/* -*- 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();
}