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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* led.c
*
* Sun Jun 9 12:51:55 CEST 2013
* Copyright 2013 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pedal2Metal.
*
* Pedal2Metal is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Pedal2Metal 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
* along with Pedal2Metal; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "led.h"
#include <LPC17xx.h>
static int led_state = 0;
void led_init()
{
// See table 46, pg. 63
uint32_t *pconp = (uint32_t*)0x400FC0C4;
*pconp |= (0b1 << 15); // power up GPIO
// See table 104, pg. 124
LPC_GPIO1->FIODIR |= 1 << 29; // puts P1.29 into output mode.
}
void led_on()
{
led_state = 1;
LPC_GPIO1->FIOPIN |= 1 << 29; // make P1.29 high
}
void led_off()
{
led_state = 0;
LPC_GPIO1->FIOPIN &= ~( 1 << 29 ); // make P1.29 low
}
void led_toggle()
{
if(led_state) led_off();
else led_on();
}
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