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137 lines
6.1 KiB
C
137 lines
6.1 KiB
C
/*
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FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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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 distribute
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>>! a combined work that includes FreeRTOS without being obliged to provide
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>>! the source code for proprietary components outside of the FreeRTOS
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>>! kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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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, books, training, latest versions,
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license and Real Time Engineers Ltd. 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, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/**
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* Repeatedly toggles one or more LEDs using software timers - one timer per
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* LED.
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*/
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/* Scheduler include files. */
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#include "FreeRTOS.h"
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#include "timers.h"
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/* Demo program include files. */
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#include "partest.h"
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#include "flash_timer.h"
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/* The toggle rates are all a multple of ledFLASH_RATE_BASE. */
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#define ledFLASH_RATE_BASE ( ( ( portTickType ) 333 ) / portTICK_RATE_MS )
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/* A block time of zero simple means "don't block". */
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#define ledDONT_BLOCK ( ( portTickType ) 0 )
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/*-----------------------------------------------------------*/
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/*
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* The callback function used by each LED flashing timer. All the timers use
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* this function, and the timer ID is used within the function to determine
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* which timer has actually expired.
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*/
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static void prvLEDTimerCallback( xTimerHandle xTimer );
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/*-----------------------------------------------------------*/
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void vStartLEDFlashTimers( unsigned portBASE_TYPE uxNumberOfLEDs )
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{
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unsigned portBASE_TYPE uxLEDTimer;
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xTimerHandle xTimer;
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/* Create and start the requested number of timers. */
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for( uxLEDTimer = 0; uxLEDTimer < uxNumberOfLEDs; ++uxLEDTimer )
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{
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/* Create the timer. */
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xTimer = xTimerCreate( "Flasher", /* A text name, purely to help debugging. */
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ledFLASH_RATE_BASE * ( uxLEDTimer + 1 ),/* The timer period, which is a multiple of ledFLASH_RATE_BASE. */
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pdTRUE, /* This is an auto-reload timer, so xAutoReload is set to pdTRUE. */
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( void * ) uxLEDTimer, /* The ID is used to identify the timer within the timer callback function, as each timer uses the same callback. */
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prvLEDTimerCallback /* Each timer uses the same callback. */
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);
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/* If the timer was created successfully, attempt to start it. If the
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scheduler has not yet been started then the timer command queue must
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be long enough to hold each command sent to it until such time that the
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scheduler is started. The timer command queue length is set by
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configTIMER_QUEUE_LENGTH in FreeRTOSConfig.h. */
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if( xTimer != NULL )
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{
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xTimerStart( xTimer, ledDONT_BLOCK );
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}
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}
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}
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/*-----------------------------------------------------------*/
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static void prvLEDTimerCallback( xTimerHandle xTimer )
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{
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portBASE_TYPE xTimerID;
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/* The timer ID is used to identify the timer that has actually expired as
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each timer uses the same callback. The ID is then also used as the number
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of the LED that is to be toggled. */
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xTimerID = ( portBASE_TYPE ) pvTimerGetTimerID( xTimer );
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vParTestToggleLED( xTimerID );
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}
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