GY-63_MS5611/libraries/CRC/CRC12.h
rob tillaart 0862e67d65 0.3.1 CRC
2022-05-20 09:04:29 +02:00

68 lines
1.8 KiB
C++

#pragma once
//
// FILE: CRC12.h
// AUTHOR: Rob Tillaart
// PURPOSE: Arduino class for CRC12
// URL: https://github.com/RobTillaart/CRC
// https://github.com/RobTillaart/CRC/issues/13
#include "Arduino.h"
#include "CRC_polynomes.h"
class CRC12
{
public:
CRC12();
CRC12(uint16_t polynome, uint16_t XORstart, uint16_t XORend, bool reverseIn, bool reverseOut);
// set parameters to default
void reset(); // set all to constructor defaults
void restart(); // reset CRC with same parameters.
// set parameters
void setPolynome(uint16_t polynome) { _polynome = polynome; };
void setStartXOR(uint16_t start) { _startMask = start; };
void setEndXOR(uint16_t end) { _endMask = end; };
void setReverseIn(bool reverseIn) { _reverseIn = reverseIn; };
void setReverseOut(bool reverseOut) { _reverseOut = reverseOut; };
// get parameters
uint16_t getPolynome() { return _polynome; };
uint16_t getStartXOR() { return _startMask; };
uint16_t getEndXOR() { return _endMask; };
bool getReverseIn() { return _reverseIn; };
bool getReverseOut() { return _reverseOut; };
void add(uint8_t value);
void add(const uint8_t * array, uint16_t length);
uint16_t getCRC(); // returns CRC
uint32_t count() { return _count; };
// POWER USER ONLY
void enableYield() { _canYield = true; };
void disableYield() { _canYield = false; };
private:
uint16_t _reverse(uint16_t value);
uint8_t _reverse8(uint8_t value);
void _update(uint8_t value);
uint16_t _polynome;
uint16_t _startMask;
uint16_t _endMask;
uint16_t _crc;
bool _reverseIn;
bool _reverseOut;
bool _started;
bool _canYield;
uint32_t _count;
};
// -- END OF FILE --