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CCS/TM4C129ENCPDT: TM40129ENCPDT

Part Number: TM4C129ENCPDT


Tool/software: Code Composer Studio

I am using  EK - TM4C129EXL board.

I need to do data transfer through USB using the  'usb_dev_cserial.c'  example. When I upload the program into the microcontroller , it is completely blank.

Stellaris Virtual Serial Port is visible.

But USB virtual port is not visible when I connect the board. Is there any specific driver for that. Or Any other issue..? 

Thank you.