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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

 

 

 

 

 

 

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