Custom Bluetooth firmware
The newest generation of Bluetooth adapters use a custom Bluetooth firmware that has HC05 compatible commands but without the requirement of setting the mode pin for configuration. All commands have to be terminated by a <CR><LF>.The firmware supports the following commands:
- AT: Simply responds with AT
- AT+PSWD?: Read Bluetooth pin. The response is +PSWD:<pin>
- AT+PSWD=<pin>: Sets Bluetooth pin. The minimum pin length is 4 and the maximum length is 16.