ST Microelectronics S R L 16C2 Bluetooth class 2 module User Manual GSBT2416C2DBxxx V01

ST Microelectronics S.R.L. Bluetooth class 2 module GSBT2416C2DBxxx V01

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Users Manual Part I HTML Version

Contents

1. Users Manual Part I
2. Users Manual Part II

Users Manual Part I

GSBT2416C2DB.xxx

User manual

June 2007

FEATURES

- Bluetooth V1.2 board

- Serial interface on DB9 connector

- USB connection

- PCB antenna on board

- Single 5 V supply voltage

- CE compliant

- FCC compliant

FCC ID: S9N16C2

DESCRIPTION

GSBT2416C2DB.xxx is a Bluetooth Class2 Demoboard for GSBT2416C2 Bluetooth module including the RF antenna.

Suffix xxx identify the Firmware release : no suffix for HCI commands and AT1 for AT commands.

GSBT2416C2DB. is a board with a downloaded FW which enables the user to to interface the Bluetooth module with HCI

commands.

GSBT2416C2DB.AT1 is a board with a downloaded FW which enables the user to create a Bluetooth link with simple AT

commands.

AT commands are sent by means the serial line which is accessible by the DB9 connector.

SPBT2425C2DB.xxx board can be supplied by an external 5V DC source or via the USB port

1 - RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Conditions Min Typ Max Unit

VDD Board Supply voltage -20°C < T < 70°C 4 5 6 V

Tstg Operating ambient temperature -20 +70 °C

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 2/13

2 - I/O CONNECTIONS

DESCRIPTION

1 Boot signal - If connected to GND the module can perform the dowloading – see also

JP1

J1

2 Reset signal - A low level on this pin force the module in reset state - see also S3

J2

USB Port

When the USB port is connected , the 5V USB is used ( by the 3.3V regulator) to

supply the BT module and the board itself

When USB port is used do not supply an ext. 5V to J4 power plug

USB port is not used for AT version

J3

Serial line port ( DB9 male connector)

On board is present a level translator to adapt the BT module digital levels to the

RS232 standard levels.

J4 Vcc Power supply plug ( 5V )

When 5v input is used on J4 plug do not connect USB port

1 GPIO 15

2 GPIO 14

3 GPIO 13

4 GPIO 12

5 GPIO 11

6 GPIO 10

7 GPIO 9

8 GPIO 8

9 GPIO 7

10 GPIO 4

11 GPIO 3

12 GPIO 2

J5

13 GPIO 0

JP1 Boot

If connected to GND the module can perform the dowloading

JP2 DB9 connector connection – see electrical drawing

JP3 DB9 connector connection – see electrical drawing

JP4 DB9 connector connection – see electrical drawing

JP5 DB9 connector connection – see electrical drawing

JP6 DB9 connector connection – see electrical drawing

S1

N.O. push button connected to BT module GPIO6; when activated a Low level is

applied to GPIO6 otherwise GPIO6 is at High level.

Not used for AT commands version

S2 Switch connected to GPIO3 ( 10 KΩ pullup to 3.3V)

In AT version this switch is used to select Command / Data mode

S3 Reset – Push button acting on the module reset pin

L1 LED connected to BT module GPIO1 .

On AT version this led shows when a Bluetooth connection is ON (led ON )

L2 LED showing the presence of the 3.3V internal voltage – Bluetooth module supply

voltage

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 3/13

3 - BOARD LAYOUT

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 4/13

JP4

PC_RTS

JP5

JP3

PC_RX

PC_CTS J3

5

9

4

8

3

7

2

6

1

PC DTR

JP6

GND

PC DSR

JP2

C1

22u

6.3V

GPIO5

J2

USB CON.

1

2

3

4

GPIO1

L1

GREEN R2

470 Ohm

R1

10K

GPIO6

S1

C11

NM

D1 BYV10-60

Vext+5V

GND

J4

PLUG

1

3

2

C6

100n

+3.3V

U4 ST3232

C1- 3

C2+ 4

C2- 5

V- 6

T2out 7

R2in 8

R2out

9T2in

10

GND

15

T1out

14

C1+ 1

T1in

11

V+ 2

R1in

13

R1out

12

Vcc

16

PC_TX

C8 100n

C10 100n

C7

100n

U2 74V1G66CTR

I/O

1

O/I

2

GND

3C4

Vcc 5

C9

100n

RESET

BOOT

J1

1

2

+3.3V

BT1

BLUETOOTH MODULE GS-BT2416C2

GPIO0

25

GPIO1

26

GPIO2

27

GPIO3

28

GPIO4

29

GPIO5

30

GPIO6

31

GPIO7

32

GPIO8

33

GPIO9

34

GPIO11

35

GPIO10

36

GPIO12

37

GPIO13

38

GPIO14

39

GPIO15

40 (JTAG1) TD I 1

(JTAG4) TDO 4

(JTAG2) TMS 2

(JTAG0) NTRST 3

(JTAG3) TCK 5

(I2C_DAT) I2C0 7

(I2C_CLK) I2C1 8

INT1 6

PCM_SYNC 10

PCM_CLK 9

PCM_A 12

PCM_B 11

USB_DN 21

USB_DP 22

(UART_RX) RXD 13

(UART_TX) TXD 14

(UART_CTS) CTS 15

(UART_RTS) RTS 16

SPI_FRM 17

SPI_CLK 18

SPI_TXD 19

SPI_RXD 20

VIN (VDDIO)

41

GND

42

RESET 23

BOOT 24

RF-GND

43

ANT

44

RF-GND

45

L2

GREEN

R4

470 Ohm

C5

100n

J5

1

2

3

4

5

6

7

8

9

10

11

12

13

ANT1

ANTENNA BLUETOOTH

JP1

GPIO5

NM = NOT MOUNTED

+3.3V

S3

R3

10K

+3.3V

Data

Command

S2

2

1

3

U1 LD2985BM33R

Vin 1

GND 2

By Pass

4

Vout

5

INHIBIT 3

USB +5V

FOR INTERNAL FLASH

PROGRAMMING

C3

10u

6.3V

USB (D-)

USB (GND)

USB (D+)

USB (Vcc)

C12 39pF

C2

10n

U3 USBUF01W6

D1

1GND

2D2

3D3 4

3.3V 5

D4 6

C4

100n

+3.3V

4 - ELECTRICAL DRAWING

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 5/13

5 - DOWNLOADING

GSBT2416C2DB.xxx has also the possibility to be downloaded with a file developed by the user

To download a file into GSBT2416C2DB the below items must be followed:

- connect the board to a PC by means a RS232 cable connected on COM1 / COM2

- put a jumper on JP1 ( Boot pin to low level)

- connect the power supply cable to the board at +5V ext Vin

- open the “Flash loader “ program

- choose UART on Transportation layer section

- choose the appropriate COM1 / COM2 port

- choose the firmware to be downloaded on “Firmware “ section

- press start : on the dialog bar will appear “ reset the board”

- power the board ( a reset is generated) : on the dialog bar will appear the % of the downloading.

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 6/13

6 - CERTIFICATIONS

6.1 - CE

Measurements have been performed in accordance with ( report available on request):

EN 300 328 V 1.6.1 (2004-11) : “ Electromagnetic compatibility and radio spectrum Matters (ERM); Wideband Transmission

Systems; Data transmission equipment operating in the 2.4GHZ ISM band and using wide band modulation techniques;

Harmonized EN covering essential requirements under article 3.2 of the R&TTE directive”

EN 301 489-17 V 1.2.1 :2002: “ Electromagnetic compatibility and radio spectrum Matters (ERM); ElectroMagnetic

Compatibility (EMC) standard for radio equipment and services ; Part 17: Specific condition for 2.4GHz wideband transmission

systems and 5 GHz High performance RLAN equipment.”

EN 60950-1 : “Information technology equipment -Safety –Part 1 : General requirements “

6.2 - FCC

To get compliance with FCC CFR47 part15 the following tests have been performed:

CFR47 part 15 section Title Result

15.203 15.247 (b) (4) (i) Antenna requirements pass

15.247 (a) Conducted emission pass

15.209 (a) (f) Radiated emission pass

15.247 (a) Frequency hopping –Spread Spectrum Spec pass

15.247 (b) Maximum Peak Output power pass

15.247 (d) 100 kHz Bandwidth of Frequency Band Edges pass

15.247 (d) Conducted emission pass

15.247 (e) Power Spectral density pass

15.247 (g) FHSS transmission characteristics pass

15.247 (i) (§47CFR1.1307 (b)(1)) RF Humane exposure pass

This board has the following FCC ID:

FCC ID:S9N16C2

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 7/13

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including

interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of

the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential

installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance

with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna

- Increase the separation between the equipment and receiver

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

Consult the dealer or an experienced radio/TV technician for help.

Antenna

Our board type GS-BT2416C2DB.xxx is for OEM integrations only. The end-user product will be

professionally installed in such a manner that only the authorized antennas are used.

Caution

Any changes or modifications not expressed approved by the party responsible for compliance could cause the module to cease

to comply with FCC rules part 15, and thus void the user’s authority to operate the equipment.

Label instruction

Module type : Bluetooth class 2 board GSBT2416C2DB.xxx (GSBT2416C2 module + PC 787 carrier

board)

FCC-ID : S9N16C2

This intends to inform you how to specify the FCC ID of our Bluetooth board GSBT2416C2DB.xxx on your final

product.

Based on the Public Notice from FCC, the product into which the our transmitter module is installed must display a

label referring to the enclosed module.

The label should use wording such as “Contains Transmitter module FCC ID: S9N16C2 or “Contains FCC ID:

S9N16C2, any similar wording that expressed the same meaning may be use.

It shows an example below

Contains FCC ID: S9N16C2

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 8/13

Special requirement for Modular application

The following requirements are fulfilled:

1) The modular transmitter must have its own RF shielding:

The RF module fulfils the emission requirements of the FCC rules without additional shielding.

2) The modular transmitter must have buffered modulation/data inputs:

The module has a memory management unit inside of the IC. The processor interfacing with the external application by means

general purpose I/O ( GPIO) , Uart, USB, PCM, I2C, SPI. The processor interfaces also the RF part of the module exchanging

data and commend with it. Inside the processor a flash memory is available to download the customer application and the

Bluetooth profiles.

3) The modular transmitter must have its own power supply regulation:

The module contains an own voltage regulation. In case of changes in the supply voltage VCC (for example caused by

temperature changes or other effects), the internal voltage will be stabilized.

4) The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204:

The RF module is for OEM (Original Equipment Manufacturer) integration only. The end-user product will be professionally

installed in such a manner that only the authorized antenna is used.

5) The modular transmitter must be tested in a stand-alone configuration:

The RF module was tested in a stand-alone configuration.

6) The modular transmitter must be labelled with its own FCC ID number:

The RF module will be labelled with its own FCC ID number. When the module is installed inside the end-product, the label is

not visible. The OEM manufacturer is instructed how to apply the exterior label.

7) The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the

manufacturer must provide adequate instructions along with the module to explain any such requirements:

The EUT is compliant with all applicable FCC rules. Detail instructions are given in the product Users Guide.

8) The modular transmitter must comply with any applicable RF exposure requirements.

- Maximum measured power output: 1,08 mW (0,33 dBm)

- Maximum antenna gain: 1 dBi = numeric gain 1,259 (see also FCC test report)

Maximum permissible exposure defined in 47 CFR 1.1310: 1 mW/cm².

The RF module operates at low power level so it does not exceed the Commission’s RF exposure guidelines limits; furthermore,

Spread spectrum transmitters operate according to the Section 15.247 are categorically excluded from routine environmental

evaluation.

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 9/13

7 - AT COMMANDS APPENDIX

This section is applicable to demoboard with AT command FW downloaded ( GSBT2416C2DB.AT1 )

Purpose of this section is to describe all the necessary steps to establish a connection between two Bluetooth

GS-BT2416C2DB.AT1 demo boards in a Serial line /Cable replacement application.

( This connection example is also reported on OBSTFW-101 datasheet, Application Notes (vers 1.6))

SETUP & CONNECT

To perform the connection you need two PC and two GS-BT2416C2DB.AT1 boards.

Steps to connect.

( please refer to OBSTFW-101v 1.2.1.8 datasheet for the meaning of AT commands)

- Fix a GS-BT2416C2DB.AT1 board to be used as “Client” and suppose it has the address 0080E1000001.

Hereafter this board will be called “Client”

- Fix a GS-BT2416C2DB.AT1 board to be used as “Server” and suppose it has the address 0080E1000002.

Hereafter this board will be called “Server”

- Connect the Server board to a PC by means a RS232 cable

- Connect the Client board to a PC by means a RS232 cable

- Open on both the PCs HyperTerminal program and set the communication line with the following parameters:

o Select the proper COM line ( COM1, COM2……)

o baud rate : 9600 ( default baud rate of GSBT2416C1/AT module)

o data bits: 8

o parity : none

o stop bits : 1

o flow control : none

o In ASCII setup ,set flag line ends with line feed

o In ASCII setup , set flag echo characters typed locally

- Power with the external 5V the Client board : on the PC screen connected to the Client should appear +READY

- Power with the external 5V the Server board : on the PC screen connected to the Server should appear +READY

- Configure the Client board by means the following commands:

( GPIO3 Client must be Low to select Command Mode – S2 switch in Command mode)

Command Answer

AT OK Check module ready

AT+BTCMODE=0 OK

AT+BTPMODE=1 OK

AT+BTDMODE=0 OK Not Discoverable

AT+BTSECMODE=1 OK

AT+BTENCMODE=0 OK

AT+BTNAME=”SPP Client” OK Set client name

AT+BTCLASS=52020C OK

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 10/13

- Configure the Server board by means the following commands:

( GPIO3 Server must be Low to select Command Mode– S2 switch in Command mode )

Command Answer

AT OK Check module ready

AT+BTCMODE=1 OK

AT+BTPMODE=1 OK

AT+BTDMODE=1 OK Discoverable

AT+BTSECMODE=1 OK

AT+BTENCMODE=0 OK

AT+BTPINCODE=”1234” OK Pin code

AT+BTNAME=”SPP Server” OK Set server name

AT+BTCLASS=52020C OK

AT+BTREGPORT=”SPP port” OK Name of service offered

After the Server board configuration , Server board GPIO3 must be put HIGH to select DATA MODE enabling the

Server board to receive and transmit DATA.

- Inquiry & available Services

Before to establish a connection, the Client has to know which Bluetooth devices are present and which services are

offered, and therefore the Client:

- will perform first the inquiry by the command:

AT+BTINQ=xx where xx is the inquiry time (i.e. 10 sec -> AT+BTINQ=10 )

The answer will be a list of present Bluetooth connectable devices, one of the device should be our SPP Server:

+BTINQRES:0080E1000002,”SPP Server”

OK

- and after will ask for which kind of service is available with the command:

AT+BTRPORTS=0080E1000002

The answer will be :

+BTRPORT:”SPP Port”,1 serial port profile , port 1 (can be 1,2…)

OK

- Once known the device present, the service offered, the Client finalize the connection with the command :

AT+BTCONNECT=0080E1000002,1,”1234”,1,0

OK

At this point the connection is established and GPIO1 (indicating the connection status) on both Client and Server

boards becomes high.

On the GS-BT2416C1AT1 board a led is connected to GPIO1 and therefore the connection is shown also by a led on.

GPIO3 on Client board must be now put at HIGH level allowing the Client to send and receive DATA from Server.

- Disconnection

To disconnect, the Client has to put its GPIO3 LOW ( Command mode) ( the changing from high to low on GPIO3 is

signaled on the Client PC screen with +READY) and send the command :

AT+BTDISCONNECT

OK

The result will be the disconnection of the link Client / Server and GPIO1 on both Client and Server boards will return

to low ( the leds will go off ).

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 11/13

MACRO INSTRUCTIONS

With the version 1.2.1.8 of OBSTFW -101 has been introduced the MACRO concept with the commands

AT+BTMACROSTART , AT+BTMACROSTOP and AT+MACROCLEAR.

These commands work in such a way that all the commands written between AT+BTMACROSTART and

AT+BTMACROSTOP commands will be stored inside the internal flash memory and executed at each power up of the

module.

Take note that when you insert a command between MACROSTART and MACROSTOP you have not the immediate

execution of the command but only the storing in the flash memory, the module will answer with OK or ERROR from a

syntax point of view.; execution will be active at the next power on.

That means, after the writing of the commands between the two macro commands, the module could work in a stand

alone way without the need to program it at each power on.

MACROCLEAR command will erase all the commands stored.

As an example: suppose to have always the previous modules with final address 01 (client) and 02 ( server) and to

know already which connection to get .

Write the following sequence of commands in client and server module , after the MACROSTOP command it will be

stored into the internal memory of the correspondent module .

Client Server

AT+BTMACROSTART AT+BTMACROSTART

AT+BTCMODE=0 AT+BTCMODE=1

AT+BTPMODE=1 AT+BTPMODE=1

AT+BTDMODE=0 AT+BTDMODE=1

AT+BTSECMODE=1 AT+BTSECMODE=1

AT+BTENCMODE=0 AT+BTENCMODE=0

AT+BTNAME=”SPP Client” AT+BTPINCODE=”1234”

AT+BTCLASS=52020C AT+BTNAME=”SPP Server”

AT+BTCONNECT=0080E1000002,1,”1234”,10,5 AT+BTCLASS=52020C

AT+BTMACROSTOP AT+BTREGPORT=”SPP port”

AT+BTMACROSTOP

Note that :

- As the address module to connect is know , the inquiry command can be omitted

- In BTCONNECT command has been set 10 retry at 5 sec interval.

After the modules have been programmed, you can power off and power on again the modules themselves; you will

see that at a certain point the modules will be connected each other ( led on) without any intervention .

Is not important to power on before the server or the client ; the only rule to follow is ,once the client has been powered

on, getting the server powered in the time fixed by the 10 retry at 5 sec interval.

During the macro execution the module will answer with “OK or “ERROR” for each command executed; if this

feedback is not wished ,it can be avoided with the AT+ECHO=OFF command.

MODULE BT ADDRESS

Each module has its own address which identify the module itself in the network; for the above examples have been

always taken in consideration addresses 0080E1000001 and 0080E1000002.

Modules on GS-BT2416C1AT1 board could have different addresses ; before to start sending commands, the module

address can be found with the command AT+BTSETTINGS=? which will show the relevant information of the

module including the BT address.

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 12/13

POINT to POINT CONNECTION

Modules with AT commands firmware can only perform point to point connection which means only a connection per

time can be activated.

A module can be connected with several other modules but it has to disconnect the previous connection before to

activate a new one.

Suppose to have a Client C1 which need to connect with Server S1,S2,..Sn :

In this case the procedure to follow is the following :

- C1 will establish the connection with S1 exchanging the data

- C1 will disconnect S1 with the command AT+BTDISCONNECT

- C1 will establish the connection with S2 exchanging the data

- C1 will disconnect S2 with the command AT+BTDISCONNECT

- C1 will establish the connection with Sn exchanging the data… an so on

C1

S1

S2

Sn

GSBT2416C2DB.xxx

rev. 1.0 18-Jun-07 13/13

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of

such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication

or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without

notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical

components in life support devices or systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics

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