HFP  AT Command ← Bluetooth Dual-mode Module for Data and Audio

 

 

HFP		Description	Module
B3201	AT+HFPSTAT	Read HFP State
B3202	AT+HFPCONN	Establish HFP Connection
B3203	AT+HFPDISC	Release HFP Connection
B3204	AT+HFPDIAL	Dial/Redial Phone Number
B3205	AT+HFPDTMF	Send DTMF code
B3206	AT+HFPANSW	Pick Up Incoming Call
B3207	AT+HFPCHUP	Reject/Hung up Call
B3208	AT+HFPADTS	Transfer Voice Audio
B3209	AT+MUTEMIC	Mute Mic
B3210	AT+HFPVR	Start/Stop Voice Recognition of Remote Device

 

 

 

B3201   AT+HFPSTAT     Read HFP State

Test the UART communication between HOST and Module after power-on.

E) AT+HFPSTAT

+HFPSTAT=Param

Param:(0~6) (0) Unsupported (1) Standby (2) Connecting (3) Connected (4) Outgoing call (5) Incoming call (6) Active call

 

 

 

B3202   AT+HFPCONN      Establish HFP Connection

The module will reconnect to last HFP device if parameter not exist

Q) AT+HFPCONN	OK
E) AT+HFPCONN{=Param}		Param: MAC address of target device (12 Bytes ASCII)

 

Example	AT+HFPCONN OK	Connect to last HFP device
Example	AT+HFPCONN=1C5CF226D773 OK	Connect to specific HFP device with MAC address

 

 

 

B3203   AT+HFPDISC     Release HFP Connection

Release current HFP connection with a remote device

E) AT+HFPDISC

 

 

 

B3204   AT+HFPDIAL     Dial/Redial Phone Number

Dial specific number if parameter existence, otherwise redial

E) AT+HFPDIAL{=Param}

+ADDR=Param OK

Param: Phone number (1~25 Bytes ASCII)

 

Example	AT+HFPDIAL OK	Redial
Example	AT+HFPDIAL=075527924639 OK	Dial number “075527924639”

 

 

 

B3205   AT+HFPDTMF     Send DTMF code

E) AT+HFPDTMF=Param

AT+HFPDTMF=# OK

DTMF code (0~9/#/*)

 

 

 

B3206   AT+HFPANSW     Pick Up Incoming Call

Pick up an incoming call.

Q) AT+HFPANSW

 

 

 

B3207   AT+HFPCHUP     Reject/Hung up Call

Reject incoming call or hung up outgoing/active call

E) AT+HFPCHUP

 

 

 

B3208   AT+HFPADTS     Transfer Voice Audio

Transfer voice audio between module and remote device by default if no parameter existence

E) AT+HFPADTS{=Param}

Param: Transfer direction (0/1) (0) Transfer voice audio from module to remote device (1) Transfer voice audio from remote device to module

 

 

 

B3209   AT+MUTEMIC     Mute Mic

mute mic when call active

E) AT+MUTEMIC{=Param}

Param: mute mic(0/1) (0) unmute (1) mute

 

 

 

B3210   AT+HFPVR     Start/Stop Voice Recognition of Remote Device

Start/Stop Voice Recognition of Remote Device (such as Siri for iOS devices)

E) AT+HFPVR=Param

On/off (0/1) (0) Stop (1) Start