From 62ffe8922e45dd0a33a8b4d8ebe3f52e744ad770 Mon Sep 17 00:00:00 2001
From: Tim Boden <IreNox@users.noreply.github.com>
Date: Thu, 26 Jan 2023 14:01:17 +0100
Subject: [PATCH] Implement support for Aqua Computer Farbwerk (#934)

---
 .../AquaComputer/AquaComputerGroup.cs         |   9 ++
 .../Controller/AquaComputer/Farbwerk.cs       | 115 ++++++++++++++++++
 2 files changed, 124 insertions(+)
 create mode 100644 LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/Farbwerk.cs

diff --git a/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/AquaComputerGroup.cs b/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/AquaComputerGroup.cs
index a542a4c..9a4e054 100644
--- a/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/AquaComputerGroup.cs
+++ b/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/AquaComputerGroup.cs
@@ -69,6 +69,15 @@ public class AquaComputerGroup : IGroup
                     _hardware.Add(octo);
                     break;
 
+                case 0xF00A:
+                    var farbwerk = new Farbwerk(dev, settings);
+                    _report.AppendLine($"Device name: {productName}");
+                    _report.AppendLine($"Firmware version: {farbwerk.FirmwareVersion}");
+                    _report.AppendLine($"{farbwerk.Status}");
+                    _report.AppendLine();
+                    _hardware.Add(farbwerk);
+                    break;
+
                 default:
                     _report.AppendLine($"Unknown Hardware PID: {dev.ProductID} Name: {productName}");
                     _report.AppendLine();
diff --git a/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/Farbwerk.cs b/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/Farbwerk.cs
new file mode 100644
index 0000000..3aaf087
--- /dev/null
+++ b/LibreHardwareMonitorLib/Hardware/Controller/AquaComputer/Farbwerk.cs
@@ -0,0 +1,115 @@
+// 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.
+// All Rights Reserved.
+
+using System;
+using HidSharp;
+
+namespace LibreHardwareMonitor.Hardware.Controller.AquaComputer;
+//TODO:
+//Implement set RGB Controls
+
+internal sealed class Farbwerk : Hardware
+{
+    private const int FEATURE_ID = 3;
+
+    private const int HEADER_SIZE = 27;
+    private const int SENSOR_OFFSET = 20;
+    private const int COLORS_OFFSET = 40;
+
+    private const int TEMPERATURE_COUNT = 4;
+    private const int COLOR_COUNT = 4;
+    private const int COLOR_VALUE_COUNT = COLOR_COUNT * 3;
+
+    private readonly byte[] _rawData = new byte[140];
+    private readonly HidStream _stream;
+    private readonly Sensor[] _temperatures = new Sensor[TEMPERATURE_COUNT];
+    private readonly Sensor[] _colors = new Sensor[COLOR_VALUE_COUNT];
+
+    public Farbwerk(HidDevice dev, ISettings settings) : base("Farbwerk", new Identifier(dev.DevicePath), settings)
+    {
+        if (dev.TryOpen(out _stream))
+        {
+            for (int i = 0; i < _temperatures.Length; i++)
+            {
+                _temperatures[i] = new Sensor($"Sensor {i + 1}", i, SensorType.Temperature, this, settings);
+                ActivateSensor(_temperatures[i]);
+            }
+
+            for (int i = 0; i < _colors.Length; i++)
+            {
+                int control = (i / 3) + 1;
+                string color = (i % 3) switch
+                {
+                    0 => "Red",
+                    1 => "Green",
+                    2 => "Blue",
+                    _ => "Invalid"
+                };
+                _colors[i] = new Sensor($"Controller {control} {color}", COLOR_COUNT + i, SensorType.Level, this, settings);
+                ActivateSensor(_colors[i]);
+            }
+
+            Update();
+        }
+    }
+
+    public ushort FirmwareVersion { get; private set; }
+
+    public override HardwareType HardwareType
+    {
+        get { return HardwareType.EmbeddedController; }
+    }
+
+    public string Status
+    {
+        get
+        {
+            if (_rawData[0] != 0x1)
+            {
+                return $"Status: Invalid header {_rawData[0]}";
+            }
+
+            if (FirmwareVersion < 1009)
+            {
+                return $"Status: Untested Firmware Version {FirmwareVersion}! Please consider Updating to Version 1009";
+            }
+
+            return "Status: OK";
+        }
+    }
+
+    public override void Close()
+    {
+        _stream.Close();
+
+        base.Close();
+    }
+
+    public override void Update()
+    {
+        int length = _stream.Read(_rawData);
+
+        if (length != _rawData.Length || _rawData[0] != 0x1)
+        {
+            return;
+        }
+
+        FirmwareVersion = Convert.ToUInt16(_rawData[21] << 8 | _rawData[22]);
+
+        int offset = HEADER_SIZE + SENSOR_OFFSET;
+        for (int i = 0; i < _temperatures.Length; i++)
+        {
+            _temperatures[i].Value = (_rawData[offset] << 8 | _rawData[offset + 1]) / 100.0f;
+            offset += 2;
+        }
+
+        offset = HEADER_SIZE + COLORS_OFFSET;
+        for (int i = 0; i < _colors.Length; i++)
+        {
+            _colors[i].Value = (_rawData[offset] << 8 | _rawData[offset + 1]) / 81.90f;
+            offset += 2;
+        }
+    }
+}