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