New Controller Fan options and M710 gcode (#17149)

Marlin/src/feature/controllerfan.h

@@ -21,4 +21,56 @@
  */
 #pragma once
 
-void controllerfan_update();
+#include "../inc/MarlinConfigPre.h"
+
+typedef struct {
+  uint8_t   active_speed,    // 0-255 (fullspeed); Speed with enabled stepper motors
+            idle_speed;      // 0-255 (fullspeed); Speed after idle period with all motors are disabled
+  uint16_t  duration;        // Duration in seconds for the fan to run after all motors are disabled
+  bool      auto_mode;       // Default true
+} controllerFan_settings_t;
+
+#ifndef CONTROLLERFAN_SPEED_ACTIVE
+  #define CONTROLLERFAN_SPEED_ACTIVE 255
+#endif
+#ifndef CONTROLLERFAN_SPEED_IDLE
+  #define CONTROLLERFAN_SPEED_IDLE     0
+#endif
+#ifndef CONTROLLERFAN_IDLE_TIME
+  #define CONTROLLERFAN_IDLE_TIME     60
+#endif
+
+static constexpr controllerFan_settings_t controllerFan_defaults = {
+  CONTROLLERFAN_SPEED_ACTIVE,
+  CONTROLLERFAN_SPEED_IDLE,
+  CONTROLLERFAN_IDLE_TIME,
+  true
+};
+
+#if ENABLED(USE_CONTROLLER_FAN)
+
+class ControllerFan {
+  private:
+    static uint8_t speed;
+    static void set_fan_speed(const uint8_t s);
+
+  public:
+    #if ENABLED(CONTROLLER_FAN_EDITABLE)
+      static controllerFan_settings_t settings;
+    #else
+      static const controllerFan_settings_t &settings = controllerFan_defaults;
+    #endif
+    static inline bool state() { return speed > 0; }
+    static inline void init() { reset(); }
+    static inline void reset() {
+      #if ENABLED(CONTROLLER_FAN_EDITABLE)
+        settings = controllerFan_defaults;
+      #endif
+    }
+    static void setup();
+    static void update();
+};
+
+extern ControllerFan controllerFan;
+
+#endif