arduino-esp32/variants/esp320/pins_arduino.h

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#ifndef Pins_Arduino_h
#define Pins_Arduino_h
#include <stdint.h>
#define EXTERNAL_NUM_INTERRUPTS 11
#define NUM_DIGITAL_PINS 12
#define NUM_ANALOG_INPUTS 5
#define analogInputToDigitalPin(p) (((p)<20)?(esp32_adc2gpio[(p)]):-1)
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#define digitalPinToInterrupt(p) (((p)<40)?(p):-1)
#define digitalPinHasPWM(p) (p < 34)
static const uint8_t LED_BUILTIN = 5;
#define BUILTIN_LED LED_BUILTIN // backward compatibility
static const uint8_t TX = 1;
static const uint8_t RX = 3;
static const uint8_t SDA = 2;
static const uint8_t SCL = 14;
static const uint8_t SS = 15;
static const uint8_t MOSI = 13;
static const uint8_t MISO = 12;
static const uint8_t SCK = 14;
#endif /* Pins_Arduino_h */