read no data

[Liangzx]

I use vspd create COM1 and COM2 on Win10, S -> like this: func main() { s, err := serial.Open(&serial.Config{ Address: "COM1", BaudRate: 9600, DataBits: 8, StopBits: 1, Parity: "N", }) if err != nil { log.Fatal(err) } // defer s.Close() buf := make([]byte, 128) log.Println("begin") n, err := s.Read(buf) if err != nil { log.Fatal(err) } log.Println("end") log.Println(string(buf[:n])) }

C-> like this: func main() { s, err := serial.Open(&serial.Config{ Address: "COM2", BaudRate: 9600, DataBits: 8, StopBits: 1, Parity: "N", }) if err != nil { log.Fatal(err) } // n, err := s.Write([]byte("123")) if err != nil { log.Fatal(err) } // log.Printf("write: %d\n", n) // defer s.Close() buf := make([]byte, 128) time.Sleep(1000 * time.Millisecond) n, err = s.Read(buf) if err != nil { log.Fatal(err) } log.Println(string(buf[:n])) }

first I run S then C I found S read nothing, I don't no why? can you help me?