// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
//
// 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.

#pragma once

#include "soc/gpio_periph.h"
#include "soc/gpio_caps.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef int gpio_num_t;

typedef enum {
    GPIO_INTR_DISABLE = 0,     /*!< Disable GPIO interrupt                             */
    GPIO_INTR_POSEDGE = 1,     /*!< GPIO interrupt type : rising edge                  */
    GPIO_INTR_NEGEDGE = 2,     /*!< GPIO interrupt type : falling edge                 */
    GPIO_INTR_ANYEDGE = 3,     /*!< GPIO interrupt type : both rising and falling edge */
    GPIO_INTR_LOW_LEVEL = 4,   /*!< GPIO interrupt type : input low level trigger      */
    GPIO_INTR_HIGH_LEVEL = 5,  /*!< GPIO interrupt type : input high level trigger     */
    GPIO_INTR_MAX,
} gpio_int_type_t;

typedef enum {
    GPIO_MODE_DISABLE = GPIO_MODE_DEF_DISABLE,                                                         /*!< GPIO mode : disable input and output             */
    GPIO_MODE_INPUT = GPIO_MODE_DEF_INPUT,                                                             /*!< GPIO mode : input only                           */
    GPIO_MODE_OUTPUT = GPIO_MODE_DEF_OUTPUT,                                                           /*!< GPIO mode : output only mode                     */
    GPIO_MODE_OUTPUT_OD = ((GPIO_MODE_DEF_OUTPUT) | (GPIO_MODE_DEF_OD)),                               /*!< GPIO mode : output only with open-drain mode     */
    GPIO_MODE_INPUT_OUTPUT_OD = ((GPIO_MODE_DEF_INPUT) | (GPIO_MODE_DEF_OUTPUT) | (GPIO_MODE_DEF_OD)), /*!< GPIO mode : output and input with open-drain mode*/
    GPIO_MODE_INPUT_OUTPUT = ((GPIO_MODE_DEF_INPUT) | (GPIO_MODE_DEF_OUTPUT)),                         /*!< GPIO mode : output and input mode                */
} gpio_mode_t;

typedef enum {
    GPIO_PULLUP_DISABLE = 0x0,     /*!< Disable GPIO pull-up resistor */
    GPIO_PULLUP_ENABLE = 0x1,      /*!< Enable GPIO pull-up resistor */
} gpio_pullup_t;

typedef enum {
    GPIO_PULLDOWN_DISABLE = 0x0,   /*!< Disable GPIO pull-down resistor */
    GPIO_PULLDOWN_ENABLE = 0x1,    /*!< Enable GPIO pull-down resistor  */
} gpio_pulldown_t;

/**
 * @brief Configuration parameters of GPIO pad for gpio_config function
 */
typedef struct {
    uint64_t pin_bit_mask;          /*!< GPIO pin: set with bit mask, each bit maps to a GPIO */
    gpio_mode_t mode;               /*!< GPIO mode: set input/output mode                     */
    gpio_pullup_t pull_up_en;       /*!< GPIO pull-up                                         */
    gpio_pulldown_t pull_down_en;   /*!< GPIO pull-down                                       */
    gpio_int_type_t intr_type;      /*!< GPIO interrupt type                                  */
} gpio_config_t;

typedef enum {
    GPIO_PULLUP_ONLY,               /*!< Pad pull up            */
    GPIO_PULLDOWN_ONLY,             /*!< Pad pull down          */
    GPIO_PULLUP_PULLDOWN,           /*!< Pad pull up + pull down*/
    GPIO_FLOATING,                  /*!< Pad floating           */
} gpio_pull_mode_t;

typedef enum {
    GPIO_DRIVE_CAP_0       = 0,    /*!< Pad drive capability: weak          */
    GPIO_DRIVE_CAP_1       = 1,    /*!< Pad drive capability: stronger      */
    GPIO_DRIVE_CAP_2       = 2,    /*!< Pad drive capability: medium */
    GPIO_DRIVE_CAP_DEFAULT = 2,    /*!< Pad drive capability: medium */
    GPIO_DRIVE_CAP_3       = 3,    /*!< Pad drive capability: strongest     */
    GPIO_DRIVE_CAP_MAX,
} gpio_drive_cap_t;

typedef void (*gpio_isr_t)(void *);

#ifdef __cplusplus
}
#endif