ESCrcKchipFast.h

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#ifndef ESCrcKchipFast_H
#define ESCrcKchipFast_H
 
#include <cstdint>
 
class ESCrcKchipFast {
 
   private :
 
     uint32_t crc;
 
   public:
 
      ESCrcKchipFast() {
         init();
         reset() ;
      };
 
      void init() {
        crc = 0x0ffff ;
      }
 
      void reset() {
        crc = 0x0ffff ;
      } ;
 
      void add(unsigned int data) {
    for (int i=0;i<16;i++)
      {
        if ((crc&0x0001) == (data&0x0001))
          crc=crc>>1;
        else
          crc=(crc>>1)^0x8408; // flipped 0x1021;
        data=(data>>1);
      }
      };
      
      uint32_t get_crc() {
        return crc ;
      };
      
      bool isCrcOk(unsigned int crcin=0x0000) {
          return ((get_crc()==crcin) ? true : false );
      };
 
      ~ESCrcKchipFast() { } ;
 
};
 
#endif