src/lib/CRC/crc.h

   1 #pragma once
   2 #include <stdint.h>
   3 #include "targets.h"
   4
   5 #define crclen 256
   6
   7 class GENERIC_CRC8
   8 {
   9 private:
  10     uint8_t crc8tab[crclen];
  11     uint8_t crcpoly;
  12
  13 public:
  14     GENERIC_CRC8(uint8_t poly);
  15     uint8_t calc(const uint8_t data);
  16     uint8_t calc(const uint8_t *data, uint16_t len, uint8_t crc = 0);
  17 };
  18
  19 class Crc2Byte
  20 {
  21 private:
  22     uint16_t _crctab[crclen];
  23     uint8_t  _bits;
  24     uint16_t _bitmask;
  25     uint16_t _poly;
  26
  27 public:
  28     void init(uint8_t bits, uint16_t poly);
  29     uint16_t calc(uint8_t *data, uint8_t len, uint16_t crc);
  30 };