User's Manual

Description
If the device receives the Request and performs the command normally, respond
with “+OK” and display the address, device name, and role.
Usage (HOST→BT) : AT+INFO?
example
(BT→HOST) : +OK
(BT→HOST) : 74:F0:7D:B0:10:00, BoT ,SERVER[PERIPHERAL]

You can know obtain information about the address of the BT, the name of
BoT , and the Server Role from the Host device
5.1.1 AT+UART=xxxx
Operation If you change the communication speed with the BT from the HOST
Response +OK or +ERROR
Description If the BT receives the Request and performs the command normally, respond with
“+OK,” and reset it in 2 seconds; otherwise, respond with “+ERROR.”
Communication speeds that can be supported are 2400, 9600, 19200,
38400, 57600, 115200, 230400, etc.
Usage
example
(HOST→BT) : AT+UART=9600
(BT→HOST) : +OK
5.1.2 AT+ROLECHANGE
Operation When you want to change the current BT Role from the HOST
Response +OK or +ERROR
Description If the device receives the Request and performs the command normally, respond
with “+OK” and the current operation state, and change it to the Client mode and
the Server mode respectively when the current mode is the other, before
resetting. Otherwise, respond with "+ERROR."
Usage
example
(HOST→BT) : AT+ROLECHANGE
(BT→HOST) : +OK
 If the current operating state of the BT is the Server mode and the the Client
mode respectively, change it to the Client mode and the Server mode
correspondingly and reset after 2 seconds.