arduino.h

#ifndef arduino_h
#define arduino_h

#include <stdlib.h>
#include <string.h>
#include <math.h>

#ifdef __cplusplus
extern "C"{
#endif
  
#define HIGH 0x1
#define LOW  0x0
  
#define INPUT 0x0
#define OUTPUT 0x1
#define INPUT_PULLUP 0x2
  
#ifndef true
   #define true 0x1
#endif

#ifndef false
  #define false 0x0
#endif

#define PI 3.1415926535897932384626433832795
#define HALF_PI 1.5707963267948966192313216916398
#define TWO_PI 6.283185307179586476925286766559
#define DEG_TO_RAD 0.017453292519943295769236907684886
#define RAD_TO_DEG 57.295779513082320876798154814105
  
#define SERIAL  0x0
#define DISPLAY 0x1
  
#define LSBFIRST 0
#define MSBFIRST 1
  
#define CHANGE 1
#define FALLING 2
#define RISING 3
  
  
  // undefine stdlib's abs if encountered
#ifdef abs
#undef abs
#endif
  
#define min(a,b) ((a)<(b)?(a):(b))
#define max(a,b) ((a)>(b)?(a):(b))
#define abs(x) ((x)>0?(x):-(x))
#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
#define round(x)     ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
#define radians(deg) ((deg)*DEG_TO_RAD)
#define degrees(rad) ((rad)*RAD_TO_DEG)
#define sq(x) ((x)*(x))
  
#define lowByte(w) ((uint8_t) ((w) & 0xff))
#define highByte(w) ((uint8_t) ((w) >> 8))
  
#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
#define bitSet(value, bit) ((value) |= (1UL << (bit)))
#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit))
  
  
  typedef unsigned int word;
  
#define bit(b) (1UL << (b))

  typedef unsigned char uint8_t;
  
  typedef uint8_t boolean;
  typedef uint8_t byte;
  
  void init(void);
  
  void pinMode(uint8_t, uint8_t);
  void digitalWrite(uint8_t, uint8_t);
  
  unsigned long millis(void);
  void delay(unsigned long);

  void setup(void);
  void loop(void);
  
  
  static const uint8_t A0 = 14;
  static const uint8_t A1 = 15;
  static const uint8_t A2 = 16;
  static const uint8_t A3 = 17;
  static const uint8_t A4 = 18;
  static const uint8_t A5 = 19;
  static const uint8_t A6 = 20;
  static const uint8_t A7 = 21;

#define NUM_DIGITAL_PINS            20
#define NUM_ANALOG_INPUTS           6

#ifdef __cplusplus
} // extern "C"
#endif


#endif