ST BlueNRG User manual

December 2015 DocID025464 Rev 5 1/70
70
UM1686
User manual
BlueNRG development kits
Introduction
This document describes the BlueNRG development kits and related hardware and
software components. The BlueNRG is a very low power Bluetooth
®
low energy (BLE)
single-mode network processor, compliant with Bluetooth specifications core 4.0. The
BlueNRG can act as master or slave.
There are two types of BlueNRG kits:
1. BlueNRG development platform (order code: STEVAL-IDB002V1)
2. BlueNRG USB dongle (order code: STEVAL-IDB003V1)
The BlueNRG software package includes a graphical user interface application to control
the BlueNRG through a simple ACI protocol.
www.st.com

Contents UM1686
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Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 STEVAL-IDB002V1 kit contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 STEVAL-IDB003V1 kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 BlueNRG development kit setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 STEVAL-IDB002V1 motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1 Microcontroller and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.3 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.4 Extension connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.5 Push-buttons and joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.6 JTAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.7 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.8 Daughterboard interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 BlueNRG daughterboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Current measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.2 Hardware setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.3 STM32L preprogrammed application . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 STEVAL-IDB003V1 USB dongle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3.1 Microcontroller and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3.2 SWD interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3.3 RF connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.3.4 Push-buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3.5 User LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3.6 Hardware setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3.7 STM32L preprogrammed application . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3 GUI software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 The BlueNRG graphical user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.1 GUI main window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.2 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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3.2.3 GUI ACI utilities window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.4 GUI Scripts window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.2.5 GUI Beacon window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2.6 GUI RF Test window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4 Programming with BlueNRG network processor . . . . . . . . . . . . . . . . . 41
4.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.2 Software directory structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5 BlueNRG sensor profile demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.2 BlueNRG app for smartphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.3 BlueNRG sensor profile demo: connection with a central device . . . . . . . 45
5.3.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.3.2 Add service and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.3.3 Set security requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.4 Enter connectable mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.5 Connection with central device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.4 BlueNRG sensor demo: central profile role . . . . . . . . . . . . . . . . . . . . . . . 47
5.4.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.4.2 Discovery a sensor peripheral device . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.4.3 Connect to discovered sensor peripheral device . . . . . . . . . . . . . . . . . . 48
5.4.4 Discovery sensor peripheral services and characteristics . . . . . . . . . . . 48
5.4.5 Enable sensor peripheral acceleration and free fall notifications . . . . . . 49
5.4.6 Read the sensor peripheral temperature sensor characteristic . . . . . . . 49
6 BlueNRG chat demo application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.2 BlueNRG chat demo application: peripheral & central devices . . . . . . . . 50
6.2.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.2.2 Add service and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.2.3 Set security requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.2.4 Enter connectable mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.2.5 Connection with central device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7 BlueNRG Beacon demonstration application . . . . . . . . . . . . . . . . . . . . 54
7.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

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7.2 BLE Beacon application setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.2.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.2.2 Define advertising data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.2.3 Entering non-connectable mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8 BLE remote control demo application . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.2 BLE remote control application setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2.2 Define advertising data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2.3 Add service and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2.4 Connection with a BLE Central device . . . . . . . . . . . . . . . . . . . . . . . . . 58
9 List of acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
10 Available board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

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1 Getting started
This section describes all the software and hardware requirements for running the BlueNRG
GUI utility as well as the related installation procedure.
1.1 STEVAL-IDB002V1 kit contents
This kit is composed of the following items:
•1 development motherboard
•1 BlueNRG daughterboard
•1 2.4 GHz Bluetooth antenna
•1 USB cable
Figure 1. BlueNRG kit motherboard with the STEVAL-IDB002V1 daughterboard
connected
1.2 STEVAL-IDB003V1 kit
This kit is composed of the following items:
•1 USB dongle

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Figure 2. STEVAL-IDB003V1 BlueNRG USB dongle
1.3 System requirements
The BlueNRG graphical user interface utility has the following minimum requirements:
•PC with Intel
®
or AMD
®
processor running one of the following Microsoft
®
operating
systems:
– Windows XP SP3
– Windows Vista
– Windows 7
•At least 128 Mb of RAM
•2 USB ports
•40 Mb of hard disk space available
•Adobe Acrobat Reader 6.0 or later
1.4 BlueNRG development kit setup
•Extract the content of the BlueNRG_DK_-x.x.x-Setup.zip file into a temporary directory.
•Launch the BlueNRG-DK-x.x.x-Setup.exe file and follow the on-screen instructions.
Note: EWARM Compiler 7.40.3 or later version is required for building the BlueNRG_DK_x.x.x
demonstration applications.

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2 Hardware description
The following sections describe the components of the kits.
2.1 STEVAL-IDB002V1 motherboard
The motherboard included in the development kit allows testing of the functionality of the
BlueNRG processor. The board can be used as a simple interface between the BlueNRG
and a GUI application on the PC. The STM32L microcontroller on the board can also be
programmed, so the board can be used to develop applications using the BlueNRG. A
connector on the motherboard (Figure 1) allows access to the JTAG interface for
programming and debugging. The board can be powered through a mini-USB connector
that can also be used for I/O interaction with a USB Host. The board includes sensors, and
buttons and a joystick for user interaction. The RF daughterboard can be easily connected
through a dedicated interface.
This is a list of some of the features that are available on the boards:
•STM32L151RBT6 64-pin microcontroller
•Mini USB connector for power supply and I/O
•JTAG connector
•RF daughterboard interface
•One RESET button and one USER button
•One LIS3DH accelerometer
•One STLM75 temperature sensor
•One joystick
•5 LEDs
•One PWR LED
•One battery holder for 2 AAA batteries
•One row of test points on the interface to the RF daughterboard

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Figure 3. Motherboard for the BlueNRG development kit
2.1.1 Microcontroller and connections
The board features an STM32L151RB microcontroller, which is an ultra low-power
microcontroller with 128 KB of Flash memory, 16 KB of RAM, 32-bit core ARM cortex-M3, 4
KB of data EEPROM, RTC, LCD, timers, USART, I
2
C, SPI, ADC, DAC and comparators.
The microcontroller is connected to various components such as buttons, LEDs and
connectors for external circuitry. The following table shows what functionality is available on
each microcontroller pin.
Table 1. MCU pin description versus board function
Pin
name Pin
Board function
LEDs DB connector Buttons /
joystick Acceler. Temperatur e sensor USB JTAG Ext. conn
VLCD 1
PC13 2 DB_SDN_RST
PC14 3 3
PC15 4 5
OSC_IN 5
OSC_O
UT 6
NRST 7 RESET 7
PC0 8 LED1
PC1 9 LED2
PC2 10 DB_PIN3
PC3 11 9

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VSSA 12
VDDA 13
PA0 14 11
PA1 15 13
PA2 16 15
PA3 17 17
VSS_4 18
VDD_4 19
PA4 20 SPI1_NSS
PA5 21 SPI1_SCK
PA6 22 SPI1_MISO
PA7 23 SPI1_MOSI
PC4 24 LED4
PC5 25 LED5
PB0 26 JOY_DOW
N
PB1 27 JOY_RIGH
T
PB2 28 18
PB10 29 INT1
PB11 30 INT2
VSS_1 31
VDD_1 32
PB12 33 DB_CSN
(1)
PB13 34 DB_SCLK
(1)
PB14 35 DB_SDO
(1)
PB15 36 DB_SDI
(1)
PC6 37 PUSH_BT
N
PC7 38 DB_IO0
(1)
PC8 39 DB_IO1
(1)
PC9 40 DB_IO2
(1)
PA8 41 JOY_LEFT
PA9 42 JOY_CENT
ER
Table 1. MCU pin description versus board function (continued)
Pin
name Pin
Board function
LEDs DB connector Buttons /
joystick Acceler. Temperatur e sensor USB JTAG Ext. conn

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2.1.2 Power
The board can be powered either by the mini USB connector CN1 (A in Figure 3) or by 2
AAA batteries. To power the board through USB bus, jumper JP1 must be in position 1-2, as
in Figure 3 (B). To power the board using batteries, 2 AAA batteries must be inserted in the
battery holder at the rear of the board, and jumper JP1 set to position 2-3.
When the board is powered, the green LED DL6 is on (C).
If needed, the board can be powered by an external DC power supply. Connect the positive
output of the power supply to the central pin of JP1 (pin 2) and ground to one of the four test
point connectors on the motherboard (TP1, TP2, TP3 and TP4).
PA10 43 JOY_UP
PA11 44 USB_D
M
PA12 45 USB_D
P
PA13 46 JTMS 16
VSS_2 47
VDD_2 48
PA14 49 JTCK 14
PA15 50 JTDI 12
PC10 51 DB_IO3_IRQ
(1)
PC11 52 DB_PIN1
PC12 53 DB_PIN2
PD2 54 LED3
PB3 55 JTDO 10
PB4 56 JNTRS
T8
PB5 57 TSEN_INT
PB6 58 I2C1_SCL
PB7 59 I2C1_SDA
BOOT0 60
PB8 61 4
PB9 62 6
VSS_3 63
VDD_3 64
1. These lines are also available on the test point row
Table 1. MCU pin description versus board function (continued)
Pin
name Pin
Board function
LEDs DB connector Buttons /
joystick Acceler. Temperatur e sensor USB JTAG Ext. conn

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2.1.3 Sensors
Two sensors are available on the motherboard:
– LIS3DH, an ultra-low power high performance three-axis linear accelerometer (D
in Figure 3). The sensor is connected to the STM32L through the SPI interface.
Two lines for interrupts are also connected.
– STLM75, a high precision digital CMOS temperature sensor, with I
2
C interface (E
in Figure 3). The pin for the alarm function is connected to one of the STM32L
GPIOs.
2.1.4 Extension connector
There is the possibility to solder a connector on the motherboard to extend its functionality
(F in Figure 3). 16 pins of the microcontroller are connected to this expansion slot (Table 1).
2.1.5 Push-buttons and joystick
For user interaction the board has two buttons. One is to reset the microcontroller, while the
other is available to the application. There is also a digital joystick with 4 possible positions
(left, right, up, down) (G in Figure 3).
2.1.6 JTAG connector
A JTAG connector on the board (H in Figure 3) allows the programming and debugging of
the STM32L microcontroller on board
(a)
, using an in-circuit debugger and programmer such
as the ST-LINK/V2.
2.1.7 LEDs
Five LEDs are available (I in Figure 3).
– DL1: green
– DL2: orange
– DL3: red
– DL4: blue
– DL5: yellow
2.1.8 Daughterboard interface
The main feature of the motherboard is the capability to control an external board,
connected to the J4 and J5 connectors (L in Figure 3). Table 1 shows which pins of the
microcontroller are connected to the daughterboard.
Some of the lines are connected also to a row of test points (M).
a. The STM32L is preprogrammed with a DFU firmware that allows the downloading of a firmware image without
the use of a programmer. If an user accidentally erases DFU firmware, he can reprogram it through STLink
using the hex image DFU_Bootloader.hex available on BlueNRG DK SW package, firmware folder.

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2.2 BlueNRG daughterboard
The BlueNRG daughterboard (Figure 4) included in the development kit is a small circuit
board to be connected to the main board. It contains the BlueNRG network processor (in a
QFN32 package), an SMA antenna connector, discrete passive components for RF
matching and balun, and small number of additional components required by the BlueNRG
for proper operation (see the schematic diagram in Figure 24).
Figure 4. BlueNRG daughterboard
The main features of the BlueNRG daughterboard are:
– BlueNRG low power network processor for Bluetooth low energy (BLE), with
embedded host stack
– High frequency 16 MHz crystal
– Low frequency 32 kHz crystal for the lowest power consumption
– Balun, matching network and harmonic filter
– SMA connector
The daughterboard is also equipped with a discrete inductor for the integrated high-
efficiency DC-DC converter, for best-in-class power consumption. It is still possible to
disable the DC-DC converter. In this case the following changes must be performed on the
daughterboard (see Figure 24):
– Remove inductor from solder pads 1 and 2 of D1
– Place a 0 ohm resistor between pads 1 and 3
– Move resistor on R2 to R1
For proper operation, jumpers must be set as indicated in Figure 4.
The following tables show the connections between the daughterboard and the main board.

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2.2.1 Current measurements
To monitor power consumption of the entire BlueNRG daughterboard, remove the jumper
from U2 and insert an ammeter between pins 1 and 2 of the connector. Since power
consumption of the BlueNRG during most operation time is very low, an accurate instrument
in the range of few microamps may be required.
2.2.2 Hardware setup
1. Plug the BlueNRG daughterboard into J4 and J5 connectors as in Figure 1.
2. Ensure the jumper configuration on the daughterboard is as in Figure 1
3. Connect the motherboard to the PC with an USB cable (through connector CN1).
4. Verify the PWR LED lights is on.
Table 2. Connections between BlueNRG board and motherboard on left connector
Pin J4 motherboard J3 daughterboard
1 DB_PIN1 NC
2 3V3 3V3
3 DB_PIN3 NC
4 NC NC
5 GND GND
6 DB_PIN2 nS
7 GND GND
8 3V3 U2 pin 1
9 DB_SDN_RST RST
10 3V3 U2 pin 1
Table 3. Connections between BlueNRG board and motherboard on right connector
Pin J5 motherboard J4 daughterboard
1 GND GND
2 GND GND
3 DB_CSN CSN
4 DB_IO3_IRQ IRQ
5 DB_SCLK CLK
6 DB_IO2 NC
7 DB_SDI MOSI
8 DB_IO1 NC
9 DB_SDO MISO
10 DB_IO0 NC

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2.2.3 STM32L preprogrammed application
The STM32L on STEVAL-IDB002V1 motherboard is preprogrammed with the sensor demo
application when the kits components are assembled (refer to Section 5 for the application
description).
2.3 STEVAL-IDB003V1 USB dongle
The BlueNRG USB dongle allows users to easily add BLE functionalities to their PC by
plugging it into a USB port. The USB dongle can be used as a simple interface between the
BlueNRG and a GUI application on the PC. The on-board STM32L microcontroller can also
be programmed, so the board can be used to develop applications that use the BlueNRG.
The board can be powered through the USB connector, which can also be used for I/O
interaction with a USB host. The board also has two buttons and two LEDs for user
interaction.
Below is a list of some of the main features that are available on the board (see Figure 2):
•BlueNRG network coprocessor
•STM32L151CBU6 48-pin microcontroller
•USB connector for power supply and I/O
•One row of pins with SWD interface
•Chip antenna
•Two user buttons (SW1, SW2)
•Two LEDs (D2, D3)
2.3.1 Microcontroller and connections
The board utilizes an STM32L151CBU6, which is an ultra low-power microcontroller with
128 KB of Flash memory, 16 KB of RAM, 32-bit core ARM cortex-M3, 4 KB of data
EEPROM, RTC, timers, USART, I
2
C, SPI, ADC, DAC and comparators.
The microcontroller is connected to various components such as buttons, LEDs and
connectors for external circuitry. The following table shows which functionality is available
on each microcontroller pin.

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Table 4. MCU pin description versus board function
Pin name Pin
num.
Board function
LEDs BlueNRG Buttons USB SWD
VLCD 1 VBAT
PC13 2
PC14 3
PC15 4
OSC_IN 5
OSC_OUT 6
NRST 7
VSS_A 8
VDD_A 9
PA0 10
PA1 11 Button SW2
PA2 12
PA3 13
PA4 14
PA5 15
PA6 16
PA7 17
PB0 18 Led D2
PB1 19 Led D3
PB2 20 Button SW1
PB10 21 BlueNRG_IRQ
PB11 22
VSS1 23
VDD1 24
PB12 25 SPI2_CS
PB13 26 SPI2_CLK
PB14 27 SPI2_MISO
PB15 28 SPI2_MOSI
PA8 29
PA9 30 EEPROM_CS
PA10 31
PA11 32 USB_DM

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2.3.2 SWD interface
The SWD interface is available through the J2 pins. The SWD interface allows programming
and debugging of the STM32L microcontroller on the board, using an in-circuit debugger
and programmer like the ST-LINK/V2. In Figure 5 the connection scheme illustrating how to
connect the ST-LINK/V2 with the board pins is shown.
Figure 5. SWD connection scheme with ST-LINK/V2
PA12 33 USB_DP
PA13 34 SWDIO
VSS2 35
VDD2 36
PA14 37 SWCLK
PA15 38
PB3 39 SWO
PB4 40
PB5 41
PB6 42
PB7 43
BOOT0 44
PB8 45
PB9 46
VSS_3 47
VDD_4 48
Table 4. MCU pin description versus board function (continued)
Pin name Pin
num.
Board function
LEDs BlueNRG Buttons USB SWD

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UM1686 Hardware description
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The signals available on the STEVAL-IDB003V1 are:
1. GND
2. VDD
3. nRESET
4. SWDIO
5. SWO/TRACE
6. SWCLK
The connection to the ST-LINK/V2 interface is given in the table below, as shown in
Figure 5:
2.3.3 RF connector
The STEVAL-IDB003V1 provides two different RF connections: antenna (chip antenna,
default configuration) and UFL connector. Although the default configuration allows
communication on air, it can be useful to switch to the UFL connector in order to connect the
STEVAL-IDB003V1 to RF equipment such as a spectrum analyzer or RF signal generator.
To switch from antenna to UFL connector, capacitor C10 must be removed and capacitor
C42 must be soldered. To restore the default configuration and use the antenna, capacitor
C42 must be removed and capacitor C10 must be soldered. Both capacitors C10 and C42
have the same value: 56 pF. In Figure 6, the two pads for C10 and C42 are shown together
with the chip antenna and UFL connector.
Figure 6. RF connector scheme
Table 5. SWD connection
Signal name STEVAL-IDS001Vx
pin number ST-LINK/V2 pin number
GND 1 14 /6
VDD 2 2 / 1
nRESET 3 15
SWDIO 4 7
SWO/TRACE 5 13
SWCLK 6 9

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2.3.4 Push-buttons
For user interaction the board has two buttons, both available to the application
– SW1
– SW2
Note: SW1 is the DFU button. The BlueNRG USB dongle is preprogrammed with a DFU
application allowing upgrades to the STM32L firmware image through USB and using the
BlueNRG GUI. To activate the DFU, press button SW1 and plug the BlueNRG USB dongle
into a PC USB port.
2.3.5 User LEDs
Two LEDs are available:
– D2: red
– D3: orange
Note: When DFU is activated, LED D3 is blinking
2.3.6 Hardware setup
Plug the BlueNRG USB dongle into a PC USB port.
2.3.7 STM32L preprogrammed application
The STM32L on the STEVAL-IDB003V1 motherboard is preprogrammed with the
BlueNRG_VCOM_x_x.hex application when the kits components are assembled (refer to
Section 3.1 for the application description).

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UM1686 GUI software description
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3 GUI software description
The BlueNRG GUI included in the software package is a graphical user interface that can be
used to interact and evaluate the capabilities of the BlueNRG network processor.
This utility can send standard and vendor-specific HCI commands to the controller and
receive events from it. It lets the user configure each field of the HCI command packets to
be sent and analyzes all received packets. In this way BlueNRG can be easily managed at
low level.
3.1 Requirements
In order to use the BlueNRG GUI, make sure you have correctly set up your hardware and
software (BlueNRG GUI installed). The STM32L in the STEVAL-IDB002V1 kit has been
preprogrammed with a demo application (see Section 5). Hence, new firmware must be
loaded into the STM32L. Firmware images can be found within the firmware folder. The
firmware image that must be programmed is latest BlueNRG_VCOM_x_x.hex available
within the BlueNRG DK SW package. The GUI has the ability to Flash new firmware.
In order to download binary images into the internal Flash of the STM32L, the
microcontroller must be put into a special DFU (device firmware upgrade) mode. To enter
DFU mode:
1. BlueNRG development platform (STEVAL-IDB002V1)
– Power up the board
– Press and hold USER button
– Reset the board using RESET button (keep USER button pressed while resetting)
The orange LED DL2 will start to blink
– Release USER button
– Use BlueNRG GUI to Flash the device with new firmware (Tools -> Flash
motherboard FW).
2. BlueNRG USB Dongle (order code: STEVAL-IDB003V1)
– Press and hold SW1 button
– Plug the USB dongle on a PC USB port. The orange LED D3 will start to blink.
– Use BlueNRG GUI to Flash the device with a new firmware (Tools -> Flash
Motherboard FW).
3.2 The BlueNRG graphical user interface
This section describes the main functions of BlueNRG GUI application.
You can run this utility by clicking on the BlueNRG GUI icon on the Desktop or under:
Start → STMicroelectronics → BlueNRG DK X.X.X → BlueNRG GUI

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3.2.1 GUI main window
Figure 7. BlueNRG GUI main window
The BlueNRG GUI main window is characterized by different zones. Some of these zones
can be resized.
Port and interface selection
The uppermost zone allows the user to open the COM port associated to the BTLE
controller.
When a COM port is opened the following information are displayed:
– BlueNRG HW version
– BlueNRG FW version
– STM32L motherboard GUI firmware (VCOM) version
HCI commands
The HCI Commands tab contains a list of all the available HCI commands. Commands can
be filtered by checking/unchecking boxes under the filter section. After clicking on one of the
commands, all the packet fields will be displayed on the command packet table in the upper-
right section of the tab (see Figure 8).
Figure 8. Command packet table