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AT Command Introduction

This specification presents guidelines for software engineers that use Feasycom’s dual-mode(Data+Audio) series of modules.

The AT Command described here supports the modules listed in the table below.

 

 

 

1.1 Terms

{ } :Content between {…} is optional

 

 

 

1.2 HW Interface

 

GPIO  
PWM  
UART  
I2C Master/Slave  
I2S Master/Slave  
Analog Input/Output  

 

 

 

1.3 Supported Bluetooth Profile

 

Profile Supported Role
SPP Serial Port Profile  
GATT Generic Attribute Profile Server, Client
HFP Hans-Free Profile Sink
A2DP Advanced Audio Distribution Profile Sink
AVRCP Audio/Video Distribution Profile Controller, Target
HID Human Interface Profile Keyboard
PBAP PBAP Server

 

 

 

1.4 Command Format

AT+ Command {=Param1{, Param2{, Param3…}}} <CR><LF> 

 

All commands start with “AT”, end with <CR><LF>
<CR> stands for “carriage return”, corresponding hex is 0x0D
<LF> stands for “line feed”, corresponding hex is 0x0A
If command has parameter, parameter keep behind “=”
If command has multiple parameters, parameter must be separated by “,”
If command has response, response start with <CR><LF>, end with <CR><LF>
Module will always report command’s execution result using “OK” for success or “ERROR” for failure

 

 

 

 

1.5 Indication Format

<CR><LF>+ Indication {=Param1{, Param2{, Param3…}}} <CR><LF>

 

All indications start with <CR><LF>, end with <CR><LF>
If indication has parameter, parameter keep behind “=”
If indication has multiple parameters, the parameter must be separated by “,”
Hex value <FF> will be used instead of “,” in some special indications

 

 

 

 

1.6 Default Settings

 

Items Default Settings
Pin Code 0000
Secure Simple Pairing Mode On
UART Baud rate 115200bps/8/N/1

 

 

 

 

 

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