Make brightness changes fade over time.

project-lamp.ino

@@ -56,6 +56,23 @@ struct ColourCode
   }
 };
 
+enum State
+{
+  COLOUR_DISPLAYED,
+  SPLIT_DISPLAYED,
+  FADE_DISPLAYED,
+  FAN_DISPLAYED,
+  RUNNING_FAN_DISPLAYED,
+
+  STROBE_SELECT_SPEED,
+  
+  FADE_SELECT_COLOUR,
+  SPLIT_SELECT_COLOUR,
+  FAN_SELECT_COLOUR,
+};
+
+State state = State.COLOUR_DISPLAYED;
+
 const ColourCode colourCodes[] =
 {
   {0xE619FF00, 0xFB04EF00, COL_RED},
@@ -90,9 +107,16 @@ const int NUM_COLOURCODES = sizeof(colourCodes) / sizeof(ColourCode);
 CRGBW leds[NUM_LEDS];
 CRGB *ledsRGB = (CRGB *) &leds[0];
 
+CRGBW selectedColours[16];
+uint8_t selectedColourCount = 0;
+
 //IRrecv irrecv(IR_RECEIVE_PIN);/
 
+const int BRIGHTNESS_FADE_SPEED = 8;
+
 uint8_t brightness = 128;
+uint8_t brightnessTarget = 128;
+uint8_t brightnessFade = 0;
 uint32_t lastCode = 0;
 
 decode_results results;
@@ -185,24 +209,20 @@ void loop()
     {
       case CODE_BRIGHTER:
         brightness += 32;
-        FastLED.setBrightness(brightness);
+        brightnessTarget = brightness;
-        FastLED.show();
         Serial.println(F("Brighter"));
         break;
       case CODE_DIMMER:
         brightness -= 32;
-        FastLED.setBrightness(brightness);
+        brightnessTarget = brightness;
-        FastLED.show();
         Serial.println(F("Dimmer"));
         break;
       case CODE_OFF:
-        FastLED.setBrightness(0);
+        brightnessTarget = 0;
-        FastLED.show();
         Serial.println(F("Off"));
         break;
       case CODE_ON:
-        FastLED.setBrightness(brightness);
+        brightnessTarget = brightness;
-        FastLED.show();
         Serial.println(F("On"));
         break;
       default:
@@ -213,5 +233,15 @@ void loop()
     if (brightness <= 0)
       brightness = 255;
   }
+  if (brightnessFade != brightnessTarget)
+  {
+    if (brightnessFade < brightnessTarget)
+      brightnessFade += min(BRIGHTNESS_FADE_SPEED, brightnessTarget - brightnessFade);
+    else
+      brightnessFade -= min(BRIGHTNESS_FADE_SPEED, brightnessFade - brightnessTarget);
+    //brightnessFade = brightnessTarget;
+    FastLED.setBrightness(brightnessFade);
+    FastLED.show();
+  }
   delay(100);
 }