Unable to connect arduino

i am not able to connect arduino in matlab. I get error which says

Unable to create a communication link with the serial port. Please check the input argument PORT and verify that a device

is connected.

Eventhough com4 is working properly.

Answer 1

[Vidip]

If you are having trouble connecting to or communicating with your serial port device, follow the troubleshooting steps mentioned in below links-

• https://in.mathworks.com/help/matlab/import_export/troubleshooting-serial-port-interface.html
• https://in.mathworks.com/help/matlab/import_export/resolve-serial-port-connection-errors.html
• https://in.mathworks.com/help/matlab/supportpkg/arduino-connection-failure.html