arduino-esp32/variants/esp32-gateway/pins_arduino.h

#ifndef Pins_Arduino_h
#define Pins_Arduino_h

#include <stdint.h>

#define EXTERNAL_NUM_INTERRUPTS 16
#define NUM_DIGITAL_PINS        40
#define NUM_ANALOG_INPUTS       16

#define analogInputToDigitalPin(p)  (((p)<20)?(esp32_adc2gpio[(p)]):-1)
#define digitalPinToInterrupt(p)    (((p)<40)?(p):-1)
#define digitalPinHasPWM(p)         (p < 34)

static const uint8_t LED_BUILTIN = 33;
#define BUILTIN_LED  LED_BUILTIN // backward compatibility

static const uint8_t KEY_BUILTIN = 34;

// See https://github.com/OLIMEX/ESP32-GATEWAY/blob/master/SOFTWARE/MOD-RTC/main/main.c for more info about IIC on the GATEWAY
static const uint8_t SCL = 16; // This is pin 11
static const uint8_t SDA = 17; // This is pin 12

static const uint8_t TX = 1;
static const uint8_t RX = 3;

static const uint8_t A0 = 36;
static const uint8_t A3 = 39;
static const uint8_t A4 = 32;
static const uint8_t A7 = 35;

static const uint8_t T9 = 32;

#endif /* Pins_Arduino_h */