Initial commit

ws2812/ws2812.go

@@ -0,0 +1,31 @@
+package ws2812
+
+import (
+	"machine"
+)
+
+type WS2812 struct {
+	Pin machine.GPIO
+}
+
+func New(pin machine.GPIO) WS2812 {
+	return WS2812{pin}
+}
+
+// Write the raw bitstring out using the WS2812 protocol.
+func (p WS2812) Write(buf []byte) {
+	for _, c := range buf {
+		p.WriteByte(c)
+	}
+}
+
+// Write the given color slice out using the WS2812 protocol.
+// Colors are specified in RGB format, and are send out in the common GRB
+// format.
+func (p WS2812) WriteColors(buf []uint32) {
+	for _, color := range buf {
+		p.WriteByte(byte(color >> 8))  // green
+		p.WriteByte(byte(color >> 16)) // red
+		p.WriteByte(byte(color >> 0))  // blue
+	}
+}