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PR: Add some macros related to working with bytes and bits #536

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PR: Add some macros related to working with bytes and bits #536

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9 changes: 7 additions & 2 deletions cores/arduino/Arduino.h
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,7 @@ void yield(void);
#define INTERNAL INTERNAL1V1
#define INTERNAL2V56 9
#define INTERNAL2V56_EXTCAP 13
#else
#else
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1284__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega644__) || defined(__AVR_ATmega644A__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__)
#define INTERNAL1V1 2
#define INTERNAL2V56 3
Expand Down Expand Up @@ -108,11 +108,16 @@ void yield(void);
#define lowByte(w) ((uint8_t) ((w) & 0xff))
#define highByte(w) ((uint8_t) ((w) >> 8))

#define packToInt(h,l) ((uint16_t)h)<<8 | (uint16_t)l)
#define packToLong(i3,i2,i1,i0) (((uint32_t)i3<<24) | ((uint32_t)i2<<16) | ((uint32_t)i1<<8) | (uint32_t)i0)

#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
#define bitSet(value, bit) ((value) |= (1UL << (bit)))
#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
#define bitToggle(value, bit) ((value) ^= (1UL << (bit)))
#define bitWrite(value, bit, bitvalue) ((bitvalue) ? bitSet(value, bit) : bitClear(value, bit))
#define bitIsSet(value, bit) ((value) & (1UL << (bit)))
#define bitIsClear(value, bit) (!((value) & (1UL << (bit))))

// avr-libc defines _NOP() since 1.6.2
#ifndef _NOP
Expand Down Expand Up @@ -172,7 +177,7 @@ extern const uint8_t PROGMEM digital_pin_to_timer_PGM[];

// Get the bit location within the hardware port of the given virtual pin.
// This comes from the pins_*.c file for the active board configuration.
//
//
// These perform slightly better as macros compared to inline functions
//
#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
Expand Down