Configure Serial1 as transmit only possible?

Is it possible to configure the Serial port thats normally on A6(TX) and A7 (RX) so that the A7 (RX) pin con be used for other stuff ?

I am using Serial1 for debug output when in battery powered mode, and would like if possible to put an DS18B20 one-wire temperature sensor on the only spare pin I have which is A7 (RX). I dont need access to Serial1 RX.

Just wondering if there is a way, via SERCOM perhaps, of putting the Serial1 RX on some un-used pin on the SAMD21 ?

Hi, I think the official data sheet for SAMD21 would be helpful