class LadderDrive::IntelHex
Attributes
codes[R]
offset[R]
Public Class Methods
load(path)
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# File lib/ladder_drive/intel_hex.rb, line 30 def self.load path offset = 0 codes = [] File.read(path).lines.each do |l| case l[7,2] when "00" address = l[3,4].to_i(16) offset ||= address l.chomp[9..-3].each_char.each_slice(2).each_with_index do |pair, i| codes[address - offset + i] = pair.join("").to_i(16) end end end new codes, offset end
new(codes, offset = 0)
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# File lib/ladder_drive/intel_hex.rb, line 46 def initialize codes, offset = 0 @offset = offset @codes = codes end
Public Instance Methods
dump()
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# File lib/ladder_drive/intel_hex.rb, line 55 def dump addr = offset lines = [] @codes.each_slice(16) do |line_codes| c = line_codes.size s = ":#{c.to_s(16).rjust(2, '0')}" s << "#{addr.to_s(16).rjust(4, '0')}" s << "00" line_codes.each do |code| s << "#{code.to_s(16).rjust(2, '0')}" end check_sum = 256 - (s[1..-1].scan(/.{2}/).inject(0){|sum, code| sum += code.to_i(16)} & 0xff) s << "#{check_sum.to_s(16).rjust(2, '0')}" lines << s addr += c end lines << ":00000001FF" lines << "" lines.join("\n") end
write_to(path)
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# File lib/ladder_drive/intel_hex.rb, line 51 def write_to path File.write(path, dump) end