how to access serial port data in matlab?

Hi everyone i have data coming from RFID reader in its software via serial port and i want the same data in matlab in real time . If i open that port in matlab i have to close that port in reader software and i got nothing in matlab. please help me out. thanx note: the source code of the software is available with me

Answer 1

[Suneesh]

1. Check if the device is transmitting. A loop back test is a good way to start with.
2. Sometimes a termination character is required. MATLAB might still be waiting for the terminating character to arrive.

[waleed raza]

Thanx for your reply what is a loop back test? what if there is no termination character?