57 lines
2.0 KiB
Ruby
Executable File
57 lines
2.0 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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# encoding: utf-8
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# ruby: 1.9
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require 'serialport'
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require './telegram'
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# print debug info
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DEBUG = true
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# connect to PC
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pc_serial = SerialPort.open("/dev/ttyUSB0",{ baud: 57600, databits: 8, parity: SerialPort::ODD, stop_bit: 1, flow_control: SerialPort::NONE})
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while true
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activities = IO.select([pc_serial])
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activities[0].each do |activity|
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data = activity.readpartial(16+1+5)
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line = data.unpack("C*").collect { |b| sprintf("%02X ",b) }.join
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if activity==pc_serial then
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puts "> "+line if DEBUG
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begin
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telegram_in = Telegram.parse(data)
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if telegram_in then
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puts "> "+telegram_in.to_s[2..-1]
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telegram_out = case telegram_in.object
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when 0 # device type
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Telegram.new(telegram_in.object,"simulator".bytes.to_a+[0x00],false)
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when 8 # manufacturer
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Telegram.new(telegram_in.object,"EA".bytes.to_a+[0x00],false)
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when 1, 6, 9 # article no., serial no., software version
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Telegram.new(telegram_in.object,"42".bytes.to_a+[0x00],false)
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when 2,3,4 # nominal voltage, current, power
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Telegram.new(telegram_in.object,[42.0].pack("g").bytes.to_a,false)
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when 19 # device class
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Telegram.new(telegram_in.object,[0x00,0x10],false)
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when 54,150 # power supply control, unlock code
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Telegram.new(0xff,[0x00],false)
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else # error: object not defined
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Telegram.new(0xff,[0x07],false)
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end
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if telegram_out then
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puts "< "+telegram_out.to_s[2..-1] # display message
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pc_serial.write(telegram_out.pack) # send message
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end
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else
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pc_serial.baud = (pc_serial.baud==57600 ? 115200 : 57600)
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pc_serial.parity = SerialPort::ODD
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puts "could not parse message: switching baudrate to #{pc_serial.baud} bps"
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end
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rescue Exception => e
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puts e.to_s
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end
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else
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raise "unknown source"
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end
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end
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end
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