So hello everybody!
I have couple of problems with my Bluetooth modules.
At first, I have Bluetooth module HC-05, and when I put it on 5V, LED blinks 1Hz, so it means it is in AT mode, with my program code, I can make it go master or slave with AT+ROLE0/1, some of AT doesn't work. But ok, the problem with this module is I can't pair it with my smartphone, i press to pair and it says device can't pair. I can't pair because LED is blinking 1Hz so it means it is in AT, I can't exit AT mode, can somebody give me advice how to exit it ?
Second problem, my HC-09, I can pair with him but when i go to Bluetooth serial I can't connect to it, I can't connect, but I can pair with it.
Somebody have some advice ? I really tried everything, enterint AT mods on different way, but I can't make my module to exit it, and to start LED blinking fast what means that I can pair with it. HELP ON! Thank you guys and girls!