mbed default UART

Hi guys,

I’m wondering if you guys can help me out with the default UART device for the mbed_lpc1768 board, to see printf and puts outputs in a serial client like putty.

I tried all pins (9/10/13/14/27/28) with several baudrates withouht success. Is there any other action I need to do before this works?

Thanks in advance, Tiago C