ESP8266 Community Forum

I need to build a WIFI serial data cable that can receive and transmit data at only at 1200bps to control existing equipment that currently uses a direct serial data (TTL only) cable. I want the ESP8266 to power up as an AP and be ready to receive 1200bps data immediately without requiring any AT commands. The ESP8266 also needs to receive RTS on/off commands from the remote terminal and set a GPIO output accordingly.

Any help on how to do this will be greatly appreciated.

have you looked at the ArduinoIDE for ESP8266? it has example for exactly what you want few lines of code and you are there

Are you referring to the example WIFITelnetToSerial?
I will have to try it.

Thanks!