/*
 Arduino.h - Main include file for the Arduino SDK
 Copyright (c) 2005-2013 Arduino Team.  All right reserved.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef MAIN_ESP32_HAL_GPIO_H_
#define MAIN_ESP32_HAL_GPIO_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "esp32-hal.h"
#include "soc/soc_caps.h"

#if (CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3)
#define NUM_OUPUT_PINS  46
#define PIN_DAC1        17
#define PIN_DAC2        18
#else
#define NUM_OUPUT_PINS  34
#define PIN_DAC1        25
#define PIN_DAC2        26
#endif

#define LOW               0x0
#define HIGH              0x1

//GPIO FUNCTIONS
#define INPUT             0x01
// Changed OUTPUT from 0x02 to behave the same as Arduino pinMode(pin,OUTPUT) 
// where you can read the state of pin even when it is set as OUTPUT
#define OUTPUT            0x03 
#define PULLUP            0x04
#define INPUT_PULLUP      0x05
#define PULLDOWN          0x08
#define INPUT_PULLDOWN    0x09
#define OPEN_DRAIN        0x10
#define OUTPUT_OPEN_DRAIN 0x12
#define ANALOG            0xC0

//Interrupt Modes
#define DISABLED  0x00
#define RISING    0x01
#define FALLING   0x02
#define CHANGE    0x03
#define ONLOW     0x04
#define ONHIGH    0x05
#define ONLOW_WE  0x0C
#define ONHIGH_WE 0x0D

#define digitalPinIsValid(pin)          GPIO_IS_VALID_GPIO(pin)
#define digitalPinCanOutput(pin)        GPIO_IS_VALID_OUTPUT_GPIO(pin)

#define digitalPinToRtcPin(pin)         ((RTC_GPIO_IS_VALID_GPIO(pin))?rtc_io_number_get(pin):-1) 
#define digitalPinToDacChannel(pin)     (((pin) == DAC_CHANNEL_1_GPIO_NUM)?0:((pin) == DAC_CHANNEL_2_GPIO_NUM)?1:-1)

void pinMode(uint8_t pin, uint8_t mode);
void digitalWrite(uint8_t pin, uint8_t val);
int digitalRead(uint8_t pin);

void attachInterrupt(uint8_t pin, void (*)(void), int mode);
void attachInterruptArg(uint8_t pin, void (*)(void*), void * arg, int mode);
void detachInterrupt(uint8_t pin);

int8_t digitalPinToTouchChannel(uint8_t pin);
int8_t digitalPinToAnalogChannel(uint8_t pin);
int8_t analogChannelToDigitalPin(uint8_t channel);

#ifdef __cplusplus
}
#endif

#endif /* MAIN_ESP32_HAL_GPIO_H_ */