Hello. My OG-4 ugprade to nixie clock is almost finished. Now I want to connect it to main chip to receive mode selection statements. I have only 1 pin available on main chip, so will single directional serial connection work with PBP in such config? I want only to be able to transmit the commands, without receiving anything back. The main chip is 16F887 and 2nd - 12F683. Will SERIN/SEROUT statements work?