Serial Port not detected

Hi, I am using a usb dongle to communicate with my robocar. Hence, I write the the code as follow: code:

    device=instrfind;

but the answer I obtained is empty array. May I know what is the problem? By the way, I can communicate my robocar with hyper terminal. Thanks

[Shawn Chang]

The COM port is available at device manager which is COM6. But,Matlab unable to detect it even though i try to restart matlab and detect it again. Yet, there's still no solution. I'm doing this for my final year project and i need help urgently. Thanks

[Shawn Chang]

May I know is the Virtual USB Serial Ports can be detected in matlab? Since it is shown in list of port in device manager. Thanks

[Walter Roberson]

In theory they should show up, provided that they were turned on and connected at the time that MATLAB was started, and provided that the vendor-provided driver had previously been installed.

[Shawn Chang]

But, for my situation, matlab didn't detected my virtual usb serial port. Is there any solution, so that matlab can recognize the port?

[Walter Roberson]

Sorry, I do not know. I would suggest opening a case with Technical Support.

[Shawn Chang]

Anyhow, thanks for your replied and information. I will try to check is there any solution for this.

[Shawn Chang]

http://www.mathworks.com/matlabcentral/answers/1099-does-serial-detect-a-virtual-com-port

By referring to this thread, i obtained the following result:

s=instrhwinfo('Serial')

s =

AvailableSerialPorts: {2x1 cell}

JarFileVersion: 'Version 2.9.0'

ObjectConstructorName: {2x1 cell}

SerialPorts: {2x1 cell}

s.AvailableSerialPorts

ans =

'COM5'

'COM6'

This should be the solution for my problem.