[linux] Example - SerialPortError 22 then 2

[jwinarske]

Running example on Linux (Fedora 38) I am seeing:

SerialPortError: Invalid argument, errno = 22
See also: https://flutter.dev/docs/testings/errors

I get two drop down combo boxes that do list valid serial ports.

Hit refresh button, and I see:

SerialPortError: No such file or directory, errno = 2
See also: https://flutter.dev/docs/testing/errors

VM output:

Another exception was thrown: The Scrollbar's ScrollController has no
ScrollPosition attached.
Another exception was thrown: The Scrollbar's ScrollController has no
ScrollPosition attached.
Another exception was thrown: SerialPortError: No such file or directory, errno
= 2
Another exception was thrown: The Scrollbar's ScrollController has no
ScrollPosition attached.

Running C test code on the same machine listing ports works without error:

$ ./test
Found port: '/dev/ttyUSB3'
Found port: '/dev/ttyUSB1'
Found port: '/dev/ttyS0'
Found port: '/dev/ttyACM0'
Found port: '/dev/ttyUSB2'
Found port: '/dev/ttyUSB0'
Found port: '/dev/ttyACM1'

Opening port '/dev/ttyUSB2' 
Bytes waiting 1
�

[jwinarske]

It's having an issue with /dev/ttyS0

[rohit-arctano]

final port = SerialPort(address);
port.openReadWrite();
port.config = SerialPortConfig()
..baudRate = 115200
..bits = 8
..stopBits = 1
..parity = SerialPortParity.none
..setFlowControl(SerialPortFlowControl.none);
SerialPortReader reader =SerialPortReader(port, timeout: 10000);
reader.stream.listen((data) {
print(
'received data: ${String.fromCharCodes(data)}');
});
Reference link:(jpnurmi/flutter_libserialport#29 (comment))
This is working fine for me i have tested on raspberry pi and linux mint correctly without any error.I have also faced same error.