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/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
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/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
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/* ELIGIBILITY FOR ANY PURPOSES. */
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/* (C) Fujitsu Microelectronics Europe GmbH */
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/*------------------------------------------------------------------------
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MAIN.C
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- description
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- See README.TXT for project description and disclaimer.
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-------------------------------------------------------------------------*/
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/*
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FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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FreeRTOS.org is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS.org is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS.org; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes FreeRTOS.org, without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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+++ http://www.FreeRTOS.org +++
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Documentation, latest information, license and contact details.
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+++ http://www.SafeRTOS.com +++
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A version that is certified for use in safety critical systems.
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+++ http://www.OpenRTOS.com +++
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Commercial support, development, porting, licensing and training services.
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***************************************************************************
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*/
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/*
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* Creates all the demo application tasks, then starts the scheduler. The WEB
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* documentation provides more details of the demo application tasks.
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*
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* Main.c also creates a task called "Check". This only executes every three
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* seconds but has the highest priority so is guaranteed to get processor time.
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* Its main function is to check that all the other tasks are still operational.
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* Each task (other than the "flash" tasks) maintains a unique count that is
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* incremented each time the task successfully completes its function. Should
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* any error occur within such a task the count is permanently halted. The
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* check task inspects the count of each task to ensure it has changed since
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* the last time the check task executed. If all the count variables have
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* changed all the tasks are still executing error free, and the check task
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* toggles the onboard LED. Should any task contain an error at any time
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* In addition to the standard demo tasks, the follow demo specific tasks are
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* create:
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*
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* The "Check" task. This only executes every three seconds but has the highest
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* priority so is guaranteed to get processor time. Its main function is to
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* check that all the other tasks are still operational. Most tasks maintain
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* a unique count that is incremented each time the task successfully completes
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* its function. Should any error occur within such a task the count is
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* permanently halted. The check task inspects the count of each task to ensure
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* it has changed since the last time the check task executed. If all the count
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* variables have changed all the tasks are still executing error free, and the
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* check task toggles the onboard LED. Should any task contain an error at any time
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* the LED toggle rate will change from 3 seconds to 500ms.
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*
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* The "Register Check" tasks. These tasks fill the CPU registers with known
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* values, then check that each register still contains the expected value 0 the
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* discovery of an unexpected value being indicative of an error in the RTOS
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* context switch mechanism. The register check tasks operate at low priority
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* so are switched in and out frequently.
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*
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* The "Trace Utility" task. This can be used to obtain trace and debug
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* information via UART5.
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*/
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@ -72,7 +114,7 @@
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top of the page. When the system is operating error free the 'Check' task
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toggles an LED every three seconds. If an error is discovered in any task the
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rate is increased to 500 milliseconds. [in this case the '*' characters on the
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LCD represent LED's]*/
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LCD represent LEDs]*/
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#define mainNO_ERROR_CHECK_DELAY ( ( portTickType ) 3000 / portTICK_RATE_MS )
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#define mainERROR_CHECK_DELAY ( ( portTickType ) 500 / portTICK_RATE_MS )
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@ -94,7 +136,7 @@ LCD represent LED's]*/
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* The function that implements the Check task. See the comments at the head
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* of the page for implementation details.
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*/
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static void vErrorChecks( void *pvParameters );
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static void prvErrorChecks( void *pvParameters );
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/*
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* Called by the Check task. Returns pdPASS if all the other tasks are found
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@ -147,8 +189,9 @@ void main(void)
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vCreateBlockTimeTasks();
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/* Start the 'Check' task which is defined in this file. */
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xTaskCreate( vErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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xTaskCreate( prvErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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/* Start the 'Register Test' tasks as described at the top of this file. */
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xTaskCreate( vFirstRegisterTestTask, ( signed portCHAR * ) "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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xTaskCreate( vSecondRegisterTestTask, ( signed portCHAR * ) "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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@ -176,7 +219,7 @@ void main(void)
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}
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/*-----------------------------------------------------------*/
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static void vErrorChecks( void *pvParameters )
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static void prvErrorChecks( void *pvParameters )
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{
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portTickType xDelayPeriod = mainNO_ERROR_CHECK_DELAY, xLastExecutionTime;
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@ -292,6 +335,8 @@ static unsigned portLONG ulLastRegTest1Counter = 0UL, ulLastRegTest2Counter = 0U
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lReturn = pdFAIL;
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}
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/* Record the current values of the register check cycle counters so we
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can ensure they are still running the next time this function is called. */
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ulLastRegTest1Counter = ulRegTest1Counter;
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ulLastRegTest2Counter = ulRegTest2Counter;
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@ -317,29 +362,29 @@ static void prvSetupHardware( void )
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}
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/*-----------------------------------------------------------*/
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/* The below callback function is called from Delayed ISR if configUSE_IDLE_HOOK
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is configured as 1. */
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/* Idle hook function. */
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#if configUSE_IDLE_HOOK == 1
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void vApplicationIdleHook( void )
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{
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/* Are we using the idle task to kick the watchdog? */
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/* Are we using the idle task to kick the watchdog? See watchdog.h
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for watchdog kicking options. Note this is for demonstration only
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and is not a suggested method of servicing the watchdog in a real
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application. */
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#if WATCHDOG == WTC_IN_IDLE
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Kick_Watchdog();
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#endif
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#if configUSE_CO_ROUTINES == 1
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vCoRoutineSchedule();
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#endif
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}
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#endif
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/*-----------------------------------------------------------*/
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/*
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The below callback function is called from Tick ISR if configUSE_TICK_HOOK
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is configured as 1. */
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/* Tick hook function. */
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#if configUSE_TICK_HOOK == 1
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void vApplicationTickHook( void )
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{
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/* Are we using the tick to kick the watchdog? See watchdog.h
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for watchdog kicking options. Note this is for demonstration
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only and is not a suggested method of servicing the watchdog in
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a real application. */
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#if WATCHDOG == WTC_IN_TICK
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Kick_Watchdog();
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#endif
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Richard Barry
17 years ago