/* | |
FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* FreeRTOS tutorial books are available in pdf and paperback. * | |
* Complete, revised, and edited pdf reference manuals are also * | |
* available. * | |
* * | |
* Purchasing FreeRTOS documentation will not only help you, by * | |
* ensuring you get running as quickly as possible and with an * | |
* in-depth knowledge of how to use FreeRTOS, it will also help * | |
* the FreeRTOS project to continue with its mission of providing * | |
* professional grade, cross platform, de facto standard solutions * | |
* for microcontrollers - completely free of charge! * | |
* * | |
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
* * | |
* Thank you for using FreeRTOS, and thank you for your support! * | |
* * | |
*************************************************************************** | |
This file is part of the FreeRTOS distribution. | |
FreeRTOS is free software; you can redistribute it and/or modify it under | |
the terms of the GNU General Public License (version 2) as published by the | |
Free Software Foundation AND MODIFIED BY the FreeRTOS exception. | |
>>>NOTE<<< The modification to the GPL is included to allow you to | |
distribute a combined work that includes FreeRTOS without being obliged to | |
provide the source code for proprietary components outside of the FreeRTOS | |
kernel. FreeRTOS is distributed in the hope that it will be useful, but | |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
more details. You should have received a copy of the GNU General Public | |
License and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
*************************************************************************** | |
* * | |
* Having a problem? Start by reading the FAQ "My application does * | |
* not run, what could be wrong? * | |
* * | |
* http://www.FreeRTOS.org/FAQHelp.html * | |
* * | |
*************************************************************************** | |
http://www.FreeRTOS.org - Documentation, training, latest information, | |
license and contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool. | |
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell | |
the code with commercial support, indemnification, and middleware, under | |
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also | |
provide a safety engineered and independently SIL3 certified version under | |
the SafeRTOS brand: http://www.SafeRTOS.com. | |
*/ | |
/** | |
* Repeatedly toggles one or more LEDs using software timers - one timer per | |
* LED. | |
*/ | |
/* Scheduler include files. */ | |
#include "FreeRTOS.h" | |
#include "timers.h" | |
/* Demo program include files. */ | |
#include "partest.h" | |
#include "flash_timer.h" | |
/* The toggle rates are all a multple of ledFLASH_RATE_BASE. */ | |
#define ledFLASH_RATE_BASE ( ( ( portTickType ) 333 ) / portTICK_RATE_MS ) | |
/* A block time of zero simple means "don't block". */ | |
#define ledDONT_BLOCK ( ( portTickType ) 0 ) | |
/*-----------------------------------------------------------*/ | |
/* | |
* The callback function used by each LED flashing timer. All the timers use | |
* this function, and the timer ID is used within the function to determine | |
* which timer has actually expired. | |
*/ | |
static void prvLEDTimerCallback( xTimerHandle xTimer ); | |
/*-----------------------------------------------------------*/ | |
void vStartLEDFlashTimers( unsigned portBASE_TYPE uxNumberOfLEDs ) | |
{ | |
unsigned portBASE_TYPE uxLEDTimer; | |
xTimerHandle xTimer; | |
/* Create and start the requested number of timers. */ | |
for( uxLEDTimer = 0; uxLEDTimer < uxNumberOfLEDs; ++uxLEDTimer ) | |
{ | |
/* Create the timer. */ | |
xTimer = xTimerCreate( ( const signed char * const ) "Flasher",/* A text name, purely to help debugging. */ | |
ledFLASH_RATE_BASE * ( uxLEDTimer + 1 ), /* The timer period, which is a multiple of ledFLASH_RATE_BASE. */ | |
pdTRUE, /* This is an auto-reload timer, so xAutoReload is set to pdTRUE. */ | |
( void * ) uxLEDTimer, /* The ID is used to identify the timer within the timer callback function, as each timer uses the same callback. */ | |
prvLEDTimerCallback /* Each timer uses the same callback. */ | |
); | |
/* If the timer was created successfully, attempt to start it. If the | |
scheduler has not yet been started then the timer command queue must | |
be long enough to hold each command sent to it until such time that the | |
scheduler is started. The timer command queue length is set by | |
configTIMER_QUEUE_LENGTH in FreeRTOSConfig.h. */ | |
if( xTimer != NULL ) | |
{ | |
xTimerStart( xTimer, ledDONT_BLOCK ); | |
} | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
static void prvLEDTimerCallback( xTimerHandle xTimer ) | |
{ | |
portBASE_TYPE xTimerID; | |
/* The timer ID is used to identify the timer that has actually expired as | |
each timer uses the same callback. The ID is then also used as the number | |
of the LED that is to be toggled. */ | |
xTimerID = ( portBASE_TYPE ) pvTimerGetTimerID( xTimer ); | |
vParTestToggleLED( xTimerID ); | |
} | |