17 lines
240 B
C
17 lines
240 B
C
#include "crc_ccitt.h"
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//查表法计算crc
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uint16_t do_crc_table(uint8_t *ptr, int len)
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{
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uint16_t crc = 0x0000;
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while(len--)
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{
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crc = (crc >> 8) ^ crc_table[(crc ^ *ptr++) & 0xff];
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}
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return crc;
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}
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