{

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; };

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;