146 lines
4.1 KiB
C#
146 lines
4.1 KiB
C#
///
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/// Copyright (c) 2017 Sensus Metering Systems
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///
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using log4net;
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namespace TBF.BenchControl.Modbus.TankSelector
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{
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public class SelectTankOp : IOperation
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{
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private static readonly ILog log = LogManager.GetLogger(typeof(SelectTankOp));
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TankSelector tankSelector;
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TankId tankId;
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ushort bitMask;
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ushort unselectBitMask;
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bool alreadySet;
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bool unselectedWaitLevel;
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bool doUnselect;
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int time;
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public SelectTankOp(TankSelector tankSelector, TankId tankId)
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{
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this.tankSelector = tankSelector;
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this.tankId = tankId; /// tankId is always TankId.Cold, TankId.Warm or TankId.Hot
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this.bitMask = (ushort)((tankId == TankId.Cold) ? QuidoOutputs.SelectColdTank
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: (tankId == TankId.Warm) ? QuidoOutputs.SelectWarmTank
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: QuidoOutputs.SelectHotTank);
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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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if (tankSelector.CurrentActivity == Activity.Selected && tankSelector.CurrentTank == tankId)
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{
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alreadySet = true; /// Nothing to be done in Run()
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unselectedWaitLevel = false;
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doUnselect = false;
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}
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else if (tankSelector.CurrentActivity == Activity.Selected_Waiting1min && tankSelector.CurrentTank == tankId)
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{
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alreadySet = false;
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unselectedWaitLevel = false;
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doUnselect = false;
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time = 1; /// Skip resetting button bit in Run(), wait 1 min.
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}
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else if (tankSelector.CurrentActivity == Activity.Idle ||
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tankSelector.CurrentActivity == Activity.Unknown)
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{
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SelectTankFromIdleState();
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}
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else if (tankSelector.CurrentActivity == Activity.Unselected_WaitingLevel)
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{
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alreadySet = false;
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unselectedWaitLevel = true;
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doUnselect = false;
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}
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else if (tankSelector.CurrentActivity == Activity.Selected ||
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tankSelector.CurrentActivity == Activity.Selected_Waiting1min)
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{
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///
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/// it follows that (tankSelector.CurrentTank != tankId) => unselect the tank first
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///
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alreadySet = false;
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unselectedWaitLevel = false;
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doUnselect = true;
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TankId selectedTankId = tankSelector.CurrentTank;
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unselectBitMask = (ushort)((selectedTankId == TankId.Cold) ? QuidoOutputs.PumpToColdTank
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: (selectedTankId == TankId.Warm) ? QuidoOutputs.PumpToWarmTank
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: QuidoOutputs.PumpToHotTank);
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tankSelector.State = (selectedTankId == TankId.Cold) ? State.ColdTankUnselected_WaitingLevel
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: (selectedTankId == TankId.Warm) ? State.WarmTankUnselected_WaitingLevel
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: State.HotTankUnselected_WaitingLevel;
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tankSelector.SetBit(unselectBitMask);
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}
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log.DebugFormat("Start() alreadySet={0} unselectedWaitLevel={1} doUnselect={2} time={3} tankId={4}", alreadySet, unselectedWaitLevel, doUnselect, time, tankId);
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}
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void SelectTankFromIdleState()
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{
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/// tankId is always TankId.Cold, TankId.Warm or TankId.Hot
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tankSelector.State = (tankId == TankId.Cold) ? State.ColdTankSelected_Waiting1min
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: (tankId == TankId.Warm) ? State.WarmTankSelected_Waiting1min
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: State.HotTankSelected_Waiting1min;
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alreadySet = false;
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unselectedWaitLevel = false;
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doUnselect = false;
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time = 0; /// Reset button bit in Run(), wait 1 min.
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tankSelector.SetBit(bitMask);
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}
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/// <summary>Run this operation</summary>
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public Event Run()
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{
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log.DebugFormat("Run() alreadySet={0} unselectedWaitLevel={1} doUnselect={2} time={3} tankId={4}", alreadySet, unselectedWaitLevel, doUnselect, time, tankId);
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if (alreadySet)
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{
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return Event.ConditionMet;
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}
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else if (doUnselect)
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{
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tankSelector.ResetBit(unselectBitMask);
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doUnselect = false;
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unselectedWaitLevel = true;
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return Event.ConditionNotMet;
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}
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else if (unselectedWaitLevel)
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{
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if (tankSelector.CurrentActivity == Activity.Idle)
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{
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SelectTankFromIdleState();
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}
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return Event.ConditionNotMet;
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}
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else if (time == 0)
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{
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tankSelector.ResetBit(bitMask);
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time++;
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return Event.ConditionNotMet;
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}
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else if (time <= 60)
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{
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time++;
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return Event.ConditionNotMet;
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}
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else
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{
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return Event.ConditionMet;
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}
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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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