AT Commands
Template
| Excute | Feedback | Read | Feedback | Write | Feedback | Test | Feedback | Description |
|---|---|---|---|---|---|---|---|---|
| - | - | - | - | - | - | - | - | - |
GSM - Basic
| Command | Description | Header text |
|---|---|---|
| AT -> OK | Example | - |
| AT+CPIN? -> +CPIN: READY | sim card ready, and will have "call ready" later | - |
| AT+CREG? -> +CREG: 0,1 | This checks if SIM is registered or not | - |
| AT+CGATT? -> +CGATT: 1 | Check if GPRS is attached or not | - |
GNSS
- AT+QGNSSC=1 Power on
- AT+QGNSSRD=NEMA/GLL, AT+QGNSSRD? GNSS read
- AT+QGNSSTS? RTC time
GPRS - TCPIP
| Command | Description | Header text |
|---|---|---|
| AT+QIOPEN="TCP","139.59.102.70","8100" -> CONNECT OK | First open a TCP connection | - |
| AT+QISEND -> type anythings -> 0x1a (send as hex input, this is a CTRL+Z character) -> SEND OK | Send data to it | - |
| AT+QICLOSE -> CLOSE OK | Close connection | - |
Bluetooth Module Basic Command List
| Send | Parameter | e.g | Return | Description | Availability |
|---|---|---|---|---|---|
| AT | No | AT | OK | Test Communication | EDPA, BC04-A, BC04-B |
| AT+BAUD? | 1~9, A, B,C | AT+BAUD1 | OK1200 | Change Baud Rate | EDPA, BC04-A, BC04-B |
| AT+NAME? | - | AT+NnameElectrodragon | OKElectrodragon | Change Name | EDPA, BC04-A, BC04-B |
| AT+PIN? | - | AT+PIN3456 | OKsetpin | Set pin password, 4 bytes | EDPA, BC04-A, BC04-B |
Baud rate Parameter
- 1---------1200
- 2---------2400
- 3---------4800
- 4---------9600
- 5---------19200
- 6---------38400
- 7---------57600
- 8---------115200
- 9---------230400
- A---------460800
- B---------921600
- C---------1382400
P.S: when the baud rate changed, if it's not default 9600, you need to set correct baud rate for further settings or data communication. It's not recommended to use over 115200 Baud rate, system will be not stable due to the interference. If you fail to use when the baud rate set to over 115200, please use MCU which has frequency over 115200 to re-programme it and reset AT commands, etc.
BC04-B Advanced Command List
Downlink Command
| Command Name | Command | Response | Parameter |
|---|---|---|---|
| Check version | AT+VERSION | +VERSION=<Para1> | <Para1>: Firmware version number, the Bluetooth version number, the local HCI version, HCI amendments, LMP version number, LMP sub-version number |
| check help | AT+HELP | ... | |
| Reset to default | AT+DEFAULT | OK | null |
| reset | AT+ RESET | OK | null |
| check/set device type | AT+COD AT+COD< Para1>,<Para2> |
OK or error | <Para1>: Local device type (length must be 6 bytes) from the mode is in effect, the end retrieval <Para2>: Filtration equipment type effect in the main mode for filtering search to equipment (if you set 000,000 returns all search equipment) default: 001f00, 000000 |
| check/set module SPP master/slave mode | AT+ROLE AT+ROLE< Para1> |
OK or error | <Para1>: 0 --- from the device; 1 --- master; Default: 0 from equipment |
| check/set GIAC | AT+IAC< Para1> | OK or Error | <Para1>: The query access code, default value: 9e8b33 specific settings, see Appendix 2: query access code Description |
| check/set remote bluetooth device name | AT+RNAME< Para1> | OK or Error | <Para1>: remote Bluetooth device address |
| check/set inquiry mode | AT+INQM<Para1>,<Para2>,<Para3> | OK or Error | <Para1>: Query mode: 0: inquiry_mode_standard,1: inquiry_mode_rssi, 2: inquiry_mode_eir, Length: 1 byte, <Para2>: Up Bluetooth Device response, Length: 2 bytes, <Para3>: Query timeout, Timeout range :1-30(Converted into time :1.28-61.44 seconds), Length: 2 bytes, Default: 1,9,30 (16 hex) |
| check/set connection mode | AT+CMODE< Para1> | OK or Error | <Para1>: 0: specified Bluetooth address connected mode (specified Bluetooth address set by the BIND command) 1: Any Bluetooth address connection mode |
| check/set bluetooth address | AT+BIND<Para1> | OK or Error | <Para1>: Set binding Bluetooth address format: 11,22,33,44,55,66 |
| clear memory address | AT+CLEAR | OK | Null |
| check/set UART MODE | AT+ UARTMODE<Para1>,<Para2> | OK or Error | <Para1>: Stop bit: 0:1 stop bit, 1:2 stop bit <Para2>: Parity: 0: no parity, 1: Odd, 2: Even parity, default value: 0,0 |
| check local BT address | AT+LADDR | +LADDR=<Para1> | <Para1>: Local Bluetooth address, for example: 11:22:33:44:55:66 |
| checkt BT module working status | AT+STATE | +STATE=<Para1> | Example |
| check/set Remote Bluetooth device automatically search | AT+ AUTOINQ<Para1> | Ok or Error | 0=no, 1=yes |
| check remote bluetooth device | AT+INQ | Ok | null |
| cancel check remote bluetooth device | AT+INQC | Ok | null |
| check/set Whether to automatically connect to a remote Bluetooth device | AT+ AUTOCONN<Para1> | OK or Error | 0=Not Auto, 1= Auto |
| Connect to remote bluetooth device | AT+CONNECT<Para1> | OK or Error | <Para1>:
Set the remote bluetooth address format: |
| check/set Page scan and inquiry scan parameters | AT+IPSCAN<Para1>,<Para2>,<Para3>,<Para4> | OK or Error | <Para1>: Query interval <Para2>: Query duration |
| check/set Encrypt mode | AT+SENM<Para1>,<Para2> | OK or Error | <Para1>: Safe mode, the following values (1 byte): 0 - sec_mode0_off |
| Check/set low power Mode | AT+ LOWPOWER<Para1> | ok or error | 0=not support, 1=support, default =1 |
| check/set sniff energy save mode | AT+SNIFF<Para1>,<Para2>,<Para3>,<Para4> | ok or error | <Para1> - max time, <Para2> - min time, <Para3> - trial time, <Para4> - timeout time |
| check/set indication upward command | AT+ENABLEIND<Para1> | ok or error | 0= close, 1= open, default 1 |
| check Bluetooth pairing list | AT+LSP | LSP=<Para1>,<Para2>,<Para3> …… LSP=E |
<Para1>：number（0-7） <Para2>：bluetooth address code <Para3>：name default feedback：LSP=E |
| Clear all bluetooth pairing list | AT+RESETPDL | Ok | - |
| clear selected bluetooth pairing record | AT+REMOVEPDL<Para1> | OK | <Para1>：number（0-7） |
| check/set linkloss checking time | AT+SUPERVISION<Para1> | Ok or error | <Para1> response time, unit in second (Hex), default 5 |
Uplink Command list
| Command Name | Command | Response | Parameter |
|---|---|---|---|
| ready | +READY | - | - |
| inquiry status | +INQUIRING | - | - |
| inquiry pairing status | +PAIRABLE | - | - |
| connecting | +CONNECTING<Para1> | - | - |
| connected | +CONNECTED | - | - |
| connection fail | +CONNECTION FAILED | - | - |
| report remote bluettoth device name | +RNAME=<Para1> | - | <Para1>： report remote bluetooth name |
| report inquiry result | +INQS start inquiry +INQ=<Para1>,<Para2>,<Para3> …… device information +INQE inquiry completed |
- | <Para1>：bluetooth address format：11:22:33:44:55:66 <Para2>：device type <Para3>：RSSI signal strength (normal is decimal) signal strengthness (default in decimal return 7fff when is not available) |