62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of ARM nor the names of its contributors may be used
|
|
* to endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __GPIO_H__
|
|
#define __GPIO_H__
|
|
|
|
#define GPIO_DIR_OUT 0
|
|
#define GPIO_DIR_IN 1
|
|
|
|
#define GPIO_LEVEL_LOW 0
|
|
#define GPIO_LEVEL_HIGH 1
|
|
|
|
#define GPIO_PULL_NONE 0
|
|
#define GPIO_PULL_UP 1
|
|
#define GPIO_PULL_DOWN 2
|
|
|
|
typedef struct gpio_ops {
|
|
int (*get_direction)(int gpio);
|
|
void (*set_direction)(int gpio, int direction);
|
|
int (*get_value)(int gpio);
|
|
void (*set_value)(int gpio, int value);
|
|
void (*set_pull)(int gpio, int pull);
|
|
int (*get_pull)(int gpio);
|
|
} gpio_ops_t;
|
|
|
|
int gpio_get_direction(int gpio);
|
|
void gpio_set_direction(int gpio, int direction);
|
|
int gpio_get_value(int gpio);
|
|
void gpio_set_value(int gpio, int value);
|
|
void gpio_set_pull(int gpio, int pull);
|
|
int gpio_get_pull(int gpio);
|
|
void gpio_init(const gpio_ops_t *ops);
|
|
|
|
#endif /* __GPIO_H__ */
|