class Digest::CRC16DNP
Implements the CRC16 DNP algorithm.
Constants
- INIT_CRC
- TABLE
Public Instance Methods
finish()
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# File lib/digest/crc16_dnp.rb, line 60 def finish self.class.pack(~@crc) end
update(data)
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Updates the CRC16 DNP checksum.
@param [String] data
The data to update the checksum with.
# File lib/digest/crc16_dnp.rb, line 52 def update(data) data.each_byte do |b| @crc = ((@crc >> 8) ^ @table[(@crc ^ b) & 0xff]) end return self end