128 lines
3.3 KiB
C#
128 lines
3.3 KiB
C#
///
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/// Copyright (c) 2013-2016 Sensus Metering Systems
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///
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using System;
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using System.Collections.Generic;
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using log4net;
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using TBF.Boxes;
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namespace TBF.BenchControl.Elde.RegisterReader
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{
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public class RegisterReader : ComponentBase, GenericDevices.IRegisterReader, IOperation
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{
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private static readonly ILog log = LogManager.GetLogger(typeof(RegisterReader));
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public override string ToString() { return string.Format("RegisterReader({0})", Cfg.ToString(1)); }
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readonly RegisterReaderCfg registerReaderCfg;
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public int Position { get { return registerReaderCfg.Position; } } /// 1 .. inf
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///
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public double PulsesPerLtr { get { return (double)registerReaderCfg.ProcParams.PulsesPerLtr; } }
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public double LtrsPerPulse { get { return (PulsesPerLtr <= float.Epsilon) ? 1.0 : (1 / PulsesPerLtr); ; } }
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public int WMPulses { get { return wmPulses; } }
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public int WMRefPulses { get { return wmRefPulses; } }
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public double WMVolume { get { return LtrsPerPulse * (double)wmPulses; } }
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int wmPulses;
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int wmRefPulses;
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/// <summary> This is to cope with counter overflow </summary>
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int lastPulses;
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bool lastPulsesValid;
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readonly ControlBoardDev controlBoard;
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public RegisterReader()
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{
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Clear();
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}
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public RegisterReader(Generic.IComponentCfg cfg, IList<Generic.IComponent> components)
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: base(cfg)
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{
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registerReaderCfg = cfg as RegisterReaderCfg;
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controlBoard = (ControlBoardDev)TbfComponents.FindComponent(cfg.ParentName, components);
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if (controlBoard == null) throw new Exception("Cannot find " + Name + " parent");
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/// Prepare data for SendCalibData() control board component method
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log.Debug(this.ToString());
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}
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public void Clear()
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{
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wmPulses = 0;
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wmRefPulses = 0;
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lastPulsesValid = false;
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}
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public void TestCompleted()
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{
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ReadPulses();
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}
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/// <summary>
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/// Events: Event.ReadRegisterDone, Event.Error
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/// </summary>
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/// <returns>ReadWaterMeter instance reference casted to IOperaton</returns>
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public IOperation ReadRegisterOp()
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{
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return this;
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}
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private void ReadPulses()
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{
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if (!lastPulsesValid)
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{
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lastPulses = (int)controlBoard.WMeterPulses(Position);
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lastPulsesValid = true;
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}
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else
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{
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UInt16 lowerWord = controlBoard.WMeterPulses(Position);
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int uncorrected = (int)(((uint)lastPulses & 0xFFFF0000) | lowerWord);
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if (Math.Abs(uncorrected - lastPulses) <= Int16.MaxValue)
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{
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lastPulses = uncorrected;
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}
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else if (Math.Abs(uncorrected + 65536 - lastPulses) <= Int16.MaxValue)
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{
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lastPulses = uncorrected + 65536;
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}
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else if (Math.Abs(uncorrected - 65536 - lastPulses) <= Int16.MaxValue)
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{
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lastPulses = uncorrected - 65536;
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}
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}
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wmPulses = lastPulses;
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wmRefPulses = (int)controlBoard.EtPulses(Position);
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log.DebugFormat("Register={0} WM={1} Reference={2} Not-gated-ref={3}", Name, wmPulses, wmRefPulses, (int)controlBoard.EtPulses(0));
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}
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/// <summary>Start this operation</summary>
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public void Start()
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{
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lastPulsesValid = false;
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ReadPulses();
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}
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/// <summary>Run this operation</summary>
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/// <returns>eventDone</returns>
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public Event Run()
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{
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ReadPulses();
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return Event.ReadRegisterDone;
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}
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/// <summary>Stop this operation</summary>
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public void Stop()
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{
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}
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}
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}
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