Add feature to YAMDCC service to copy fan curve from EC to loaded config

YAMDCC.IPC/ServiceCommand.cs

@@ -120,6 +120,22 @@ public enum Command
         /// maximum brightness value (minus offset).
         /// </remarks>
         SetKeyLightBright,
+        /// <summary>
+        /// Attempts to write the default fan curves
+        /// of each fan from the EC to the config.
+        /// </summary>
+        /// <remarks>
+        /// <para>This command expects no arguments.</para>
+        /// <para>
+        /// If the loaded config is a template config, it
+        /// will be made into a full (non-template) config.
+        /// </para>
+        /// <para>
+        /// If there is no config loaded, this command will issue a
+        /// <see cref="Response.Error"/> to the requesting client.
+        /// </para>
+        /// </remarks>
+        FanCurveECToConf,
     }
 
     /// <summary>

YAMDCC.Service/FanControlService.cs

@@ -231,6 +231,9 @@ private void IPCClientMessage(object sender, PipeMessageEventArgs<ServiceCommand
                 case Command.SetKeyLightBright:
                     error = SetKeyLightBright(e.Connection.ID, e.Message.Arguments);
                     break;
+                case Command.FanCurveECToConf:
+                    error = FanCurveECToConf(e.Connection.ID);
+                    break;
                 default:    // Unknown command
                     Log.Error(Strings.GetString("errBadCmd"), e.Message);
                     break;
@@ -755,5 +758,69 @@ private int SetKeyLightBright(int clientId, string args)
             }
             return 2;
         }
+
+        private int FanCurveECToConf(int clientId)
+        {
+            if (!ConfigLoaded)
+            {
+                return 0;
+            }
+
+            Log.Debug("Getting fan curve from EC...");
+            if (EC.AcquireLock(500))
+            {
+                for (int i = 0; i < Config.FanConfs.Length; i++)
+                {
+                    FanConf cfg = Config.FanConfs[i];
+
+                    if (cfg.FanCurveConfs is null || cfg.FanCurveConfs.Length == 0)
+                    {
+                        cfg.FanCurveConfs = new FanCurveConf[1];
+                        cfg.FanCurveConfs[0] = new()
+                        {
+                            Name = "Default",
+                            Desc = "Default fan curve (auto-generated by YAMDCC)",
+                            TempThresholds = new TempThreshold[cfg.FanCurveRegs.Length],
+                        };
+                    }
+
+                    for (int j = 0; j < cfg.FanCurveRegs.Length; j++)
+                    {
+                        FanCurveConf curveCfg = cfg.FanCurveConfs[0];
+                        if (curveCfg.TempThresholds[j] is null)
+                        {
+                            curveCfg.TempThresholds[j] = new();
+                        }
+
+                        if (_EC.ReadByte(cfg.FanCurveRegs[j], out byte value))
+                        {
+                            curveCfg.TempThresholds[j].FanSpeed = value;
+                        }
+
+                        if (j == 0)
+                        {
+                            curveCfg.TempThresholds[j].UpThreshold = 0;
+                            curveCfg.TempThresholds[j].DownThreshold = 0;
+                        }
+                        else
+                        {
+                            if (_EC.ReadByte(cfg.UpThresholdRegs[j], out value))
+                            {
+                                curveCfg.TempThresholds[j].UpThreshold = value;
+                            }
+                            if (_EC.ReadByte(cfg.DownThresholdRegs[j], out value))
+                            {
+                                curveCfg.TempThresholds[j].DownThreshold = value;
+                            }
+                        }
+                    }
+                }
+            }
+
+            Log.Debug("Saving config...");
+            Config.Save(Path.Combine(DataPath, "CurrentConfig.xml"));
+
+            return 0;
+        }
     }
 }