Class: KuroRs::KuroRs

Inherits:
Object
  • Object
show all
Defined in:
lib/kuro-rs/main.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(device_name) ⇒ KuroRs

Returns a new instance of KuroRs.



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# File 'lib/kuro-rs/main.rb', line 29

def initialize(device_name)
  @device_name = device_name
  @verbose = false
  @busy = false
  if !File.exists? device_name.to_s
    device_name = "nil" if device_name.to_s.size < 1
    raise Error.new "device not found (#{device_name})"
  end
  @sp = SerialPort.new(device_name, 115200, 8, 1, 0)
end

Instance Attribute Details

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/kuro-rs/main.rb', line 19

def verbose
  @verbose
end

Instance Method Details

#busy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kuro-rs/main.rb', line 21

def busy? 
  @busy
end

#close ⇒ Object 



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# File 'lib/kuro-rs/main.rb', line 40

def close
  @sp.close
end

#read ⇒ Object 



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# File 'lib/kuro-rs/main.rb', line 44

def read
  @busy = true
  begin
    ## request reading mode
    @sp.write 'c'
    @sp.write 'r'
    puts 'read mode' if @verbose
    raise Error.new 'response is not "Y"' unless @sp.getc.chr == 'Y'
    timeout(15) do
      while @sp.getc.chr != 'S' do end
    end

    ## read data
    puts 'reading data..' if @verbose
    data = (0...240).to_a.map{|i| @sp.getc} # read 240 Bytes
    raise Error.new 'response is not "E"' unless @sp.getc.chr == 'E'
  rescue Error, StandardError => e
    @busy = false
    raise Error.new e
  rescue Timeout::Error
    @busy = false
    raise Error.new 'no response'
  end
  
  ## hex dump
  hex_str = data.map{|i|
    h = i.to_s(16)
    h = "0#{h}" if h.size < 2
    h
  }.join('')
  @busy = false
  return hex_str
end

#serialport ⇒ Object 



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# File 'lib/kuro-rs/main.rb', line 25

def serialport
  @sp
end

#write(hex_str) ⇒ Object 



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# File 'lib/kuro-rs/main.rb', line 78

def write(hex_str)
  @busy = true
  ## request writing mode
  begin
    @sp.write 'c'
    @sp.write 't'
    raise Error.new 'response is not "Y"' unless @sp.getc.chr == 'Y'
    @sp.write '1'
    raise Error.new 'response is not "Y"' unless @sp.getc.chr == 'Y'
  rescue Error, StandardError => e
    @busy = false
    raise Error.new e
  end

  ## write hex string
  cmd_arr = []
  arr = hex_str.split('')
  240.times do
    cmd_arr << ((arr.shift || '0') + (arr.shift || '0')).hex
  end
  
  puts "command size:#{hex_str.size/2}(Bytes)" if @verbose
  puts 'writing data...' if @verbose
  begin
    cmd_arr.each{|c|
      @sp.putc c
    }
    raise Error.new 'response is not E' unless @sp.getc.chr == 'E'
    @busy = false
  rescue => e
    @busy = false
    raise Error.new e
  end
end