文件名称:CalcCRC

  • 所属分类:
  • 微处理器(ARM/PowerPC等)
  • 资源属性:
  • [C/C++] [源码]
  • 上传时间:
  • 2012-11-26
  • 文件大小:
  • 1kb
  • 下载次数:
  • 0次
  • 提 供 者:
  • Farm*****
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CalcCRC8

The CalcCRC8 is used to append an eight-bit CRC to the message. A

successful CRC check results in returning a 0.

Implementation: This CRC will be using the CRC-16/CITT protocol.

A 16-bit wide non-reflected code that starts initially with 0xFFFF.

The final value is XORed with 0x0000. The constant (Poly or G or

divisor) is 0x11021. Note: Crc equals the remainder after 0x11021 has

been subtracted from rData.



Algorithm XOR s bit 7 (the MSB) of the current CRC with the current MSB

of the data byte. The current CRC and byte are then left shifted by

one. This value is then XOR ed with bits 7,4,3,1,0 of the current CRC.

This is done until all bits have been processed.-                 CalcCRC8

The CalcCRC8 is used to append an eight-bit CRC to the message. A

successful CRC check results in returning a 0.

Implementation: This CRC will be using the CRC-16/CITT protocol.

A 16-bit wide non-reflected code that starts initially with 0xFFFF.

The final value is XORed with 0x0000. The constant (Poly or G or

divisor) is 0x11021. Note: Crc equals the remainder after 0x11021 has

been subtracted from rData.



Algorithm XOR s bit 7 (the MSB) of the current CRC with the current MSB

of the data byte. The current CRC and byte are then left shifted by

one. This value is then XOR ed with bits 7,4,3,1,0 of the current CRC.

This is done until all bits have been processed.
相关搜索: crc
16
0x11021

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CalcCRC8.c

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