mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-20 08:55:59 -04:00
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#pragma once
|
|
//
|
|
// FILE: CRC32.h
|
|
// AUTHOR: Rob Tillaart
|
|
// PURPOSE: Arduino class for CRC32
|
|
// URL: https://github.com/RobTillaart/CRC
|
|
|
|
|
|
#include "Arduino.h"
|
|
|
|
#define CRC32_DEFAULT_POLYNOME 0x04C11DB7
|
|
|
|
|
|
class CRC32
|
|
{
|
|
public:
|
|
CRC32();
|
|
|
|
// set parameters to default
|
|
void reset(); // set all to constructor defaults
|
|
void restart(); // reset crc with same parameters.
|
|
|
|
// set parameters
|
|
void setPolynome(uint32_t polynome) { _polynome = polynome; };
|
|
void setStartXOR(uint32_t start) { _startMask = start; };
|
|
void setEndXOR(uint32_t end) { _endMask = end; };
|
|
void setReverseIn(bool reverseIn) { _reverseIn = reverseIn; };
|
|
void setReverseOut(bool reverseOut) { _reverseOut = reverseOut; };
|
|
|
|
void add(uint8_t value);
|
|
void add(const uint8_t * array, uint8_t length);
|
|
|
|
uint32_t getCRC(); // returns CRC
|
|
uint32_t count() { return _count; };
|
|
|
|
private:
|
|
uint32_t _reverse(uint32_t value);
|
|
uint8_t _reverse8(uint8_t value);
|
|
void _update(uint8_t value);
|
|
|
|
uint32_t _polynome;
|
|
uint32_t _startMask;
|
|
uint32_t _endMask;
|
|
uint32_t _crc;
|
|
bool _reverseIn;
|
|
bool _reverseOut;
|
|
bool _started;
|
|
uint32_t _count;
|
|
};
|
|
|
|
|
|
// -- END OF FILE --
|
|
|