Laird DVK-BT730-SA Bedienungsanleitung

Americas: +1-800-492-2320 Option 3 1 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

Quick Start Guide (QSG) – Serial Port Profile

Laird part # DVK-BT730-SA or DVK-BT730-SC

INTRODUCTION

This Quick Start Guide demonstrates using the Serial Port Profile (SPP) role on the DVK-BT730 in four

different scenarios.

REQUIREMENTS

DVK-BT730 including BT730 Carrier Board

BRBLU03-010A0 USB Bluetooth adapter or Computer

with built-in Bluetooth

BT730 development motherboard

Windows XP Operating System or later

Terminal Software such as Laird / EZURiO terminal -

www.lairdtech.com/zips/LairdTerminal_v6_9_0.zip

Laird’s MpBtHost utility (if using MultiPoint

functionality) -

http://www.lairdtech.com/zips/MpBtHost_v3_5_0.zip

RS232 cable or USB-RS232 adaptor

The development kit motherboard’s USB socket provides ONLY power to the module. A RS232 connection is

required to have serial communications with the module on the carrier board. Laird provides a terminal

emulator program called Laird / EZURiO Terminal for AT mode operation but you can use your preferred

terminal emulator program in its place. Another program Laird provides is MpBtHost for multipoint (MP)

mode operation. This example uses the Microsoft Bluetooth stack and software that comes with Windows 7.

If your computer has built-in Bluetooth support, you can modify the computer aspect of the procedure

documented below to match your existing Bluetooth instead of using the supplied BRBLU03-010A0.

PREPARATION

To prepare your setup, follow these steps:

1. Plug in the BT730 Carrier Board to the DVK motherboard.

NOTE: The carrier board plugs into 40-pin Hirose connector as shown in Figure 2.

Figure 2: Carrier board connector

Figure 1: BT730-SA Development Kit

Connector receptacle for

BT730 carrier board

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 2 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

2. Connect RS232/USB-RS232 to the computer and development board.

3. Connect the USB cable to the computer and development board. TP2 is the power switch and there is

an LED for power indication.

4. Install your preferred terminal program. We recommend using Laird / Ezurio Terminal.

5. Install MpBtHost, if utilising MP mode.

6. Open your terminal program and select the COM port that the RS232 / USB RS232 Adapter shows

(9600 8N1)

7. Check communications by sending

and then return. This should return

8. Send the following commands to set up the module, as shown in Figure 3:

ATS538=1

Auto save link key if pairing is successful

ATS512=4

Put the module in discoverable and connectable mode

ATS0=1

Auto answer in 1 second

AT+BTK=”1234”

Legacy pairing code

AT&W

Store new S Register settings

ATZ

Reboot the module, so settings become effective

Figure 3: Module setup

EXCHANGE SERIAL DATA WITH A WINDOWS 7COMPUTER

EQUIPPED WITH A BRBLU03-010A0 USB BLUETOOTH DONGLE

The section details serial data exchange between the BT730 and a PC equipped with a BRBLU03-010A0 USB

Bluetooth dongle. This communication is illustrated in Figure 4.

Figure 4: Serial data exchange

Hardware and Software Installation

To install the BLBLU03-0101A0 on your Windows PC, complete the following steps:

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 3 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

1. If your PC has a built-in Bluetooth module, disable it. To do so, locate it in the Windows Device

Manager, right-click the device, and click Disable.

2. Plug the BRBLU03-010A0 into your computer. Windows 7 automatically detects the device and installs

the required drivers. No driver downloads are required.

3. Once installed, check the Windows Device Manager (Figure 5 ). Note the presence of the Microsoft

Bluetooth Enumerator and TDK Bluetooth USB Adaptor. These indicate a successful installation.

Figure 5: Windows Device Manager

Discovery and Pairing

The DVK-BT730 is now ready to be discovered by the PC. To initiate this process, follow these steps:

1. Click Start > Devices and Printers.

2. Click Add a device.

The DVK-BT730 appears (in this case as Laird 00157B) (Figure 6). If you cannot identify the correct

device, refer to the ATI4 command in Preparation.

3. Select the device and click Next.

Figure 6: Add a Device window

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 4 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

4. Select Enter the device’s pairing code (Figure 7). This was set to “1234” via AT+BTK=”1234” in the

Preparation.

Figure 7: Enter the device's pairing code

A successful pairing is indicated by a “PAIR 0 <remote device address>” message in the terminal program

connected to the module (Figure 8).

Figure 8: Device successfully added

Windows now displays the COM ports assigned for use with the DVK-BT730 (Figure 9).

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 5 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

Figure 9: COM ports displayed

Connecting from PC to Module

To connect to the DVK-BT730 from the PC, open a second instance of Laird / EZURiO terminal using the

outgoing computer COM port (COM43) noted in the previous step.

In the example below, the first Laird / EZURiO Terminal is connected to the module (COM16) and the second

Laird / EZURiO Terminal is connected to virtual COM 43 on the PC. When the second Laird / EZURiO terminal

(COM43) is opened, the connection is made and you should see a RING message followed by a CONNECT

message from the module (Figure 10).

The 12 characters following the RING and CONNECT messages are the Bluetooth address of the remote

device. The four characters following the BT address indicate the UUID, where 1101 is serial port profile.

Figure 10: Connection made

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 6 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

A transparent data connection is now present. Any text entered into one Laird / EZURiO Terminal appears in

the other terminal having been transmitted over the Bluetooth link between the DVK-BT730 modules and the

PC. Note the status of the DCD during a connection (Figure 11).

Figure 11: Transparent data connection present

The connection can be dropped by typing ^^^ into the module terminal window on COM16. This appears in

the computer terminal window but is interpreted as a command to enter local command mode. Once in local

command mode, OK displays and you may issue ATH to drop the connection; at this point, NO CARRIER

displays (Figure 12).

Figure 12: Connection dropped

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 7 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

EXCHANGE SERIAL DATA WITH A WINDOWS 7COMPUTER

(EQUIPPED WITH A BUILT IN BLUETOOTH MODULE)

Figure 13: Serial data exchange with Windows 7 computer

The customer can confirm if the computer is equipped with a built-in Bluetooth module by checking

Windows Device Manager (Figure 14).

Figure 14: Windows Device Manager

Discovery and Pairing

The DVK-BT730 is now ready to be discovered by the computer.

To discover and pair the DVK-BT730, follow these steps:

1. Open Device and Printers.

2. Click Add a device. The DVK-BT730 should now appear, in this case as Laird 00157B (Figure 15). If you

cannot identify the correct device, refer to the ATI4 command from the module setup (Figure 3).

Figure 15: Add a device

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 8 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

3. Select the device and click Next.

4. Select Enter the device’s pairing code (Figure 16). This code was set to “1234” using the command

AT+BTK=”1234” in Preparation.

Figure 16: Select Enter the device's pairing code

A successful pairing is indicated by a “PAIR 0 <remote device address>” message in the terminal program

connected to the module (Figure 17).

Figure 17: Successful pairing indicated

Windows displays the COM ports assigned for use with the DVK-BT730 (Figure 18).

Figure 18: COM ports displayed

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 9 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

Connecting from Module to PC

To connect from the DVK-BT730 to the PC, open a second instance of Laird / EZURiO terminal using the

incoming computer COM port (COM32) noted in the previous step. In the example below, the first Laird /

EZURiO Terminal is connected to COM40 as an incoming port on PC and the second Laird / EZURiO Terminal

is connected to the module on COM 16.

The virtual incoming COM port (COM32) is waiting for an incoming connection, as the DCD indication is

deserted (Figure 19).

Figure 19: Virtual incoming COM32 port

When ATD<Computer BT MAC address> is issued to the module, a SPP connection is initiated (Figure 20).

The 12 characters following the CONNECT message are the Bluetooth address of the PC BT module. The four

characters following the BT address indicate the UUID, where 1101 is Serial Port Profile.

Figure 20: SPP connection initiated

A transparent data connection is now present. Any text entered into one Laird / EZURiO Terminal appears in

the other having been transmitted over the Bluetooth link between the DVK-BT730 modules and the PC.

Note the status of the DCD during a connection (Figure 21).

Figure 21: Transparent data connection

DVK-BT730 Development Kit

Quick Start Guide - SPP

Americas: +1-800-492-2320 Option 2 10 Laird Technologies

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

www.lairdtech.com/bluetooth

The connection can be dropped by typing ^^^ into the module terminal window. This appears in the

computer terminal window but is interpreted as a command to enter local command mode. Once in local

command mode, OK displays and you may issue ATH to drop the connection; at this point, NO CARRIER

displays (Figure 22).

Figure 22: Connection dropped

EXCHANGE SERIAL DATA WITH AN ANDROID PHONE

To create an SPP connection to the module, we use the BlueTerm application available from the Play Store.

Discovery and Pairing

The DVK-BT730 is now ready to be discovered by the Android phone. To do this, follow these steps:

1. From the BlueTerm application, click Menu and select Connect device.

2. Click Scan for devices. The BTM731 should appear in the list.

3. Select the applicable device and enter 1234 as the pairing code.

These steps are illustrated in Figure 23.

Figure 23: Discovery using an Android phone

Connecting

Once pairing is successful, a SPP connection is initiated automatically from phone to module (Figure 24).

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