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- #include "crc8.h"
- unsigned char crc8( unsigned char *pData,
- unsigned int dataLen,
- unsigned char initialValue,
- unsigned char polynomial )
- {
- unsigned char i;
- unsigned char crc;
- crc = initialValue;
- while (dataLen --)
- {
- crc ^= *pData ++;
- for( i = 0; i < 8; i++ )
- {
- if(crc & 0x80)
- {
- crc <<= 1;
- crc ^= polynomial;
- }
- else
- {
- crc <<= 1;
- }
- }
- }
- return crc;
- }
- unsigned char crc8_ger( unsigned char *pData,
- unsigned int dataLen)
- {
- return crc8(pData, dataLen, 0xff, 0x31);
- }
- int crc8_gernCheckT( unsigned char *pData,
- unsigned int dataLen,
- unsigned char targetCRC)
- {
- if (crc8(pData, dataLen, 0xff, 0x31) == targetCRC)
- {
- return 1;
- }
- return 0;
- }
- int crc8_sht3x( unsigned char *pData,
- unsigned int dataLen,
- unsigned char targetCRC)
- {
- if (crc8(pData, dataLen, 0xff, 0x31) == targetCRC)
- {
- return 1;
- }
- return 0;
- }
- int crc8_sht2x( unsigned char *pData,
- unsigned int dataLen,
- unsigned char targetCRC)
- {
- if (crc8(pData, dataLen, 0x00, 0x31) == targetCRC)
- {
- return 1;
- }
- return 0;
- }
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