116 lines
3.3 KiB
Ruby
Executable File
116 lines
3.3 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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DEBUG = false
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@serial = SerialPort.open("/dev/ttyACM0",{ baud: 57600, databits: 8, parity: SerialPort::ODD, stop_bit: 1, flow_control: SerialPort::NONE})
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# send query/send telegram and return answer
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def comm(query,data=nil)
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telegram = Telegram.new(query,data)
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puts("< "+(telegram.pack.bytes.to_a.collect{|b| "%02x" % b})*" ") if DEBUG
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@serial.write(telegram.pack)
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answer = @serial.readpartial(3+16+1+2)
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raise "no answer received to query #{query}" if !answer or answer.empty?
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puts("> "+(answer.bytes.to_a.collect{|b| "%02x" % b})*" ") if DEBUG
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telegram = Telegram.parse(answer)
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raise "malformed answer" unless telegram
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raise telegram.to_s if (telegram.object==0 and telegram.data.length==2 and telegram.data[0]==0xff) or (telegram.object==255 and telegram.data[0]!=0)
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return telegram
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end
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# get the nominal values (voltage, current)
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def nominal_values
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return [comm(2).data.pack("C*").unpack("g")[0],comm(3).data.pack("C*").unpack("g")[0]]
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end
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# get actual values (voltage, current)
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def actual_values
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telegram = comm(71)
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voltage = telegram.data[2,2].pack("C*").unpack("n")[0]/25600.0
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current = telegram.data[4,2].pack("C*").unpack("n")[0]/25600.0
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nominal = nominal_values
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return [voltage*nominal_values[0],current*nominal_values[1]]
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end
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# get protection values (voltage, current)
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def protection_values(voltage=nil,current=nil)
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return set_values(voltage,current,true)
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end
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# set values or get set values (voltage, current)
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def set_values (voltage=nil,current=nil,protection=false)
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# set query obj and limit
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query = (protection ? [38,39,1.1] : [50,51,1.0])
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nominal = nominal_values
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if voltage then
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raise "#{voltage} out of voltage range [0-#{query[2]*nominal[0]}]" if voltage<0 or voltage>query[2]*nominal[0]
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comm(54,[0x10,0x10]) # enable remote
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value = voltage*25600.0/nominal[0]
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comm(query[0],[value].pack('n').bytes.to_a)
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end
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if current then
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comm(54,[0x10,0x10]) # enable remote
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raise "#{current} out of current range [0-#{query[2]*nominal[1]}]" if current<0 or current>query[2]*nominal[1]
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value = current*25600.0/nominal[1]
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comm(query[1],[value].pack('n').bytes.to_a)
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end
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voltage = comm(query[0]).data.pack("C*").unpack("n")[0]/25600.0
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current = comm(query[1]).data.pack("C*").unpack("n")[0]/25600.0
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nominal = nominal_values
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return [voltage*nominal_values[0],current*nominal_values[1]]
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end
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# get device information
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def device_info
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info = []
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[8,19,0,6,1,9].each do |query|
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info << comm(query).to_s[2..-1]
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end
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return info
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end
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# set output
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def output(on)
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comm(54,[0x10,0x10]) # enable remote
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comm(54,[0x01, on ? 0x01: 0x00]) # set on
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end
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# set output to on
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def on
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output(true)
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end
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# set output
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def off
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output(false)
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end
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########
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# main #
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########
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# print device information
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puts device_info*"\n"
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# set to 0 and let the capacitor discharge
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puts "setting to 42V for 10s"
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off
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set_values(42.0,0.1)
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on
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sleep 10
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off
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comm(54,[0x10,0x00])
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puts "tracking values"
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while true
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actual = actual_values
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set = set_values
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protection = protection_values
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puts "voltage (V): #{actual[0].round(2).to_s}/#{set[0].round(2).to_s} (max #{protection[0].round(2).to_s}), current (A): #{actual[1].round(2).to_s}/#{set[1].round(2).to_s} (max #{protection[1].round(2).to_s})"
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sleep 1
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end
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