Initialer Commit

src/main.cpp

@@ -0,0 +1,54 @@
+#include <Arduino.h>
+#include <SmartLeds.h>
+ 
+#define PIN 13
+#define NUM_PIXELS 24
+#define FACTOR 1 /* Abstand zwischen den Hue-Werten der Pixel */
+#define UPPER_HUE 147
+#define LOWER_HUE 70
+ 
+// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
+// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
+SmartLed leds( LED_WS2812B, NUM_PIXELS, PIN, 0, DoubleBuffer );
+ 
+uint8_t hue = 70;
+bool direction; /* true: up, false: down */
+
+void showGradient() {
+    if (hue>=UPPER_HUE && direction)
+    {
+        direction = false;
+    } else {
+        if (hue<=LOWER_HUE && !direction)
+        {
+            direction = true;
+        }
+        
+    } 
+    if (direction)
+    {
+        hue++;
+    } else {
+        hue--;
+    }
+    
+    // Use HSV to create nice gradient
+    for ( int i = 0; i <= NUM_PIXELS; i++ )
+        /*Der Modulo 255 ist trotz des Casts Absicht, da H=255 -> Pixel aus. */
+        leds[ i ] = Hsv{ static_cast< uint8_t >(( (hue + FACTOR * i) )%255), 255, 255 }; 
+    leds.show();
+    // Show is asynchronous; if we need to wait for the end of transmission,
+    // we can use leds.wait(); however we use double buffered mode, so we
+    // can start drawing right after showing.
+}
+
+void setup()
+{
+}
+ 
+void loop()
+{
+    showGradient();
+    delay( 500 );
+}
+