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169 lines
4.5 KiB
C
169 lines
4.5 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/**
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* \file
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*/
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/*------------------------------------------------------------------------------
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* Headers
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*------------------------------------------------------------------------------*/
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#include "board.h"
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/*------------------------------------------------------------------------------
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* Local Variables
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*------------------------------------------------------------------------------*/
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#ifdef PINS_LEDS
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static const Pin pinsLeds[] = { PINS_LEDS } ;
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static const uint32_t numLeds = PIO_LISTSIZE( pinsLeds ) ;
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#endif
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/*------------------------------------------------------------------------------
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* Global Functions
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*------------------------------------------------------------------------------*/
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/**
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* Configures the pin associated with the given LED number. If the LED does
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* not exist on the board, the function does nothing.
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* \param led Number of the LED to configure.
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* \return 1 if the LED exists and has been configured; otherwise 0.
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*/
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extern uint32_t LED_Configure( uint32_t dwLed )
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{
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#ifdef PINS_LEDS
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// Check that LED exists
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if ( dwLed >= numLeds)
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{
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return 0;
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}
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// Configure LED
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return ( PIO_Configure( &pinsLeds[dwLed], 1 ) ) ;
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#else
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return 0 ;
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#endif
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}
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/**
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* Turns the given LED on if it exists; otherwise does nothing.
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* \param led Number of the LED to turn on.
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* \return 1 if the LED has been turned on; 0 otherwise.
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*/
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extern uint32_t LED_Set( uint32_t dwLed )
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{
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#ifdef PINS_LEDS
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/* Check if LED exists */
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if ( dwLed >= numLeds )
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{
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return 0 ;
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}
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/* Turn LED on */
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if ( pinsLeds[dwLed].type == PIO_OUTPUT_0 )
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{
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PIO_Set( &pinsLeds[dwLed] ) ;
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}
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else
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{
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PIO_Clear( &pinsLeds[dwLed] ) ;
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}
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return 1 ;
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#else
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return 0 ;
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#endif
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}
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/**
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* Turns a LED off.
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*
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* \param led Number of the LED to turn off.
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* \return 1 if the LED has been turned off; 0 otherwise.
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*/
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extern uint32_t LED_Clear( uint32_t dwLed )
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{
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#ifdef PINS_LEDS
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/* Check if LED exists */
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if ( dwLed >= numLeds )
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{
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return 0 ;
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}
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/* Turn LED off */
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if ( pinsLeds[dwLed].type == PIO_OUTPUT_0 )
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{
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PIO_Clear( &pinsLeds[dwLed] ) ;
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}
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else
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{
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PIO_Set( &pinsLeds[dwLed] ) ;
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}
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return 1 ;
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#else
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return 0 ;
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#endif
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}
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/**
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* Toggles the current state of a LED.
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*
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* \param led Number of the LED to toggle.
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* \return 1 if the LED has been toggled; otherwise 0.
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*/
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extern uint32_t LED_Toggle( uint32_t dwLed )
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{
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#ifdef PINS_LEDS
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/* Check if LED exists */
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if ( dwLed >= numLeds )
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{
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return 0 ;
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}
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/* Toggle LED */
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if ( PIO_GetOutputDataStatus( &pinsLeds[dwLed] ) )
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{
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PIO_Clear( &pinsLeds[dwLed] ) ;
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}
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else
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{
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PIO_Set( &pinsLeds[dwLed] ) ;
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}
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return 1 ;
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#else
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return 0 ;
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#endif
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}
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