iotbus_gpio.h

Go to the documentation of this file.

/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/

#ifndef IOTBUS_GPIO_H_
#define IOTBUS_GPIO_H_

typedef enum {
    IOTBUS_GPIO_DRIVE_NONE = 0, /* No set any state */
    IOTBUS_GPIO_DRIVE_PULLUP = 1, /* Resistive High */
    IOTBUS_GPIO_DRIVE_PULLDOWN = 2, /* Resistive Low */
    IOTBUS_GPIO_DRIVE_FLOAT = 3, IOTBUS_GPIO_DRIVE_PUSHPULL = 4,
} iotbus_gpio_drive_e;

typedef enum {
    IOTBUS_GPIO_DIRECTION_NONE = 0, IOTBUS_GPIO_DIRECTION_OUT = 1, /* Output. A Mode can also be set */
    IOTBUS_GPIO_DIRECTION_IN = 2, /* Input */
} iotbus_gpio_direction_e;

typedef enum {
    IOTBUS_GPIO_EDGE_NONE = 0, /* No interrupt on Gpio */
    IOTBUS_GPIO_EDGE_BOTH = 1, /* Interrupt on rising & falling */
    IOTBUS_GPIO_EDGE_RISING = 2, /* Interrupt on rising only */
    IOTBUS_GPIO_EDGE_FALLING = 3 /* Interrupt on falling only */
} iotbus_gpio_edge_e;

struct _iotbus_gpio_s;

typedef struct _iotbus_gpio_s *iotbus_gpio_context_h;

#ifdef __cplusplus
extern "C"
{
#endif

typedef void (*gpio_isr_cb)(void *user_data);

iotbus_gpio_context_h iotbus_gpio_open(int gpiopin);

int iotbus_gpio_close(iotbus_gpio_context_h dev);

int iotbus_gpio_set_direction(iotbus_gpio_context_h dev, iotbus_gpio_direction_e dir);

int iotbus_gpio_set_edge_mode(iotbus_gpio_context_h dev, iotbus_gpio_edge_e edge);

int iotbus_gpio_set_drive_mode(iotbus_gpio_context_h dev, iotbus_gpio_drive_e drive);

int iotbus_gpio_register_cb(iotbus_gpio_context_h dev, iotbus_gpio_edge_e edge, gpio_isr_cb isr_cb, void *user_data);

int iotbus_gpio_unregister_cb(iotbus_gpio_context_h dev);

int iotbus_gpio_read(iotbus_gpio_context_h dev);

int iotbus_gpio_write(iotbus_gpio_context_h dev, int value);

int iotbus_gpio_get_direction(iotbus_gpio_context_h dev, iotbus_gpio_direction_e *dir);

int iotbus_gpio_get_pin(iotbus_gpio_context_h dev);

int iotbus_gpio_get_edge_mode(iotbus_gpio_context_h dev, iotbus_gpio_edge_e *edge);

int iotbus_gpio_get_drive_mode(iotbus_gpio_context_h dev, iotbus_gpio_drive_e *drive);

#ifdef __cplusplus
}
#endif

#endif /* IOTBUS_GPIO_H_ */
 // end of GPIO group