Testing Communications
Send: AT (return OK, one second left and right once)
Returns: OK
Bluetooth serial communication baud rate change
Send: AT + BAUDI
Returns: OK1200
Send: AT + BAUD2
Returns: OK2400
BAUD1 ——— 1200
BAUD2 ——— 2400
BAUD 3 ——— 4800
BAUD 4 ——— 9600
BAUD 5 ——— 19200
BAUD 6 ——— 38400
BAUD 7 ——— 57600
BAUD 8 ——— 115200
BAUD 9 ——— 230400
BAUD A ——— 460800
BAUD B ——— 921600
BAUD C ——— 1382400
Interference causes system instability is not recommended for use in more than 115,200 baud. rateAfter setting more than 115,200 computer unusable , use in microcontroller programming using this baud rate higher than 115200 in order to
Re-issue the AT command set low baud
After the baud rate with AT command set , don’t need re- setting the baud rate the next time .
It will saved after power off automatically.
3 Bluetooth name change
Send : AT + NAMEname
Returns : OKsetname
Parameter name: The name of the current to be set , the Bluetooth name is searched . Within 20 characters .
For example: sending AT + NAMEdagu
Return OKsetname
At this time the name of the Bluetooth bill_gates
Parameters can be powered down to save , simply modify one . PDA client refresh services can be seen after the change of the name of the Bluetooth
4 Bluetooth pairing password change
Send : AT + PINxxxx
Returns : OKsetpin
Parameter xxxx: pairing password to be set ,4 bytes.
this command can be used slave or master . Machine is a phone adapter or pop-up window when asked to enter a passcode from the manual input of this parameter can be connected from the machine . Primary Bluetooth module search from the machine, if the password is correct , it is automatically paired , in addition to the main module from the module can be connected to the outer pair other products from the module contains the pair can be connected , for example, a digital camera containing Bluetooth , Bluetooth GPS, Bluetooth serial printers , and the like.
For example: sending AT + PIN8888
Return OKsetpin
Then the Bluetooth passkey is 8888 . Parameters can be powered down to save , simply modify once.