mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
60 lines
1.1 KiB
C++
60 lines
1.1 KiB
C++
#pragma once
|
|
//
|
|
// FILE: FastShiftInOut.cpp
|
|
// AUTHOR: Rob Tillaart
|
|
// VERSION: 0.1.2
|
|
// PURPOSE: Arduino library for (AVR) optimized shiftInOut (simultaneously)
|
|
// URL: https://github.com/RobTillaart/FastShiftInOut
|
|
|
|
|
|
#include "Arduino.h"
|
|
|
|
|
|
#define FASTSHIFTINOUT_LIB_VERSION (F("0.1.2"))
|
|
|
|
|
|
class FastShiftInOut
|
|
{
|
|
public:
|
|
// bitOrder = { LSBFIRST, MSBFIRST };
|
|
FastShiftInOut(uint8_t dataIn, uint8_t dataOut, uint8_t clockPin, uint8_t bitOrder = LSBFIRST);
|
|
|
|
// reads and writes simultaneously
|
|
uint8_t write(uint8_t data);
|
|
uint8_t lastWritten(void);
|
|
|
|
bool setBitOrder(uint8_t bitOrder);
|
|
uint8_t getBitOrder(void);
|
|
|
|
// overrule bitOrder (most optimized).
|
|
uint8_t writeLSBFIRST(uint8_t data);
|
|
uint8_t writeMSBFIRST(uint8_t data);
|
|
|
|
private:
|
|
uint8_t _bitOrder;
|
|
int _value;
|
|
|
|
#if defined(ARDUINO_ARCH_AVR) || defined(ARDUINO_ARCH_MEGAAVR)
|
|
|
|
volatile uint8_t *_dataInRegister;
|
|
uint8_t _dataInBit;
|
|
|
|
volatile uint8_t *_dataOutRegister;
|
|
uint8_t _dataOutBit;
|
|
|
|
volatile uint8_t *_clockRegister;
|
|
uint8_t _clockBit;
|
|
|
|
#else
|
|
|
|
uint8_t _dataPinIn;
|
|
uint8_t _dataPinOut;
|
|
uint8_t _clockPin;
|
|
|
|
#endif
|
|
};
|
|
|
|
|
|
// -- END OF FILE --
|
|
|