ColinD
f4c26d777b
Corrected the Command logged messages to use the correct info. Added a try catch to the setup dialog to see if an error occurs to give a better message.
603 lines
27 KiB
C#
603 lines
27 KiB
C#
//
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// ================
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// Shared Resources
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// ================
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//
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// This class is a container for all shared resources that may be needed
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// by the drivers served by the Local Server.
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//
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// NOTES:
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//
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// * ALL DECLARATIONS MUST BE STATIC HERE!! INSTANCES OF THIS CLASS MUST NEVER BE CREATED!
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//
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// Written by: Bob Denny 29-May-2007
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// Modified by Chris Rowland and Peter Simpson to hamdle multiple hardware devices March 2011
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//
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Runtime.InteropServices;
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using System.Security.AccessControl;
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using System.Threading;
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using System.Windows.Forms;
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using ASCOM.DeviceInterface;
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using ASCOM.Meade.net.Wrapper;
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using ASCOM.Utilities;
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using ASCOM.Utilities.Interfaces;
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namespace ASCOM.Meade.net
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{
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/// <summary>
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/// The resources shared by all drivers and devices, in this example it's a serial port with a shared SendMessage method
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/// an idea for locking the message and handling connecting is given.
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/// In reality extensive changes will probably be needed.
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/// Multiple drivers means that several applications connect to the same hardware device, aka a hub.
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/// Multiple devices means that there are more than one instance of the hardware, such as two focusers.
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/// In this case there needs to be multiple instances of the hardware connector, each with it's own connection count.
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/// </summary>
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public static class SharedResources
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{
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// object used for locking to prevent multiple drivers accessing common code at the same time
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private static readonly object LockObject = new object();
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// Shared serial port. This will allow multiple drivers to use one single serial port.
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private static ISerial _sSharedSerial; // Shared serial port
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//
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// Public access to shared resources
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//
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#region single serial port connector
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//
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// this region shows a way that a single serial port could be connected to by multiple
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// drivers.
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//
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// Connected is used to handle the connections to the port.
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//
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// SendMessage is a way that messages could be sent to the hardware without
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// conflicts between different drivers.
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//
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// All this is for a single connection, multiple connections would need multiple ports
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// and a way to handle connecting and disconnection from them - see the
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// multi driver handling section for ideas.
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//
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/// <summary>
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/// Shared serial port. Do not directly access this method.
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/// </summary>
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public static ISerial SharedSerial
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{
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get => _sSharedSerial ?? (_sSharedSerial = new Serial());
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set => _sSharedSerial = value;
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}
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public static IProfileFactory ProfileFactory
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{
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get => _profileFactory ?? (_profileFactory = new ProfileFactory());
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set => _profileFactory = value;
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}
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//todo add code to ensure that there is a minimum gap between commands. 5ms as default.
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public static void SendBlind(string message, bool raw = false)
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{
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lock (LockObject)
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{
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SharedSerial.ClearBuffers();
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var encodedMessage = raw ? message : $"#:{message}#";
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SharedSerial.Transmit(encodedMessage);
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}
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}
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/// <summary>
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/// Example of a shared SendMessage method, the lock
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/// prevents different drivers tripping over one another.
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/// It needs error handling and assumes that the message will be sent unchanged
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/// and that the reply will always be terminated by a "#" character.
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/// </summary>
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/// <param name="message"></param>
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/// <param name="raw"></param>
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/// <returns></returns>
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public static string SendString(string message, bool raw = false)
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{
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lock (LockObject)
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{
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SharedSerial.ClearBuffers();
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var encodedMessage = raw ? message : $"#:{message}#";
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SharedSerial.Transmit(encodedMessage);
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try
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{
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return SharedSerial.ReceiveTerminated("#").TrimEnd('#');
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}
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catch (COMException ex)
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{
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if (ex.Message.Contains("Timed out waiting for received data"))
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throw new TimeoutException(ex.Message, ex);
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throw;
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}
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}
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}
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public static bool SendBool(string command, bool raw = false)
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{
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var result = SendChar(command, raw);
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return result == "1";
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}
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public static string SendChar(string command, bool raw = false)
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{
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return SendChars(command, raw, count: 1);
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}
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public static string SendChars(string command, bool raw = false, int count = 1)
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{
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lock (LockObject)
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{
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SharedSerial.ClearBuffers();
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var encodedMessage = raw ? command : $"#:{command}#";
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SharedSerial.Transmit(encodedMessage);
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try
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{
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return SharedSerial.ReceiveCounted(count);
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}
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catch (COMException ex) when (ex.Message.Contains("Timed out waiting for received data"))
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{
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throw new TimeoutException(ex.Message, ex);
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}
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}
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}
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public static string ReadTerminated()
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{
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lock (LockObject)
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{
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return SharedSerial.ReceiveTerminated("#");
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}
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}
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public static void ReadCharacters(int throwAwayCharacters)
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{
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lock (LockObject)
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{
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SharedSerial.ReceiveCounted(throwAwayCharacters);
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}
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}
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#endregion
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#region Profile
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private const string DriverId = "ASCOM.MeadeGeneric.Telescope";
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// Constants used for Profile persistence
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private const string ComPortProfileName = "COM Port";
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private const string RtsDtrProfileName = "Rts / Dtr";
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private const string TraceStateProfileName = "Trace Level";
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private const string GuideRateProfileName = "Guide Rate Arc Seconds Per Second";
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private const string PrecisionProfileName = "Precision";
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private const string GuidingStyleProfileName = "Guiding Style";
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private const string BacklashCompensationName = "Backlash Compensation";
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private const string ReverseFocusDirectionName = "Reverse Focuser Direction";
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private const string DynamicBreakingName = "Dynamic Breaking";
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private const string SiteElevationName = "Site Elevation";
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private const string SettleTimeName = "Settle Time";
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private const string SpeedName = "Speed";
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private const string DataBitsName = "Data Bits";
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private const string StopBitsName = "Stop Bits";
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private const string HandShakeName = "Hand Shake";
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private const string ParityName = "Parity";
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private const string SendDateTimeName = "Send Date and time on connect";
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private const string ParkedBehaviourName = "Parked Behaviour";
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private const string ParkedAltName = "Parked Altitude";
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private const string ParkedAzimuthName = "Parked Azimuth";
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public static void WriteProfile(ProfileProperties profileProperties)
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{
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lock (LockObject)
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{
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using (IProfileWrapper driverProfile = ProfileFactory.Create())
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{
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driverProfile.DeviceType = "Telescope";
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driverProfile.WriteValue(DriverId, TraceStateProfileName, profileProperties.TraceLogger.ToString());
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driverProfile.WriteValue(DriverId, ComPortProfileName, profileProperties.ComPort);
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driverProfile.WriteValue(DriverId, RtsDtrProfileName, profileProperties.RtsDtrEnabled.ToString());
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driverProfile.WriteValue(DriverId, SpeedName, profileProperties.Speed.ToString(CultureInfo.InvariantCulture));
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driverProfile.WriteValue(DriverId, DataBitsName, profileProperties.DataBits.ToString(CultureInfo.InvariantCulture));
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driverProfile.WriteValue(DriverId, StopBitsName, profileProperties.StopBits);
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driverProfile.WriteValue(DriverId, HandShakeName, profileProperties.Handshake);
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driverProfile.WriteValue(DriverId, ParityName, profileProperties.Parity);
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driverProfile.WriteValue(DriverId, GuideRateProfileName, profileProperties.GuideRateArcSecondsPerSecond.ToString(CultureInfo.InvariantCulture));
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driverProfile.WriteValue(DriverId, PrecisionProfileName, profileProperties.Precision);
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driverProfile.WriteValue(DriverId, GuidingStyleProfileName, profileProperties.GuidingStyle);
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driverProfile.WriteValue(DriverId, BacklashCompensationName, profileProperties.BacklashCompensation.ToString());
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driverProfile.WriteValue(DriverId, ReverseFocusDirectionName, profileProperties.ReverseFocusDirection.ToString());
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driverProfile.WriteValue(DriverId, DynamicBreakingName, profileProperties.DynamicBreaking.ToString());
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driverProfile.WriteValue(DriverId, SiteElevationName, profileProperties.SiteElevation.ToString(CultureInfo.InvariantCulture));
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driverProfile.WriteValue(DriverId, SettleTimeName, profileProperties.SettleTime.ToString());
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driverProfile.WriteValue(DriverId, SendDateTimeName, profileProperties.SendDateTime.ToString());
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driverProfile.WriteValue(DriverId, ParkedBehaviourName, profileProperties.ParkedBehaviour.GetDescription());
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driverProfile.WriteValue(DriverId, ParkedAltName, profileProperties.ParkedAlt.ToString(CultureInfo.InvariantCulture));
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driverProfile.WriteValue(DriverId, ParkedAzimuthName, profileProperties.ParkedAz.ToString(CultureInfo.InvariantCulture));
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}
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}
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}
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private const string ComPortDefault = "COM1";
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private const string RtsDtrDefault = "false";
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private const string TraceStateDefault = "false";
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private const string GuideRateProfileNameDefault = "10.077939"; //67% of sidereal rate
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private const string PrecisionDefault = "Unchanged";
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private const string GuidingStyleDefault = "Auto";
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private const string BacklashCompensationDefault = "3000";
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private const string ReverseFocuserDiectionDefault = "true";
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private const string DynamicBreakingDefault = "true";
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private const string SiteElevationDefault = "0";
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private const string SettleTimeDefault = "2";
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private const string SpeedDefault = "9600";
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private const string DataBitsDefault = "8";
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private const string StopBitsDefault = "One";
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private const string HandShakeDefault = "None";
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private const string ParityDefault = "None";
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private const string SendDateTimeDefault = "false";
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private const string ParkedBehaviourDefault = "No Coordinates";
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private const string ParkedAltDefault = "0";
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private const string ParkedAzimuthDefault = "180";
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public static ProfileProperties ReadProfile()
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{
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lock (LockObject)
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{
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ProfileProperties profileProperties = new ProfileProperties();
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using (IProfileWrapper driverProfile = ProfileFactory.Create())
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{
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driverProfile.DeviceType = "Telescope";
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profileProperties.ComPort = driverProfile.GetValue(DriverId, ComPortProfileName, string.Empty, ComPortDefault);
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profileProperties.RtsDtrEnabled = Convert.ToBoolean(driverProfile.GetValue(DriverId, RtsDtrProfileName, string.Empty, RtsDtrDefault));
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profileProperties.TraceLogger = Convert.ToBoolean(driverProfile.GetValue(DriverId, TraceStateProfileName, string.Empty, TraceStateDefault));
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profileProperties.GuideRateArcSecondsPerSecond = double.Parse(driverProfile.GetValue(DriverId, GuideRateProfileName, string.Empty, GuideRateProfileNameDefault), NumberFormatInfo.InvariantInfo);
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profileProperties.Precision = driverProfile.GetValue(DriverId, PrecisionProfileName, string.Empty, PrecisionDefault);
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profileProperties.GuidingStyle = driverProfile.GetValue(DriverId, GuidingStyleProfileName, string.Empty, GuidingStyleDefault);
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profileProperties.BacklashCompensation = Convert.ToInt32(driverProfile.GetValue(DriverId, BacklashCompensationName, string.Empty, BacklashCompensationDefault));
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profileProperties.ReverseFocusDirection = Convert.ToBoolean(driverProfile.GetValue(DriverId, ReverseFocusDirectionName, string.Empty, ReverseFocuserDiectionDefault));
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profileProperties.DynamicBreaking = Convert.ToBoolean(driverProfile.GetValue(DriverId, DynamicBreakingName, string.Empty, DynamicBreakingDefault));
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profileProperties.SiteElevation = Convert.ToInt32(driverProfile.GetValue(DriverId, SiteElevationName, string.Empty, SiteElevationDefault));
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profileProperties.SettleTime = Convert.ToInt16(driverProfile.GetValue(DriverId, SettleTimeName, string.Empty, SettleTimeDefault));
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profileProperties.StopBits = driverProfile.GetValue(DriverId, StopBitsName, string.Empty, StopBitsDefault);
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profileProperties.DataBits = Convert.ToInt32(driverProfile.GetValue(DriverId, DataBitsName, string.Empty, DataBitsDefault));
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profileProperties.Handshake = driverProfile.GetValue(DriverId, HandShakeName, string.Empty, HandShakeDefault);
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profileProperties.Speed = Convert.ToInt32(driverProfile.GetValue(DriverId, SpeedName, string.Empty, SpeedDefault));
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profileProperties.Parity = driverProfile.GetValue(DriverId, ParityName, string.Empty, ParityDefault);
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profileProperties.SendDateTime = Convert.ToBoolean(driverProfile.GetValue(DriverId, SendDateTimeName, string.Empty, SendDateTimeDefault));
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profileProperties.ParkedBehaviour = EnumExtensionMethods.GetValueFromDescription<ParkedBehaviour>(driverProfile.GetValue(DriverId, ParkedBehaviourName, string.Empty, ParkedBehaviourDefault));
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profileProperties.ParkedAlt = double.Parse(driverProfile.GetValue(DriverId, ParkedAltName, string.Empty, ParkedAltDefault), NumberFormatInfo.InvariantInfo);
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profileProperties.ParkedAz = double.Parse(driverProfile.GetValue(DriverId, ParkedAzimuthName, string.Empty, ParkedAzimuthDefault), NumberFormatInfo.InvariantInfo);
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}
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return profileProperties;
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}
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}
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#endregion
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#region SetupDialog
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public static void SetupDialog()
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{
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try
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{
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var profileProperties = ReadProfile();
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using (SetupDialogForm f = new SetupDialogForm())
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{
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f.SetProfile(profileProperties);
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if (IsConnected())
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{
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f.SetReadOnlyMode();
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}
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var result = f.ShowDialog();
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if (result == DialogResult.OK)
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{
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profileProperties = f.GetProfile();
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WriteProfile(
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profileProperties); // Persist device configuration values to the ASCOM Profile store
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}
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}
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}
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catch (Exception e)
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{
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Console.WriteLine(e);
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throw;
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}
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}
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#endregion
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#region Multi Driver handling
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public static string ProductName { get; private set; } = string.Empty;
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public static string FirmwareVersion { get; private set; } = string.Empty;
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// this section illustrates how multiple drivers could be handled,
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// it's for drivers where multiple connections to the hardware can be made and ensures that the
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// hardware is only disconnected from when all the connected devices have disconnected.
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// It is NOT a complete solution! This is to give ideas of what can - or should be done.
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//
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// An alternative would be to move the hardware control here, handle connecting and disconnecting,
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// and provide the device with a suitable connection to the hardware.
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//
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/// <summary>
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/// dictionary carrying device connections.
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/// The Key is the connection number that identifies the device, it could be the COM port name,
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/// USB ID or IP Address, the Value is the DeviceHardware class
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/// </summary>
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private static readonly Dictionary<string, DeviceHardware> ConnectedDevices = new Dictionary<string, DeviceHardware>();
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private static readonly Dictionary<string, DeviceHardware> ConnectedDeviceIds = new Dictionary<string, DeviceHardware>();
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private static IProfileFactory _profileFactory;
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/// <summary>
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/// This is called in the driver Connect(true) property,
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/// it add the device id to the list of devices if it's not there and increments the device count.
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/// </summary>
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/// <param name="deviceId"></param>
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/// <param name="driverId"></param>
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/// <param name="traceLogger"></param>
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public static ConnectionInfo Connect(string deviceId, string driverId, ITraceLogger traceLogger)
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{
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lock (LockObject)
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{
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if (!ConnectedDevices.ContainsKey(deviceId))
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ConnectedDevices.Add(deviceId, new DeviceHardware());
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if (!ConnectedDeviceIds.ContainsKey(driverId))
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ConnectedDeviceIds.Add(driverId, new DeviceHardware());
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if (deviceId == "Serial")
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{
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if (ConnectedDevices[deviceId].Count == 0)
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{
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var profileProperties = ReadProfile();
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SharedSerial.PortName = profileProperties.ComPort;
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SharedSerial.DTREnable = profileProperties.RtsDtrEnabled;
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SharedSerial.RTSEnable = profileProperties.RtsDtrEnabled;
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SharedSerial.DataBits = profileProperties.DataBits;
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SharedSerial.StopBits = (SerialStopBits)Enum.Parse(typeof(SerialStopBits), profileProperties.StopBits);
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SharedSerial.Parity = (SerialParity)Enum.Parse(typeof(SerialParity), profileProperties.Parity);
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SharedSerial.Speed = (SerialSpeed)profileProperties.Speed;
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SharedSerial.Handshake = (SerialHandshake)Enum.Parse(typeof(SerialHandshake), profileProperties.Handshake);
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SharedSerial.Connected = true;
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try
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{
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ProductName = SendString("GVP");
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FirmwareVersion = SendString("GVN");
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}
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catch (Exception ex)
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{
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traceLogger.LogIssue("Connect", $"Error getting telescope information \"{ex.Message}\" setting to LX200 Classic mode.");
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ProductName = TelescopeList.LX200CLASSIC;
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FirmwareVersion = "Unknown";
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}
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if (ProductName == ":GVP")
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{
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traceLogger.LogIssue("Connect", "Serial port is looping back data, something is wrong with the hardware.");
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//This means that the serial port is looping back what's been sent, something is very wrong.
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SharedSerial.Connected = false;
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throw new Exception("Serial port is looping back data, something is wrong with the hardware.");
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}
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try
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{
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string utcOffSet = SendString("GG");
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//:GG# Get UTC offset time
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//Returns: sHH# or sHH.H#
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//The number of decimal hours to add to local time to convert it to UTC. If the number is a whole number the
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//sHH# form is returned, otherwise the longer form is returned.
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if (!double.TryParse(utcOffSet, out var utcOffsetHours))
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{
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var message = "Unable to decode response from the telescope, This is likely a hardware serial communications error.";
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traceLogger.LogIssue("Connect", message);
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throw new Exception(message);
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}
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traceLogger.LogMessage("Connect", $"Offset from UTC: {utcOffsetHours}", false);
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}
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catch (Exception)
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{
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SharedSerial.Connected = false;
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throw;
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}
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}
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}
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else
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throw new ArgumentException($"deviceId {deviceId} not currently supported");
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ConnectedDevices[deviceId].Count++; // increment the value
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ConnectedDeviceIds[driverId].Count++; // increment the value
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return new ConnectionInfo
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{
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//Connections = ConnectedDevices[deviceId].Count,
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SameDevice = ConnectedDeviceIds[driverId].Count
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};
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}
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}
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public static void Disconnect(string deviceId, string driverId)
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{
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lock (LockObject)
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{
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if (ConnectedDevices.ContainsKey(deviceId))
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{
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ConnectedDevices[deviceId].Count--;
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if (ConnectedDevices[deviceId].Count <= 0)
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{
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ConnectedDevices.Remove(deviceId);
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if (deviceId == "Serial")
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{
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SharedSerial.Connected = false;
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}
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}
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}
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if (ConnectedDeviceIds.ContainsKey(driverId))
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{
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ConnectedDeviceIds[driverId].Count--;
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}
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}
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}
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private static bool IsConnected()
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{
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foreach (var device in ConnectedDevices)
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{
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if (device.Value.Count > 0)
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return true;
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}
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return false;
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}
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#endregion
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public static void Lock(Action action)
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{
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lock (LockObject)
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{
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action();
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}
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}
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public static T Lock<T>(Func<T> func)
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{
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lock (LockObject)
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{
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return func();
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}
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}
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/// <summary>
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/// Skeleton of a hardware class, all this does is hold a count of the connections,
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/// in reality extra code will be needed to handle the hardware in some way
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/// </summary>
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private class DeviceHardware
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{
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internal int Count { set; get; }
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internal DeviceHardware()
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{
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Count = 0;
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}
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}
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public static void SetParked(bool atPark, ParkedPosition parkedPosition)
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{
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IsParked = atPark;
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ParkedPosition = parkedPosition;
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}
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private static readonly ThreadSafeValue<bool> _isParked = false;
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public static bool IsParked
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|
{
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get => _isParked;
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private set => _isParked.Set(value);
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}
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private static ParkedPosition _parkedPosition;
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public static ParkedPosition ParkedPosition
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|
{
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get => _parkedPosition;
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private set => Interlocked.Exchange(ref _parkedPosition, value);
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}
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private static readonly ThreadSafeValue<PierSide> _sideOfPier = PierSide.pierUnknown;
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|
/// <summary>
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/// Start with <see cref="PierSide.pierUnknown"/>.
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/// As we do not know the physical declination axis position, we have to keep track manually.
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/// </summary>
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|
public static PierSide SideOfPier
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|
{
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get => _sideOfPier;
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|
internal set => _sideOfPier.Set(value);
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|
}
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|
|
|
private static readonly ThreadSafeValue<double?> _targetRightAscension = null as double?;
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|
public static double? TargetRightAscension
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|
{
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|
get => _targetRightAscension;
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|
internal set => _targetRightAscension.Set(value);
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|
}
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|
private static readonly ThreadSafeValue<double?> _targetDeclination = null as double?;
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|
public static double? TargetDeclination
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|
{
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|
get => _targetDeclination;
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|
internal set => _targetDeclination.Set(value);
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|
}
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|
|
|
private static int _slewSettleTime;
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|
public static short SlewSettleTime
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|
{
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|
get => Convert.ToInt16(_slewSettleTime);
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|
internal set => Interlocked.Exchange(ref _slewSettleTime, value);
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|
}
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|
|
|
private static readonly ThreadSafeValue<bool> _isLongFormat = false;
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|
public static bool IsLongFormat
|
|
{
|
|
get => _isLongFormat;
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|
internal set => _isLongFormat.Set(value);
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|
}
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|
|
|
private static readonly ThreadSafeValue<bool> _movingPrimary = false;
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|
public static bool MovingPrimary
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|
{
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|
get => _movingPrimary;
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|
internal set => _movingPrimary.Set(value);
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|
}
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|
|
|
private static readonly ThreadSafeValue<bool> _movingSecondary = false;
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|
public static bool MovingSecondary
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|
{
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|
get => _movingSecondary;
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|
internal set => _movingSecondary.Set(value);
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|
}
|
|
|
|
private static readonly ThreadSafeValue<DateTime> _earliestNonSlewingTime = DateTime.MinValue;
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|
public static DateTime EarliestNonSlewingTime
|
|
{
|
|
get => _earliestNonSlewingTime;
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|
internal set => _earliestNonSlewingTime.Set(value);
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|
}
|
|
|
|
private static readonly ThreadSafeValue<bool> _isTargetCoordinateInitRequired = true;
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|
public static bool IsTargetCoordinateInitRequired
|
|
{
|
|
get => _isTargetCoordinateInitRequired;
|
|
internal set => _isTargetCoordinateInitRequired.Set(value);
|
|
}
|
|
|
|
private static readonly ThreadSafeValue<bool> _isGuiding = false;
|
|
public static bool IsGuiding
|
|
{
|
|
get => _isGuiding;
|
|
internal set => _isGuiding.Set(value);
|
|
}
|
|
}
|
|
} |