规范串口通讯

demo/relay/main.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"os/signal"
 	"syscall"
+	"time"
 )
 
 func main() {
@@ -19,8 +20,17 @@ func main() {
 	}
 	defer r.Close()
 
-	r.On(0)
-	defer r.Off(0)
+	for i := 0; i < 4; i++ {
+		func(num int) {
+			r.On(num)
+			defer r.Off(num)
+			time.Sleep(1 * time.Second)
+		}(i)
+		time.Sleep(1 * time.Second)
+	}
+
+	r.OnAll()
+	defer r.OffAll()
 
 	sig := make(chan os.Signal, 1)
 	signal.Notify(sig, os.Interrupt, syscall.SIGTERM)