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CRC module

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Thomas E. Horner edited this page Mar 18, 2019 · 4 revisions

This module contains functions for creating a CRC for a Lua string. It currently supports the following different crcs:

pack.crc8(text [, init-value])

Create an 8-bit crc code for the text.

Arguments:

  • text: the lua string to create the crc for
  • init-value (optional): init value to begin the crc calculation with. default is 0xFF
  • ....

Returns: crc-code of the lua string

/ > crc.crc8("test")
140

pack.crc16(text [, init-value])

Create an 16-bit crc code for the text.

Arguments:

  • text: the lua string to create the crc for
  • init-value (optional): init value to begin the crc calculation with. default is 0xFF
  • ....

Returns: crc-code of the lua string

/ > crc.crc16("test")
1193

pack.crc32(text [, init-value])

Create an 32-bit crc code for the text.

Arguments:

  • text: the lua string to create the crc for
  • init-value (optional): init value to begin the crc calculation with. default is 0xFF
  • ....

Returns: crc-code of the lua string

/ > crc.crc32("test")
113532655

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