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@ -1,4 +1,3 @@
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#if 1
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/*
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FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd.
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@ -199,445 +198,3 @@ void vApplicationTickHook( void )
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}
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/*-----------------------------------------------------------*/
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#else
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/*
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FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* FreeRTOS tutorial books are available in pdf and paperback. *
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* Complete, revised, and edited pdf reference manuals are also *
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* available. *
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* *
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* Purchasing FreeRTOS documentation will not only help you, by *
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* ensuring you get running as quickly as possible and with an *
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* in-depth knowledge of how to use FreeRTOS, it will also help *
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* the FreeRTOS project to continue with its mission of providing *
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* professional grade, cross platform, de facto standard solutions *
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* for microcontrollers - completely free of charge! *
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* *
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* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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* *
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* Thank you for using FreeRTOS, and 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 modification to the GPL is included to allow you to
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distribute a combined work that includes FreeRTOS without being obliged to
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provide the source code for proprietary components outside of the FreeRTOS
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kernel. FreeRTOS is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or 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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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong? *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, training, latest information,
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license and contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool.
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Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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the code with commercial support, indemnification, and middleware, under
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the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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provide a safety engineered and independently SIL3 certified version under
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the SafeRTOS brand: http://www.SafeRTOS.com.
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*/
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/* Standard includes. */
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#include <stdio.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "timers.h"
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#include "queue.h"
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/* Library includes. */
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#include "gio.h"
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/* Demo application includes. */
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#include "TimerDemo.h"
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#include "countsem.h"
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#include "GenQTest.h"
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#include "dynamic.h"
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/*
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* "Check" callback function - Called each time the 'check' timer expires. The
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* check timer executes every five seconds. Its main function is to check that
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* all the standard demo tasks are still operational. Each time it executes it
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* sends a status code to the LCD task. The LCD task interprets the code and
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* displays an appropriate message - which will be PASS if no tasks have
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* reported any errors, or a message stating which task has reported an error.
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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 timer callback (described a above) to
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* determine that an error has occurred. The nature of the reg test tasks
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* necessitates that they are written in assembly code.
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*
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* Tick hook function - called inside the RTOS tick function, this simple
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* example does nothing but toggle an LED.
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*
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*/
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/* Codes sent within messages to the LCD task so the LCD task can interpret
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exactly what the message it just received was. These are sent in the
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cMessageID member of the message structure (defined below). */
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#define mainERROR_DYNAMIC_TASKS ( pdPASS + 1 )
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#define mainERROR_GEN_QUEUE_TEST ( pdPASS + 3 )
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#define mainERROR_REG_TEST ( pdPASS + 4 )
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#define mainERROR_TIMER_TEST ( pdPASS + 5 )
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#define mainERROR_COUNT_SEM_TEST ( pdPASS + 6 )
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/* Priorities used by the test and demo tasks. */
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#define mainPRINT_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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#define mainGENERIC_QUEUE_TEST_PRIORITY ( tskIDLE_PRIORITY )
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#define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainSTAT_TASK_PRIORITY ( tskIDLE_PRIORITY )
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/* Just used to ensure parameters are passed into tasks correctly. */
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#define mainTASK_PARAMETER_CHECK_VALUE ( ( void * ) 0xDEADBEEF )
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/* The length of the queue (the number of items the queue can hold) that is used
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to send messages from tasks and interrupts the the Print task. */
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#define mainQUEUE_LENGTH ( 5 )
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/* The base period used by the timer test tasks. */
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#define mainTIMER_TEST_PERIOD ( 50 / portTICK_RATE_MS )
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/* The frequency at which the check timer (described in the comments at the top
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of this file) will call its callback function. */
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#define mainCHECK_TIMER_PERIOD ( 5000UL / ( unsigned long ) portTICK_RATE_MS )
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/* A block time of 0 simply means "don't block". */
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#define mainDONT_BLOCK ( 0 )
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/*
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* The register check tasks, as decribed in the comments at the top of this
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* file. The nature of the tasks necessitates that they are written in
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* assembler.
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*/
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extern void vRegTestTask1(void *pvParameters);
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extern void vRegTestTask2(void *pvParameters);
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/*
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* Definition of the Print task described in the comments at the top of this
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* file.
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*/
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static void prvPrintTask( void *pvParameters );
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/*
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* Defines the 'check' functionality as described at the top of this file. This
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* function is the callback function for the 'check' timer. */
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static void vCheckTimerCallback( xTimerHandle xTimer );
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extern void vLedTask( void * pvParameters );
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void vStatsTask(void *pvParameters);
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/*-----------------------------------------------------------*/
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/* variable incremente in the IDLE hook */
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volatile unsigned usIdleCounter = 0;
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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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volatile unsigned usRegTest1Counter = 0, usRegTest2Counter = 0;
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/* The handle of the queue used to send messages from tasks and interrupts to
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the Print task. */
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static xQueueHandle xPrintQueue = NULL;
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/* The 'check' timer, as described at the top of this file. */
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static xTimerHandle xCheckTimer = NULL;
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/*-----------------------------------------------------------*/
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void main()
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{
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/* initalise DIO ports */
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gioInit();
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/* Create the queue used by tasks and interrupts to send strings to the
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print task. */
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xPrintQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
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/* If the queue could not be created then don't create any tasks that might
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attempt to use the queue. */
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if( xPrintQueue != NULL )
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{
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/* Create STATS task, this prints out a summary of running tasks every 15s */
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xTaskCreate(vStatsTask, (signed char *)"STATS..", 600, NULL, mainSTAT_TASK_PRIORITY, NULL);
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/* Create LED task, this will flash the LEDs on the USB stick */
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xTaskCreate(vLedTask, (signed char *)"LEDS...", configMINIMAL_STACK_SIZE, NULL, mainLED_TASK_PRIORITY, NULL);
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/* Create the standard demo tasks. */
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vStartDynamicPriorityTasks();
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vStartGenericQueueTasks( mainGENERIC_QUEUE_TEST_PRIORITY );
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vStartCountingSemaphoreTasks();
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/* Note that creating the timer test/demo tasks will fill the timer
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command queue. This is intentional, and forms part of the test the tasks
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perform. It does mean however that, after this function is called, no
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more timer commands can be sent until after the scheduler has been
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started (at which point the timer daemon will drained the timer command
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queue, freeing up space for more commands to be received). */
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vStartTimerDemoTask(mainTIMER_TEST_PERIOD);
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/* Create the Print and register test tasks. */
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xTaskCreate(prvPrintTask, (signed char *)"Print..", 500, mainTASK_PARAMETER_CHECK_VALUE, mainPRINT_TASK_PRIORITY, NULL );
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xTaskCreate(vRegTestTask1, (signed char *)"REG1...", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL);
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xTaskCreate(vRegTestTask2, (signed char *)"REG2...", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL);
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/* Create the 'check' timer - the timer that periodically calls the
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check function as described at the top of this file. Note that, for
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the reasons stated in the comments above the call to
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vStartTimerDemoTask(), that the check timer is not actually started
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until after the scheduler has been started. */
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xCheckTimer = xTimerCreate( ( const signed char * ) "Check Timer", mainCHECK_TIMER_PERIOD, pdTRUE, ( void * ) 0, vCheckTimerCallback );
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/* start FreeRTOS Scheduler */
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vTaskStartScheduler();
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}
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/* If all is well then this line will never be reached. If it is reached
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then it is likely that there was insufficient (FreeRTOS) heap memory space
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to create the idle task. This may have been trapped by the malloc() failed
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hook function, if one is configured. */
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for (;;);
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}
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/*-----------------------------------------------------------*/
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void vStatsTask(void *pvParameters)
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{
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/* Buffer used to hold the table of run time statistics. This is static so it
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does not overflow the task stack. */
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static signed char cStatsBuffer[ 1024 ];
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const portTickType x15Seconds = 15000 / portTICK_RATE_MS;
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printf("**** Task Statistics Started\n");
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for (;;)
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{
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vTaskDelay( x15Seconds );
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vTaskGetRunTimeStats( cStatsBuffer );
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printf("%s\n", cStatsBuffer );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvPrintTask( void *pvParameters )
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{
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unsigned long ulReceivedMessage;
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static signed char cPrintBuffer[ 50 ];
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printf( "**** Print Task Started\n" );
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/* Now the scheduler has been started (it must have been for this task to
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be running), start the check timer too. The call to xTimerStart() will
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block until the command has been accepted. */
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if( xCheckTimer != NULL )
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{
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xTimerStart( xCheckTimer, portMAX_DELAY );
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}
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/* First print out the number of bytes that remain in the FreeRTOS heap. This
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is done after a short delay to ensure all the demo tasks have created all
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the objects they are going to use. */
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vTaskDelay( mainTIMER_TEST_PERIOD * 10 );
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printf( "**** %d heap free\n", ( int ) xPortGetFreeHeapSize() );
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/* Just as a test of the port, and for no functional reason, check the task
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parameter contains its expected value. */
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if( pvParameters != mainTASK_PARAMETER_CHECK_VALUE )
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{
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printf("**** Invalid parameter ****\n\n");
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}
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for( ;; )
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{
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/* Wait for a message to be received. Using portMAX_DELAY as the block
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time will result in an indefinite wait provided INCLUDE_vTaskSuspend is
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set to 1 in FreeRTOSConfig.h, therefore there is no need to check the
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function return value and the function will only return when a value
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has been received. */
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xQueueReceive( xPrintQueue, &ulReceivedMessage, portMAX_DELAY );
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/* What is this message? What does it contain? */
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switch( ulReceivedMessage )
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{
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case pdPASS : sprintf( ( char * ) cPrintBuffer, "Status = PASS" );
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break;
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|
|
|
|
case mainERROR_DYNAMIC_TASKS : sprintf( ( char * ) cPrintBuffer, "Err: Dynamic tsks" );
|
|
|
|
|
break;
|
|
|
|
|
case mainERROR_GEN_QUEUE_TEST : sprintf( ( char * ) cPrintBuffer, "Error: Gen Q test" );
|
|
|
|
|
break;
|
|
|
|
|
case mainERROR_REG_TEST : sprintf( ( char * ) cPrintBuffer, "Error: Reg test" );
|
|
|
|
|
break;
|
|
|
|
|
case mainERROR_TIMER_TEST : sprintf( ( char * ) cPrintBuffer, "Error: Tmr test" );
|
|
|
|
|
break;
|
|
|
|
|
case mainERROR_COUNT_SEM_TEST : sprintf( ( char * ) cPrintBuffer, "Error: Count sem" );
|
|
|
|
|
break;
|
|
|
|
|
default : sprintf( ( char * ) cPrintBuffer, "Unknown status" );
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
/* Output the message that was placed into the cBuffer array within the
|
|
|
|
|
switch statement above, then move onto the next line ready for the next
|
|
|
|
|
message to arrive on the queue. */
|
|
|
|
|
printf( "**** Message Received: %s\n", cPrintBuffer );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
static void vCheckTimerCallback( xTimerHandle xTimer )
|
|
|
|
|
{
|
|
|
|
|
static unsigned short usLastRegTest1Counter = 0, usLastRegTest2Counter = 0;
|
|
|
|
|
|
|
|
|
|
/* Define the status message that is sent to the LCD task. By default the
|
|
|
|
|
status is PASS. */
|
|
|
|
|
unsigned long ulStatus = pdPASS;
|
|
|
|
|
|
|
|
|
|
/* This is the callback function used by the 'check' timer, as described
|
|
|
|
|
at the top of this file. */
|
|
|
|
|
|
|
|
|
|
/* The parameter is not used. */
|
|
|
|
|
( void ) xTimer;
|
|
|
|
|
|
|
|
|
|
/* See if the standard demo tasks are executing as expected, changing
|
|
|
|
|
the message that is sent to the LCD task from PASS to an error code if
|
|
|
|
|
any tasks set reports an error. */
|
|
|
|
|
if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_DYNAMIC_TASKS;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( xAreGenericQueueTasksStillRunning() != pdPASS )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_GEN_QUEUE_TEST;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( xAreCountingSemaphoreTasksStillRunning() != pdPASS )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_COUNT_SEM_TEST;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( xAreTimerDemoTasksStillRunning( ( portTickType ) mainCHECK_TIMER_PERIOD ) != pdPASS )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_TIMER_TEST;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Check the reg test tasks are still cycling. They will stop
|
|
|
|
|
incrementing their loop counters if they encounter an error. */
|
|
|
|
|
if( usRegTest1Counter == usLastRegTest1Counter )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_REG_TEST;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( usRegTest2Counter == usLastRegTest2Counter )
|
|
|
|
|
{
|
|
|
|
|
ulStatus = mainERROR_REG_TEST;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
usLastRegTest1Counter = usRegTest1Counter;
|
|
|
|
|
usLastRegTest2Counter = usRegTest2Counter;
|
|
|
|
|
|
|
|
|
|
/* This is called from a timer callback so must not block! */
|
|
|
|
|
xQueueSendToBack( xPrintQueue, &ulStatus, mainDONT_BLOCK );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
void vApplicationTickHook( void )
|
|
|
|
|
{
|
|
|
|
|
static unsigned long ulCounter = 0;
|
|
|
|
|
|
|
|
|
|
/* Is it time to toggle the pin again? */
|
|
|
|
|
ulCounter++;
|
|
|
|
|
|
|
|
|
|
/* Just periodically toggle a pin to show that the tick interrupt is
|
|
|
|
|
running. */
|
|
|
|
|
if( ( ulCounter & 0xff ) == 0 )
|
|
|
|
|
{
|
|
|
|
|
gioSetBit(gioPORTA, 0, 1);
|
|
|
|
|
gioSetBit(gioPORTA, 0, 0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
void vApplicationMallocFailedHook( void )
|
|
|
|
|
{
|
|
|
|
|
/* Called if a call to pvPortMalloc() fails because there is insufficient
|
|
|
|
|
free memory available in the FreeRTOS heap. pvPortMalloc() is called
|
|
|
|
|
internally by FreeRTOS API functions that create tasks, queues or
|
|
|
|
|
semaphores. */
|
|
|
|
|
taskDISABLE_INTERRUPTS();
|
|
|
|
|
for( ;; );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName )
|
|
|
|
|
{
|
|
|
|
|
/* Run time stack overflow checking is performed if
|
|
|
|
|
configconfigCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
|
|
|
|
|
function is called if a stack overflow is detected. */
|
|
|
|
|
taskDISABLE_INTERRUPTS();
|
|
|
|
|
for( ;; );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
void vApplicationIdleHook(void)
|
|
|
|
|
{
|
|
|
|
|
usIdleCounter++;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Richard Barry
13 years ago