Heiko.h Macros

#ifndef HEIKO_H
#define HEIKO_H 1

#define INLINE __attribute__((always_inline));

#define NOP()   asm volatile ("nop")
#define NOP2()  asm volatile ("rjmp 1f\n 1:")

typedef unsigned char byte;
typedef unsigned int uint;
typedef unsigned long ulong;

typedef union
{
  struct
    {
        byte low;
        byte high;
    };
    uint word;
} WORD;


#define nullptr ((void*) 0)

// Highbyte / Lowbyte of variables
#define LOW_BYTE(var)       (((unsigned char *)&(var))[0])
#define HIGH_BYTE(var)      (((unsigned char *)&(var))[1])
#define MK_WORD(low,high)   (low | (high<<8))

//______________________________________________________
#define S(bit)          (1<<bit)
#define R(bit)          (~(1<<bit))
#define C(bit)          (~(1<<bit))

//____ Bit functions __________________________________
#define BM(bit)             (1<<bit)
#define BS(bit)             (1<<bit)
#define BC(bit)             (0<<bit)
#define IsSET(port,bit)     ((port & BM(bit)) != 0)
#define IsCLEAR(port,bit)   ((port & BM(bit)) == 0)
#define SetBit(port,bit)    port |= BM(bit)
#define ClearBit(port,bit)  port &= ~BM(bit)


//____ Port functions __________________________________

#define DDR(port)           __CONCAT(DDR, port)
#define PIN(port)           __CONCAT(PIN, port)
#define PORT(port)          __CONCAT(PORT, port)


#define DIRIN(port,bit)     __CONCAT(DDR, port) &= (byte) ~BM(bit)
#define DIROUT(port,bit)    __CONCAT(DDR, port) |= (byte) BM(bit)
#define SETHIGH(port,bit)   __CONCAT(PORT, port) |= (byte) BM(bit)
#define SETLOW(port,bit)    __CONCAT(PORT, port) &= (byte) ~BM(bit)
#define TOGGLE(port,bit)    __CONCAT(PIN, port) |= (byte) BM(bit)
#define ISHIGH(port,bit)    ((__CONCAT(PIN, port) & BM(bit)) != 0)
#define ISLOW(port,bit)     ((__CONCAT(PIN, port) & BM(bit)) == 0)
#define PULLUPON(port,bit)  __CONCAT(PORT, port) |= (byte) BM(bit)
#define PULLUPOFF(port,bit) __CONCAT(PORT, port) &= (byte) ~BM(bit)

//____ Open Collector assumes a 0 at the pins_________
#define OCHIGH(port,bit)    __CONCAT(DDR, port) &= ~BM(bit)
#define OCLOW(port,bit)     __CONCAT(DDR, port) |= BM(bit)


#endif