Telit Wireless Solutions BlueMod+S42 Installation manual

Mod. 0815 2016-08 Rev.1
BlueMod+S42/ADC/LUA
AT Command Reference
80512ST10860A Rev. 0 –2017-10-06

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICE
While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from anyinaccuracies or omissions in this document, orfrom use
of the information obtained herein. The information in this document has been carefully
checked and is believed to be reliable. However, no responsibility is assumed for inaccuracies
or omissions. Telit reserves the right to make changes to any products described herein and
reserves the right to revise this document and to make changes from time to time in content
hereof with no obligation to notify any person of revisions or changes. Telit does not assume
any liability arising out of the application or use of any product, software, or circuit described
herein; neither does it convey license under its patent rights or the rights of others.
It is possible that this publication may contain references to, or information about Telit products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that Telit intends to announce
such Telit products, programming, or services in your country.
COPYRIGHTS
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
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Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by
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applications of Telit, as arises by operation of law in the sale of a product.
COMPUTER SOFTWARE COPYRIGHTS
The Telit and 3rd Party supplied Software (SW) products described in this instruction manual
may include copyrighted Telit and other 3rd Party supplied computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted computer
programs, including the exclusive right to copy or reproduce in any form the copyrighted
computer program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW
computer programs contained in the Telit products described in this instruction manual may
not be copied (reverse engineered) or reproduced in any manner without the express written
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shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any
license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied
SW, except for the normal non-exclusive, royalty free license to use that arises by operation
of law in the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is furnished
by express license agreement onlyand may beused onlyin accordance with theterms of such
an agreement.
II. Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in aretrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit.
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT fault-
tolerant and are NOT designed,manufactured, orintended for use as on-line controlequipment
in the following hazardous environments requiring fail-safe controls: the operation of Nuclear
Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life
Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically
disclaim any expressed or implied warranty of fitness for such High Risk Activities.
IV. Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service
names are the property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with all
terms and conditions imposed on you in respect of such separate software. In addition to Third
Party Terms, the disclaimer of warranty and limitation of liability provisions in this License shall
apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM
ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY
MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM
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OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE,
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ANDWHETHER MADE UNDER CONTRACT, TORT OROTHER LEGALTHEORY, ARISING
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THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE
PRODUCTS
BLUEMOD+S42/ADC/LUA

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CONTENTS
NOTICE 2
COPYRIGHTS................................................................................................ 2
COMPUTER SOFTWARE COPYRIGHTS...................................................... 2
USAGE AND DISCLOSURE RESTRICTIONS............................................... 3
I. License Agreements..................................................................... 3
II. Copyrighted Materials................................................................... 3
III. High Risk Materials....................................................................... 3
IV. Trademarks .................................................................................. 3
V. Third Party Rights......................................................................... 3
APPLICABILITY TABLE................................................................................ 4
CONTENTS.................................................................................................... 5
1. INTRODUCTION.......................................................................... 7
Scope........................................................................................... 7
Audience....................................................................................... 7
Contact and Support Information .................................................. 7
Text Conventions.......................................................................... 8
Related Documents...................................................................... 9
2. FEATURES ................................................................................ 10
3. COMMAND SUMMARY ............................................................. 11
General....................................................................................... 11
Bluetooth Low Energy................................................................. 21
GATT.......................................................................................... 26
3.3.1. GATT Client Functionality........................................................... 26
3.3.2. GATT Server Definition............................................................... 28
3.3.3. GATT Server Data Handling on AT............................................. 34
3.3.3.1. Error Handling ............................................................................ 34
3.3.4. Data Handling with or without Connection................................... 34
4. APPENDIX ................................................................................. 35
Bluetooth Address ...................................................................... 35
Linktype...................................................................................... 35
AT Result Codes......................................................................... 35
Events ........................................................................................ 35

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5. GLOSSARY AND ACRONYMS................................................. 38
6. DOCUMENT HISTORY .............................................................. 39

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1. INTRODUCTION
Scope
This document specifies the command interface for the BlueMod+S42/ADC/LUA firmware.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement Bluetooth modules in their application.
Contact and Support Information
For general contact, technical support services, technical questions and report documentation
errors contact Telit Technical Support at:
[e-mail]
Alternatively, use:
http://www.telit.com/support
For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:
http://www.telit.com
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and
suggestions for improvements.
Telit appreciates feedback from the users of our information.

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Text Conventions
Danger –This information MUST be followed or catastrophic equipment
failure or bodily injury may occur.
Caution or Warning –Alerts the user to important points about
integrating the module, if these points are not followed, the module and
end user equipment may fail or malfunction.
Tip or Information –Provides advice and suggestions that may be
useful when integrating the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

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Related Documents
[1] BlueMod+S42 Hardware User Guide, 1VV0301303
[2] BlueMod+S42 Lua Software User Guide, 1VV0301471
[3] BlueMod+S42 Lua API Documentation, 30512ST10861A
[4] Bluetooth 4.0 Core Specification

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2. FEATURES
The BlueMod+S42/ADC/LUA supports AT command mode.
In the factory-default configuration the BlueMod+S42/ADC/LUA supports the AT command
Mode via an internal Software interface.
Each command line consists of a prefix, a body and a terminator.
All command lines begin with the prefix AT (ASCII 065, 084) or at (ASCII 097, 116).
The body is a string of characters in the ASCII range 032-255. Control characters other than
<CR> (carriage return; ASCII 013) and <BS> (back space; ASCII 008) in a command line are
ignored.
The terminator is <CR>.
There is no distinction between upper-case and lower-case characters. A command line can
have a maximum length of 80 characters. It is automatically discarded if the input is longer.
Corrections are made using <BS>. Multiple commands on the same command line are not
allowed.
Commands have the following syntax:
Syntax
Description
AT<command>=<value><CR>
Write the value of the command
AT<command>?<CR>
Read the value of the command
Exceptions of this syntax are marked separately.
Responses are sent back to the host and can be any of the following:
Responses
Description
<CR><LF>value<CR><LF>
Current value
<CR><LF>
list entry 1<CR><LF>
list entry 2<CR><LF>
…
list entry n<CR><LF>
<CR><LF>
List value (e.g. AT+BNDLIST)
<CR><LF>OK<CR><LF>
Successful final message
<CR><LF>ERROR<CR><LF>
Error message, command not supported

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3. COMMAND SUMMARY
The description of the commands is structured into the following parts:
General commands
Bluetooth Low Energy (BLE) specific commands
Generic Attribute Profile (GATT) specific commands
The factory-default values of the commands are marked using the bold letter format.
General
&F Load Factory Defaults
AT syntax: AT&F<value>
The factory-default values will be loaded.
Value
Description
0
Set all parameters except bndlist to factory defaults
1
Set all parameters to factory defaults
When AT+LEPRIVACY=2 is active (Link Layer Privacy enabled) the AT&F1 command
generates a new Identity Resolving Key (IRK). This key is used to calculate the local random
resolvable address and exchanged during bonding. Bychanging the IRK all previously bonded
peer devices are no longer able to resolve the local random resolvable address.
In case of value=1 the non volatile bonding information will be deleted.

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+BIOCAP SSP I/O Capabilities
AT syntax: AT+BIOCAP=<value>
This command sets the input and output capabilities of the device used for SSP.
Value
Description
Related commands
Related events
0
Display only
n.a.
SSPPIN
1
Display Yes/No
+BSSPCONF (secure connection)
SSPPIN (LE legacy pairing)
SSPCONF (secure connection)
2
Keyboard only
+BSSPPIN
SSPPIN
3
No input
no output
n.a.
n.a.
4
Display and
keyboard
+BSSPPIN (LE legacy pairing)
+BSSPCONF (secure connection)
SSPPIN (LE legacy pairing)
SSPCONF (secure connection)
+BNAME Local Device Name
AT syntax: AT+BNAME=<name>
This command allows the modification of the local device name. The device name is shown
on a remote Bluetooth device during device/service discovery. It is limited to 19 characters.
The device name can contain a format element to include the device’s own address or parts
of it in the name.
In BLE advertising the name is truncated to the first 8 characters.
Format: “%[<s>][<d>]a”
“%”
Identifier start format element
<s>
Character separator on byte order (optional)
<d>
Number (1-12) of digits included in device name (optional, default is 4)
“a”
Identifier end format element
Examples: Device address = “0123456789AB”
AT+BNAME=LUA %2a
Display on remote end: LUA AB
AT+BNAME=LUA %4a
Display on remote end: LUA 89AB
AT+BNAME=LUA %:3a
Display on remote end: LUA 9:AB
AT+BNAME=LUA %3a
Display on remote end: LUA 9AB
AT+BNAME=LUA %:12a
Display on remote end: LUA 01:23:45:67:89:AB

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+BNDDEL Delete Bonding Information
AT syntax: AT+BNDDEL=<value>
This command deletes the bonding information stored by the BlueMod+S42/ADC/LUA.
Value
Description
Bluetooth address
Delete the bond of the device with specified address from the
bonded-device list
*
Delete all bonded devices from the bonded-device list
This command can only be executed while not connected.
+BNDLIST Show Bonded Device List
AT syntax: AT+BNDLIST
This command shows information about the devices bonded with the BlueMod+S42/ADC/LUA.
Each entry in the bonded-device list contains the Bluetooth address and the linktype (see
chapter 4.2).
Example:
AT+BNDLIST
0080254800DA 0x02
9C04EB06ACA2 0x03
OK
+BNDS Storage Mode for Bonds
AT syntax: AT+BNDS=<mode>
This command controls the storage mode for bonding information (link keys).
Mode
Description
0
Bonds persists for the duration of the authenticated connection
1
Bonds are permanently stored in the NVRAM of the module

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By setting AT+BNDS the bonded-device list is deleted internally.
The bonding information is stored in the module flash. If your application
does not need to store bonds switch this parameter to 0, to protect the
module flash from unnecessary clear and write operations. Every flash
has a limited number of clear cycles.
+BNDSIZE Bonded Devices List Size
AT syntax: AT+BNDSIZE=<value>
This command reduces the number of devices (1…4) the bonded-device list can hold.
The BlueMod+S42/ADC/LUA can store up to 4 devices. The default size is 4.
Modification of this parameter will delete all devices in the bonded-
device list.
Example:
AT+BNDSIZE=1
Limit the number of bonded devices to 1
+BOAD Bluetooth Own Device Address
AT syntax: AT+BOAD
This command reads the Bluetooth devices’ own device address.
This command is read only.

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+BPAIRMODE Configure Pairable Mode
AT syntax: AT+BPAIRMODE=<mode>
This command controls the pairable mode of the BlueMod+S42/ADC/LUA.
When set to “0” the module is only connectable for clients stored in the local bondlist. New
pairing requests will be rejected.
Mode
Description
0
No pairing allowed, BlueMod+S42/ADC/LUA advertises TIO as “functional”
1
Pairing allowed, BlueMod+S42/ADC/LUA advertises TIO as “bondable and
functional”
+BSSPCONF Security Pairing Confirmation
AT syntax: AT+BSSPCONF <Bluetooth address>,<address type>,<value>
If a pairing is initiated and LE secure connection is supported, depending on the security
settings AT interface generates an event SSPCONF and asks the user for confirmation.
Event: SSPCONF <Bluetooth address>,<address type> <passkey> ?
The user has to confirm the passkey with the above command. If no confirmation is sent by
the user within the bonding timeout or in case of active reject, the pairing is rejected with NO
CARRIER message.
Value
Description
0
Reject passkey confirmation request
1
Accept passkey confirmation request
Example:
SSPCONF 00802507C08D,t2 794851 ?
AT+BSSPCONF 00802507C08D,t2,1
OK
Receive SSP pairing request
Send SSP pairing confirmation
+BSSPPIN SSP Passkey Response
AT syntax: AT+BSSPPIN <Bluetooth address>,<address type>,
<SSP passkey>
If an authentication is initiated (AT+LETIO=3), depending on theI/O capabilities(AT+BIOCAP)
the AT interface generates an event SSPPIN and asks the user for the SSP passkey.
Event: SSPPIN <Bluetooth address>,<address type> ?

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The user has to answer this request with the SSP passkey displayed on the remote device.
Example:
SSPPIN 00802507C08D,t2 ?
AT+BSSPPIN 00802507C08D,t2,314546
OK
Receive SSP passkey request
Send SSP passkey response
+BSSPDBG SSP Debug Mode
AT syntax: AT+BSSPDBG=<value>
This command allows to enable the SSP debug mode of the device. This mode is required to
trace the SSP Bluetooth connection by using a sniffer.
Value
Description
0
SSP Debug mode off
1
SSP Debug mode on
SSP debug mode is for tracing purposes only and shall be deactivated
for normal operation. Otherwise the connection may be unsecure.
E Local Echo
AT syntax: ATE<value>
This command selects the local echo in command mode.
Value
Description
0or empty
No local echo
1
Local echo on in command phase
H Disconnect
AT syntax: ATH
This command disconnects the existing Bluetooth connection.

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I Display Version Information
AT syntax: ATI<value>
Displays different information about version number and settings.
Value
Description
0 or empty
Returns the device name (e.g. “LUA %4a“)
1
Returns “0”
2
Returns “OK”
3
Returns the version string: “V1.xyz”
4
Returns the manufacturers name: “Stollmann E+V GmbH”
5
Returns “ERROR”
6
Returns the copyright string: “(c) Copyright Telit”
7
Returns “OK”
8
Returns “ERROR”
9
Returns “OK”
77
Returns bootloader version
99
Returns the firmware creation date
+PNPPID PnP Product ID
AT syntax: AT+PNPPID=<value>
This command sets the product ID provided in the device information service (DIS).The format
is a 16 bit hex value. The default value is 0xB017 (Telit product IDfor BlueMod+S42/ADC/LUA
firmware).
+PNPPVER PnP Product Version
AT syntax: AT+PNPPVER=<value>
This command sets the product version provided in the device information service (DIS).
The format is a 16 bit hex value. The default value is the version number of the particular Telit
BlueMod+S42/ADC/LUA firmware, e.g. 0x1000 for firmware version 1.000.

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After setting the vendor ID (AT+PNPVID) to a different value than the
default 0x008F the user has to set his own product version (otherwise
the value 0x0100 will be used).
+PNPVID PnP Vendor ID
AT syntax: AT+PNPVID=<value>
This command sets the vendor ID provided in the device information service (DIS).
The format is a 16 bit hex value. The default value is 0x008F (Telit vendor ID).
+PNPVSRC PnP Vendor ID Source
AT syntax: AT+PNPVSRC=<value>
This command sets the vendor ID source provided in the device information service (DIS).
Value
Description
1
Bluetooth SIG assigned company ID
2
USB assigned company ID
Q Suppress Results
AT syntax: ATQ<value>
This command allows/suppresses result codes and messages.
Value
Description
0 or empty
Enable result messages after command input
1
Suppress result messages after command input

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+RESET Reset Device
AT syntax: AT+RESET
This command resets the whole functionality of the BlueMod+S42/ADC/LUA by a forced
hardware reset (like power off/on).
No OK response will be sent before the device performs a reset.
+RFMAXTXPWR Maximum Output Power
AT syntax: AT+RFMAXTXPWR=<value>
This command sets the maximum output power of the Bluetooth radio of the device. A changed
value becomes active immediately.
Value
Description
-128
Use factory default maximum output power of 4 dBm
4
4 dBm
3
3 dBm
0
0 dBm
-4
-4 dBm
-8
-8 dBm
-12
-12 dBm
-16
-16 dBm
-20
-20 dBm
-30
-30 dBm
All other values in the range of -127 to 127 could be set with this command as well, but the
equal or next lower value from the power table will be set internally. Furthermore, the value will
be set to a value amongst minimum and maximum output power value of the device.
Example:
AT+RFMAXTXPWR=0
The maximum output power will be set to 0 dBm

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+SYSTEMOFF Enter System Off Mode
AT syntax: AT+SYSTEMOFF
This command sets the module into low power mode during the time the module is not used.
When setting AT+SYSTEMOFF (or AT+SYSTEMOFF=1) the module will wake-up on GPIO
activity. To achieve the lowest power consumption set AT+SYSTEMOFF=2. In this case the
module will wake-up by RESET signal.
Value
Description
1
Wake-up by GPIO
2
Wake-up by RESET signal
Possible use cases and a usage example are described in the BlueMod+S42 Lua Software
User Guide [2].
V Result Message Format
AT syntax: ATV<value>
This command determines the format of the result messages.
Value
Description
0 or empty
Result message is presented numerically (followed by <CR>)
1
Result message is presented as text