Laird BT830 Quick setup guide

Laird BT830 Development Kit
Part #DVK-BT830-SA, DVK-BT830-ST
HARDWARE INTEGRATION GUIDE
VERSION 1.0
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REVISION HISTORY
Version
Revision Date
Change History
1.0
-
Initial Release

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CONTENTS
1Overview .................................................................................................................................................................. 4
2Introduction.............................................................................................................................................................. 4
2.1 Package Contents ............................................................................................................................................. 4
2.2 DVK-BT830 –Main Development Board ............................................................................................................ 4
3Getting to Know the Development Board.................................................................................................................. 5
4Power Supply............................................................................................................................................................ 5
5Interface Specification............................................................................................................................................... 6
5.1 PIOs (PIN HEADER –J12).................................................................................................................................... 6
5.2 PCM/I2S/SPI (PIN HEADER –J11)......................................................................................................................... 6
5.3 4-Wire UART Serial Interface.............................................................................................................................. 7
5.3.1 UART Interface Driven by USB ................................................................................................................ 8
5.3.2 Pin Header J10....................................................................................................................................... 8
5.4 Operating Voltage Selection and Push Button.................................................................................................... 9
6Other Features.......................................................................................................................................................... 9
6.1 Current Consumption Measurement ................................................................................................................. 9
7Additional Documentation ...................................................................................................................................... 10

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1OVERVIEW
Laird’s Development Kit (DVK-BT830) provides a platform for rapid prototyping of BT830 series modules. The development
board provides simple, easy to use access to the various hardware interfaces and configuration options for the module. The
DVK is the perfect platform to provide for early development testing of the BT830 series features and functionality, prior to
designing the module onto a host PCB.
This manual is for the development PCB which is DVK-BT830 R1.0 on PCB.
2INTRODUCTION
The Laird DVK-BT830 is designed to support the rapid development of applications and evaluation for the specific Laird
Bluetooth module part number BT830. In-depth documentation for this product is available from the BT830 series product
pages: www.lairdtech.com/Products/Embedded-Wireless-Solutions/Bluetooth-Radio-Modules/BT830-Series/
2.1 Package Contents
Each DVK-BT830 includes the following items:
Development motherboard
The motherboard has the BT830 module already soldered down onto it and all of the
available hardware interfaces are exposed.
USB cable –USB A type male TO
Mini-B type
The USB cable can be used to power, control, and configure the BT830.
Stand-off
Screw nuts x 4 pcs ; Stand-off x 4 pcs
Pin Header Fly Leads
6 leads for easy prototyping into host board
Insert card
Provides links to additional information including BT830 User Manual, Utilities,
Schematics, and Quick Start Guides.
External Antenna
Only supplied with DVK-BT830-ST. Antenna supplied is Laird part # 0600-00040.
2.2 DVK-BT830 –Main Development Board
The development board allows the BT830 module to be easily connected to a PC. The development board provides USB to
UART converter linking to USB connector and the BT830 UART HCI interface. Any Windows PC (Windows 8 or later)
auto-installs the necessary drivers and if your PC can not locate the drivers, you can download them from
http://www.ftdichip.com/Products/FT232R.htm.

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3GETTING TO KNOW THE DEVELOPMENT BOARD
Figure 1: Main DVK-BT830 Board
4POWER SUPPLY
Table 1: Input voltage
Minimum
Typical
Maximum
Input Voltage
4.5V
5V
5.5V
Power supply options for powering development board from:
USB
External DC supply
The DVK-BT830 includes a USB cable to provide power to the development board. This should be plugged into a PC USB
port, a USB hub, or a main adaptor with a USB output. If a hub is used, it should be a powered USB hub to ensure that
sufficient current is available at the port. The BT830 module can be driven by the available current at a USB port.
The low noise LDO (U11) on the DVK-BT830 provides the 1.8V out to support the operating voltage configuration.
PIO(2)
PIO(3)

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5INTERFACE SPECIFICATION
5.1 PIOs (PIN HEADER –J12)
There are five PIO signals (PIO[0;1;2;4;9]) presented on pin header J12. These can be used for an LED indicator or Wi-Fi and
BT coexistence. The default setting on BT830 is to support Wi-Fi and BT coexistence.
Further details on configuring the BT830 module for WLAN coexistence and LED status are available in the following
application note:
BT830 Configuration File
The oscillator Y1 provides a 32.768 kHz clock for deep sleep and other low-power modes.
The pin descriptions of J12 are shown in Table 2.
Table 2: J12 pin descriptions
J12
Description
Direction
Pin-1
PIO[2]
I/O
Pin-2
PIO[0]/32K_CLK_IN
I/O
Pin-3
PIO[1]/BT_ACTIVE
I/O
Pin-4
PIO[4]/WLAN_ACTIVE
I/O
Pin-5
PIO[9]/BT_PRIORITY
I/O
Pin-6
GND
Turn off the external 32 kHz oscillator by fitting a jumper on CON26.
There are two LED indicators on the DVK-BT830. LED2 is connected to BT_PRIORITY/PIO[9]; LED3 is connected to
WLAN_ACTIVE/PIO[4]. With default Pskey settings, the co-existence scheme is set to disable.
Figure 2: Pin Headers - J12 and CON26
You can configure the PIO for other applications such as LED indicators for different connection stages (innquiry,
connection, and transmission). For more information for PIO PSkey settings, visit the BT830 page and :
www.lairdtech.com/Products/Embedded-Wireless-Solutions/Bluetooth-Radio-Modules/BT830-Series/
5.2 PCM/I2S/SPI (PIN HEADER –J11)
The DVK-BT830 has a 4-wire digital audio port capable of operating in PCM or I2S mode. The port also provides a debug SPI
interface to the BT830 for use during test and development. Select between SPI and PCM using the PCM/SPI slide switch
SW5 (Figure 3).

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The pin descriptions of J11 in PCM/I2S or SPI mode are shown in Table 3.
Table 3: J11 Descriptions
J11
Description (PCM/I2S/SPI)
Direction
Pin-1
PIO[3]
I/O
Pin-2
PCM_SYNC/ WS/SPI_CS#
I/O
Pin-3
PCM_CLK/SCK/SPI_CLK
I/O
Pin-4
PCM_IN/SD_IN/SPI_MOSI
Input
Pin-5
PCM_OUT/ SD_OUT/SPI_MISO
Output
Pin-6
GND
The PIO[3] can send a wakeup signal depending on the PSkey setting.
For more information on PCM/I2S or SPI setting, please reference to document in Documentation tab at:
www.lairdtech.com/Products/Embedded-Wireless-Solutions/Bluetooth-Radio-Modules/BT830-Series/
Figure 3: Pin Headers - J11 and SW5
5.3 4-Wire UART Serial Interface
The DVK-BT830 provides access to the HCI interface of BT830 module through pin header J12 (Figure 4) OR through USB
(via U9 FTDI USB-UART convertor chip). The default is USB.
Figure 4: Pin Header J10

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5.3.1 UART Interface Driven by USB
USB Connector. The development kit provides a USB Type mini-B connector (CON4) which allows connection to any
USB host device. The connector optionally supplies power to the DVK-BT830 when SW4 is set to the USB position.
The USB signals are connected to a USB to serial convertor device (FT232R) (Figure 5).
USB –UART. The development kit is fitted with a (U9) FTDI FT232R USB to UART converter which provides
USB-to-Virtual COM port on any Windows PC (Win 7 or later). Upon connection, Windows auto-installs the required
drivers. For more details and driver downloads, visit http://www.ftdichip.com/Products/FT232R.htm.
UART interface driven by USB FTDI chip. In normal operation, the BT830 HCI interface is driven by the FTDI FT232R
USB to UART converter.
Note: Before using the 4-wire UART through J10, place the jumper on CON2 to disable the function of FT232R.
Figure 5: USB Connector (CON4) , FT232R (U9) , SW4 , and CON2
5.3.2 Pin Header J10
The pins of header J10 are detailed in Table 4.
Table 4: J10 Descriptions
J10
Description (PCM/I2S/SPI)
Direction
Pin 1
GND
Pin 2
Module_RTS
Output
Pin 3
NA
Pin 4
Module_RX
Input
Pin 5
Module_TX
Output
Pin 6
Module_CTS
Input
Note: For a 3-wire interface, you can leave RTS/CTS floating.
You can use TX/RX and GND pin to access the module.

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5.4 Operating Voltage Selection and Push Button
Switch CON17 on the DVK-BT830 is used to toggle the operating voltage between 1.8V and 3.3V. This allows you to select
a suitable I/O signal voltage level when the DVK-BT830 is connected to your platform.
SW2 (push button TACT switch) provides a reset signal to reset the BT830 module (Figure 6).
Push Button
Label on DVK-BT830 PCB
Description
SW2
Reset
Reset the BT830 module
Figure 6: CON17 and SW2
6OTHER FEATURES
6.1 Current Consumption Measurement
A removable jumper (CON1) is provided to break the power supply line directly to the module (if SB9 is cut), allowing you to
measure current consumption. For normal operation, CON1 must be fitted. Figure 7 shows the locations of SB9 and CON1.
Note: This measures the current consumption of the BT830 series module only.
Figure 7: Current measurement circuit
To prepare the board for current measurement, cut the shorting of the solder bridge SB9. After this modification there are
two primary ways to measure the current consumption:
Using Ammeter –Connect an ampere meter between the two pins of connector CON1. This monitors the current
directly.

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Using Oscilloscope (Note) –Mount a resistor on the footprint R28. The resistor should not be larger than 10 Ohm.
Connect an oscilloscope or similar with two probes on the pin on the CON1 connector and measure the voltage drop.
The voltage drop is proportional with current consumption. If a 1 Ohm resistor is chosen, 1 mV equals 1mA.
There is also a third way to measure current:
Using Current Shunt Monitor –The current drawn by the BT830 module can be monitored using the Current Shunt
Monitor (CSM), INA216 (U8). The gain of INA216 is 200 V/V for lowest possible drop voltage.
Note: The Current Shunt Monitor method allows the dynamic current consumption waveforms on oscilloscope as
the BT830 radio operates. This can provide insight into power optimization.
Current consumed by the BT830 series module is measured as a voltage (that is proportional to the current) using the CSM
by connecting measuring voltmeter OR oscilloscope to TP14 Connect measuring voltmeter or oscilloscope GND to TP15.
I(mA) = Vmeas_TP14(mV) /51
CAUTION: Take care not to short TP14 (the Current Shunt Monitor IC (U8)) output to GND, as that will permanently
damage the IC U8.
7ADDITIONAL DOCUMENTATION
Laird offers a variety of documentation and ancillary information to support our customers through the initial evaluation
process and ultimately into mass production. Additional documentation includes:
BT830 –Class 1 BT4.0 Dual Mode HCI module –Product brief
BT830 HIG - Hardware Integration Guide
BT830 UART HCI Bluetooth Module for Linux –Application Note –Using the BT830 with the BlueZ Linux BCCMD tool
BT830 UART HCI Module for Big Windows –Application Note –Using the BT830 with the CSR BtCLI tool
BT830 Configuration File –Application Note
BT830 Software Integration Guide
For any additional questions or queries or to receive local technical support for the DVK-BT830 or BT830 module, please visit
our support site at https://laird-ews-support.desk.com/.