text: #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 TX = 1;
  static const uint8_t RX = 3;
  
  static const uint8_t SDA = 21;
  static const uint8_t SCL = 22;
  
  static const uint8_t SS    = 5;
  static const uint8_t MOSI  = 23;
  static const uint8_t MISO  = 50;//未使用，定义为不存在管脚
  static const uint8_t SCK   = 18;
  
  static const uint8_t TFT_CS=5;
  static const uint8_t TFT_DC =19;
  
  static const uint8_t BTN_A = 0;
  static const uint8_t BTN_B = 2;
  static const uint8_t BTN_C = 4;
  
  static const uint8_t TOUCH_C = 4;
  static const uint8_t TOUCH_D = 13;
  static const uint8_t TOUCH_E = 12;
  static const uint8_t TOUCH_F = 14;
  static const uint8_t TOUCH_G = 15;
  static const uint8_t TOUCH_A = 27;
  static const uint8_t TOUCH_B = 2;
  
  
  static const uint8_t DAC1 = 25;
  static const uint8_t DAC2 = 26;
  
  #endif /* Pins_Arduino_h */
  