led.c

it is programed on dsk6455,and it describe the use of the LED module of the the dsk6455 Board Suppor

/*H***************************************************************************
*
* $Archive:: /boards/dsk6455_v2/examples/led/led.c                           $
* $Revision:: 2                                                               $
* $Date:: 6/27/06 9:29a                                                       $
* $Author:: Shilpab                                                           $
*
* DESCRIPTION:
*
*   
* (C) Copyright 2005 by Spectrum Digital Incorporated
* All rights reserved
*
*H***************************************************************************/

/*
 *  ======== led.c ========
 *
 *  This example blinks LED #0 at a rate of about 2.5 times per second using
 *  the LED module of the the dsk6455 Board Support Library.  The example
 *  also reads the state of DIP switch #3 and lights LED #3 if the switch
 *  is depressed or turns it off if the switch is not depressed.
 *
 *  The purpose of this example is to demonstrate basic BSL usage as well
 *  as provide a project base for your own code.
 *
 *  Please see the DSK6455 help file in the docs\hlp directory for more detailed 
 *  information.
 */

/*
 *  DSP/BIOS is configured using the DSP/BIOS configuration tool.  Settings
 *  for this example are stored in a configuration file called led.cdb.  At
 *  compile time, Code Composer will auto-generate DSP/BIOS related files
 *  based on these settings.  A header file called ledcfg.h contains the
 *  results of the autogeneration and must be included for proper operation.
 *  The name of the file is taken from led.cdb and adding cfg.h.
 */
#include "ledcfg.h"

/*
 *  The Board Support Library is divided into several modules, each
 *  of which has its own include file.  The file dsk6455.h must be included
 *  in every program that uses the BSL.  This example also includes
 *  dsk6455_led.h and dsk6455_dip.h because it uses the LED and DIP modules.
 */
#include "dsk6455.h"
#include "dsk6455_led.h"
#include "dsk6455_dip.h"


/*
 *  main( ) - Main code routine, initializes BSL and runs LED application
 */

/*
 *  EXTRA: Pressing DIP switch #3 changes LED #3 from off to on.
 */

void main( )
{
    /* Initialize the board support library, must be first BSL call */
    DSK6455_init( );

    /* Initialize the LED and DIP switch modules of the BSL */
    DSK6455_LED_init( );
    DSK6455_DIP_init( );

    while( 1 )
    {
        /* Toggle LED #0 */
        DSK6455_LED_toggle( 0 );

        /* Check DIP switch #3 and light LED #3 accordingly, 0 = switch pressed */
        if ( DSK6455_DIP_get( 3 ) == 0 )
            /* Switch pressed, turn LED #3 on */
            DSK6455_LED_on( 3 );
        else
            /* Switch not pressed, turn LED #3 off */
            DSK6455_LED_off( 3 );

        /* Spin in a software delay loop for about 200ms */
        DSK6455_waitusec( 200000 );
    }
}