89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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/*
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* Copyright (c) 2010 harald pichler
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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
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* \brief
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* This file provides Raven KEY support.
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*
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* \author
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* Harald Pichler harald@the-develop.net
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*
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*/
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#include "key.h"
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/*---------------------------------------------------------------------------*/
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/**
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* \brief This will intialize the KEY for button readings.
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*/
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void
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key_init(void)
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{
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// ext1
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DDRB |= (0<<DDB5); // Set pin as input
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PORTB |= (1<<PORTB5); // Set port PORTE bint 5 with pullup resistor
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// ext2
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DDRB |= (0<<DDB6); // Set pin as input
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PORTB |= (1<<PORTB6); // Set port PORTE bint 5 with pullup resistor
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief This will poll run key_task() to determine if a button has been pressed.
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*
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* \retval True if button is pressed
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* \retval False if button is not pressed
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*/
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uint8_t
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is_button_ext1(void)
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{
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/* Return true if button has been pressed. */
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if ( PINB & (1<<PINB5) ) {
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return 0;
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}
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else{
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return 1;
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}
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}
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uint8_t
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is_button_ext2(void)
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{
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/* Return true if button has been pressed. */
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if ( PINB & (1<<PINB6) ) {
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return 0;
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}
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else{
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return 1;
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}
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}
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