Hi,friend!
I always use the fet debugger connect to the Msp430f5509 board and set the connection in the option menu as Texas instrument usb-IF .
I burn into the msp320 every time when I run the program.
The program runs good when the Fet and the msp all connect to my pc.
But After I disconnect the Fet and the msp430 ,and only connect the msp to the pc,the pc can't recognise my msp430,and show as a unknown device.