// +build ignore package main import ( "flag" "os" "os/signal" "time" "github.com/cfreeman/embd" "github.com/cfreeman/embd/motion/servo" _ "github.com/cfreeman/embd/host/all" ) func main() { flag.Parse() embd.InitGPIO() defer embd.CloseGPIO() pwm, err := embd.NewPWMPin("P9_14") if err != nil { panic(err) } defer pwm.Close() servo := servo.New(pwm) quit := make(chan os.Signal, 1) signal.Notify(quit, os.Interrupt, os.Kill) turnTimer := time.Tick(500 * time.Millisecond) left := true servo.SetAngle(90) defer func() { servo.SetAngle(90) }() for { select { case <-turnTimer: left = !left switch left { case true: servo.SetAngle(70) case false: servo.SetAngle(110) } case <-quit: return } } }