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AT Command Introduction

This specification presents guidelines for software engineers that use Feasycom’s BT Dual-mode(data) series of modules.

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

 

 

 

1. Terms

{ } :Content between {…} is optional

 

 

2. HW Interface

GPIO, PWM, UART, SPI Master, I2C Master/Slave,  Analog Input/Output

 

 

3. Supported Bluetooth Profile

SPP, GATT Server, GATT Client, HID Keyboard

 

 

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

 

 

 

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

 

 

 

6. Default Settings

 

Pin Code 0000
Secure Simple Pairing Mode OFF
UART Baud rate 115200bps/8/N/1

 

 

 

 

 

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