drivers: add generic interface types

interfaces.go

@@ -0,0 +1,14 @@
+package drivers
+
+import (
+	"image/color"
+)
+
+// LEDArray is an array of RGB LEDs. It may have any shape, but in general it is
+// a strip of daisy-chained LEDs.
+type LEDArray interface {
+	// WriteColors updates all LEDs in the LED strip to the given RGB color. It
+	// depends on the protocol what happens when you do not provide a
+	// correctly-sized slice of colors.
+	WriteColors(buf []color.RGBA) error
+}