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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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/* Environment includes. */
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#include <targets/LPC2368.h>
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "queue.h"
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#include "semphr.h"
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/* Demo app includes. */
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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 "portlcd.h"
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#include "flash.h"
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#include "partest.h"
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#include "semtest.h"
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#include "PollQ.h"
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/* Demo application definitions. */
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#define mainQUEUE_SIZE ( 3 )
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#define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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#define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 )
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/* Task priorities. */
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#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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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 mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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#define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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/*
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* Checks the status of all the demo tasks then prints a message to the
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* CrossStudio terminal IO windows. The message will be either PASS or FAIL
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* depending on the status of the demo applications tasks. A FAIL status will
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* be latched.
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*
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* Messages are not written directly to the terminal, but passed to vPrintTask
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* via a queue.
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*/
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static void vCheckTask( void *pvParameters );
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/*
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* The task that handles the uIP stack. All TCP/IP processing is performed in
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* this task.
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*/
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extern void vuIP_Task( void *pvParameters );
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/*
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* The LCD is written two by more than one task so is controlled by a
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* 'gatekeeper' task. This is the only task that is actually permitted to
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* access the LCD directly. Other tasks wanting to display a message send
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* the message to the gatekeeper.
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*/
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static void vLCDTask( void *pvParameters );
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/* The queue used to send messages to the LCD task. */
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xQueueHandle xLCDQueue;
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/*-----------------------------------------------------------*/
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int main (void)
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{
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/* Setup the led's on the MCB2300 board */
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vParTestInitialise();
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/* Create the queue used by the LCD task. Messages for display on the LCD
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are received via this queue. */
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xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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/* Create the lwIP task. This uses the lwIP RTOS abstraction layer.*/
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xTaskCreate( vuIP_Task, ( signed char * ) "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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/* Start the standard demo tasks - these serve no useful purpose other than
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to demonstrate the FreeRTOS API being used and to test the port. */
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vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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vCreateBlockTimeTasks();
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vStartLEDFlashTasks( mainFLASH_PRIORITY );
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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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/* Start the tasks defined within this file/specific to this demo. */
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xTaskCreate( vCheckTask, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
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xTaskCreate( vLCDTask, ( signed char * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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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 scheduler. */
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vTaskStartScheduler();
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/* Will only get here if there was insufficient memory to create the idle
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task. */
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return 0;
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}
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/*-----------------------------------------------------------*/
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static void vCheckTask( void *pvParameters )
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{
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portBASE_TYPE xErrorOccurred = pdFALSE;
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portTickType xLastExecutionTime;
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unsigned portBASE_TYPE uxColumn = 0;
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xLCDMessage xMessage;
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xLastExecutionTime = xTaskGetTickCount();
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xMessage.xColumn = 0;
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xMessage.pcMessage = "PASS";
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for( ;; )
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{
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/* Perform this check every mainCHECK_DELAY milliseconds. */
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vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );
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/* Has an error been found in any task? */
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if( xAreBlockingQueuesStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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if( xAreSemaphoreTasksStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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if( xArePollingQueuesStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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if( xIsCreateTaskStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
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{
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xErrorOccurred = pdTRUE;
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}
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LCD_cls();
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xMessage.xColumn++;
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LCD_gotoxy( ( uxColumn & 0x07 ) + 1, ( uxColumn & 0x01 ) + 1 );
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if( xErrorOccurred == pdTRUE )
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{
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xMessage.pcMessage = "FAIL";
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}
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/* Send the message to the LCD gatekeeper for display. */
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xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );
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}
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}
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/*-----------------------------------------------------------*/
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void vLCDTask( void *pvParameters )
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{
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xLCDMessage xMessage;
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/* Initialise the LCD and display a startup message. */
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LCD_init();
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LCD_cur_off();
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LCD_cls();
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LCD_gotoxy( 1, 1 );
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LCD_puts( ( signed char * ) "www.FreeRTOS.org" );
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for( ;; )
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{
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/* Wait for a message to arrive that requires displaying. */
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while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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/* Display the message. Print each message to a different position. */
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LCD_cls();
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LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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LCD_puts( xMessage.pcMessage );
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}
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}
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/*-----------------------------------------------------------*/
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/* Keep the compiler quiet. */
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#include <stdio.h>
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int __putchar( int c )
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{
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return EOF;
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}
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