text: 
  #ifndef h_pinmode_h
  #define h_pinmode_h
  
  typedef enum {
    INPUT = 0,
    OUTPUT = 1,
    INPUT_PULLUP = 2,
  } pinmode_e;
  
  unsigned char digitalRead ( int pin );
  void digitalWrite ( int pin, unsigned char lowhigh );
  void pinMode ( int pin, pinmode_e mode );
  void delayMicroseconds ( int usec );
  
  #endif
  