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/*
* rhmidi
*
* Copyright (C) 2014 Christian Pointner <equinox@helsinki.at>
*
* This file is part of rhmidi.
*
* rhmidi 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 3 of the License, or
* any later version.
*
* rhmidi 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 rhmidi. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include "gpio.h"
#define GPIO_PIN PINE
#define GPIO_PORT PORTE
#define GPIO_DDR DDRE
void gpio_init(void)
{
GPIO_DDR = 0x0F;
GPIO_PORT = 0xF0;
}
void gpio_out_on(uint8_t num)
{
if(num < 4)
GPIO_PORT |= (1 << num);
}
void gpio_out_off(uint8_t num)
{
if(num < 4)
GPIO_PORT &= ~(1 << num);
}
void gpio_out_toggle(uint8_t num)
{
if(num < 4)
GPIO_PORT ^= (1 << num);
}
void gpio_task(void)
{
// TODO generate events on change of GPI
}
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