Basler A600f Manuel d'utilisateur télécharger pdf (Page 152)

Smart Features

6-18 BASLER A600

DRAFT

/** \brief Verifies a frame buffer's CRC checksum

* \param pData Pointer to the frame

* \param nbyLength Size of frame in bytes

* \return 1, if the check succeeds, 0 otherwise

int CheckBuffer(const unsigned char* pData, unsigned long nbyLength )

{

unsigned long nCurrentCRC, nDesiredCRC;

/* Calculate the CRC checksum of the buffer. Don't take the last four bytes

containing the checksum into account */

nCurrentCRC = CRC16(pData, nbyLength - sizeof( unsigned long ) );

/* Retrieve the desired CRC value from the data buffer */

nDesiredCRC = ((unsigned long*) pData)[ nbyLength / sizeof ( unsigned long ) - 1];

/* Return TRUE if they are equal */

return nCurrentCRC == nDesiredCRC;

}

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Basler A600f Manuel d'utilisateur Page 152