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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SAM3X_GPIO_H
#define SAM3X_GPIO_H
#include <libopencm3/sam/pio.h>
/* flags may be or'd together, but only contain one of
* GPOUTPUT, PERIPHA and PERIPHB */
enum gpio_flags {
GPIO_FLAG_GPINPUT = 0,
GPIO_FLAG_GPOUTPUT = 1,
GPIO_FLAG_PERIPHA = 2,
GPIO_FLAG_PERIPHB = 3,
GPIO_FLAG_OPEN_DRAIN = 4,
GPIO_FLAG_PULL_UP = 8,
};
void gpio_init(uint32_t gpioport, uint32_t pins, enum gpio_flags flags);
static inline void gpio_set(uint32_t gpioport, uint32_t gpios)
{
PIO_SODR(gpioport) = gpios;
}
static inline void gpio_clear(uint32_t gpioport, uint32_t gpios)
{
PIO_CODR(gpioport) = gpios;
}
void gpio_toggle(uint32_t gpioport, uint32_t gpios);
#endif
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