Invert Port at a NRF51822

[Bitschubse]

Hello,

I already searched the forum, but I didn't find anything.

Is there a way to invert a port on a NRF51822?

I use this chip together with an XMega-Chip and they communicate via uart. At the XMega, the TX-Pin is inverted, because it is also used to communicate via a led, but the led should not light up all the time. At the xmega I am able to invert a port signal, for in- and output. Is there a configuration option for the nrf? I didn't find anything.

Thanks for your help.

[Bitschubse]

The LED is connected to the UART TX line and I want it to light up only when transmitting. I tried to only switch on the TX line, when transmitting. That works, but is still too much light, even if I use 1MBaud. That's because I have to wait some time before and after sending, because I don't want to run into frame errors for the first and last byte. Is there no software configuration like on an atmel chip, which says, that this port pin is inverted?