/// <summary>
/// Determines which ports have pressure switches and which do not.
/// For those that do, it reads current pressure state (good/bad).
/// </summary>
private void CheckPressureSwitches()
{
// Reset these member booleans to false on every call.
for (int i = 0; i < _checkedSwitchIsPresent.Length; i++)
{
_checkedSwitchIsPresent[i] = _checkedIsPressureGood[i] = false;
}
for (int i = 0; i < _checkedSwitchIsPresent.Length; i++)
{
_checkedSwitchIsPresent[i] = SmartCardManager.IsPressureSwitchPresent(i + 1);
if (_wasSwitchPresent[i] != _checkedSwitchIsPresent[i])
{
Thread.Sleep(500);
// Try again.
_checkedSwitchIsPresent[i] = SmartCardManager.IsPressureSwitchPresent(i + 1);
}
else if (_checkedSwitchIsPresent[i]) // If pressure switch is still present since last check, we need to then re-check the pressure.
{
// Check the pressure.
// Save the state for setting later to avoid synchronization issues.
_checkedIsPressureGood[i] = SmartCardManager.CheckPressureSwitch(i + 1);
if (_wasPressureGood[i] != _checkedIsPressureGood[i])
{
Thread.Sleep(500);
// Try again.
_checkedIsPressureGood[i] = SmartCardManager.CheckPressureSwitch(i + 1);
}
}
}
}
/// <summary>
/// If pressure switch is present, then this methods reads the pressure level from it,
/// otherwise this method returns Full.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
static private PressureLevel ReadPressureLevel(int position)
{
const string funcName = "ReadPressureLevel";
if (!SmartCardManager.IsPressureSwitchPresent(position))
{
Log.Debug(funcName + ": Cylinder " + position + " has no pressure switch. Defaulting to Full");
return(PressureLevel.Full);
}
if (SmartCardManager.CheckPressureSwitch(position))
{
Log.Debug(funcName + ": Cylinder " + position + " pressure is Full");
return(PressureLevel.Full);
}
Log.Debug(funcName + ": Cylinder " + position + " pressure is Low");
return(PressureLevel.Low);
}
/// <summary>
/// Return the information from all smart cards that are present.
/// </summary>
/// <returns>All of the installed cylinders.</returns>
static private void ReadChangedCylinders(bool[] changedSmartCards, IList <GasEndPoint> changedGasEndPoints, PortRestrictions port1Restrictions)
{
const string funcName = "ReadChangedCylinders: ";
Log.Assert(changedSmartCards != null, funcName + "changedSmartCards should not be null.");
DockingStation dockingStation = Controller.GetDockingStation(); // SGF 8-Nov-2012 INS-2686
changedGasEndPoints.Clear();
for (int i = 0; i < changedSmartCards.Length; i++)
{
int position = i + 1;
Log.Debug(funcName + "POSITION " + position);
if (changedSmartCards[position - 1] == false) // No detection of a card insertion, nor a removal?
{
Log.Debug(string.Format("{0}Position {1} Smart card SKIPPED; No insertion change detected.", funcName, position));
if (position == Controller.FRESH_AIR_GAS_PORT)
{
GasEndPoint persistedPort1GasEndPoint = new GasEndPointDataAccess().FindByPosition(Controller.FRESH_AIR_GAS_PORT);
// If there's nothing known to be installed on port 1, then create a fresh air
// cylinder for the port.
// This could happen if, while nothing was installed on the port, a SettingsUpdate
// just occurred previously where the port setting was changed to allow fresh air.
// In that situation, we have to then make the fresh air cylinder.
if (persistedPort1GasEndPoint == null)
{
Log.Debug(string.Format("{0}Position {1}, No persisted cylinder; assuming Fresh Air.", funcName, position));
GasEndPoint freshAirCylinder = GasEndPoint.CreateFreshAir(position);
freshAirCylinder.GasChangeType = GasEndPoint.ChangeType.Installed;
changedGasEndPoints.Add(freshAirCylinder);
}
}
// SGF 8-Nov-2012 INS-2686 -- begin
// Soon, we will check to see if a pressure switch is present, and if so, read the pressure level.
// Before we do that, we must check for two scenarios in which it is not necessary or appropriate
// to read a pressure switch.
// 1. If there is no cylinder attached to the port, there is no reason to check for a pressure switch.
// 2. If this is the first port, and we know that the port is drawing fresh air, there is no reason
// to check for a pressure switch. This case cannot be handled by case #1, as we define a "logical"
// cylinder to represent fresh air.
// If we find either scenario for the current port, we skip further processing on this port, and proceed to
// the next one.
GasEndPoint currentInstalledCylinder = dockingStation.GasEndPoints.Find(ic => ic.Position == position);
if (currentInstalledCylinder == null)
{
Log.Debug(string.Format("{0}Position {1} No cylinder present; do not check for pressure switch.", funcName, position));
continue;
}
else
{
bool isFreshAir = currentInstalledCylinder.Cylinder.IsFreshAir;
if (isFreshAir)
{
Log.Debug(string.Format("{0}Position {1} Fresh air; do not check for pressure switch.", funcName, position));
continue;
}
}
// SGF 8-Nov-2012 INS-2686 -- end
// SMARTCARD NOT CHANGED (NO INSERT OR REMOVAL DETECTED).
// WE NEED TO AT LEAST ALWAYS READ THE PRESSURE SWITCH THEN.
if (SmartCardManager.IsPressureSwitchPresent(position))
{
GasEndPoint pressureCylinder = new GasEndPoint();
pressureCylinder.Position = position;
pressureCylinder.Cylinder.Pressure = ReadPressureLevel(position);
pressureCylinder.GasChangeType = GasEndPoint.ChangeType.PressureChanged;
Log.Debug(string.Format("{0}Position {1} Pressure Switch reports {2}.", funcName, position, pressureCylinder.Cylinder.Pressure));
changedGasEndPoints.Add(pressureCylinder);
}
else
{
Log.Debug(string.Format("{0}Position {1} Pressure Switch not present.", funcName, position));
}
continue;
}
// IF WE MAKE IT TO HERE, THE CARD HAS BEEN EITHER INSERTED OR REMOVED.
if (!SmartCardManager.IsCardPresent(position)) // CARD REMOVED?
{
Log.Debug(string.Format("{0}Position {1} SmartCard not present, Returning CardRemoved", funcName, position));
// Server needs to know specifically that cylinder is missing.
// Indicate this with an InstalledCylinder containing an empty Cylinder object.
GasEndPoint missingCylinder = new GasEndPoint();
missingCylinder.Position = position;
missingCylinder.GasChangeType = GasEndPoint.ChangeType.Uninstalled;
changedGasEndPoints.Add(missingCylinder);
// If a cylinder is not installed on the fresh air port, then assume fresh air
// for the port
if (position == Controller.FRESH_AIR_GAS_PORT)
{
Log.Debug(string.Format("{0}Position {1} is assumed to be Fresh Air.", funcName, position));
GasEndPoint freshAirCylinder = GasEndPoint.CreateFreshAir(position);
freshAirCylinder.GasChangeType = GasEndPoint.ChangeType.Installed;
changedGasEndPoints.Add(freshAirCylinder);
}
continue;
}
// IF WE MAKE IT TO HERE, THE CARD HAS BEEN INSERTED.
Cylinder cylinder = SmartCardManager.ReadCard(position);
if (cylinder == null) // Couldn't read valid cylinder? Driver error or corrupt card.
{
Log.Debug(string.Format("{0}Position {1}, ReadCard returned null. SKIPPING cylinder.", funcName, position));
continue;
}
// Dates read from card will be in 'local' time, but everything we deal with is in UTC.
cylinder.ExpirationDate = Configuration.ToUniversalTime(cylinder.ExpirationDate);
cylinder.RefillDate = Configuration.ToUniversalTime(cylinder.RefillDate);
Thread.Sleep(1000);
cylinder.Pressure = ReadPressureLevel(position);
GasEndPoint gasEndPoint = new GasEndPoint(cylinder, position, GasEndPoint.Type.iGas);
gasEndPoint.GasChangeType = GasEndPoint.ChangeType.Installed;
Log.Debug(string.Format("{0}Position {1}, Returning CardInserted. Pressure={2}", funcName, position, cylinder.Pressure));
changedGasEndPoints.Add((GasEndPoint)gasEndPoint.Clone());
} // end-for
return;
}
/// <summary>
/// Return the information from all smart cards, manifolds and manual cylinders that are present at start-up.
/// </summary>
/// <param name="installedCylinders">Information about the cylinders is placed into this passed-in list.</param>
static private void ReadInstalledCylinders(List <GasEndPoint> gasEndPoints, PortRestrictions port1Restrictions)
{
const string funcName = "ReadInstalledCylinders: ";
// Get all currently attached manifolds and manually-assigned cylinders.
List <GasEndPoint> manGasEndPoints
= new GasEndPointDataAccess().FindAll().FindAll(m => m.InstallationType == GasEndPoint.Type.Manifold ||
m.InstallationType == GasEndPoint.Type.Manual);
for (int position = 1; position <= Configuration.DockingStation.NumGasPorts; position++)
{
Log.Debug(funcName + "POSITION " + position);
// iGas cylinders take precendence
if (!SmartCardManager.IsCardPresent(position))
{
Log.Debug(string.Format("{0}Position {1}, No iGas card detected.", funcName, position));
// Does the port have a manifold or manual cylinder attached? Then make sure we include
// that cylinder in the returned list. If no cylinder exists on port 1, then create a
// virtual fresh air cylinder.
GasEndPoint man = manGasEndPoints.Find(m => m.Position == position);
if (man != null)
{
Log.Debug(string.Format("{0}Position {1} {2} found (\"{3}\", \"{4}\", Pressure {5}).", funcName, position,
man.InstallationType == GasEndPoint.Type.Manifold ? "Manifold" : "Manual Cylinder",
man.Cylinder.FactoryId, man.Cylinder.PartNumber, man.Cylinder.Pressure));
gasEndPoints.Add(man);
}
else if (position == Controller.FRESH_AIR_GAS_PORT)
{
Log.Debug(string.Format("{0}Position {1} is assumed to be Fresh Air.", funcName, position));
GasEndPoint freshAirEndPoint = GasEndPoint.CreateFreshAir(position);
freshAirEndPoint.GasChangeType = GasEndPoint.ChangeType.Installed;
gasEndPoints.Add(freshAirEndPoint);
}
continue;
}
// IF WE MAKE IT TO HERE, THEN WE KNOW WE HAVE AN INSERTED SMART CARD WHICH MEANS iGas IS ATTACHED.
Cylinder cylinder = SmartCardManager.ReadCard(position);
if (cylinder == null) // Check for a valid cylinder.
{
Log.Debug(string.Format("{0}Position {1}, ReadCard returned null. SKIPPING cylinder.", funcName, position));
continue;
}
// Dates read from card will be in 'local' time, but everything we deal with is in UTC.
cylinder.ExpirationDate = Configuration.ToUniversalTime(cylinder.ExpirationDate);
cylinder.RefillDate = Configuration.ToUniversalTime(cylinder.RefillDate);
Thread.Sleep(1000);
if (SmartCardManager.IsPressureSwitchPresent(position))
{
if (SmartCardManager.CheckPressureSwitch(position))
{
cylinder.Pressure = PressureLevel.Full;
}
else
{
cylinder.Pressure = PressureLevel.Low;
}
Log.Debug(string.Format("{0}Position {1} Pressure Switch reports {2}.", funcName, position, cylinder.Pressure));
}
else
{
Log.Debug(string.Format("{0}Position {1} Pressure Switch not detected.", funcName, position));
}
GasEndPoint gasEndPoint = new GasEndPoint(cylinder, position, GasEndPoint.Type.iGas);
// Add the installed cylinder to the DockingStation (IDS).
gasEndPoints.Add(gasEndPoint);
}
return;
}
