Microscan HS-2D Manual do Utilizador descarregar pdf (Página 164)

A-46 HS-21/HS-41X Handheld Reader User’s Manual

Serial Commands

CRC16.c:

// crc16.c

#include <crc16.h>

crc_t crc

( crc_t initialCrc

, const unsigned char* p

, size_t n

)

{

enum

{

crcBits = 16,

charBits = 8,

diffBits = crcBits - charBits

};

crc_t c = initialCrc;

#include "crc16tab.h"

while( n-- )

c = (c << charBits) ^ crcTab[( c >> diffBits ) ^ *p++];

return c;

}

/*eof*/

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