Show fan speed according to max_power and off_below (#543)

fixes #444

ks_includes/printer.py

@@ -291,6 +291,22 @@ class Printer:
             return self.devices[dev][stat]
         return None
 
+    def get_fan_speed(self, fan="fan", speed=None):
+        if fan not in self.config:
+            logging.debug("Error getting %s config", fan)
+            return speed if speed is not None else 0
+        if speed is None and "speed" in self.data[fan]:
+            speed = self.data[fan]["speed"]
+        if 'max_power' in self.config[fan]:
+            max_power = float(self.config[fan]['max_power'])
+            if max_power > 0:
+                speed = speed / max_power
+        if 'off_below' in self.config[fan]:
+            off_below = float(self.config[fan]['off_below'])
+            if speed < off_below:
+                speed = 0
+        return speed
+
     def get_extruder_count(self):
         return self.extrudercount
 

panels/fan.py

@@ -46,7 +46,7 @@ class FanPanel(ScreenPanel):
 
         for fan in self.devices:
             if fan in data and "speed" in data[fan]:
-                self.update_fan_speed(fan, data[fan]["speed"])
+                self.update_fan_speed(fan, self._printer.get_fan_speed(fan, data[fan]["speed"]))
 
     def update_fan_speed(self, fan, speed):
         if fan not in self.devices:
@@ -74,10 +74,7 @@ class FanPanel(ScreenPanel):
         frame.set_property("shadow-type", Gtk.ShadowType.NONE)
         frame.get_style_context().add_class("frame-item")
 
-        try:
+        self.fan_speed[fan] = float(self._printer.get_fan_speed(fan))
-            self.fan_speed[fan] = float(self._printer.get_data()[fan]["speed"])
-        except Exception:
-            self.fan_speed[fan] = 0
 
         name = Gtk.Label()
         if fan == "fan":
@@ -155,3 +152,9 @@ class FanPanel(ScreenPanel):
         else:
             f = " ".join(fan.split(" ")[1:])
             self._screen._ws.klippy.gcode_script("SET_FAN_SPEED FAN=%s SPEED=%s" % (f, float(value)/100))
+        # Check the speed in case it wasn't applied
+        GLib.timeout_add_seconds(1, self.check_fan_speed, fan)
+
+    def check_fan_speed(self, fan):
+        self.update_fan_speed(fan, self._printer.get_fan_speed(fan))
+        return False

panels/job_status.py

@@ -404,7 +404,7 @@ class JobStatusPanel(ScreenPanel):
                 self.labels['speed'].set_text("%3d%%" % self.speed)
 
         if "fan" in data and "speed" in data['fan']:
-            self.fan = int(round(data['fan']['speed'], 2)*100)
+            self.fan = int(round(self._printer.get_fan_speed("fan", data['fan']['speed']), 2)*100)
             self.labels['fan'].set_text("%3d%%" % self.fan)
 
         self.state_check()