344 lines
12 KiB
C#
344 lines
12 KiB
C#
// **********************************************************************************************************
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// CommDeviceSerialAsync.cs
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// 4/3/2024
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// NGI - Next Generation Interceptor
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//
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// Contract No. HQ0856-21-C-0003/1022000209
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//
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// THIS DOCUMENT DOES NOT CONTAIN TECHNOLOGY OR TECHNICAL DATA CONTROLLED UNDER EITHER THE U.S.
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// INTERNATIONAL TRAFFIC IN ARMS REGULATIONS OR THE U.S. EXPORT ADMINISTRATION REGULATIONS.
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//
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// RAYTHEON PROPRIETARY: THIS DOCUMENT CONTAINS DATA OR INFORMATION PROPRIETARY TO RAYTHEON
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// COMPANY AND IS RESTRICTED TO USE ONLY BY PERSONS AUTHORIZED BY RAYTHEON COMPANY IN WRITING TO USE IT.
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// DISCLOSURE TO UNAUTHORIZED PERSONS WOULD LIKELY CAUSE SUBSTANTIAL COMPETITIVE HARM TO RAYTHEON
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// COMPANY'S BUSINESS POSITION. NEITHER SAID DOCUMENT NOR ITS CONTENTS SHALL BE FURNISHED OR DISCLOSED
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// TO OR COPIED OR USED BY PERSONS OUTSIDE RAYTHEON COMPANY WITHOUT THE EXPRESS WRITTEN APPROVAL OF
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// RAYTHEON COMPANY.
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//
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// UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.
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//
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// DESTRUCTION NOTICE: FOR CLASSIFIED DOCUMENTS FOLLOW THE PROCEDURES IN DOD 5220.22-M,
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// NATIONAL INDUSTRIAL SECURITY PROGRAM OPERATING MANUAL, FEBRUARY 2006,
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// INCORPORATING CHANGE 1, MARCH 28, 2013, CHAPTER 5, SECTION 7, OR DODM 5200.01-VOLUME 3,
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// DOD INFORMATION SECURITY PROGRAM: PROTECTION OF CLASSIFIED INFORMATION, ENCLOSURE 3,
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// SECTION 17. FOR CONTROLLED UNCLASSIFIED INFORMATION FOLLOW THE PROCEDURES IN DODM 5200.01-VOLUME 4,
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// INFORMATION SECURITY PROGRAM: CONTROLLED UNCLASSIFIED INFORMATION.
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//
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// CONTROLLED BY: MISSILE DEFENSE AGENCY
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// CONTROLLED BY: GROUND-BASED MIDCOURSE DEFENSE PROGRAM OFFICE
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// CUI CATEGORY: CTI
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// DISTRIBUTION/DISSEMINATION CONTROL: F
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// POC: Alex Kravchenko (1118268)
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// **********************************************************************************************************
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using System;
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using System.IO.Ports;
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using System.Threading;
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using System.Threading.Tasks;
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using NLog;
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using Raytheon.Common;
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namespace Raytheon.Instruments
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{
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/// <summary>
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/// A sim communication device
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/// </summary>
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public class CommDeviceSerialAsync : ICommAsync
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{
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#region PrivateClassMembers
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private uint _defaultReadTimeout;
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private uint _defaultSendTimeout;
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private uint _defaultReadBufferSize;
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private object _syncObj = new object();
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private SerialPort _serialPort;
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private string _comPortName;
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private int _baudRate;
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private Parity _parity;
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private int _dataBits;
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private StopBits _stopBits;
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private readonly string _name;
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private State _state;
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private readonly ILogger _logger;
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private readonly IConfigurationManager _configurationManager;
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private readonly IConfiguration _configuration;
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#endregion
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public bool ClearErrors() => false;
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public bool FrontPanelEnabled { get => false; set => throw new NotImplementedException(); }
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public bool DisplayEnabled { get => false; set => throw new NotImplementedException(); }
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public string DetailedStatus => $"This is a TCP/IP Device called {_name}";
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public InstrumentMetadata Info => throw new NotImplementedException();
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public State Status => _state;
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public string Name => _name;
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public SelfTestResult PerformSelfTest() => SelfTestResult;
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public SelfTestResult SelfTestResult => SelfTestResult.Unknown;
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public void Close() => Shutdown();
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public void Reset()
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{
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Close();
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Open();
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}
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#region Public Functions
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/// <summary>
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/// CommDevice factory constructor
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/// </summary>
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/// <param name="deviceName"></param>
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/// <param name="configurationManager"></param>
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public CommDeviceSerialAsync(string deviceName, IConfigurationManager configurationManager)
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{
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_name = deviceName;
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_configurationManager = configurationManager;
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_configuration = _configurationManager.GetConfiguration(deviceName);
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_logger = LogManager.GetLogger($"{this.GetType().Name} - {deviceName}");
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_comPortName = _configuration.GetConfigurationValue(_name, "COMPortName");
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int.TryParse(_configuration.GetConfigurationValue(_name, "BaudRate"), out _baudRate);
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Enum.TryParse(_configuration.GetConfigurationValue(_name, "Parity"), true, out _parity);
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int.TryParse(_configuration.GetConfigurationValue(_name, "DataBits"), out _dataBits);
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Enum.TryParse(_configuration.GetConfigurationValue(_name, "StopBits"), true, out _stopBits);
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uint.TryParse(_configuration.GetConfigurationValue(_name, "ReadTimeout"), out _defaultReadTimeout);
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uint.TryParse(_configuration.GetConfigurationValue(_name, "SendTimeout"), out _defaultSendTimeout);
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uint.TryParse(_configuration.GetConfigurationValue(_name, "BufferSize"), out _defaultReadBufferSize);
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_state = State.Uninitialized;
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}
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/// <summary>
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/// Destructor
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/// </summary>
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~CommDeviceSerialAsync()
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{
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Shutdown();
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}
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/// <summary>
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/// initialize instrument
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/// </summary>
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public void Initialize()
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{
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Open();
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}
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/// <summary>
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/// Opens COM serial port for communications
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/// </summary>
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public void Open()
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{
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if (_state == State.Uninitialized)
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{
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_serialPort = new SerialPort(_comPortName, _baudRate, _parity, _dataBits, _stopBits);
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_serialPort.Open();
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_state = State.Ready;
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}
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}
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/// <summary>
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/// shuts down the device
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/// </summary>
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public void Shutdown()
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{
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if (_serialPort != null)
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_serialPort.Close();
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_state = State.Uninitialized;
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}
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/// <summary>
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/// Read data from the device asynchronously.
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/// </summary>
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/// <param name="dataRead">The buffer to put the data in</param>
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/// <returns>The number of bytes read</returns>
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public async Task<uint> ReadAsync(byte[] dataRead, CancellationToken token = default)
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{
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var bytesRead = await _serialPort.BaseStream.ReadAsync(dataRead, 0, dataRead.Length, token);
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return (uint)bytesRead;
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}
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/// <summary>
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/// Read string from the device asynchronously.
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/// </summary>
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/// <param name="dataRead">The buffer to put the data in</param>
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/// <returns>The number of bytes read</returns>
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public async Task<string> ReadAsync(CancellationToken token = default)
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{
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var data = await ReadLineAsync(token);
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return data;
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}
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/// <summary>
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/// Sets the read timeout
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/// </summary>
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/// <param name="timeoutMs"></param>
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public void SetReadTimeout(uint timeoutMs)
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{
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if (_serialPort == null)
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return;
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_serialPort.ReadTimeout = (int)timeoutMs;
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}
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/// <summary>
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/// Write data to the device asynchronously
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/// </summary>
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/// <param name="dataToSend"></param>
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/// <param name="numBytesToWrite"></param>
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/// <returns></returns>
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public async Task<uint> WriteAsync(byte[] dataToSend, uint numBytesToWrite, CancellationToken token = default)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return 0;
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await _serialPort.BaseStream.WriteAsync(dataToSend, 0, (int)numBytesToWrite, token);
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return numBytesToWrite;
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}
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/// <summary>
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/// Write string data to the device asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <returns></returns>
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public async Task WriteAsync(string message, CancellationToken token = default)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return;
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await WriteLineAsync(message, token);
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}
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/// <summary>
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/// Send Command and Get Response asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <param name="timeoutInMs"></param>
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/// <returns></returns>
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public async Task<string> SendCommandGetResponseAsync(string message, CancellationToken cancellationToken = default, int timeoutInMs = 5000)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return null;
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using (var cts = new CancellationTokenSource(TimeSpan.FromMilliseconds(timeoutInMs)))
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{
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if (cancellationToken == default)
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{
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cancellationToken = cts.Token;
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}
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await WriteAsync(message, cancellationToken);
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string readResponse = await ReadAsync(cancellationToken);
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return readResponse;
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}
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}
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/// <summary>
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/// Send Command and Get Response asynchronously
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/// </summary>
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/// <param name="message"></param>
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/// <param name="timeoutInMs"></param>
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/// <returns></returns>
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public async Task<byte[]> SendCommandGetResponseAsync(byte[] data, CancellationToken token = default, int timeoutInMs = 5000)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return null;
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await WriteAsync(data, (uint)data.Length, token);
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_serialPort.ReadTimeout = timeoutInMs;
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var response = new byte[data.Length];
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await ReadAsync(response, token);
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return response;
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}
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/// <summary>
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/// keeps reading until canceled via token,
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/// received messages sent to dataReceived function
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <param name="dataReceived"></param>
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/// <returns></returns>
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public async Task KeepReadingAsync(CancellationToken cancellationToken, Action<string> dataReceived)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return;
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while (!cancellationToken.IsCancellationRequested)
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{
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var data = await ReadAsync(cancellationToken);
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dataReceived?.Invoke(data);
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}
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}
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/// <summary>
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/// keeps reading until canceled via token,
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/// received messages sent to dataReceived function
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <param name="dataReceived"></param>
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/// <returns></returns>
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public async Task KeepReadingAsync(CancellationToken cancellationToken, Action<byte[]> dataReceived)
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{
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if (_serialPort == null || !_serialPort.IsOpen)
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return;
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while (!cancellationToken.IsCancellationRequested)
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{
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var data = new byte[_defaultReadBufferSize]; // Adjust buffer size as needed
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var bytesRead = await ReadAsync(data, cancellationToken);
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Array.Resize(ref data, (int)bytesRead);
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dataReceived?.Invoke(data);
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}
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}
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#endregion
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#region private functions
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/// <summary>
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/// reads line async
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/// </summary>
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/// <param name="cancellationToken"></param>
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/// <returns></returns>
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private async Task<string> ReadLineAsync(CancellationToken cancellationToken = default)
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{
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try
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{
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cancellationToken.ThrowIfCancellationRequested();
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var line = await Task.Run(() => _serialPort.ReadLine(), cancellationToken);
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return line;
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}
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catch (OperationCanceledException ex)
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{
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_logger.Error(ex, ex.Message);
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return null;
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}
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}
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/// <summary>
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/// writes line async
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/// </summary>
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/// <param name="message"></param>
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/// <param name="cancellationToken"></param>
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/// <returns></returns>
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private async Task WriteLineAsync(string message, CancellationToken cancellationToken = default)
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{
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try
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{
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cancellationToken.ThrowIfCancellationRequested();
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await Task.Run(() => _serialPort.WriteLine(message), cancellationToken);
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}
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catch (OperationCanceledException ex)
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{
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_logger.Error(ex, ex.Message);
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}
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}
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#endregion
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}
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}
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