mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
|
#pragma once
|
||
|
|
//
|
||
|
|
// FILE: CRC8.h
|
||
|
|
// AUTHOR: Rob Tillaart
|
||
|
|
// PURPOSE: Arduino class for CRC8
|
||
|
|
// URL: https://github.com/RobTillaart/CRC
|
||
|
|
|
||
|
|
|
||
|
|
#include "Arduino.h"
|
||
|
|
|
||
|
|
#define CRC8_DEFAULT_POLYNOME 0x07
|
||
|
|
|
||
|
|
|
||
|
|
class CRC8
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
CRC8();
|
||
|
|
|
||
|
|
// set parameters to default
|
||
|
|
void reset(); // set all to constructor defaults
|
||
|
|
void restart(); // reset crc with same parameters.
|
||
|
|
|
||
|
|
// set parameters
|
||
|
|
void setPolynome(uint8_t polynome) { _polynome = polynome; };
|
||
|
|
void setStartXOR(uint8_t start) { _startMask = start; };
|
||
|
|
void setEndXOR(uint8_t end) { _endMask = end; };
|
||
|
|
void setReverseIn(bool reverseIn) { _reverseIn = reverseIn; };
|
||
|
|
void setReverseOut(bool reverseOut) { _reverseOut = reverseOut; };
|
||
|
|
|
||
|
|
void add(uint8_t value);
|
||
|
|
void add(uint8_t * array, uint32_t length);
|
||
|
|
|
||
|
|
uint8_t getCRC(); // returns CRC
|
||
|
|
uint32_t count() { return _count; };
|
||
|
|
|
||
|
|
private:
|
||
|
|
uint8_t _reverse(uint8_t value);
|
||
|
|
void _update(uint8_t value);
|
||
|
|
|
||
|
|
uint8_t _polynome;
|
||
|
|
uint8_t _startMask;
|
||
|
|
uint8_t _endMask;
|
||
|
|
uint8_t _crc;
|
||
|
|
bool _reverseIn;
|
||
|
|
bool _reverseOut;
|
||
|
|
bool _started;
|
||
|
|
uint32_t _count;
|
||
|
|
};
|
||
|
|
|
||
|
|
// -- END OF FILE --
|