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/*
* Copyright (C) 2015 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_saul
* @{
*
* @file
* @brief SAUL wrapper for direct access to GPIO pins
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <string.h>
#include "saul.h"
#include "phydat.h"
#include "periph/gpio.h"
static int read(const void *dev, phydat_t *res)
{
gpio_t pin = *((const gpio_t *)dev);
res->val[0] = (gpio_read(pin)) ? 1 : 0;
memset(&(res->val[1]), 0, 2 * sizeof(int16_t));
res->unit = UNIT_BOOL;
res->scale = 0;
return 1;
}
static int write(const void *dev, phydat_t *state)
{
gpio_t pin = *((const gpio_t *)dev);
gpio_write(pin, state->val[0]);
return 1;
}
const saul_driver_t gpio_out_saul_driver = {
.read = read,
.write = write,
.type = SAUL_ACT_SWITCH
};
const saul_driver_t gpio_in_saul_driver = {
.read = read,
.write = saul_notsup,
.type = SAUL_SENSE_BTN
};