Windows ReadTimeout no effect

[MiyamuraMiyako]

when serial readbuffer haven't any data. Read return immediately, not wait setting's timeout.

[xiegeo]

This shouldn't be, do you have sample code to reproduce?

[MiyamuraMiyako]

Just simple code. @xiegeo

sc := &serial.Config{Name: "COM3", Baud: 9600, Size: 8, Parity: serial.ParityNone, StopBits: serial.Stop1, ReadTimeout: time.Millisecond * 50}
sp, err := serial.OpenPort(sc)
if err != nil {
    fmt.Println(err.Error())
    return false
}
buf := make([]byte, 128)
sp.Read(buf)
return true

if serial device not send any data, Read will return immediately.

[xiegeo]

50 milliseconds is very short, so it's unlikely to catch anything before timing out.

Also, your read doesn't do anything, you should check for errors and the number returned to know if you have read any data.

As your code is written, the behavior is expected.

[MiyamuraMiyako]

@xiegeo sorry,My mistake.