feat(cmd/rgb-led): add subcommands to operate with rgb-leds

pkg/led/led.go

@@ -0,0 +1,71 @@
+package led
+
+import (
+	"fmt"
+
+	"github.com/go-flucky/flucky/pkg/types"
+	"github.com/stianeikeland/go-rpio"
+)
+
+type LED interface {
+	On() error
+	Off() error
+	Toggel() error
+}
+
+type RGBLED struct {
+	*types.LED
+}
+
+func (l *RGBLED) On() error {
+	if err := rpio.Open(); err != nil {
+		return fmt.Errorf("Can not open rpio: %v", err)
+	}
+	defer rpio.Close()
+
+	gpio, err := types.GPIOToInt(*l.GPIONumber)
+	if err != nil {
+		return fmt.Errorf("Can not determine %v into integer: %v", l.GPIONumber, err)
+	}
+
+	pin := rpio.Pin(gpio)
+	pin.High()
+
+	return nil
+}
+
+func (l *RGBLED) Off() error {
+
+	if err := rpio.Open(); err != nil {
+		return fmt.Errorf("Can not open rpio: %v", err)
+	}
+	defer rpio.Close()
+
+	gpio, err := types.GPIOToInt(*l.GPIONumber)
+	if err != nil {
+		return fmt.Errorf("Can not determine %v into integer: %v", l.GPIONumber, err)
+	}
+
+	pin := rpio.Pin(gpio)
+	pin.Low()
+
+	return nil
+}
+
+func (l *RGBLED) Toggel() error {
+
+	if err := rpio.Open(); err != nil {
+		return fmt.Errorf("Can not open rpio: %v", err)
+	}
+	defer rpio.Close()
+
+	gpio, err := types.GPIOToInt(*l.GPIONumber)
+	if err != nil {
+		return fmt.Errorf("Can not determine %v into integer: %v", l.GPIONumber, err)
+	}
+
+	pin := rpio.Pin(gpio)
+	pin.Toggle()
+
+	return nil
+}