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46 lines
1004 B
C++
46 lines
1004 B
C++
#pragma once
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//
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// FILE: FastShiftOut.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.4
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// PURPOSE: shiftOut class that implements the Print interface
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// DATE: 2013-08-22
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// URL: https://github.com/RobTillaart/FastShiftOut
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#include "Arduino.h"
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#include "Print.h"
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#define FASTSHIFTOUT_LIB_VERSION (F("0.2.4"))
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class FastShiftOut : public Print
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{
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public:
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// bitOrder = { LSBFIRST, MSBFIRST };
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FastShiftOut(const uint8_t datapin, const uint8_t clockpin, const uint8_t bitOrder = LSBFIRST);
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size_t write(const uint8_t data);
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uint8_t lastWritten(void) { return _value; };
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bool setBitOrder(const uint8_t bitOrder);
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uint8_t getBitOrder(void) { return _bitorder; };
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// overrule bitOrder (most optimized).
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size_t writeLSBFIRST(const uint8_t data);
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size_t writeMSBFIRST(const uint8_t data);
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private:
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uint8_t _bitorder;
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int _value;
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uint8_t _databit;
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volatile uint8_t *_dataout;
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uint8_t _clockbit;
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volatile uint8_t *_clockout;
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};
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// -- END OF FILE --
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