Right. So to put it simply I need to be able to send and receive data at the same time via Bluetooth. I have a old 1999 device that used serial data to transfer data. It uses vcc, gnd, Rx and TX. When connected the device send info to 1 and 2 receives, and sends one back depending on what it's received.
So I literally just need 2 Bluetooth module to connect, receive and send through Rx and TX. Ive managed to get 2 modules to connect automatically through having both in at+cmode= 1 ( I think. Whatever it was I set both to this mode and they established a connection once power up) great. But I wasn't receiving info or getting any back. I managed to get 1 working in the end and by having ones role set to a slave loop. (If I understand correctly the slave loop receives and sends data back). So I know I can get data sent to and from and it's read. Obviously these modules have all the info set up within them I just need them trancieved via Bluetooth. I think I'm missing something with the at commands.
My next dilemma is can I get my HC 05 to pair and bind to my android phone without Arduino. I just need the commands so the HC 05 is connected to my android (not via terminal app) I've binded my address to the HC 05 and got ok. I have role set to slave. Maybe it's the wrong UART to connect to my phone? And I'm trying to work out the baud rate + 2 extra parameters are of the old device I'm trying to make this work with are... I've found its 1200 baud rate bit with the other 2 parameters what am I looking for? Please dummy explain I'm new.