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LibreHardwareMonitor-0.9.4/LibreHardwareMonitorLib/Hardware/Controller/TBalancer/TBalancerGroup.cs

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+// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// Copyright (C) LibreHardwareMonitor and Contributors.
+// Partial Copyright (C) Michael Möller <mmoeller@openhardwaremonitor.org> and Contributors.
+// All Rights Reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Threading;
+using LibreHardwareMonitor.Interop;
+
+// ReSharper disable InconsistentNaming
+
+namespace LibreHardwareMonitor.Hardware.Controller.TBalancer;
+
+internal class TBalancerGroup : IGroup
+{
+    private readonly List<TBalancer> _hardware = new();
+    private readonly StringBuilder _report = new();
+
+    public TBalancerGroup(ISettings settings)
+    {
+        uint numDevices;
+
+        try
+        {
+            if (!Ftd2xx.DllExists())
+            {
+                _report.AppendLine("Status: missing DLL");
+                return;
+            }
+
+            if (Ftd2xx.FT_CreateDeviceInfoList(out numDevices) != Ftd2xx.FT_STATUS.FT_OK)
+            {
+                _report.AppendLine("Status: FT_CreateDeviceInfoList failed");
+                return;
+            }
+        }
+        catch (Exception e) when (e is DllNotFoundException or ArgumentNullException or EntryPointNotFoundException or BadImageFormatException)
+        {
+            return;
+        }
+
+        Ftd2xx.FT_DEVICE_INFO_NODE[] info = new Ftd2xx.FT_DEVICE_INFO_NODE[numDevices];
+        if (Ftd2xx.FT_GetDeviceInfoList(info, ref numDevices) != Ftd2xx.FT_STATUS.FT_OK)
+        {
+            _report.AppendLine("Status: FT_GetDeviceInfoList failed");
+            return;
+        }
+
+        // make sure numDevices is not larger than the info array
+        if (numDevices > info.Length)
+            numDevices = (uint)info.Length;
+
+        for (int i = 0; i < numDevices; i++)
+        {
+            _report.Append("Device Index: ");
+            _report.AppendLine(i.ToString(CultureInfo.InvariantCulture));
+            _report.Append("Device Type: ");
+            _report.AppendLine(info[i].Type.ToString());
+
+            // the T-Balancer always uses an FT232BM
+            if (info[i].Type != Ftd2xx.FT_DEVICE.FT_DEVICE_232BM)
+            {
+                _report.AppendLine("Status: Wrong device type");
+                continue;
+            }
+
+            Ftd2xx.FT_STATUS status = Ftd2xx.FT_Open(i, out Ftd2xx.FT_HANDLE handle);
+            if (status != Ftd2xx.FT_STATUS.FT_OK)
+            {
+                _report.AppendLine("Open Status: " + status);
+                continue;
+            }
+
+            Ftd2xx.FT_SetBaudRate(handle, 19200);
+            Ftd2xx.FT_SetDataCharacteristics(handle, 8, 1, 0);
+            Ftd2xx.FT_SetFlowControl(handle, Ftd2xx.FT_FLOW_CONTROL.FT_FLOW_RTS_CTS, 0x11, 0x13);
+            Ftd2xx.FT_SetTimeouts(handle, 1000, 1000);
+            Ftd2xx.FT_Purge(handle, Ftd2xx.FT_PURGE.FT_PURGE_ALL);
+
+            status = Ftd2xx.Write(handle, new byte[] { 0x38 });
+            if (status != Ftd2xx.FT_STATUS.FT_OK)
+            {
+                _report.AppendLine("Write Status: " + status);
+                Ftd2xx.FT_Close(handle);
+                continue;
+            }
+
+            bool isValid = false;
+            byte protocolVersion = 0;
+
+            int j = 0;
+            while (Ftd2xx.BytesToRead(handle) == 0 && j < 2)
+            {
+                Thread.Sleep(100);
+                j++;
+            }
+
+            if (Ftd2xx.BytesToRead(handle) > 0)
+            {
+                if (Ftd2xx.ReadByte(handle) == TBalancer.StartFlag)
+                {
+                    while (Ftd2xx.BytesToRead(handle) < 284 && j < 5)
+                    {
+                        Thread.Sleep(100);
+                        j++;
+                    }
+
+                    int length = Ftd2xx.BytesToRead(handle);
+                    if (length >= 284)
+                    {
+                        byte[] data = new byte[285];
+                        data[0] = TBalancer.StartFlag;
+                        for (int k = 1; k < data.Length; k++)
+                            data[k] = Ftd2xx.ReadByte(handle);
+
+                        // check protocol version 2X (protocols seen: 2C, 2A, 28)
+                        isValid = (data[274] & 0xF0) == 0x20;
+                        protocolVersion = data[274];
+                        if (!isValid)
+                        {
+                            _report.Append("Status: Wrong Protocol Version: 0x");
+                            _report.AppendLine(protocolVersion.ToString("X", CultureInfo.InvariantCulture));
+                        }
+                    }
+                    else
+                    {
+                        _report.AppendLine("Status: Wrong Message Length: " + length);
+                    }
+                }
+                else
+                {
+                    _report.AppendLine("Status: Wrong Startflag");
+                }
+            }
+            else
+            {
+                _report.AppendLine("Status: No Response");
+            }
+
+            Ftd2xx.FT_Purge(handle, Ftd2xx.FT_PURGE.FT_PURGE_ALL);
+            Ftd2xx.FT_Close(handle);
+
+            if (isValid)
+            {
+                _report.AppendLine("Status: OK");
+                _hardware.Add(new TBalancer(i, protocolVersion, settings));
+            }
+
+            if (i < numDevices - 1)
+                _report.AppendLine();
+        }
+    }
+
+    public IReadOnlyList<IHardware> Hardware => _hardware;
+
+    public string GetReport()
+    {
+        if (_report.Length > 0)
+        {
+            StringBuilder r = new();
+            r.AppendLine("FTD2XX");
+            r.AppendLine();
+            r.Append(_report);
+            r.AppendLine();
+            return r.ToString();
+        }
+
+        return null;
+    }
+
+    public void Close()
+    {
+        foreach (TBalancer balancer in _hardware)
+            balancer.Close();
+    }
+}