2 FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 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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28 Please ensure to read the configuration and relevant port sections of the
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29 online documentation.
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31 +++ http://www.FreeRTOS.org +++
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32 Documentation, latest information, license and contact details.
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34 +++ http://www.SafeRTOS.com +++
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35 A version that is certified for use in safety critical systems.
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37 +++ http://www.OpenRTOS.com +++
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38 Commercial support, development, porting, licensing and training services.
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40 ***************************************************************************
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44 * Creates all the application tasks, then starts the scheduler.
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46 * A task is also created called "uIP". This executes the uIP stack and small
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47 * WEB server sample. All the other tasks are from the set of standard
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48 * demo tasks. The WEB documentation provides more details of the standard
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49 * demo application tasks.
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51 * Main.c also creates a task called "Check". This only executes every three
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52 * seconds but has the highest priority so is guaranteed to get processor time.
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53 * Its main function is to check the status of all the other demo application
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54 * tasks. LED mainCHECK_LED is toggled every three seconds by the check task
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55 * should no error conditions be detected in any of the standard demo tasks.
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56 * The toggle rate increasing to 500ms indicates that at least one error has
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61 /* Standard includes. */
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65 /* Scheduler includes. */
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66 #include "FreeRTOS.h"
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69 /* Demo application includes. */
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70 #include "partest.h"
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72 #include "dynamic.h"
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73 #include "semtest.h"
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75 #include "integer.h"
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79 #include "uip_task.h"
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81 /*-----------------------------------------------------------*/
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83 /* Priorities/stacks for the demo application tasks. */
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84 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 1 )
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85 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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86 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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87 #define mainUIP_PRIORITY ( tskIDLE_PRIORITY + 3 )
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88 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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89 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 1 )
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90 #define mainDEATH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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91 #define mainUIP_TASK_STACK_SIZE ( 250 )
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93 /* The rate at which the on board LED will toggle when there is/is not an
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95 #define mainNO_ERROR_FLASH_PERIOD ( ( portTickType ) 3000 / portTICK_RATE_MS )
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96 #define mainERROR_FLASH_PERIOD ( ( portTickType ) 500 / portTICK_RATE_MS )
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98 /* The LED used by the check task to indicate the system status. */
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99 #define mainCHECK_LED ( 3 )
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100 /*-----------------------------------------------------------*/
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103 * Checks that all the demo application tasks are still executing without error
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104 * - as described at the top of the file.
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106 static portLONG prvCheckOtherTasksAreStillRunning( void );
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109 * The task that executes at the highest priority and calls
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110 * prvCheckOtherTasksAreStillRunning(). See the description at the top
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113 static void vErrorChecks( void *pvParameters );
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116 * Configure the processor for use with the Atmel demo board. This is very
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117 * minimal as most of the setup is performed in the startup code.
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119 static void prvSetupHardware( void );
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121 /*-----------------------------------------------------------*/
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124 * Starts all the other tasks, then starts the scheduler.
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128 /* Configure the processor. */
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129 prvSetupHardware();
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131 /* Setup the port used to flash the LED's. */
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132 vParTestInitialise();
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134 /* Start the task that handles the TCP/IP and WEB server functionality. */
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135 xTaskCreate( vuIP_TASK, "uIP", mainUIP_TASK_STACK_SIZE, NULL, mainUIP_PRIORITY, NULL );
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137 /* Start the demo/test application tasks. These are created in addition
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138 to the TCP/IP task for demonstration and test purposes. */
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139 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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140 vStartDynamicPriorityTasks();
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141 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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142 vStartLEDFlashTasks( mainFLASH_PRIORITY );
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143 vStartIntegerMathTasks( tskIDLE_PRIORITY );
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144 vStartMathTasks( tskIDLE_PRIORITY );
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145 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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147 /* Start the check task - which is defined in this file. */
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148 xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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150 /* Must be last to get created. */
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151 vCreateSuicidalTasks( mainDEATH_PRIORITY );
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153 /* Now all the tasks have been started - start the scheduler. */
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154 vTaskStartScheduler();
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156 /* Should never reach here because the tasks should now be executing! */
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159 /*-----------------------------------------------------------*/
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161 static void prvSetupHardware( void )
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163 /* When using the JTAG debugger the hardware is not always initialised to
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164 the correct default state. This line just ensures that this does not
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165 cause all interrupts to be masked at the start. */
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166 AT91C_BASE_AIC->AIC_EOICR = 0;
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168 /* Most setup is performed by the low level init function called from the
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171 Configure the PIO Lines corresponding to LED1 to LED4 to be outputs as
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172 well as the UART Tx line. */
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173 AT91F_PIO_CfgOutput( AT91C_BASE_PIOB, LED_MASK );
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175 /* Enable the peripheral clock. */
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176 AT91F_PMC_EnablePeriphClock( AT91C_BASE_PMC, 1 << AT91C_ID_PIOA );
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177 AT91F_PMC_EnablePeriphClock( AT91C_BASE_PMC, 1 << AT91C_ID_PIOB ) ;
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178 AT91F_PMC_EnablePeriphClock( AT91C_BASE_PMC, 1 << AT91C_ID_EMAC ) ;
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180 /*-----------------------------------------------------------*/
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182 static void vErrorChecks( void *pvParameters )
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184 portTickType xDelayPeriod = mainNO_ERROR_FLASH_PERIOD;
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185 portTickType xLastWakeTime;
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187 /* Initialise xLastWakeTime to ensure the first call to vTaskDelayUntil()
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188 functions correctly. */
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189 xLastWakeTime = xTaskGetTickCount();
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191 /* Cycle for ever, delaying then checking all the other tasks are still
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192 operating without error. If an error is detected then the delay period
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193 is decreased from mainNO_ERROR_FLASH_PERIOD to mainERROR_FLASH_PERIOD so
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194 the Check LED flash rate will increase. */
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197 /* Delay until it is time to execute again. The delay period is
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198 shorter following an error. */
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199 vTaskDelayUntil( &xLastWakeTime, xDelayPeriod );
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201 /* Check all the standard demo application tasks are executing without
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203 if( prvCheckOtherTasksAreStillRunning() != pdPASS )
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205 /* An error has been detected in one of the tasks - flash faster. */
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206 xDelayPeriod = mainERROR_FLASH_PERIOD;
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209 vParTestToggleLED( mainCHECK_LED );
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212 /*-----------------------------------------------------------*/
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214 static portLONG prvCheckOtherTasksAreStillRunning( void )
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216 portLONG lReturn = ( portLONG ) pdPASS;
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219 /* Check all the demo tasks (other than the flash tasks) to ensure
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220 that they are all still running, and that none of them have detected
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223 if( xArePollingQueuesStillRunning() != pdTRUE )
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225 lReturn = ( portLONG ) pdFAIL;
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228 if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
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230 lReturn = ( portLONG ) pdFAIL;
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233 if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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235 lReturn = ( portLONG ) pdFAIL;
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238 if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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240 lReturn = ( portLONG ) pdFAIL;
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243 if( xAreMathsTaskStillRunning() != pdTRUE )
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245 lReturn = ( portLONG ) pdFAIL;
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248 if( xAreBlockingQueuesStillRunning() != pdTRUE )
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250 lReturn = ( portLONG ) pdFAIL;
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253 if( xIsCreateTaskStillRunning() != pdTRUE )
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255 lReturn = ( portLONG ) pdFAIL;
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