I'm attempting to put an HC-05 module into command mode in order to change the PIN and default baud rate etc. According to the datasheet, PIO11 needs to be high to do this, so I connect it to 3.3v, remove power and power it back up.
Using an FT232 interface and a level converter, I send the AT command to it via Putty. I can observe the command on the RX pin of the HC-05 module but I don't see anything come back. I've tried various combinations of baud rates and flow control settings.
For the record, I can pair with the module and receive data sent to it in my Putty window via the FT232/level converter.