FSC-BT1058 Audio Transmit & Receive AT Command Set

Introduction

Release Note

序号	版本	日期	说明
1	V1.0.0	2024/05/23	1. Initial version
2	V1.0.1	2024/07/09	1. Added some LE Audio related commands and Events 2. Added some GATTS related commands and Events 3. Fix known issues
3	V1.0.2	2025/01/07	1. Fix known issues 2. Added some commands and events
4	V2.0.0	2026/01/08	1. Added audio source-sink integrated mode 2. Added some commands and events

Description

This design guide is suitable for engineers to develop FSC-BT1058 series bluetooth modules

Module Default Settings

BR/EDR Name	FSC-BT1058
BLE Name	FSC-BT1058-LE
UART configuration	115200/8/N/1

Hardware description

Pin diagram

FSC-BT1058 as an example:

Pin description

PIN	Name	Type	Descriptions
4	I2S_CLK	I/O	I2S BCLK
5	I2S_IN	I	I2S DATA IN
6	I2S_OUT	O	I2S DATA OUT
7	I2S_WS	I/O	I2S SYNC
8	RESET	I	Low-level reset
13	UART_TX	O	UART_TX
14	UART_RX	I	UART_RX
15	SPDIF_OUT	I/O	SPDIF audio output
16	UART_RTS	I/O	UART flow control pin (default PA)
17	LED0	I/O	Outputs square wave in pairing mode, Outputs high level when Bluetooth is connected
18	LED1	I/O	Outputs low level when BLE is disconnected, Outputs high level when connected
32	GND	GND	GND
33	VDD	VDD	3.3V power supply, LDO power supply is recommended
34	VREG_IN	I	Power on/off pin
36	VDD_IO	I	Pio supply
43	MIC_LP	Audio	MIC0/Line_IN differential L input, positive
44	MIC_LN	Audio	MIC0/Line_IN differential L input, negative
45	MIC_BIAS	Audio	MIC Power Supplies
46	SPK_RN	Audio	Headphone/speaker differential R output, negative
47	SPK_RP	Audio	Headphone/speaker differential R output, positive
48	SPK_LN	Audio	Headphone/speaker differential L output, negative
49	SPK_LP	Audio	Headphone/speaker differential L output, positive
51	EXT_ANT	ANT	Change the 0-ohm resistor near the antenna to connect an external Bluetooth antenna

Hardware design notes

The simple test of the module only needs to connect VDD/VDD_IO/VBUS/GND/UART_RX/UART_TX to use
After drawing, please send it to feasy.com for review so as not to have the best bluetooth distance

Functional Notes

Profiles & Features

SPP (Serial Port Profile)
GATTS (Generic Attribute Profile LE-Peripheral)
GATTC (Generic Attribute Profile LE-Central)
HFP-HF (Hands-Free Profile)
HFP-AG (Hands-Free-AG Profile)
A2DP-SINK (Advanced Audio Distribution Profile, Sink)
A2DP-SOURCE (Advanced Audio Distribution Profile, Source)
AVRCP-CONTROLLER (Audio/Video Remote Control Profile, Controller)
AVRCP-TARGET (Audio/Video Remote Control Profile, Target)
HID-DEVICE (Human Interface Profile)
PBAP (Phonebook Access Profile)
LE-AUDIO (Le Audio Profile)

GATT Service

Type	UUID	Characteristic	Description
Service	0xFFF0		Throughout Service
Write	0xFFF2	Write, Write Without Response	From APP to Module
Notify	0xFFF1	Notify	From Module to APP

Command Description

Terms

Applicable to the entire document.

{}: Content within {…} is optional.
<<: COMMAND sent from the Host to the Module.
>>: RESPONSE/EVENT replied from the Module to the Host.

Command Format

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

All commands start with AT+, end with <CR><LF>
<CR> means "carriage return", corresponds to hex value 0x0D
<LF> means "line feed", corresponds to hex value 0x0A
If command has param, param follows behind =
If command has multiple params, param must be separated by ,
If command has response, response starts with <CR><LF>, ends with <CR><LF>
Module will always report command's execution result by using OK for success or ERROR for failure

Example: Read module's BR/EDR name
<< AT+NAME
>> +NAME=FSC-BT1058
>> OK

Example: Pick up an incoming call when no call incoming actually
<< AT+HFPANSW
>> ERROR

Event Format

<CR><LF>+Event{=Param1{,Param2{,Param3...}}}<CR><LF>

All events start with <CR><LF>, end with <CR><LF>
If event has param, param follow behind =
If event has multiple params, param must be separated by ,

Example: Received "1234567890" from mobile phone via SPP profile

>> +SPPDATA=10,1234567890

Commands table

General Commands

AT+HELP - List firmware information and all support command

Command	AT+HELP
Response	<COMMAND SUMMARY:DESCRIPTION:PROFILE CATEGORY> ... ...

AT+VER - Get firmware version information

Command	AT+VER
Response	+VER=Param1,Param2,Param3
Description	+VER - Frmware version information

AT+BAUD - Get/Set uart baudrate

Command	AT+BAUD{=Param}
`Param`	9600/ 19200/ 38400/ 57600/ 115200/ 230400/ 460800 500000/ 921600/ 1000000/ 1382400/ 1500000/ 2000000
Response	+BAUD=Param
`Param`	Current baudrate
Description	It takes effect immediately and does not need to be restarted

AT+MODCFG - Set Device Source-Sink Mode

Command	AT+MODCFG{=Param}
`Param`	0-Sink mode for audio reception 1-Source mode for audio transmission
Description	+DEVMOD - Device Mode Information

AT+I2SCFG - Get/Set I2S Configuration

Command	AT+I2SCFG{=Param}
`Param`	A base-10 representation of a bit field, for each bit
`Bit[0]`	0: Disable 1: Enable
`Bit[1]`	0: Master mode 1: Slave mode
`Bit[2]`	0: 48000Hz sampling rate 1: 44100Hz sampling rate
`Bit[3]`	0: Data left-aligned 1: Data right-aligned
`Bit[4]`	0: Data delayed by 1 bit 1: No data delay
`Bit[6-5]`	00: 16-bit sampling depth 01: 24-bit sampling depth
Response	+I2SCFG=Param
`Param`	Current I2S configuration, formatted as above
Description	Takes effect after restart

AT+SPDIFCFG - SPDIF Format Configuration (Valid for audio sink)

Command	AT+SPDIFCFG{=Param}
`Param`	0-Disable audio output in SPDIF format 1-Enable audio output in SPDIF format
Description	If audio output is SPDIF, the I2S configuration will be invalid.

AT+SPKVOL - Set Speaker Volume (Valid for audio sink)

Command	AT+SPKVOL{=Param}
`Param`	Volume ('+' / '-'/ 0-15, default:15)
Description	Adjust output volume, Adjust A2DP volume during music playback, Adjust HFP volume during calls, And also support volume adjustment in LEA mode.

AT+MICGAIN - Get/Set input gain (Valid for audio source)

Command	AT+MICGAIN{=Param}
`Param`	0 ~ 10: Set target value +: Increase gain -: Decrease gain
Response	+MICGAIN=Param
`Param`	Current input gain
Description	In USB input mode, the param only be +/-, and get the param is invalid In I2S/SPDIF input mode, this command is invalid

AT+REBOOT - Soft reboot

Command	AT+REBOOT
Description	Module will disconnect all profiles then reboot

AT+RESTORE - Restore factory settings

Command	AT+RESTORE
Description	Module restore all factory settings then reboot

AT+BTEN - Get/Set bluetooth state

Command	AT+BTEN{=Param}
`Param`	0: Bluetooth off 1: Bluetooth on
Response	+BTEN=Param
`Param`	Current bluetooth state

AT+LECFG - Get/Set random BLE address state

Command	AT+LECFG{=Param}
`Param`	0: Disable 1: Enable
Response	+LECFG=Param
`Param`	Current state

AT+PROFILE - Get/Set Bluetooth profile

Command	AT+PROFILE{=Param}
`Param`	A base-10 representation of a bit field, for each bit:
`BIT[0]`	SPP (Serial Port Profile)
`BIT[1]`	GATT Server (Generic Attribute Profile)
`BIT[2]`	GATT Client (Generic Attribute Profile)
`BIT[3]`	HFP-HF (Hands-Free Profile Handsfree)
`BIT[4]`	HFP-AG (Hands-Free Profile Audio Gateway)
`BIT[5]`	A2DP Sink (Advanced Audio Distribution Profile)
`BIT[6]`	A2DP Source (Advanced Audio Distribution Profile)
`BIT[7]`	AVRCP Controller (Audio/Video remote controller Profile)
`BIT[8]`	AVRCP Target (Audio/Video remote controller Profile)
`BIT[9]`	HID-DEVICE (Human Interface Device Profile)
`BIT[10]`	PBAP (Phonebook Access Profile)
`BIT[11]`	MAP (Message Access Profile)
`BIT[12]`	LE AUDIO BIS-SINK (Low Energy Audio Broadcast Isochronous Stream Sink)
`BIT[13]`	LE AUDIO BIS-SOURCE (Low Energy Audio Broadcast Isochronous Stream Source)
`BIT[14]`	LE AUDIO CIS-SINK (Low Energy Audio Connected Isochronous Stream Sink)
`BIT[15]`	LE AUDIO CIS-SOURCE (Low Energy Audio Connected Isochronous Stream Source)
Response	+PROFILE=Param
`Param`	Currently used profiles
Description	Modify the configuration, the module restarts automatically Audio sink uses configurations: SPP, GATTS, HFP-HF, A2DP-SINK, AVRCP-CONTROLLER, LE AUDIO BIS-SINK, LE AUDIO CIS-SINK Audio source uses configurations: SPP, GATTS, GATTC, HFP-AG, A2DP-SOURCE, AVRCP-TARGET, LE AUDIO BIS-SOURCE, LE AUDIO CIS-SOURCE HID, PBAP, MAP are currently reserved and their functions are not yet implemented

AT+AUTOCONN - Get/Set the count of auto-reconnection on power-on

Command	AT+AUTOCONN{=Param}
`Param`	0: Disable 1 ~ 15: Reconnect times
Response	+AUTOCONN=Param
`Param`	Current auto reconnect configuration
Description	In Le Audio, the setting will be invalidated

AT+STAT - Get all state

Command	AT+STAT
Response	+STAT=Param1,Param2,Param3,Param4,Param5,Param6,Param7,Param8
`Param1`	+DEVSTAT - Device state
`Param2`	+SPPSTAT - SPP state
`Param3`	+GATTSTAT - GATT state
`Param4`	+HFPSTAT - HFP state
`Param5`	+A2DPSTAT - A2DP State
`Param6`	+AVRCPSTAT - AVRCP state
`Param7`	+BISSTAT - Le Audio Broadcast state
`Param8`	+CISSTAT - Le Audio Unicast state

AT+DEVSTAT - Get device state

Command	AT+DEVSTAT
Response	+DEVSTAT=Param
`Param`	+DEVSTAT - Device state

AT+ADDR - Get BR/EDR MAC address

Command	AT+ADDR
Response	+ADDR=Param
`Param`	Module's BR/EDR MAC address(12 bytes ASCII)

AT+LEADDR - Get BLE MAC address

Command	AT+LEADDR
Response	+LEADDR=Param
`Param`	Module's LE MAC address(12 bytes ASCII)

AT+NAME - Get/Set BR/EDR name

Command	AT+NAME{=Param1{,Param2}}
`Param1`	BR/EDR name
`Param2`	0: Disable suffix 1: Enable suffix“XXXX”(lower 4 bytes of MAC address) after name
Response	+NAME=Param
`Param`	BR/EDR name
Description	The configured name shall not exceed 31 bytes in maximum.

AT+LENAME - Get/Set BLE name

Command	AT+LENAME{=Param1{,Param2}}
`Param1`	BLE name
`Param2`	0: Disable suffix 1: Enable suffix“XXXX”(lower 4 bytes of MAC address) after name
Response	+LENAME=Param
`Param`	BLE name
Description	The configured name shall not exceed 31 bytes in maximum.

AT+SSP - Read/Write BR/EDR Pairing Mode (Valid for sink)

Command	AT+SSP{=Param}
`Param`	Pairing mode (0~2, default:1) (0) Legacy pairing, use pin code for pairing (1) Secure simple pairing, auto pairing (2) Secure simple pairing, display yes/no in pairing
Description	BT1058 features Bluetooth 5.4 + LEA. BT1038 & BT1058 series do not support SSP=0 parameter.
Response	+SSP=Param
Description	Need reboot.

AT+COD - Get/Set class of device

Command	AT+COD=Param
`Param`	Class of device(6 bytes ASCII)
Response	+COD=Param
`Param`	Current class of device
Description	Class of device reference COD

AT+PAIR - Get/Set Bluetooth Discoverability

Command	AT+PAIR=Param
`Param`	0: Exit BR/EDR discoverable mode 1: Enter BR/EDR discoverable mode
Response	+PAIR=Param
`Param`	Current Bluetooth Discoverability

AT+SCAN - Scan Nearby Devices

Command	AT+SCAN=Param1{,Param2}{,Param3}
`Param1`	0: Stop scanning 1: Scan BR/EDR devices 2: Scan LE devices 3: Scan Le Audio Broadcast audio
`Param2`	Scanning time, maximum 255 (Unit: second)
`Param3`	When Param1 is 2 and 3: 0: LE report format is the same as BR/EDR When Param1 is 2 and 3: 1: LE reports original broadcast data When Param1 is 2 and 3: 2: Only report devices that support Le Audio When Parameter1 is 1: Parameter3 is the filtered scanned device name
Description	+SCAN - Scan result

AT+PLIST - Get/Delete paired list

Command	AT+PLIST{=Param}
`Param`	0: Clear all paired record 1 ~ 8: Clear specific paired record with index MAC(12 bytes ASCII): Clear specific paired record with MAC address
Response1	+PLIST=Param1, Param2{,Param3}
`Param1`	Paired device's index
`Param2`	Paired device's MAC address
`Param3`	Paired device's name(UTF8)
Response2	+PLIST=E
Description	If param not exist then list all paired devices

AT+DSCA - Release all connections

Command	AT+DSCA
Description	This command only initiates a disconnect request The actual status depends on the query

AT+TPMODE - Get/Set throughput mode

Command	AT+TPMODE{=Param}
`Param`	0: Disable 1: Enable
Response	+TPMODE=Param
`Param`	Current throughput mode
Description	When SPP/GATT profile connected and throughput mode is on The command will be de-active, every byte received via physical UART will be sent to air

AT+AUXCFG - Get/Set audio input mode

Command	AT+AUXCFG{=Param}
`Param`	0: USB 1: Analog 2: SPDIF 3: I2S
Response	+AUXCFG=Param
`Param`	Current audio input mode
Description	It takes effect after the restart In le audio only support usb and analog

AT+LINKKEY - Get remote device link key

Command	AT+LINKKEY=Param
`Param`	MAC address of target device(12 bytes ASCII)
Response	+LINKKEY=Param1,Param2
`Param1`	MAC address of target device(12 bytes ASCII)
`Param2`	Target device's link key(32 bytes ASCII)

AT+RSSI - Get remote device rssi

Command	AT+RSSI=Param
`Param`	MAC address of target device(12 bytes ASCII)
Response	+RSSI=Param1,Param2
`Param1`	MAC address of target device(12 bytes ASCII)
`Param2`	Target device's RSSI
Description	If 0 is response, the acquisition failed

AT+LINKCFG - Get/Set Auto Scan and Connection (Valid for source)

Command	AT+LINKCFG{=Param1{,Param2}}
`Param1`	0: Disable 1: Enable
`Param2`	0: Scan all devices 1: Only scan devices with audio as the primary service

AT+AUDMODE - Get/Set Bluetooth Audio Mode (Valid for source)

Command	AT+AUDMODE{=Param}
`Param`	0: BR/EDR mode 1: Le Audio Broadcast mode 2: Le Audio Unicast mode
Description	Change this setting module will reboot

AT+PRINT - Get/Set report mode

Command	AT+PRINT{=Param}
`Param`	0: Disable 1: Enable
Description	On/Off module actively report a message

AT+MICMUTE - Mute MIC (Valid for sink)

Command	AT+MICMUTE=Param
`Param`	0-Unmute 1-Mute
Description	Mute the local mic during a call

AT+SPKMUTE - Mute Speaker (Valid for sink)

Command	AT+SPKMUTE=Param
`Param`	0-Unmute 1-Mute

HFP Commands

AT+HFPSTAT - Get HFP state

Command	AT+HFPSTAT
Response	+HFPSTAT=Param
`Param`	+HFPSTAT - HFP state

AT+HFPCONN - Establish HFP connection

Command	AT+HFPCONN{=Param}
`Param`	MAC address of target device(12 bytes ASCII)
Description	Reconnect to last HFP device if param not exist

AT+HFPDISC - Release HFP connection

Command	AT+HFPDISC
Description	This command only initiates a disconnect request The actual status depends on the query

AT+HFPRING - Simulate incoming call (Valid for source)

Command	AT+HFPRING{=Param}
`Param`	Phone number(ASCII)
Description	The phone number contains a maximum of 15 bytes Dial specific number if parameter exist, otherwise redial

AT+HFPANSW - Pick up incoming call

Command

AT+HFPANSW

AT+HFPCHUP - Reject/Hung up call

Command

AT+HFPCHUP

AT+HFPAUDIO - Establish/Release voice audio(Valid for source)

Command	AT+HFPAUDIO=Param
`Param`	0: Release voice audio connection with remote hfp sink device 1: Establish voice audio connection with remote hfp sink device

AT+HFPWBS - Get/Set HFP codec negotiation(Valid for source)

Command	AT+HFPWBS{=Param}
`Param`	0: Disable HFP codec negotiation 1: Enable HFP codec negotiation
Response	+HFPWBS=Param
Param	Current state

AT+HFPNREC - Get/Set HFP CVC

Command	AT+HFPNREC{=Param}
`Param`	0: Disable HFP CVC 1: Enable HFP CVC
Response	+HFPNREC=Param
Param	Current state

AT+HFPDIAL - Redial/Dial Phone Number (Valid for sink)

Command	AT+HFPDIAL{=Param}
`Param`	Phone number (1~25 Bytes ASCII)
Description	If the parameter exists, dial the specified number, otherwise, redial.

Example: Redial
<< AT+HFPDIAL
>> OK

Example: Dial the number "075527924639"
<< AT+HFPDIAL=075527924639
>> OK

AT+HFPDTMF - Send DTMF (Valid for sink)

Command	AT+HFPDTMF{=Param}
`Param`	*DTMF (0~9/#/)**

Example: Send DTMF "#" during a call
<< AT+HFPDTMF=#
>> OK

AT+HFPADTS - Voice Switch (Valid for sink)

Command	AT+HFPADTS=Param
`Param`	0: Transfer voice audio from the module to the remote device 1: Transfer voice audio from the remote device to the module
Description	If the parameter is omitted, switch alternately

AT+HFPVR - Start/Stop Voice Recognition of Remote Device (Valid for sink)

Command	AT+HFPVR=Param
`Param`	0-Stop 1-Start
Description	Start/Stop voice recognition of the remote device (e.g., Siri on iOS devices)

AT+HFPSCO - SCO Configuration (Valid for sink)

Command	AT+HFPSCO=Param
`Param`	0-default 1-always to HF 2-always to AG

AT+HFPBATT - Send Device Battery Level (Valid for sink)

Command	AT+HFPBATT=Param
`Param`	level(0-9)

A2DP/AVRCP Commands

AT+A2DPSTAT - Get A2DP state

Command	AT+A2DPSTAT
Response	+A2DPSTAT=Param
`Param`	+A2DPSTAT - A2DP State

AT+A2DPCONN - Establish A2DP connection

Command	AT+A2DPCONN{=Param}
`Param`	MAC address of target device(12 bytes ASCII)
Description	Reconnect to last A2DP device if parameter not exist

AT+A2DPDISC - Release A2DP connection

Command	AT+A2DPDISC
Description	This command only initiates a disconnect request The actual status depends on the query

AT+A2DPCFG - Get/Set A2DP configuration

Command	AT+A2DPCFG{=Param}
`Param`	A base-10 representation of a bit field, for each bit
`BIT[0]`	0: Disable AAC 1: Enable AAC
`BIT[1]`	0: Disable APTX 1: Enable APTX
`BIT[2]`	0: Disable APTX-LL 1: Enable APTX-LL
`BIT[3]`	0: Disable APTX-HD 1: Enable APTX-HD
`BIT[4]`	0: Disable APTX-AD 1: Enable APTX-AD
`BIT[5]`	0: Disable LDAC 1: Enable LDAC
Response	Current A2DP configuration
Description	BT1058 only support AAC,SBC,APTX, APTX-AD, APTX-HD,LDAC Audio sink supports decoding, while the source does not support encoding

AT+A2DPENC - Get the current encoding method used by A2DP (Valid for source)

Command	AT+A2DPENC
Response	+A2DPENC=Param
`Param`	+A2DPENC - A2DP Encoder

AT+A2DPDEC - Read A2DP decoding (Valid for sink)

Command	AT+A2DPDEC
Response	+A2DPDEC=Param
`Parameter`	1:SBC 2:AAC 3:LDAC 4:APTX 5:APTX-HD 6:APTX-AD

AT+A2DPRES - Set Resampling Enable (Valid for sink)

Command	AT+A2DPRES
Response	+A2DPRES=Param
`Param`	0:Disable resampling 1:Enable resampling
Description	This command is used to set the I2S audio output to fix LRCLK at 44.1K or 48K output Enabled by default

AT+A2DPAUDIO - Establish/Release A2DP audio connection(Valid for source)

Command	AT+A2DPAUDIO=Param
`Param`	0: Release A2DP audio connection with remote a2dp sink device 1: Establish A2DP audio connection with remote a2dp sink device

AT+AVRCPSTAT - Get AVRCP state

Command	AT+AVRCPSTAT
Response	+AVRCPSTAT=Param
`Param`	+AVRCPSTAT - AVRCP state

AT+AVRCPCONN - Establish AVRCP connection

Command	AT+AVRCPCONN{=Param}
`Param`	MAC address of target device(12 bytes ASCII)
Description	Reconnect to last device if parameter not exist

AT+AVRCPDISC - Release AVRCP connection

Command	AT+AVRCPDISC
Description	This command only initiates a disconnect request The actual status depends on the query

AT+AVRCPCFG - Get/Set AVRCP Configuration (Valid for sink)

Command	AT+AVRCPCFG{=Param}
`Parameter`	Represented as a decimal bit field, default:9, each bit indicates:
`BIT[0]`	Automatically obtain music ID3 information (Title, Artist, Album). Default:1
`BIT[1-4]`	If greater than 0, automatically obtain music status (playback progress). Default:5(second)
`BIT[5]`	Enable volume synchronization setting. Default:1

Example: Get AVRCP Configuration
<< AT+AVRCPCFG
>> +AVRCPCFG=1
OK

Example: Set to report playback progress every 1 second
<< AT+AVRCPCFG=3
>> OK

AT+PLAYPAUSE - Play/Pause (Valid for sink)

Command	AT+PLAYPAUSE
Description	Send play or pause command to the remote media player according to the current playback status

AT+PLAY - Play (Valid for sink)

Command	AT+PLAY
Description	Send play command to the remote media player

AT+PAUSE - Pause (Valid for sink)

Command	AT+PAUSE
Description	Send pause command to the remote media player

AT+FORWARD - Next Track (Valid for sink)

Command	AT+FORWARD
Description	Send next track command to the remote media player

AT+BACKWARD - Previous Track (Valid for sink)

Command	AT+BACKWARD
Description	Send previous track command to the remote media player

AT+FFWD - Fast Forward (Valid for sink)

Command	AT+FFWD=Param
`Param`	0-Send release fast forward command 1-Send press fast forward command
Description	Send fast forward command to the remote media player

AT+RWD - Rewind (Valid for sink)

Command	AT+RWD=Param
`Param`	0-Send release rewind command 1-Send press rewind command
Description	Send rewind command to the remote media player

GATT Commands

AT+GATTSTAT - Get GATT state

Command	AT+GATTSTAT
Response	+GATTSTAT=Param
`Param`	+GATTSTAT - GATT state

AT+GATTSEND - Send data via GATT

Command	AT+GATTSEND=Param1,Param2
`Param1`	Payload length(1 ~ 236)
`Param2`	Payload(1~236 bytes)
Description	If throughput mode is on, this command is de-active

SPP Commands

AT+SPPSTAT - Get SPP state

Command	AT+SPPSTAT
Response	+SPPSTAT=Param
`Param`	+SPPSTAT - SPP state

AT+SPPDISC - Release SPP connection

Command	AT+SPPDISC
Description	This command only initiates a disconnect request The actual status depends on the query

AT+SPPSEND - Send data via SPP

Command	AT+SPPSEND=Param1,Param2
`Param1`	Payload length(1 ~ 236)
`Param2`	Payload(1~236 bytes)
Description	If throughput mode is on, this command is de-active

LE Audio Commands

AT+BISSTAT - Get Le Audio state

Command	AT+BISSTAT
Response	+BISSTAT=Param
`Param`	+BISSTAT - Le Audio Broadcast state

AT+BISADD - BIS Add Synchronized Broadcast Source (Valid for sink)

Command	AT+BISADD=Param1,Param2
`Param1`	Broadcast advertising_sid
`Param2`	Broadcast broadcast_id

Example: Add the synchronized and discovered BIS broadcast source via AT+BISADD=15,62640
+BISADD=15,62640
OK

AT+BISREMOVE - BIS Remove Added Synchronized Broadcast Source (Valid for sink)

Command	AT+BISREMOVE
`Param`	NULL (No parameter)

AT+BISPLAY - BIS Play (Valid for sink)

Command	AT+BISPLAY=Param
`Param`	NULL (No parameter)

AT+BISPAUSE - BIS Pause (Valid for sink)

Command	AT+BISPAUSE=Param
`Param`	NULL (No parameter)

AT+CISDISC - Release Le Audio Unicast connection

Command	AT+CISDISC
Description	This command only initiates a disconnect request The actual status depends on the query Only In Le Audio unicast mode support

AT+CISCONN - Establish Le Audio Unicast connection

Command	AT+CISCONN=Param1,Param2
`Param1`	Address type 0:public address 1:random address
`Param2`	MAC address of target device(12 bytes ASCII)
Description	Only In Le Audio Unicast mode support

Events table

General Events

+VER - Frmware version information

Event	+VER=Param1,Param2,Param3
`Param1`	Module type
`Param2`	Firmware version
`Param3`	Firmware compile time

+DEVMOD - Device Mode Information

Event	+DEVMOD=Param
`Param`	Sick: Audio Reception Source: Audio Transmission

+DEVSTAT - Device state

Event	+DEVSTAT=Param
`Param`	A base-10 representation of a bit field, for each bit:
`BIT[0]`	0: Power off 1: Power on
`BIT[1]`	0: BR/EDR not discoverable 1: BR/EDR discoverable
`BIT[2]`	0: BLE not advertising 1: BLE advertising
`BIT[3]`	0: BR/EDR not scanning 1: BR/EDR scanning
`BIT[4]`	0: BLE not scanning 1: BLE scanning

+SCAN - Scan result

Event1	+SCAN =Param1,Param2,Param3, Param4,Param5{,Param6{,Param7}}
`Param1`	Index
`Param2`	0: LE public address 1: LE random address 2: BR/EDR address
`Param3`	MAC address(12 bytes ASCII)
`Param4`	RSSI(-127 ~ -1)
`Param5`	Size of Param6 if exist
`Param6`	Device name for BR/EDR devices or advertising data for LE devices
`Param7`	Class of device
Event2	+SCAN=E
Description	Scan finsh

+BIS - Broadcast Source Scan Result

Event 1	+BIS =Param1,Param2,Param3, Param4,Param5{,Param6}
`Param1`	Sequence number
`Param2`	Signal strength
`Param3`	Broadcast SID
`Param4`	Broadcast Broadcast
`Param5`	Broadcast address
`Param6`	Device name/Broadcast data
Event 2	+SCAN=E
Description	Scan completed

+PAIRED - Pair result

Event	+PAIRED=Param
`Param`	MAC address(12 bytes ASCII) of current pairing device

+I2SSR - I2S sample rate

Event	+I2SSR=Param
`Param`	I2S sample rate

HFP Events

+HFPSTAT - HFP state

Event	+HFPSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected 4: Outgoing call 5: Incoming call 6: Active call

+HFPDEV - HFP remote device information

Event	+HFPDEV=Param1{,Param2}
`Param1`	Remote MAC address(12 bytes ASCII) of current HFP connection
`Param2`	Remote device name(UTF8) of current HFP connection

+HFPCID - Incoming/Outgoing Call Phone Number

Event	+HFPCID=Param
`Param`	(1~25 Bytes ASCII), Phone number

Example: Dial 10086
<< AT+HFPDIAL=10086
>> +HFPSTAT=4
>> +HFPCID=10086
>> +HFPCIE=China Mobile
>> +HFPAUDIO=1

Example: Incoming call number 13265463800
>> +HFPSTAT=5
>> +HFPCID=13265463800
>> +HFPCIE=Jerry
>> +HFPAUDIO=1

+HFPCIE - Incoming/Outgoing Call Name

Event	+HFPCIE=Param
`Param`	(UTF8), Phone name
Description	This event is supported by Apple phones, while most Android phones do not support it

+HFPCONN - HFP connecting

Event	+HFCONN=Param
`Param`	Remote MAC address(12 bytes ASCII) of current HFP connecting

+HFPAUDIO - HFP voice audio State

Event	+HFPAUDIO=Param
`Param`	0: HFP voice audio disconnected, audio input/output routed to remote device 1: HFP voice audio connected, audio input/output routed to module

+HFPSIG - HFP Remote Device Network Signal Strength

Event	+HFPSIG=Param
`Param`	(0~5) Network signal strength of the remote device

+HFPROAM - HFP Remote Device Roaming Status

Event	+HFPROAM=Param
`Param`	(0/1) Roaming status of the remote device

+HFPBATT - HFP Remote Device Battery Level

Event	+HFPBATT=Param
`Param`	(0~5) Battery level of the remote device

+HFPNET - HFP Remote Device Network Operator

Event	+HFPNET=Param
`Param`	(UTF8) Network operator selection of the remote device

+HFPMANU - HFP Remote Device Manufacturer

Event	+HFPMANU=Param
`Param`	(UTF8) Remote device manufacturer

+HFPIBR - HFP Remote Device Supports Incoming Call Ringtone

Event	+HFPIBR=Param
`Param`	0-Not supported 1-Supported
Description	Indicates whether the currently connected mobile phone supports incoming call ringtones

+HFPNUM - HFP Remote Device Own Phone Number

Event	+HFPNUM=Param
`Param`	(ASCII) Own phone number of the remote device

+HFPSR - HFP sample rate

Event	+HFPSR=Param
`Param`	Sample rate

+HFPHUNG - HFP remote device reject an incoming call or end an ongoing call

Event

+HFPHUNG

+HFPVGS - HFP remote device spker gian

Event	+HFPVGS=Param
`Param`	Remote device spker gain

+HFPVGM - HFP remote device microphone gian

Event	+HFPVGM=Param
`Param`	Remote device microphone gain

A2DP/AVRCP Events

+A2DPSTAT - A2DP State

Event	+A2DPSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected 4: Streaming 5: Paused

+A2DPENC - A2DP Encoder

Event	+A2DPENC=Param
`Param`	1:SBC 2:APTX 3:APTX-HD 4:APTX-AD

+A2DPDEV - A2DP remote device information

Event	+A2DPDEV=Param1{,Param2}
`Param1`	Remote device's MAC address(12 bytes ASCII) of current A2DP connection
`Param2`	Remote device's name(UTF8) of current A2DP connection

+A2DPCONN - A2DP connecting

Event	+A2DPCONN=Param
`Param`	Remote MAC address(12 bytes ASCII) of current A2DP connecting

+A2DPSR - A2DP codec sample rate

Event	+A2DPSR=Param
`Param`	A2DP codec sample rate

+AVRCPSTAT - AVRCP state

Event	+AVRCPSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected

+PLAYSTAT - Media Player Playback Status

Event	+PLAYSTAT=Param
`Param`	(0) Stopped (1) Playing (2) Paused (3) Fast Forwarding (4) Fast Rewinding

+TRACKSTAT - Media Player Playback Progress

Event	+TRACKSTAT=Param1,Param2,Param3
`Param1`	(0~4), Media player status
`Param2`	(Decimal ASCII), Current music playback time (milliseconds)
`Param3`	(Decimal ASCII), Total duration of the current music (milliseconds)

+TRACKINFO - Media Music Information

Event	+TRACKINFO=Param1,Param2,Param3
`Param1`	Title
`Param2`	Artist
`Param3`	Album

Example: Mobile phone plays the song "Creep-Radio Head"

>> +TRACKINFO=Creep , Radiohead , Pablo Honey

+AVRCPCONN - AVRCP connecting

Event	+AVRCPCONN=Param
`Param`	Remote MAC address(12 bytes ASCII) of current AVRCP connecting

+SPKVOL - Remote spker volume change

Event	+SPKVOL=Param
`Param`	Remote spker volume

+CTVOLUP - volume up

Event	+CTVOLUP
Description	Receive volume up command

+CTVOLDN - volume down

Event	+CTVOLDN
Description	Receive volume down command

+CTPLAY - Track play

Event	+CTPLAY
Description	Receive play command

+CTPAUSE - Track pause

Event	+CTPAUSE
Description	Receive pause command

+CTSTOP - Track stop

Event	+CTSTOP
Description	Receive stop command

+CTFWD - Track forward

Event	+CTFWD
Description	Receive forward command

+CTBACK - Track backward

Event	+CTBACK
Description	Receive backward command

LE Audio Events

+BISSTAT - Le Audio Broadcast state

Event	+BISSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected 4: Streaming 5: Pause

+CISSTAT - Le Audio Unicast state

Event	+CISSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected 4: Streaming 5: Pause

+LEASR - LE Audio sample rate

Event	+LEASR=Param
`Param`	Sample rate

GATT Events

+GATTSTAT - GATT state

Event	+GATTSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected

+GATTDATA - GATT received incoming data

Event	+GATTDATA=Param1,Param2
`Param1`	Payload length
`Param2`	Payload

SPP Events

+SPPSTAT - SPP state

Event	+SPPSTAT=Param
`Param`	0: Unsupported 1: Standby 2: Connecting 3: Connected

+SPPDATA - SPP received incoming data

Event	+SPPDATA=Param1,Param2
`Param1`	Payload length
`Param2`	Payload

+SPPDEV - SPP remote device information

Event	+SPPDEV=Param1
`Param1`	Remote device's MAC address(12 bytes ASCII) of current SPP connection

Application Scenarios

Profile Initialization and Set Device Name

MCU change device name CARKIT reference code:

void change_name(void)
{
    uart_send("AT+NAME\r\n");
    if(uart_read("+NAME",name_buf))
    {
        if(memcmp(name_buf,"CARKIT",6))
        {
            uart_send("AT+NAME=CARKIT,0\r\n");  // disable MAC address suffix
            uart_send("AT+NAME\r\n");   // read bt name
            if(uart_read("+NAME",name_buf))
            {
                if(memcmp(name_buf,"CARKIT",6))
                {
                    //change name fail
                }
                else
                {
                    //change name success
                }
            }
        }
    }
}