matlab serial communication

[vijayparmar]

if i want to try to open port in matlab i cant open the port...
'the error is ----


Error using ==> serial.fopen at 71
Port: COM2 is not available. No ports are available.
Use INSTRFIND to determine if other instrument objects are connected to the requested device.


my command is
s=serial('com2')
fopen(s)



output window



>> s=serial('com2')

Serial Port Object : Serial-COM2

Communication Settings
Port: COM2
BaudRate: 9600
Terminator: 'LF'

Communication State
Status: closed
RecordStatus: off

Read/Write State
TransferStatus: idle
BytesAvailable: 0
ValuesReceived: 0
ValuesSent: 0

>> fopen(s)
??? Error using ==> serial.fopen at 71
Port: COM2 is not available. No ports are available.
Use INSTRFIND to determine if other instrument objects are connected to the requested device.

 

[blooz]

h**p://www.mathworks.co.kr/matlabcentral/newsreader/view_thread/249818>>


INSTRHWINFO Return information on available hardware.

 instrhwinfo('serial')

ans = 

     AvailableSerialPorts: {'COM1'}
           JarFileVersion: 'Version 2.3'
    ObjectConstructorName: {'serial('COM1');'}
              SerialPorts: {'COM1'}