class Digest::CRC8
Implements the CRC8 algorithm.
Constants
- INIT_CRC
- TABLE
Generated by `./pycrc.py –algorithm=table-driven –model=crc-8 –generate=c`
- WIDTH
Public Class Methods
pack(crc)
click to toggle source
Packs the CRC8 checksum.
@param [Integer] crc
The checksum to pack.
@return [String]
The packed checksum.
# File lib/digest/crc8.rb, line 42 def self.pack(crc) (crc & 0xff).chr end
Public Instance Methods
update(data)
click to toggle source
Updates the CRC8 checksum.
@param [String] data
The data to update the checksum with.
# File lib/digest/crc8.rb, line 52 def update(data) data.each_byte do |b| @crc = ((@table[(@crc ^ b) & 0xff] ^ (@crc << 8)) & 0xff) end return self end