2 FreeRTOS V5.4.1 - Copyright (C) 2009 Real Time Engineers Ltd.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License (version 2) as published by the
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8 Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS without being obliged to provide the
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11 source code for proprietary components outside of the FreeRTOS kernel.
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12 Alternative commercial license and support terms are also available upon
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13 request. See the licensing section of http://www.FreeRTOS.org for full
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16 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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21 You should have received a copy of the GNU General Public License along
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22 with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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23 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 ***************************************************************************
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28 * Looking for a quick start? Then check out the FreeRTOS eBook! *
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29 * See http://www.FreeRTOS.org/Documentation for details *
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31 ***************************************************************************
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35 Please ensure to read the configuration and relevant port sections of the
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36 online documentation.
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38 http://www.FreeRTOS.org - Documentation, latest information, license and
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41 http://www.SafeRTOS.com - A version that is certified for use in safety
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44 http://www.OpenRTOS.com - Commercial support, development, porting,
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45 licensing and training services.
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49 * Creates all the demo application tasks, then starts the scheduler. The WEB
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50 * documentation provides more details of the standard demo application tasks.
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51 * In addition to the standard demo tasks, the following tasks and tests are
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52 * defined and/or created within this file:
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54 * "LCD" task - the LCD task is a 'gatekeeper' task. It is the only task that
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55 * is permitted to access the display directly. Other tasks wishing to write a
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56 * message to the LCD send the message on a queue to the LCD task instead of
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57 * accessing the LCD themselves. The LCD task just blocks on the queue waiting
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58 * for messages - waking and displaying the messages as they arrive.
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60 * "Check" hook - This only executes every five seconds from the tick hook.
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61 * Its main function is to check that all the standard demo tasks are still
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62 * operational. Should any unexpected behaviour within a demo task be discovered
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63 * the tick hook will write an error to the LCD (via the LCD task). If all the
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64 * demo tasks are executing with their expected behaviour then the check task
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65 * writes PASS to the LCD (again via the LCD task), as described above.
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67 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
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68 * processing is performed in this task.
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71 /* Scheduler includes. */
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72 #include "FreeRTOS.h"
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77 /* Demo app includes. */
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80 #include "blocktim.h"
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81 #include "LCD/portlcd.h"
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83 #include "partest.h"
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84 #include "GenQTest.h"
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86 #include "dynamic.h"
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88 /* Demo application definitions. */
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89 #define mainQUEUE_SIZE ( 3 )
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90 #define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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91 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 6 )
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93 /* Task priorities. */
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94 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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95 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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96 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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97 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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98 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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99 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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101 /* Constants to setup the PLL. */
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102 #define mainPLL_MUL ( ( unsigned portLONG ) ( 8 - 1 ) )
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103 #define mainPLL_DIV ( ( unsigned portLONG ) 0x0000 )
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104 #define mainCPU_CLK_DIV ( ( unsigned portLONG ) 0x0003 )
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105 #define mainPLL_ENABLE ( ( unsigned portLONG ) 0x0001 )
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106 #define mainPLL_CONNECT ( ( ( unsigned portLONG ) 0x0002 ) | mainPLL_ENABLE )
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107 #define mainPLL_FEED_BYTE1 ( ( unsigned portLONG ) 0xaa )
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108 #define mainPLL_FEED_BYTE2 ( ( unsigned portLONG ) 0x55 )
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109 #define mainPLL_LOCK ( ( unsigned portLONG ) 0x4000000 )
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110 #define mainPLL_CONNECTED ( ( unsigned portLONG ) 0x2000000 )
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111 #define mainOSC_ENABLE ( ( unsigned portLONG ) 0x20 )
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112 #define mainOSC_STAT ( ( unsigned portLONG ) 0x40 )
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113 #define mainOSC_SELECT ( ( unsigned portLONG ) 0x01 )
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115 /* Constants to setup the MAM. */
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116 #define mainMAM_TIM_3 ( ( unsigned portCHAR ) 0x03 )
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117 #define mainMAM_MODE_FULL ( ( unsigned portCHAR ) 0x02 )
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120 * The task that handles the uIP stack. All TCP/IP processing is performed in
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123 extern void vuIP_Task( void *pvParameters );
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126 * The LCD is written two by more than one task so is controlled by a
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127 * 'gatekeeper' task. This is the only task that is actually permitted to
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128 * access the LCD directly. Other tasks wanting to display a message send
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129 * the message to the gatekeeper.
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131 static void vLCDTask( void *pvParameters );
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133 /* Configure the hardware as required by the demo. */
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134 static void prvSetupHardware( void );
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136 /* The queue used to send messages to the LCD task. */
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137 xQueueHandle xLCDQueue;
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139 /*-----------------------------------------------------------*/
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143 prvSetupHardware();
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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 uIP task. This uses the lwIP RTOS abstraction layer.*/
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150 xTaskCreate( vuIP_Task, ( signed portCHAR * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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152 /* Start the standard demo tasks. */
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153 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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154 vCreateBlockTimeTasks();
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155 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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156 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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157 vStartQueuePeekTasks();
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158 vStartDynamicPriorityTasks();
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160 /* Start the tasks defined within this file/specific to this demo. */
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161 xTaskCreate( vLCDTask, ( signed portCHAR * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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163 /* Start the scheduler. */
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164 vTaskStartScheduler();
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166 /* Will only get here if there was insufficient memory to create the idle
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170 /*-----------------------------------------------------------*/
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172 void vApplicationTickHook( void )
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174 unsigned portBASE_TYPE uxColumn = 0;
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175 static xLCDMessage xMessage = { 0, "PASS" };
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176 static unsigned portLONG ulTicksSinceLastDisplay = 0;
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177 static portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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179 /* Called from every tick interrupt. Have enough ticks passed to make it
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180 time to perform our health status check again? */
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181 ulTicksSinceLastDisplay++;
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182 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
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184 ulTicksSinceLastDisplay = 0;
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186 /* Has an error been found in any task? */
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188 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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190 xMessage.pcMessage = "ERROR - BLOCKQ";
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193 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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195 xMessage.pcMessage = "ERROR - BLOCKTIM";
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198 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
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200 xMessage.pcMessage = "ERROR - GENQ";
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203 if( xAreQueuePeekTasksStillRunning() != pdTRUE )
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205 xMessage.pcMessage = "ERROR - PEEKQ";
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208 if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
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210 xMessage.pcMessage = "ERROR - DYNAMIC";
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213 xMessage.xColumn++;
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215 /* Send the message to the LCD gatekeeper for display. */
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216 xHigherPriorityTaskWoken = pdFALSE;
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217 xQueueSendToBackFromISR( xLCDQueue, &xMessage, &xHigherPriorityTaskWoken );
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220 /*-----------------------------------------------------------*/
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222 void vLCDTask( void *pvParameters )
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224 xLCDMessage xMessage;
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226 /* Initialise the LCD and display a startup message. */
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230 LCD_gotoxy( 1, 1 );
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231 LCD_puts( "www.FreeRTOS.org" );
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235 /* Wait for a message to arrive that requires displaying. */
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236 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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238 /* Display the message. Print each message to a different position. */
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240 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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241 LCD_puts( xMessage.pcMessage );
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245 /*-----------------------------------------------------------*/
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247 static void prvSetupHardware( void )
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249 #ifdef RUN_FROM_RAM
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250 /* Remap the interrupt vectors to RAM if we are are running from RAM. */
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254 /* Disable the PLL. */
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256 PLLFEED = mainPLL_FEED_BYTE1;
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257 PLLFEED = mainPLL_FEED_BYTE2;
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259 /* Configure clock source. */
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260 SCS |= mainOSC_ENABLE;
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261 while( !( SCS & mainOSC_STAT ) );
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262 CLKSRCSEL = mainOSC_SELECT;
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264 /* Setup the PLL to multiply the XTAL input by 4. */
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265 PLLCFG = ( mainPLL_MUL | mainPLL_DIV );
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266 PLLFEED = mainPLL_FEED_BYTE1;
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267 PLLFEED = mainPLL_FEED_BYTE2;
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269 /* Turn on and wait for the PLL to lock... */
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270 PLLCON = mainPLL_ENABLE;
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271 PLLFEED = mainPLL_FEED_BYTE1;
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272 PLLFEED = mainPLL_FEED_BYTE2;
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273 CCLKCFG = mainCPU_CLK_DIV;
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274 while( !( PLLSTAT & mainPLL_LOCK ) );
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276 /* Connecting the clock. */
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277 PLLCON = mainPLL_CONNECT;
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278 PLLFEED = mainPLL_FEED_BYTE1;
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279 PLLFEED = mainPLL_FEED_BYTE2;
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280 while( !( PLLSTAT & mainPLL_CONNECTED ) );
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283 This code is commented out as the MAM does not work on the original revision
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284 LPC2368 chips. If using Rev B chips then you can increase the speed though
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285 the use of the MAM.
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287 Setup and turn on the MAM. Three cycle access is used due to the fast
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288 PLL used. It is possible faster overall performance could be obtained by
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289 tuning the MAM and PLL settings.
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291 MAMTIM = mainMAM_TIM_3;
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292 MAMCR = mainMAM_MODE_FULL;
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295 /* Setup the led's on the MCB2300 board */
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296 vParTestInitialise();
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