Reading serial ERROR_OPERATION_ABORTED (995)

[hww]

Reading bytes from the serial unexpected terminated with the error

error(syscall.Errno) golang.org/x/sys/windows.ERROR_OPERATION_ABORTED (995)

Sample code

The sample code below

serialMode := &serial.Config{Name: "COM4", Baud: baudRate, Size: 8, Parity: serial.ParityNone, StopBits: 1}
port, err := serial.OpenPort(serialMode)
for { 
	reader := bufio.NewReader(port)
	reply, err := reader.ReadBytes('\x0a')
	if err != nil {
		panic(err)
	}
	fmt.Println(reply)
}

Other info

Platform: Windows 10
Golang: go version go1.21.3 windows/amd64
Serial interface: USB to Serial

[hww]

Another interesting behavior happens when the Reader replaced by Scanner (example before)
Lets assume to call the next code in the infinitive loop, and the serial port gets infinitive stream of bytes. Then the line 8 will never be executed because the scanner returns empty lines. But if break the app in the line 1 or 2 and then continue execution, then the line 8 will print a valid data as minimum once.

Looks like "calling the reader with hi rate does not allow to get a valid data", the problem of concurrency or latency of the driver... Very strange, but it refers me to then next post https://stackoverflow.com/questions/21305392/io-operation-aborted-error-thrown-while-reading-serial-port

1	scanner := bufio.NewScanner(port)
2	scanner.Scan()
3	text := scanner.Text()
4
5	fmt.Println(text)
6	n := len(text)
7	if n > 0 {
8		fmt.Println(n)
9	}