2 FreeRTOS.org V4.7.0 - Copyright (C) 2003-2007 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 See http://www.FreeRTOS.org for documentation, latest information, license
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28 and contact details. Please ensure to read the configuration and relevant
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29 port sections of the online documentation.
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31 Also see http://www.SafeRTOS.com a version that has been certified for use
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32 in safety critical systems, plus commercial licensing, development and
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34 ***************************************************************************
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38 * Creates all the demo application tasks, then starts the scheduler. The WEB
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39 * documentation provides more details of the standard demo application tasks.
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40 * In addition to the standard demo tasks, the following tasks and tests are
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41 * defined and/or created within this file:
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43 * "LCD" task - the LCD task is a 'gatekeeper' task. It is the only task that
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44 * is permitted to access the display directly. Other tasks wishing to write a
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45 * message to the LCD send the message on a queue to the LCD task instead of
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46 * accessing the LCD themselves. The LCD task just blocks on the queue waiting
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47 * for messages - waking and displaying the messages as they arrive.
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49 * "Check" hook - This only executes every five seconds from the tick hook.
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50 * Its main function is to check that all the standard demo tasks are still
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51 * operational. Should any unexpected behaviour within a demo task be discovered
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52 * the tick hook will write an error to the LCD (via the LCD task). If all the
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53 * demo tasks are executing with their expected behaviour then the check task
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54 * writes PASS to the LCD (again via the LCD task), as described above.
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56 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
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57 * processing is performed in this task.
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60 /* Scheduler includes. */
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61 #include "FreeRTOS.h"
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66 /* Demo app includes. */
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69 #include "blocktim.h"
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70 #include "LCD/portlcd.h"
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72 #include "partest.h"
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73 #include "GenQTest.h"
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75 #include "dynamic.h"
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77 /* Demo application definitions. */
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78 #define mainQUEUE_SIZE ( 3 )
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79 #define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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80 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 6 )
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82 /* Task priorities. */
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83 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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84 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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85 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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86 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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87 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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88 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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90 /* Constants to setup the PLL. */
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91 #define mainPLL_MUL ( ( unsigned portLONG ) ( 12 - 1 ) )
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92 #define mainPLL_DIV ( ( unsigned portLONG ) 0x0000 )
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93 #define mainCPU_CLK_DIV ( ( unsigned portLONG ) 0x0003 )
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94 #define mainPLL_ENABLE ( ( unsigned portLONG ) 0x0001 )
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95 #define mainPLL_CONNECT ( ( ( unsigned portLONG ) 0x0002 ) | mainPLL_ENABLE )
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96 #define mainPLL_FEED_BYTE1 ( ( unsigned portLONG ) 0xaa )
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97 #define mainPLL_FEED_BYTE2 ( ( unsigned portLONG ) 0x55 )
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98 #define mainPLL_LOCK ( ( unsigned portLONG ) 0x4000000 )
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99 #define mainPLL_CONNECTED ( ( unsigned portLONG ) 0x2000000 )
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100 #define mainOSC_ENABLE ( ( unsigned portLONG ) 0x20 )
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101 #define mainOSC_STAT ( ( unsigned portLONG ) 0x40 )
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102 #define mainOSC_SELECT ( ( unsigned portLONG ) 0x01 )
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104 /* Constants to setup the MAM. */
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105 #define mainMAM_TIM_3 ( ( unsigned portCHAR ) 0x03 )
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106 #define mainMAM_MODE_FULL ( ( unsigned portCHAR ) 0x02 )
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109 * The task that handles the uIP stack. All TCP/IP processing is performed in
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112 extern void vuIP_Task( void *pvParameters );
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115 * The LCD is written two by more than one task so is controlled by a
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116 * 'gatekeeper' task. This is the only task that is actually permitted to
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117 * access the LCD directly. Other tasks wanting to display a message send
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118 * the message to the gatekeeper.
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120 static void vLCDTask( void *pvParameters );
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122 /* Configure the hardware as required by the demo. */
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123 static void prvSetupHardware( void );
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125 /* The queue used to send messages to the LCD task. */
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126 xQueueHandle xLCDQueue;
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128 /*-----------------------------------------------------------*/
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132 prvSetupHardware();
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134 /* Create the queue used by the LCD task. Messages for display on the LCD
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135 are received via this queue. */
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136 xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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138 /* Create the uIP task. This uses the lwIP RTOS abstraction layer.*/
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139 xTaskCreate( vuIP_Task, ( signed portCHAR * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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141 /* Start the standard demo tasks. */
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142 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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143 vCreateBlockTimeTasks();
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144 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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145 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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146 vStartQueuePeekTasks();
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147 vStartDynamicPriorityTasks();
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149 /* Start the tasks defined within this file/specific to this demo. */
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150 xTaskCreate( vLCDTask, ( signed portCHAR * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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152 /* Start the scheduler. */
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153 vTaskStartScheduler();
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155 /* Will only get here if there was insufficient memory to create the idle
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159 /*-----------------------------------------------------------*/
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161 void vApplicationTickHook( void )
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163 unsigned portBASE_TYPE uxColumn = 0;
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164 static xLCDMessage xMessage = { 0, "PASS" };
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165 static unsigned portLONG ulTicksSinceLastDisplay = 0;
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167 /* Called from every tick interrupt. Have enough ticks passed to make it
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168 time to perform our health status check again? */
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169 ulTicksSinceLastDisplay++;
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170 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
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172 ulTicksSinceLastDisplay = 0;
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174 /* Has an error been found in any task? */
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176 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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178 xMessage.pcMessage = "ERROR - BLOCKQ";
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181 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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183 xMessage.pcMessage = "ERROR - BLOCKTIM";
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186 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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188 xMessage.pcMessage = "ERROR - GENQ";
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191 if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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193 xMessage.pcMessage = "ERROR - PEEKQ";
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196 if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
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198 xMessage.pcMessage = "ERROR - DYNAMIC";
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201 xMessage.xColumn++;
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203 /* Send the message to the LCD gatekeeper for display. */
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204 xQueueSendToBackFromISR( xLCDQueue, &xMessage, pdFALSE );
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207 /*-----------------------------------------------------------*/
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209 void vLCDTask( void *pvParameters )
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211 xLCDMessage xMessage;
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213 /* Initialise the LCD and display a startup message. */
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217 LCD_gotoxy( 1, 1 );
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218 LCD_puts( "www.FreeRTOS.org" );
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222 /* Wait for a message to arrive that requires displaying. */
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223 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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225 /* Display the message. Print each message to a different position. */
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227 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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228 LCD_puts( xMessage.pcMessage );
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232 /*-----------------------------------------------------------*/
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234 static void prvSetupHardware( void )
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236 #ifdef RUN_FROM_RAM
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237 /* Remap the interrupt vectors to RAM if we are are running from RAM. */
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241 /* Disable the PLL. */
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243 PLLFEED = mainPLL_FEED_BYTE1;
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244 PLLFEED = mainPLL_FEED_BYTE2;
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246 /* Configure clock source. */
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247 SCS |= mainOSC_ENABLE;
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248 while( !( SCS & mainOSC_STAT ) );
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249 CLKSRCSEL = mainOSC_SELECT;
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251 /* Setup the PLL to multiply the XTAL input by 4. */
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252 PLLCFG = ( mainPLL_MUL | mainPLL_DIV );
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253 PLLFEED = mainPLL_FEED_BYTE1;
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254 PLLFEED = mainPLL_FEED_BYTE2;
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256 /* Turn on and wait for the PLL to lock... */
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257 PLLCON = mainPLL_ENABLE;
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258 PLLFEED = mainPLL_FEED_BYTE1;
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259 PLLFEED = mainPLL_FEED_BYTE2;
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260 CCLKCFG = mainCPU_CLK_DIV;
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261 while( !( PLLSTAT & mainPLL_LOCK ) );
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263 /* Connecting the clock. */
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264 PLLCON = mainPLL_CONNECT;
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265 PLLFEED = mainPLL_FEED_BYTE1;
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266 PLLFEED = mainPLL_FEED_BYTE2;
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267 while( !( PLLSTAT & mainPLL_CONNECTED ) );
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270 This code is commented out as the MAM does not work on the original revision
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271 LPC2368 chips. If using Rev B chips then you can increase the speed though
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272 the use of the MAM.
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274 Setup and turn on the MAM. Three cycle access is used due to the fast
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275 PLL used. It is possible faster overall performance could be obtained by
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276 tuning the MAM and PLL settings.
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278 MAMTIM = mainMAM_TIM_3;
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279 MAMCR = mainMAM_MODE_FULL;
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282 /* Setup the led's on the MCB2300 board */
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283 vParTestInitialise();
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