Table of Contents
Advertisement
Quick Links
LM Technologies Ltd.
Revision
Date
v1.0
21-07-2009
v1.1
24-09-2009
v1.2
15-06-2010
v1.3
22-03-2011
v1.4
10-06-2011
v1.5
13-03-2013
AT Command Manual
Applicable for Firmware version 4.5X, 4.6X, 6.5X, 6.1X
Name
Kanwal
Kanwal
Kanwal
Sumeet
Kanwal
Sumeet
Description
Initial Draft version
New AT command added
Applicable to firmware v4.53, v4.61
Updates for firmware v6.51
Commands added for v6.17 firmware,
new sections added.
Add AT+RICD description
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for LM Technologies LM400
Summary of Contents for LM Technologies LM400
- Page 1 LM Technologies Ltd. AT Command Manual Applicable for Firmware version 4.5X, 4.6X, 6.5X, 6.1X Revision Date Name Description v1.0 21-07-2009 Kanwal Initial Draft version v1.1 24-09-2009 Kanwal New AT command added v1.2 15-06-2010 Kanwal Applicable to firmware v4.53, v4.61 v1.3...
-
Page 2: Table Of Contents
AT+FLOW ........................9 2.8.9 AT+ECHO ........................9 2.8.10 AT+RESP ........................10 2.8.11 AT+MODEM ......................10 2.8.12 AT+RICD ........................12 2.8.13 AT+ROLE ........................12 2.8.14 AT+ADDR ........................13 2.8.15 AT+FIND ........................13 ©2013 LM Technologies Ltd www.lm-technologies.com Page 2 of 26... - Page 3 2.9.3 Bluetooth 2.1 Security events ................... 22 2.10 Bluetooth Security Changes ....................23 2.10.1 Bluetooth 2.1 Security Methods ................23 2.10.2 Security Options ....................... 23 2.11 Default Factory Settings ....................26 ©2013 LM Technologies Ltd www.lm-technologies.com Page 3 of 26...
-
Page 4: Introduction
AT Command Manual v1.5 1 Introduction This document describes the configuration commands to control the operation of following LM Bluetooth devices: 1) LM400 module 2) LM780 module 3) LM072 module 4) LM071 Module 5) LM048 adapter 6) LM058 adapter 7) LM048SPA adapter... -
Page 5: Command Response
Command Type Parameter Command Device Information Test Firmware Version AT+VER Settings AT+ENQ Reset Restore Factory Settings AT+RESET Serial Port Baud Rate AT+BAUD Stop Bits AT+STOP Parity bits AT+PAR Flow Control AT+FLOW ©2013 LM Technologies Ltd www.lm-technologies.com Page 5 of 26... -
Page 6: Command Description
AT+AUTO Remote Configuration AT+RCFG Low power Mode AT+SLEEP Commands only available in v6.17 firmware onwards version running on LM780/LM400/LM072 module hardware. Command available in v4.56 and v6.18 firmware onwards on LM780/LM400/LM072 2.8 Command Description 2.8.1 AT This command allows the connected host device to check the availability of the Bluetooth device. -
Page 7: At+Enq
– varies from 10 to 20 for different baud rates. The baud rate varies from 1200bps to 921 Kbps. e.g. To set 19200 as UART baud rate, the command is AT+BAUD14<cr> Baud rate (bps) 1200 2400 4800 9600 19200 38400 57600 115200 230400 460800 921600 ©2013 LM Technologies Ltd www.lm-technologies.com Page 7 of 26... -
Page 8: At+Stop
2.8.7.1 AT+PARn<cr> where n – varies from 0 to 2 depending on the type of parity used. Parity Type None Even 2.8.7.1.1 Response <command_response> ©2013 LM Technologies Ltd www.lm-technologies.com Page 8 of 26... -
Page 9: At+Flow
The current setting can also be retrieved by sending this command in query format. 2.8.9.1 AT+ECHOc<cr> Where parameter c is a character used to enable/disable the echo back feature. Echo back ‘+’ Enable ‘-‘ Disable 2.8.9.1.1 Response <command_response> ©2013 LM Technologies Ltd www.lm-technologies.com Page 9 of 26... -
Page 10: At+Resp
Where parameter c is used to disable or configure Local Loopback or Remote Transfer settings on the adapter Modem Signals ‘-’ Disable ‘L‘ Local Loopback ‘R’ Remote Transfer 2.8.11.1.1 Response <command_response> The meaning of the modems signals is described in section 2.8.11.3 ©2013 LM Technologies Ltd www.lm-technologies.com Page 10 of 26... - Page 11 All 7 lines used. Only DTR, DSR CTS, DTR(R), DSR(R) signals transferred wirelessly to remote Bluetooth device. If RTS, CTS signals are not used, then this configuration is equivalent to LM048SPA Adapter running v4.6X firmware. ©2013 LM Technologies Ltd www.lm-technologies.com Page 11 of 26...
-
Page 12: At+Ricd
2.8.12 AT+RICD This command is present in firmware v6.18 on LM780/LM400/LM072 module and v4.56 on LM780. This command emulates the modem Ring Indicator (RI) and Data Carrier Detect (DCD) signals on certain PIO lines of LM780 module. For information about PIO lines, one can refer the LM780 Module Integration notes or LM780 module datasheet. -
Page 13: At+Addr
Inquire RSSI value for current bluetooth connection. This command is available in online command mode when the device is in connected state. 2.8.16.1 AT+RSSI<cr> 2.8.16.1.1 Response <cr,lf><RSSI><command_response> <RSSI> - can be STRONG/AVERAGE/WEAK depending on the received radio signal strength. ©2013 LM Technologies Ltd www.lm-technologies.com Page 13 of 26... -
Page 14: At+Name
PIN is "1234". Paired Bluetooth devices should have a same PIN code. The current pin code setting can be retrieved by sending this command in query format. In firmware v6.1x series running on LM780/LM400/LM072 modules, the fixed pin code will only be used for connection with remote Bluetooth 2.0 complaint device. Automatic pairing (also known as Just Works) takes place on connection with remote Bluetooth 2.1 complaint device. -
Page 15: At+Dcov
Bluetooth 2.0 device. The remote device must enable pin code security in order to connect successfully with local Bluetooth device. In firmware v6.1x series running on LM780/LM400/LM072 modules, fixed pin code use will have no effect during connection with remote Bluetooth 2.1 complaint device. Refer to section2.8.17, 2.8.27, 2.8.28, 2.8.29, 2.8.30, 2.8.31 for details. -
Page 16: At+Drop
<cr,lf><XXXX-XX-XXXX><command_response> if the command is successful. Here, XXXX-XX-XXXX is the Bluetooth address of bonded device. E.g. on default setup, there will be no bonded device, hence the response will be <cr,lf>0000-00- 0000<cr,lf><command_response> ©2013 LM Technologies Ltd www.lm-technologies.com Page 16 of 26... -
Page 17: At+Acon
E.g on default setup, the response will be <cr,lf>ESC+<command_response> 2.8.25 AT+AUTO The command directs the device to switch from online command mode to online data mode. This command is only allowed in connected state. ©2013 LM Technologies Ltd www.lm-technologies.com Page 17 of 26... -
Page 18: At+Rcfg
E.g. on default setup, the response will be <cr,lf>SLEEP- <command_response> 2.8.28 AT+DPIN This command is only available in v6.17 firmware running on LM780/LM400/LM072 modules. The dynamic pin code will only be used for connection with remote Bluetooth 2.0 complaint device. ©2013 LM Technologies Ltd www.lm-technologies.com... -
Page 19: At+Iotype
<command_response> 2.8.29 AT+IOTYPE This command is only available in v6.17 firmware running on LM780/LM400/LM072 modules. This command configures input output device type required for connection with remote Bluetooth 2.1 device. By default, IOTYPE is 3 which mean “No Display No Keyboard”. The current setting can be retrieved by sending this command in query format. -
Page 20: At+Mitm
<command_response> 2.8.31 AT+PASSCFM This command is only available in v6.17 firmware running on LM780/LM400/LM072 modules. It must be used during passkey security exchange before connection with remote Bluetooth 2.1 devices if local device “IOTYPE” has been configured as “Display with Yes or No” and MITM protection has been enabled. -
Page 21: At+Passkey
<command_response> 2.8.32 AT+PASSKEY This command is only available in v6.17 firmware running on LM780/LM400/LM072 modules. It must be used during passkey security exchange before connection with remote Bluetooth 2.1 devices if local device “IOTYPE” has been configured as “Keyboard only” and MITM protection has been enabled. -
Page 22: Bluetooth 2.1 Security Events
(“AT+DPIN”) command with the 4-8 digit pin code for authentication process. 2.9.3 Bluetooth 2.1 Security events Note: This section is only applicable for v6.17 firmware version running on LM780/LM400/LM072 module hardware. If applicable, refer to section 2.10 for more details. -
Page 23: Bluetooth Security Changes
2.10 Bluetooth Security Changes Note: This section is only applicable for v6.17 firmware version running on LM780/LM400/LM072 module hardware. Bluetooth security had significant changes and improvements in BTv2.1 specification. The most noticeable change was introduction of Secure Simple Pairing during authentication (also known as pairing) of Bluetooth connection between two Bluetooth v2.1 complaint devices. - Page 24 (“Display Yes or No”). The mobile phone user will display the passkey entered by local user and prompt mobile phone user to confirm ©2013 LM Technologies Ltd www.lm-technologies.com Page 24 of 26...
- Page 25 For example: On pairing request from mobile phone, automatic pairing takes place if MITM protection is disabled. The mobile phone user will be prompted to confirm automatic pairing with the local device. ©2013 LM Technologies Ltd www.lm-technologies.com Page 25 of 26...
-
Page 26: Default Factory Settings
IOTYPE No Display no keyboard MITM Disabled RICD Enabled/Disabled Parameters only used in firmware v6.17 running on LM780/LM400/LM072 modules Parameters only used in firmware v6.18 and v4.56 running on LM780/LM400/LM072 modules ©2013 LM Technologies Ltd www.lm-technologies.com Page 26 of 26... - Page 27 Largest Supplier of Electrical and Electronic Components Click to view similar products for manufacturer: LM Technologies Other Similar products are found below : LM400 LM832-0476 LM1010-0970 LM930-0635 LM931-0552 LM506 LM808 530-0653 530-0654 LM254 LM780 LM252 LM910-0630 LM072-3115 LM253 LM007-1051 LM817-0655 LM251 LM822-1459...
Need help?
Do you have a question about the LM400 and is the answer not in the manual?
Questions and answers