add http router

pkg/led/led.go

@@ -35,6 +35,16 @@ func Get() *LEDSvc {
 	return led
 }
 
+func (p *LEDSvc) Stop() {
+	for k := range p.blink {
+		p.StopBlink(k)
+	}
+
+	ws2812b.ClearAll()
+
+	close(p.done)
+}
+
 func (p *LEDSvc) SetColor(pos int, color uint32) error {
 	if pos < 0 || pos > p.count {
 		return errors.New("out of range")