ST STEVAL-MKI132V1 User manual

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January 2013 Doc ID 023744 Rev 1 1/26
UM1579
User manual
STEVAL-MKI132V1- BlueMotion motherboard for MEMS
adapter boards
Introduction
The STEVAL-MKI132V1 (BlueMotion) motherboard is designed to provide the user with a
complete ready-to-use platform for the demonstration of MEMS devices mounted on
adapter boards.
This STEVAL-MKI132V1 demonstration board uses an STM32F103TB microcontroller and
an SPBT2532C2.AT Bluetooth
®
module; it functions as a bridge between the sensor on the
adapter board and the PC. It is possible to connect the BlueMotion to the PC using the
Bluetooth module and using the Unico graphical user interface (GUI), downloadable from
the ST website, or dedicated software routines for customized applications.
This user manual describes the hardware included with the demonstration board and
provides the information required to install and run the demonstration board user interface.
For details regarding the features of each sensor, please refer to the datasheets available for
each individual device.
www.st.com

Contents UM1579
2/26 Doc ID 023744 Rev 1
Contents
1 Demonstration board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 BlueMotion board installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Establishing Bluetooth connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Supported MEMS adapter boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Supported commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Supported commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.1 Commands list and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.2 Digital output accelerometers: supported commands . . . . . . . . . . . . . . 19
4.2.3 Digital output gyroscopes: supported commands . . . . . . . . . . . . . . . . . 20
4.2.4 Digital output magnetometers: supported commands . . . . . . . . . . . . . . 20
4.3 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

UM1579 Demonstration board description
Doc ID 023744 Rev 1 3/26
1 Demonstration board description
The BlueMotion is a complete demonstration board that allows the demonstration of both
digital and analog MEMS sensors. Thanks to its DIL 24 connector, a wide range of MEMS
adapter boards can be used.
The block diagram of the demonstration board is shown in Figure 1.
Figure 1. Demonstration board block diagram
As shown in Figure 1, the BlueMotion demonstration board is based on the STM32F103TB
microcontroller and can be connected to the PC through Bluetooth. Data coming from the
MEMS sensor connected to the board can be read through the PC GUI provided with the
board.
The BlueMotion can be flashed with compatible firmware using an SWD connector or a
UART connector. See www.st.com/mems for new firmware releases.
The following steps are required to flash the board using UART:
1. Connect the BlueMotion to the PC using a UART connector (use the FS and ST pins of
the J2 connector shown in Figure 10).
2. Set the BOOT0 pin of the DIL 24 device adapter high.
3. Power up the board.
4. Use the STM32 flash loader utility to establish a UART connection with the BlueMotion.
The recommended settings are shown in Figure 2.
STM32F103TB
µC
MEMS
device Bluetooth
UART
Interrupt LEDs
General Purpose LEDs
DIL 24
Connector
I2C
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Figure 2. Connecting BlueMotion using UART
Download the hexadecimal file of the firmware on BlueMotion using the STM32 flash loader
utility. For further details, refer to the utility’s user manual.
Figure 3. Downloading firmware using UART
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Figure 4. Connecting BlueMotion using UART
The BlueMotion also integrates one general purpose LED, and two LEDs connected directly
to the interrupt pins of the digital adapters.
The top view and the bottom view of the full board are shown in Figure 5 and Figure 6
respectively.
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Figure 5. Board top view
Figure 6. Board bottom view
The BlueMotion demonstration board can be used with the Unico GUI interface which allows
simple interaction with the sensor. The steps required for establishing a Bluetooth
connection with the board and accessing it are discussed in the following sections.
FT
ref 2
ref 1
ref 3
ref 4
ref 5
ref 6
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In Figure 5 some of the main components placed on the top layer of the BlueMotion board
are highlighted.
● The dual power supply connector J1 (Figure 5, ref 1) can be used to supply power in
one of the two possible modes. Pin 2 on must be connected to ground. The board can
be powered with either a 1.5 V supply, e.g. an AA battery, connected to Pin 1 or with a
supply in the range 3.5 V - 6.0 V. connected to Pin 3.
● The SWD connector J3 can (Figure 5, ref 2) be used to program the BlueMotion board.
● Jumper JP1 allows the user to measure the sensor current consumption by connecting
a multimeter in series with its terminals when a 1.5 V power supply is used (Figure 5,
ref 3).
● Jumper JP2 allows the user to measure the sensor current consumption by connecting
a multimeter in series with its terminals when a power supply in the range 3.5 V - 6.0 V
is used (Figure 5, ref 4).
BlueMotion also integrates three LEDs:
● LED D5 (Figure 5, ref 5) is a general purpose LED and is used to indicate some
firmware states.
● LEDs D6 and D7 (Figure 5, ref 6) are directly connected to the interrupt pins of the
MEMS digital adapters (if available on the sensor mounted on the adapter board).

BlueMotion board installation UM1579
8/26 Doc ID 023744 Rev 1
2 BlueMotion board installation
The software package can be downloaded from the st.com website and includes the
following directory structure:
● FIRMWARE: it contains the source code of the firmware of the BlueMotion board
together with the corresponding binary file that can be flashed to the board.
The section below describes the procedure for establishing a Bluetooth connection with the
BlueMotion board.
2.1 Establishing Bluetooth connection
A Bluetooth connection to the BlueMotion board can be established in three steps:
searching the BlueMotion device, pairing it and connecting to it. To search the device, open
the “Bluetooth Places” using the Bluetooth software on your PC and click on “Search
Devices“. The BlueMotion board should appear with the name “eMotion BT”, as shown in
Figure 7.

UM1579 BlueMotion board installation
Doc ID 023744 Rev 1 9/26
Figure 7. Searching the BlueMotion board
To pair the device right click on the icon “eMotion BT” and select “Pair”. Enter “1234” in the
“Passkey” field in the dialogue-box (shown in Figure 8) and click “OK”.
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