------------------------------*/
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156 static void vCheckTask( void *pvParameters )
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158 portBASE_TYPE xErrorOccurred = pdFALSE;
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159 portTickType xLastExecutionTime;
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160 unsigned portBASE_TYPE uxColumn = 0;
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161 xLCDMessage xMessage;
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163 xLastExecutionTime = xTaskGetTickCount();
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165 xMessage.xColumn = 0;
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166 xMessage.pcMessage = "PASS";
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170 /* Perform this check every mainCHECK_DELAY milliseconds. */
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171 vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );
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173 /* Has an error been found in any task? */
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175 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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177 xErrorOccurred = pdTRUE;
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180 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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182 xErrorOccurred = pdTRUE;
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185 if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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187 xErrorOccurred = pdTRUE;
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190 if( xArePollingQueuesStillRunning() != pdTRUE )
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192 xErrorOccurred = pdTRUE;
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195 if( xIsCreateTaskStillRunning() != pdTRUE )
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197 xErrorOccurred = pdTRUE;
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200 if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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202 xErrorOccurred = pdTRUE;
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206 xMessage.xColumn++;
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207 LCD_gotoxy( ( uxColumn & 0x07 ) + 1, ( uxColumn & 0x01 ) + 1 );
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209 if( xErrorOccurred == pdTRUE )
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211 xMessage.pcMessage = "FAIL";
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214 /* Send the message to the LCD gatekeeper for display. */
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215 xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );
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218 /*-----------------------------------------------------------*/
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220 void vLCDTask( void *pvParameters )
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222 xLCDMessage xMessage;
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224 /* Initialise the LCD and display a startup message. */
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228 LCD_gotoxy( 1, 1 );
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229 LCD_puts( ( signed portCHAR * ) "www.FreeRTOS.org" );
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233 /* Wait for a message to arrive that requires displaying. */
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234 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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236 /* Display the message. Print each message to a different position. */
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238 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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239 LCD_puts( xMessage.pcMessage );
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243 /*-----------------------------------------------------------*/
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245 /* Keep the compiler quiet. */
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247 int __putchar( int c )
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