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15 lines
304 B
C
15 lines
304 B
C
#include "crc16.h"
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unsigned short update_crc16( unsigned short crc, unsigned char c )
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{
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unsigned short i, v, tcrc = 0;
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v = (crc ^ c) & 0xff;
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for (i = 0; i < 8; i++) {
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tcrc = ( (tcrc ^ v) & 1 ) ? ( tcrc >> 1 ) ^ 0x8408 : tcrc >> 1;
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v >>= 1;
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}
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return ((crc >> 8) ^ tcrc)&0xffff;
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}
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