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Copy pathusbstk5515_led.c
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usbstk5515_led.c
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/*
* Copyright 2010 by Spectrum Digital Incorporated.
* All rights reserved. Property of Spectrum Digital Incorporated.
*/
/*
* LED implementation
*
*/
#include "usbstk5515.h"
#include "usbstk5515_gpio.h"
#include "usbstk5515_led.h"
/* ------------------------------------------------------------------------ *
* *
* USBSTK5515_LED_init( ) *
* *
* Clear LEDs *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_LED_init( )
{
/* Turn OFF all LEDs */
return USBSTK5515_LED_off( 0 );
}
/* ------------------------------------------------------------------------ *
* *
* USBSTK5515_LED_on( number ) *
* *
* number <- 0 *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_LED_on(Uint16 number)
{
asm(" bset XF");
asm(" nop");
asm(" nop");
asm(" nop");
asm(" nop");
asm(" nop");
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* USBSTK5515_LED_off( number ) *
* *
* number <- 0 *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_LED_off(Uint16 number)
{
asm(" bclr XF");
asm(" nop");
asm(" nop");
asm(" nop");
asm(" nop");
asm(" nop");
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_init( ) *
* *
* Initialize User LEDs DS2 - DS5 *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_init( )
{
/* Enable LED Outputs */
USBSTK5515_GPIO_setDirection( 14, GPIO_OUT ); // DS1
USBSTK5515_GPIO_setDirection( 15, GPIO_OUT ); // DS2
USBSTK5515_GPIO_setDirection( 16, GPIO_OUT ); // DS3
USBSTK5515_GPIO_setDirection( 17, GPIO_OUT ); // DS4
/* Turn OFF all LEDs */
return USBSTK5515_ULED_setall( 0x0F );
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_getall( pattern ) *
* *
* Get all User LED values *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_getall( Uint16 *pattern )
{
Uint16 retval;
retval = USBSTK5515_GPIO_getInput(14) |
(USBSTK5515_GPIO_getInput(15) << 1) |
(USBSTK5515_GPIO_getInput(16) << 2) |
(USBSTK5515_GPIO_getInput(17) << 3);
*pattern = retval;
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_setall( pattern ) *
* *
* Set all User LED values *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_setall( Uint16 pattern )
{
if (pattern & 0x01)
USBSTK5515_GPIO_setOutput( 14, 1);
else
USBSTK5515_GPIO_setOutput( 14, 0);
if (pattern & 0x02)
USBSTK5515_GPIO_setOutput( 15, 1);
else
USBSTK5515_GPIO_setOutput( 15, 0);
if (pattern & 0x04)
USBSTK5515_GPIO_setOutput( 16, 1);
else
USBSTK5515_GPIO_setOutput( 16, 0);
if (pattern & 0x08)
USBSTK5515_GPIO_setOutput( 17, 1);
else
USBSTK5515_GPIO_setOutput( 17, 0);
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_on( number ) *
* *
* number <- LED# [0:3] *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_on( Uint16 number )
{
Uint16 led_state;
Uint16 led_bit_on;
led_bit_on = 1 << ( 3 - number );
/*
* Get then set LED
*/
if ( USBSTK5515_ULED_getall( &led_state ) )
return -1;
led_state = led_state & ( ~led_bit_on );
if ( USBSTK5515_ULED_setall( led_state ) )
return -1;
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_off( number ) *
* *
* number <- LED# [0:7] *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_off( Uint16 number )
{
Uint16 led_state;
Uint16 led_bit_off;
led_bit_off = 1 << ( 3 - number );
/*
* Get then set LED
*/
if ( USBSTK5515_ULED_getall( &led_state ) )
return -1;
led_state = led_state | led_bit_off;
if ( USBSTK5515_ULED_setall( led_state ) )
return -1;
return 0;
}
/* ------------------------------------------------------------------------ *
* *
* _ULED_toggle( number ) *
* *
* number <- LED# [0:3] *
* *
* ------------------------------------------------------------------------ */
Int16 USBSTK5515_ULED_toggle( Uint16 number )
{
Uint16 led_state;
Uint16 new_led_state;
Uint16 led_bit_toggle;
led_bit_toggle = 1 << ( 3 - number );
/*
* Get then set LED
*/
if ( USBSTK5515_ULED_getall( &led_state ) )
return -1;
if ( ( led_state & led_bit_toggle ) == 0 )
new_led_state = led_state | led_bit_toggle; /* Turn OFF */
else
new_led_state = led_state & ~led_bit_toggle; /* Turn ON */
if ( USBSTK5515_ULED_setall( new_led_state ) )
return -1;
return 0;
}