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jeremybenn |
/*
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FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS books - available as PDF or paperback *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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/* ****************************************************************************
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* This project includes a lot of tasks and tests and is therefore complex.
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* If you would prefer a much simpler project to get started with then select
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* the 'Blinky' build configuration within the HEW IDE.
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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 standard demo application tasks,
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* which provide no particular functionality but do provide a good example of
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* how to use the FreeRTOS API. The tasks defined in flop.c are included in the
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* set of standard demo tasks to ensure the floating point unit gets some
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* exercise.
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*
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* In addition to the standard demo tasks, the following tasks and tests are
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* defined and/or created within this file:
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*
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* Webserver ("uIP") task - This serves a number of dynamically generated WEB
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* pages to a standard WEB browser. The IP and MAC addresses are configured by
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* constants defined at the bottom of FreeRTOSConfig.h. Use either a standard
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* Ethernet cable to connect through a hug, or a cross over (point to point)
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* cable to connect directly. Ensure the IP address used is compatible with the
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* IP address of the machine running the browser - the easiest way to achieve
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* this is to ensure the first three octets of the IP addresses are the same.
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*
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* "Reg test" tasks - These fill the registers with known values, then check
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* that each register still contains its expected value. Each task uses
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* different values. The tasks run with very low priority so get preempted
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* very frequently. A check variable is incremented on each iteration of the
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* test loop. A register containing an unexpected value is indicative of an
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* error in the context switching mechanism and will result in a branch to a
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* null loop - which in turn will prevent the check variable from incrementing
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* any further and allow the check task (described below) to determine that an
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* error has occurred. The nature of the reg test tasks necessitates that they
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* are written in assembly code.
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*
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* "Check" task - This only executes every five seconds but has a high priority
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* to ensure it gets processor time. Its main function is to check that all the
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* standard demo tasks are still operational. While no errors have been
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* discovered the check task will toggle LED 5 every 5 seconds - the toggle
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* rate increasing to 200ms being a visual indication that at least one task has
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* reported unexpected behaviour.
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*
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* "High frequency timer test" - A high frequency periodic interrupt is
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* generated using a timer - the interrupt is assigned a priority above
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* configMAX_SYSCALL_INTERRUPT_PRIORITY so should not be effected by anything
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* the kernel is doing. The frequency and priority of the interrupt, in
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* combination with other standard tests executed in this demo, should result
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* in interrupts nesting at least 3 and probably 4 deep. This test is only
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* included in build configurations that have the optimiser switched on. In
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* optimised builds the count of high frequency ticks is used as the time base
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* for the run time stats.
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*
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* *NOTE 1* If LED5 is toggling every 5 seconds then all the demo application
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* tasks are executing as expected and no errors have been reported in any
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* tasks. The toggle rate increasing to 200ms indicates that at least one task
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* has reported unexpected behaviour.
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*
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* *NOTE 2* vApplicationSetupTimerInterrupt() is called by the kernel to let
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* the application set up a timer to generate the tick interrupt. In this
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* example a compare match timer is used for this purpose.
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*
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* *NOTE 3* The CPU must be in Supervisor mode when the scheduler is started.
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* The PowerON_Reset_PC() supplied in resetprg.c with this demo has
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* Change_PSW_PM_to_UserMode() commented out to ensure this is the case.
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*
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* *NOTE 4* The IntQueue common demo tasks test interrupt nesting and make use
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* of all the 8bit timers (as two cascaded 16bit units).
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*/
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/* Hardware specific includes. */
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#include "iodefine.h"
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Standard demo includes. */
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#include "partest.h"
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#include "flash.h"
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#include "IntQueue.h"
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#include "BlockQ.h"
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#include "death.h"
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#include "integer.h"
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#include "blocktim.h"
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#include "semtest.h"
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#include "PollQ.h"
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#include "GenQTest.h"
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#include "QPeek.h"
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#include "recmutex.h"
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#include "flop.h"
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/* Values that are passed into the reg test tasks using the task parameter. The
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tasks check that the values are passed in correctly. */
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#define mainREG_TEST_1_PARAMETER ( 0x12121212UL )
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#define mainREG_TEST_2_PARAMETER ( 0x12345678UL )
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/* Priorities at which the tasks are created. */
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#define mainCHECK_TASK_PRIORITY ( configMAX_PRIORITIES - 1 )
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#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 1 )
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#define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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#define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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#define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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#define mainuIP_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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#define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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#define mainFLOP_TASK_PRIORITY ( tskIDLE_PRIORITY )
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/* The WEB server uses string handling functions, which in turn use a bit more
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stack than most of the other tasks. */
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#define mainuIP_STACK_SIZE ( configMINIMAL_STACK_SIZE * 3 )
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/* The LED toggled by the check task. */
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#define mainCHECK_LED ( 5 )
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/* The rate at which mainCHECK_LED will toggle when all the tasks are running
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without error. Controlled by the check task as described at the top of this
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file. */
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#define mainNO_ERROR_CYCLE_TIME ( 5000 / portTICK_RATE_MS )
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/* The rate at which mainCHECK_LED will toggle when an error has been reported
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by at least one task. Controlled by the check task as described at the top of
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this file. */
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#define mainERROR_CYCLE_TIME ( 200 / portTICK_RATE_MS )
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/*
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* vApplicationMallocFailedHook() will only be called if
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* configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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* function that will execute if a call to pvPortMalloc() fails.
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* pvPortMalloc() is called internally by the kernel whenever a task, queue or
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* semaphore is created. It is also called by various parts of the demo
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* application.
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*/
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void vApplicationMallocFailedHook( void );
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/*
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* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set to 1
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* in FreeRTOSConfig.h. It is a hook function that is called on each iteration
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* of the idle task. It is essential that code added to this hook function
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* never attempts to block in any way (for example, call xQueueReceive() with
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* a block time specified). If the application makes use of the vTaskDelete()
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* API function (as this demo application does) then it is also important that
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* vApplicationIdleHook() is permitted to return to its calling function because
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* it is the responsibility of the idle task to clean up memory allocated by the
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* kernel to any task that has since been deleted.
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*/
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void vApplicationIdleHook( void );
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/*
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* vApplicationStackOverflowHook() will only be called if
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* configCHECK_FOR_STACK_OVERFLOW is set to a non-zero value. The handle and
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* name of the offending task should be passed in the function parameters, but
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* it is possible that the stack overflow will have corrupted these - in which
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* case pxCurrentTCB can be inspected to find the same information.
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*/
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void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName );
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/*
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* The reg test tasks as described at the top of this file.
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*/
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static void prvRegTest1Task( void *pvParameters );
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static void prvRegTest2Task( void *pvParameters );
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/*
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* The actual implementation of the reg test functionality, which, because of
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* the direct register access, have to be in assembly.
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*/
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static void prvRegTest1Implementation( void ) __attribute__((naked));
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static void prvRegTest2Implementation( void ) __attribute__((naked));
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/*
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* The check task as described at the top of this file.
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*/
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static void prvCheckTask( void *pvParameters );
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/*
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* Contains the implementation of the WEB server.
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*/
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extern void vuIP_Task( void *pvParameters );
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/*-----------------------------------------------------------*/
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/* Variables that are incremented on each iteration of the reg test tasks -
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provided the tasks have not reported any errors. The check task inspects these
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variables to ensure they are still incrementing as expected. If a variable
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stops incrementing then it is likely that its associate task has stalled. */
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unsigned long ulRegTest1CycleCount = 0UL, ulRegTest2CycleCount = 0UL;
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/* The status message that is displayed at the bottom of the "task stats" web
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page, which is served by the uIP task. This will report any errors picked up
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by the reg test task. */
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static const char *pcStatusMessage = NULL;
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/*-----------------------------------------------------------*/
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int main(void)
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{
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extern void HardwareSetup( void );
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/* Renesas provided CPU configuration routine. The clocks are configured in
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here. */
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HardwareSetup();
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/* Turn all LEDs off. */
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vParTestInitialise();
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/* Start the reg test tasks which test the context switching mechanism. */
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xTaskCreate( prvRegTest1Task, ( signed char * ) "RegTst1", configMINIMAL_STACK_SIZE, ( void * ) mainREG_TEST_1_PARAMETER, tskIDLE_PRIORITY, NULL );
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xTaskCreate( prvRegTest2Task, ( signed char * ) "RegTst2", configMINIMAL_STACK_SIZE, ( void * ) mainREG_TEST_2_PARAMETER, tskIDLE_PRIORITY, NULL );
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/* The web server task. */
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xTaskCreate( vuIP_Task, ( signed char * ) "uIP", mainuIP_STACK_SIZE, NULL, mainuIP_TASK_PRIORITY, NULL );
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/* Start the check task as described at the top of this file. */
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xTaskCreate( prvCheckTask, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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/* Create the standard demo tasks. */
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vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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vCreateBlockTimeTasks();
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vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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vStartLEDFlashTasks( mainFLASH_TASK_PRIORITY );
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vStartQueuePeekTasks();
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vStartRecursiveMutexTasks();
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vStartInterruptQueueTasks();
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vStartMathTasks( mainFLOP_TASK_PRIORITY );
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/* The suicide tasks must be created last as they need to know how many
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tasks were running prior to their creation in order to ascertain whether
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or not the correct/expected number of tasks are running at any given time. */
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vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
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/* Start the tasks running. */
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vTaskStartScheduler();
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/* If all is well we will never reach here as the scheduler will now be
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running. If we do reach here then it is likely that there was insufficient
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heap available for the idle task to be created. */
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for( ;; );
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return 0;
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}
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/*-----------------------------------------------------------*/
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static void prvCheckTask( void *pvParameters )
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{
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static volatile unsigned long ulLastRegTest1CycleCount = 0UL, ulLastRegTest2CycleCount = 0UL;
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portTickType xNextWakeTime, xCycleFrequency = mainNO_ERROR_CYCLE_TIME;
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extern void vSetupHighFrequencyTimer( void );
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/* If this is being executed then the kernel has been started. Start the high
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|
|
frequency timer test as described at the top of this file. This is only
|
| 310 |
|
|
included in the optimised build configuration - otherwise it takes up too much
|
| 311 |
|
|
CPU time. */
|
| 312 |
|
|
#ifdef INCLUDE_HIGH_FREQUENCY_TIMER_TEST
|
| 313 |
|
|
vSetupHighFrequencyTimer();
|
| 314 |
|
|
#endif
|
| 315 |
|
|
|
| 316 |
|
|
/* Initialise xNextWakeTime - this only needs to be done once. */
|
| 317 |
|
|
xNextWakeTime = xTaskGetTickCount();
|
| 318 |
|
|
|
| 319 |
|
|
for( ;; )
|
| 320 |
|
|
{
|
| 321 |
|
|
/* Place this task in the blocked state until it is time to run again. */
|
| 322 |
|
|
vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );
|
| 323 |
|
|
|
| 324 |
|
|
/* Check the standard demo tasks are running without error. */
|
| 325 |
|
|
if( xAreGenericQueueTasksStillRunning() != pdTRUE )
|
| 326 |
|
|
{
|
| 327 |
|
|
pcStatusMessage = "Error: GenQueue";
|
| 328 |
|
|
}
|
| 329 |
|
|
else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
|
| 330 |
|
|
{
|
| 331 |
|
|
pcStatusMessage = "Error: QueuePeek\r\n";
|
| 332 |
|
|
}
|
| 333 |
|
|
else if( xAreBlockingQueuesStillRunning() != pdTRUE )
|
| 334 |
|
|
{
|
| 335 |
|
|
pcStatusMessage = "Error: BlockQueue\r\n";
|
| 336 |
|
|
}
|
| 337 |
|
|
else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
|
| 338 |
|
|
{
|
| 339 |
|
|
pcStatusMessage = "Error: BlockTime\r\n";
|
| 340 |
|
|
}
|
| 341 |
|
|
else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
|
| 342 |
|
|
{
|
| 343 |
|
|
pcStatusMessage = "Error: SemTest\r\n";
|
| 344 |
|
|
}
|
| 345 |
|
|
else if( xArePollingQueuesStillRunning() != pdTRUE )
|
| 346 |
|
|
{
|
| 347 |
|
|
pcStatusMessage = "Error: PollQueue\r\n";
|
| 348 |
|
|
}
|
| 349 |
|
|
else if( xIsCreateTaskStillRunning() != pdTRUE )
|
| 350 |
|
|
{
|
| 351 |
|
|
pcStatusMessage = "Error: Death\r\n";
|
| 352 |
|
|
}
|
| 353 |
|
|
else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
|
| 354 |
|
|
{
|
| 355 |
|
|
pcStatusMessage = "Error: IntMath\r\n";
|
| 356 |
|
|
}
|
| 357 |
|
|
else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
|
| 358 |
|
|
{
|
| 359 |
|
|
pcStatusMessage = "Error: RecMutex\r\n";
|
| 360 |
|
|
}
|
| 361 |
|
|
else if( xAreIntQueueTasksStillRunning() != pdPASS )
|
| 362 |
|
|
{
|
| 363 |
|
|
pcStatusMessage = "Error: IntQueue\r\n";
|
| 364 |
|
|
}
|
| 365 |
|
|
else if( xAreMathsTaskStillRunning() != pdPASS )
|
| 366 |
|
|
{
|
| 367 |
|
|
pcStatusMessage = "Error: Flop\r\n";
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
/* Check the reg test tasks are still cycling. They will stop incrementing
|
| 371 |
|
|
their loop counters if they encounter an error. */
|
| 372 |
|
|
if( ulRegTest1CycleCount == ulLastRegTest1CycleCount )
|
| 373 |
|
|
{
|
| 374 |
|
|
pcStatusMessage = "Error: RegTest1\r\n";
|
| 375 |
|
|
}
|
| 376 |
|
|
|
| 377 |
|
|
if( ulRegTest2CycleCount == ulLastRegTest2CycleCount )
|
| 378 |
|
|
{
|
| 379 |
|
|
pcStatusMessage = "Error: RegTest2\r\n";
|
| 380 |
|
|
}
|
| 381 |
|
|
|
| 382 |
|
|
ulLastRegTest1CycleCount = ulRegTest1CycleCount;
|
| 383 |
|
|
ulLastRegTest2CycleCount = ulRegTest2CycleCount;
|
| 384 |
|
|
|
| 385 |
|
|
/* Toggle the check LED to give an indication of the system status. If
|
| 386 |
|
|
the LED toggles every 5 seconds then everything is ok. A faster toggle
|
| 387 |
|
|
indicates an error. */
|
| 388 |
|
|
vParTestToggleLED( mainCHECK_LED );
|
| 389 |
|
|
|
| 390 |
|
|
/* Ensure the LED toggles at a faster rate if an error has occurred. */
|
| 391 |
|
|
if( pcStatusMessage != NULL )
|
| 392 |
|
|
{
|
| 393 |
|
|
/* Increase the rate at which this task cycles, which will increase the
|
| 394 |
|
|
rate at which mainCHECK_LED flashes to give visual feedback that an error
|
| 395 |
|
|
has occurred. */
|
| 396 |
|
|
xCycleFrequency = mainERROR_CYCLE_TIME;
|
| 397 |
|
|
}
|
| 398 |
|
|
}
|
| 399 |
|
|
}
|
| 400 |
|
|
/*-----------------------------------------------------------*/
|
| 401 |
|
|
|
| 402 |
|
|
/* The RX port uses this callback function to configure its tick interrupt.
|
| 403 |
|
|
This allows the application to choose the tick interrupt source. */
|
| 404 |
|
|
void vApplicationSetupTimerInterrupt( void )
|
| 405 |
|
|
{
|
| 406 |
|
|
/* Enable compare match timer 0. */
|
| 407 |
|
|
MSTP( CMT0 ) = 0;
|
| 408 |
|
|
|
| 409 |
|
|
/* Interrupt on compare match. */
|
| 410 |
|
|
CMT0.CMCR.BIT.CMIE = 1;
|
| 411 |
|
|
|
| 412 |
|
|
/* Set the compare match value. */
|
| 413 |
|
|
CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );
|
| 414 |
|
|
|
| 415 |
|
|
/* Divide the PCLK by 8. */
|
| 416 |
|
|
CMT0.CMCR.BIT.CKS = 0;
|
| 417 |
|
|
|
| 418 |
|
|
/* Enable the interrupt... */
|
| 419 |
|
|
_IEN( _CMT0_CMI0 ) = 1;
|
| 420 |
|
|
|
| 421 |
|
|
/* ...and set its priority to the application defined kernel priority. */
|
| 422 |
|
|
_IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;
|
| 423 |
|
|
|
| 424 |
|
|
/* Start the timer. */
|
| 425 |
|
|
CMT.CMSTR0.BIT.STR0 = 1;
|
| 426 |
|
|
}
|
| 427 |
|
|
/*-----------------------------------------------------------*/
|
| 428 |
|
|
|
| 429 |
|
|
/* This function is explained by the comments above its prototype at the top
|
| 430 |
|
|
of this file. */
|
| 431 |
|
|
void vApplicationMallocFailedHook( void )
|
| 432 |
|
|
{
|
| 433 |
|
|
for( ;; );
|
| 434 |
|
|
}
|
| 435 |
|
|
/*-----------------------------------------------------------*/
|
| 436 |
|
|
|
| 437 |
|
|
/* This function is explained by the comments above its prototype at the top
|
| 438 |
|
|
of this file. */
|
| 439 |
|
|
void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName )
|
| 440 |
|
|
{
|
| 441 |
|
|
for( ;; );
|
| 442 |
|
|
}
|
| 443 |
|
|
/*-----------------------------------------------------------*/
|
| 444 |
|
|
|
| 445 |
|
|
/* This function is explained by the comments above its prototype at the top
|
| 446 |
|
|
of this file. */
|
| 447 |
|
|
void vApplicationIdleHook( void )
|
| 448 |
|
|
{
|
| 449 |
|
|
}
|
| 450 |
|
|
/*-----------------------------------------------------------*/
|
| 451 |
|
|
|
| 452 |
|
|
/* This function is explained in the comments at the top of this file. */
|
| 453 |
|
|
static void prvRegTest1Task( void *pvParameters )
|
| 454 |
|
|
{
|
| 455 |
|
|
if( ( ( unsigned long ) pvParameters ) != mainREG_TEST_1_PARAMETER )
|
| 456 |
|
|
{
|
| 457 |
|
|
/* The parameter did not contain the expected value. */
|
| 458 |
|
|
for( ;; )
|
| 459 |
|
|
{
|
| 460 |
|
|
/* Stop the tick interrupt so its obvious something has gone wrong. */
|
| 461 |
|
|
taskDISABLE_INTERRUPTS();
|
| 462 |
|
|
}
|
| 463 |
|
|
}
|
| 464 |
|
|
|
| 465 |
|
|
/* This is an asm function that never returns. */
|
| 466 |
|
|
prvRegTest1Implementation();
|
| 467 |
|
|
}
|
| 468 |
|
|
/*-----------------------------------------------------------*/
|
| 469 |
|
|
|
| 470 |
|
|
/* This function is explained in the comments at the top of this file. */
|
| 471 |
|
|
static void prvRegTest2Task( void *pvParameters )
|
| 472 |
|
|
{
|
| 473 |
|
|
if( ( ( unsigned long ) pvParameters ) != mainREG_TEST_2_PARAMETER )
|
| 474 |
|
|
{
|
| 475 |
|
|
/* The parameter did not contain the expected value. */
|
| 476 |
|
|
for( ;; )
|
| 477 |
|
|
{
|
| 478 |
|
|
/* Stop the tick interrupt so its obvious something has gone wrong. */
|
| 479 |
|
|
taskDISABLE_INTERRUPTS();
|
| 480 |
|
|
}
|
| 481 |
|
|
}
|
| 482 |
|
|
|
| 483 |
|
|
/* This is an asm function that never returns. */
|
| 484 |
|
|
prvRegTest2Implementation();
|
| 485 |
|
|
}
|
| 486 |
|
|
/*-----------------------------------------------------------*/
|
| 487 |
|
|
|
| 488 |
|
|
char *pcGetTaskStatusMessage( void )
|
| 489 |
|
|
{
|
| 490 |
|
|
/* Not bothered about a critical section here although technically because of
|
| 491 |
|
|
the task priorities the pointer could change it will be atomic if not near
|
| 492 |
|
|
atomic and its not critical. */
|
| 493 |
|
|
if( pcStatusMessage == NULL )
|
| 494 |
|
|
{
|
| 495 |
|
|
return "All tasks running without error";
|
| 496 |
|
|
}
|
| 497 |
|
|
else
|
| 498 |
|
|
{
|
| 499 |
|
|
return ( char * ) pcStatusMessage;
|
| 500 |
|
|
}
|
| 501 |
|
|
}
|
| 502 |
|
|
/*-----------------------------------------------------------*/
|
| 503 |
|
|
|
| 504 |
|
|
/* This function is explained in the comments at the top of this file. */
|
| 505 |
|
|
static void prvRegTest1Implementation( void )
|
| 506 |
|
|
{
|
| 507 |
|
|
__asm volatile
|
| 508 |
|
|
(
|
| 509 |
|
|
/* Put a known value in each register. */
|
| 510 |
|
|
"MOV #1, R1 \n" \
|
| 511 |
|
|
"MOV #2, R2 \n" \
|
| 512 |
|
|
"MOV #3, R3 \n" \
|
| 513 |
|
|
"MOV #4, R4 \n" \
|
| 514 |
|
|
"MOV #5, R5 \n" \
|
| 515 |
|
|
"MOV #6, R6 \n" \
|
| 516 |
|
|
"MOV #7, R7 \n" \
|
| 517 |
|
|
"MOV #8, R8 \n" \
|
| 518 |
|
|
"MOV #9, R9 \n" \
|
| 519 |
|
|
"MOV #10, R10 \n" \
|
| 520 |
|
|
"MOV #11, R11 \n" \
|
| 521 |
|
|
"MOV #12, R12 \n" \
|
| 522 |
|
|
"MOV #13, R13 \n" \
|
| 523 |
|
|
"MOV #14, R14 \n" \
|
| 524 |
|
|
"MOV #15, R15 \n" \
|
| 525 |
|
|
|
| 526 |
|
|
/* Loop, checking each itteration that each register still contains the
|
| 527 |
|
|
expected value. */
|
| 528 |
|
|
"TestLoop1: \n" \
|
| 529 |
|
|
|
| 530 |
|
|
/* Push the registers that are going to get clobbered. */
|
| 531 |
|
|
"PUSHM R14-R15 \n" \
|
| 532 |
|
|
|
| 533 |
|
|
/* Increment the loop counter to show this task is still getting CPU time. */
|
| 534 |
|
|
"MOV #_ulRegTest1CycleCount, R14 \n" \
|
| 535 |
|
|
"MOV [ R14 ], R15 \n" \
|
| 536 |
|
|
"ADD #1, R15 \n" \
|
| 537 |
|
|
"MOV R15, [ R14 ] \n" \
|
| 538 |
|
|
|
| 539 |
|
|
/* Yield to extend the test coverage. Set the bit in the ITU SWINTR register. */
|
| 540 |
|
|
"MOV #1, R14 \n" \
|
| 541 |
|
|
"MOV #0872E0H, R15 \n" \
|
| 542 |
|
|
"MOV.B R14, [R15] \n" \
|
| 543 |
|
|
"NOP \n" \
|
| 544 |
|
|
"NOP \n" \
|
| 545 |
|
|
|
| 546 |
|
|
/* Restore the clobbered registers. */
|
| 547 |
|
|
"POPM R14-R15 \n" \
|
| 548 |
|
|
|
| 549 |
|
|
/* Now compare each register to ensure it still contains the value that was
|
| 550 |
|
|
set before this loop was entered. */
|
| 551 |
|
|
"CMP #1, R1 \n" \
|
| 552 |
|
|
"BNE RegTest1Error \n" \
|
| 553 |
|
|
"CMP #2, R2 \n" \
|
| 554 |
|
|
"BNE RegTest1Error \n" \
|
| 555 |
|
|
"CMP #3, R3 \n" \
|
| 556 |
|
|
"BNE RegTest1Error \n" \
|
| 557 |
|
|
"CMP #4, R4 \n" \
|
| 558 |
|
|
"BNE RegTest1Error \n" \
|
| 559 |
|
|
"CMP #5, R5 \n" \
|
| 560 |
|
|
"BNE RegTest1Error \n" \
|
| 561 |
|
|
"CMP #6, R6 \n" \
|
| 562 |
|
|
"BNE RegTest1Error \n" \
|
| 563 |
|
|
"CMP #7, R7 \n" \
|
| 564 |
|
|
"BNE RegTest1Error \n" \
|
| 565 |
|
|
"CMP #8, R8 \n" \
|
| 566 |
|
|
"BNE RegTest1Error \n" \
|
| 567 |
|
|
"CMP #9, R9 \n" \
|
| 568 |
|
|
"BNE RegTest1Error \n" \
|
| 569 |
|
|
"CMP #10, R10 \n" \
|
| 570 |
|
|
"BNE RegTest1Error \n" \
|
| 571 |
|
|
"CMP #11, R11 \n" \
|
| 572 |
|
|
"BNE RegTest1Error \n" \
|
| 573 |
|
|
"CMP #12, R12 \n" \
|
| 574 |
|
|
"BNE RegTest1Error \n" \
|
| 575 |
|
|
"CMP #13, R13 \n" \
|
| 576 |
|
|
"BNE RegTest1Error \n" \
|
| 577 |
|
|
"CMP #14, R14 \n" \
|
| 578 |
|
|
"BNE RegTest1Error \n" \
|
| 579 |
|
|
"CMP #15, R15 \n" \
|
| 580 |
|
|
"BNE RegTest1Error \n" \
|
| 581 |
|
|
|
| 582 |
|
|
/* All comparisons passed, start a new itteratio of this loop. */
|
| 583 |
|
|
"BRA TestLoop1 \n" \
|
| 584 |
|
|
|
| 585 |
|
|
"RegTest1Error: \n" \
|
| 586 |
|
|
/* A compare failed, just loop here so the loop counter stops incrementing
|
| 587 |
|
|
- causing the check task to indicate the error. */
|
| 588 |
|
|
"BRA RegTest1Error "
|
| 589 |
|
|
);
|
| 590 |
|
|
}
|
| 591 |
|
|
/*-----------------------------------------------------------*/
|
| 592 |
|
|
|
| 593 |
|
|
/* This function is explained in the comments at the top of this file. */
|
| 594 |
|
|
static void prvRegTest2Implementation( void )
|
| 595 |
|
|
{
|
| 596 |
|
|
__asm volatile
|
| 597 |
|
|
(
|
| 598 |
|
|
/* Put a known value in each register. */
|
| 599 |
|
|
"MOV #10H, R1 \n" \
|
| 600 |
|
|
"MOV #20H, R2 \n" \
|
| 601 |
|
|
"MOV #30H, R3 \n" \
|
| 602 |
|
|
"MOV #40H, R4 \n" \
|
| 603 |
|
|
"MOV #50H, R5 \n" \
|
| 604 |
|
|
"MOV #60H, R6 \n" \
|
| 605 |
|
|
"MOV #70H, R7 \n" \
|
| 606 |
|
|
"MOV #80H, R8 \n" \
|
| 607 |
|
|
"MOV #90H, R9 \n" \
|
| 608 |
|
|
"MOV #100H, R10 \n" \
|
| 609 |
|
|
"MOV #110H, R11 \n" \
|
| 610 |
|
|
"MOV #120H, R12 \n" \
|
| 611 |
|
|
"MOV #130H, R13 \n" \
|
| 612 |
|
|
"MOV #140H, R14 \n" \
|
| 613 |
|
|
"MOV #150H, R15 \n" \
|
| 614 |
|
|
|
| 615 |
|
|
/* Loop, checking each itteration that each register still contains the
|
| 616 |
|
|
expected value. */
|
| 617 |
|
|
"TestLoop2: \n" \
|
| 618 |
|
|
|
| 619 |
|
|
/* Push the registers that are going to get clobbered. */
|
| 620 |
|
|
"PUSHM R14-R15 \n" \
|
| 621 |
|
|
|
| 622 |
|
|
/* Increment the loop counter to show this task is still getting CPU time. */
|
| 623 |
|
|
"MOV #_ulRegTest2CycleCount, R14 \n" \
|
| 624 |
|
|
"MOV [ R14 ], R15 \n" \
|
| 625 |
|
|
"ADD #1, R15 \n" \
|
| 626 |
|
|
"MOV R15, [ R14 ] \n" \
|
| 627 |
|
|
|
| 628 |
|
|
/* Restore the clobbered registers. */
|
| 629 |
|
|
"POPM R14-R15 \n" \
|
| 630 |
|
|
|
| 631 |
|
|
/* Now compare each register to ensure it still contains the value that was
|
| 632 |
|
|
set before this loop was entered. */
|
| 633 |
|
|
"CMP #10H, R1 \n" \
|
| 634 |
|
|
"BNE RegTest2Error \n" \
|
| 635 |
|
|
"CMP #20H, R2 \n" \
|
| 636 |
|
|
"BNE RegTest2Error \n" \
|
| 637 |
|
|
"CMP #30H, R3 \n" \
|
| 638 |
|
|
"BNE RegTest2Error \n" \
|
| 639 |
|
|
"CMP #40H, R4 \n" \
|
| 640 |
|
|
"BNE RegTest2Error \n" \
|
| 641 |
|
|
"CMP #50H, R5 \n" \
|
| 642 |
|
|
"BNE RegTest2Error \n" \
|
| 643 |
|
|
"CMP #60H, R6 \n" \
|
| 644 |
|
|
"BNE RegTest2Error \n" \
|
| 645 |
|
|
"CMP #70H, R7 \n" \
|
| 646 |
|
|
"BNE RegTest2Error \n" \
|
| 647 |
|
|
"CMP #80H, R8 \n" \
|
| 648 |
|
|
"BNE RegTest2Error \n" \
|
| 649 |
|
|
"CMP #90H, R9 \n" \
|
| 650 |
|
|
"BNE RegTest2Error \n" \
|
| 651 |
|
|
"CMP #100H, R10 \n" \
|
| 652 |
|
|
"BNE RegTest2Error \n" \
|
| 653 |
|
|
"CMP #110H, R11 \n" \
|
| 654 |
|
|
"BNE RegTest2Error \n" \
|
| 655 |
|
|
"CMP #120H, R12 \n" \
|
| 656 |
|
|
"BNE RegTest2Error \n" \
|
| 657 |
|
|
"CMP #130H, R13 \n" \
|
| 658 |
|
|
"BNE RegTest2Error \n" \
|
| 659 |
|
|
"CMP #140H, R14 \n" \
|
| 660 |
|
|
"BNE RegTest2Error \n" \
|
| 661 |
|
|
"CMP #150H, R15 \n" \
|
| 662 |
|
|
"BNE RegTest2Error \n" \
|
| 663 |
|
|
|
| 664 |
|
|
/* All comparisons passed, start a new itteratio of this loop. */
|
| 665 |
|
|
"BRA TestLoop2 \n" \
|
| 666 |
|
|
|
| 667 |
|
|
"RegTest2Error: \n" \
|
| 668 |
|
|
/* A compare failed, just loop here so the loop counter stops incrementing
|
| 669 |
|
|
- causing the check task to indicate the error. */
|
| 670 |
|
|
"BRA RegTest2Error "
|
| 671 |
|
|
);
|
| 672 |
|
|
}
|
| 673 |
|
|
|
