ST eMotion STEVAL-MKI109V1 User manual

March 2011 Doc ID 17768 Rev 1 1/32
UM0979
User manual
STEVAL-MKI109V1 - eMotion
motherboard for MEMS adapter board
Introduction
The STEVAL-MKI109V1 (eMotion) is a motherboard designed to provide the user with a
complete ready-to-use platform for demonstration of MEMS devices mounted on adapter
boards.
The eMotion board uses an STM32F102RB microcontroller which functions as a bridge
between the sensor on the adapter board and the PC, on which it is possible to use 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 kit and provides
the information required to install and run the demonstration kit user interface.
For details regarding the features of each sensor, please refer to the datasheets available for
each individual device.
www.st.com

Contents UM0979
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Contents
1 Demonstration kit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 eMotion board installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 DFU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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 . . . . . . . . . . . . . . 21
4.2.3 Analog output accelerometers: supported commands . . . . . . . . . . . . . 22
4.2.4 Digital output gyroscopes: supported commands . . . . . . . . . . . . . . . . . 23
4.2.5 Analog output gyroscopes: supported commands . . . . . . . . . . . . . . . . . 24
4.2.6 Digital output pressure sensor: supported commands . . . . . . . . . . . . . 25
4.3 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

UM0979 List of tables
Doc ID 17768 Rev 1 3/32
List of tables
Table 1. Jumper configuration for power-down (PD), self test (ST) and high-pass filter reset (HP). . 8
Table 2. List of supported MEMS adapter boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3. Supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 4. Returned values for *start command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 5. Returned values for *debug command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 6. Digital output accelerometers: supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 7. Analog Output Accelerometers: supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 8. Digital output gyroscopes: supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 9. Analog output gyroscopes: supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 10. Digital output pressure sensor: supported commands list . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 11. Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

List of figures UM0979
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List of figures
Figure 1. Demonstration board block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Top silk screen of the eMotion kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Board top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Notify icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. Hardware update Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Virtual COM driver port assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Schematic diagram of the eMotion board (power supply and USB) . . . . . . . . . . . . . . . . . . 26
Figure 8. Schematic diagram of the eMotion board (STM32 and connectors). . . . . . . . . . . . . . . . . . 27

UM0979 Demonstration kit description
Doc ID 17768 Rev 1 5/32
1 Demonstration kit description
The eMotion is a complete demonstration kit that allows 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 kit is shown in Figure 1.
Figure 1. Demonstration board block diagram
As shown in the Figure 1, the eMotion demonstration kit is based on the STM32F102RB
microcontroller and can be connected to the PC through the USB bus. Data coming from the
MEMS sensor connected to the board can be read through the PC GUI provided with the kit.
The eMotion also implements the DFU (device firmware upgrade) feature, therefore, in the
case of a new firmware release, it can be reprogrammed without the need to use a
programmer. See www.st.com/mems for new firmware release.
The eMotion also integrates three general purpose LEDs, two LEDs connected directly to
the interrupt pins of digital adapters and the power/USB LED. Moreover, the eMotion
integrates three buttons: two are available to the user on a dedicated GPIO of the
microcontroller, while the other is used as reset for the microcontroller.
All the MEMS adapter pins are available on two connectors placed on the board (Figure 2
JP2 and JP3).
The top silk screen view and image of the full board are shown in Figure 2 and Figure 3
respectively.
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Demonstration kit description UM0979
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Figure 2. Top silk screen of the eMotion kit
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UM0979 Demonstration kit description
Doc ID 17768 Rev 1 7/32
Figure 3. Board top view
In order to use the eMotion demonstration kit, installation of a dedicated driver is required,
which is included in the installation pack, together with a GUI interface which allows simple
interaction with the sensor. The steps required for driver and software installation are
described in the following sections.
In Figure 3 some main components placed on the top layer of the eMotion kit are
highlighted.
●Jumpers JP9 and JP10 (Figure 3, ref 10, ref 11) are used to select the STM32 boot
mode. When the eMotion is used together with MEMS adapters, JP9 and J1P0 must be
fitted (see STM32 datasheet for more information).
●Jumper J2 (Figure 3, ref 7) can be used to directly supply the board (from 3.5 V to 6 V)
instead of using the USB connector.
●Jumper JP1 allows the user to measure the sensor current consumption by connecting
a multimeter in series with its terminals (Figure 3, ref 9).
●Jumpers JP4, JP5, and JP6 (Figure 3, ref 8) are used to manually set some features
which are available for just some of the analog MEMS adapters (see Ta b l e 1 for more
details). JP4 is used to set the self test feature, JP5 to handle the power-down pin, and
JP6 to reset the MEMS high-pass filter. When they are fitted on pins 2-3, these
functions are handled by the firmware itself.
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Demonstration kit description UM0979
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●J1 connector (Figure 3, ref 3) can be used to both reprogram the STM32 and to debug
the code through the JTAG or SWD protocols.
●Jumper JP7 (Figure 3, ref 4) is used to select either JTAG (JP7 unfitted) or SWD (JP7
fitted) mode.
eMotion also integrates six LEDs and three buttons:
●LED D1 (Figure 3, ref 6) is switched on when the board is power supplied.
●LEDs D2 and D3 (Figure 3, ref 13) are directly connected to the interrupt pins of the
MEMS digital adapters (if available on the sensor mounted on the adapter board).
●LEDs D4, D5, and D6 (Figure 3, ref 12) are general purpose LEDs and are used to
indicate some firmware state. For example, LED D6 is switched on when a specific
firmware is selected from those available. LED D5 on indicates that the microcontroller
is well configured for communication with the sensor. Finally the LED D4, blinks
according to the sensor data rate selected.
●Button SW3 (Figure 3, ref 1) is used to reset the STM32.
●Button SW1 and SW2 (Figure 3, ref 2 and ref 5) are connected to STM32 GPIOs and
are available to the user.
Table 1. Jumper configuration for power-down (PD), self test (ST) and high-pass
filter reset (HP)
Jumper on 1-2
position
Jumper on 2-3
position Jumper unfitted
JP4
ST
logic level 1: self test
ON
Self test is handled by
the firmware
logic level 0: self test
OFF, default
JP5
PD
logic level 1: power-
down mode
Power-down is handled
by the firmware
logic level 0: normal
mode, default
JP6
HP
logic level 1: external
high-pass filter reset
High-pass filter reset is
handled by the
firmware
logic level 0: normal
mode, default

UM0979 eMotion board installation
Doc ID 17768 Rev 1 9/32
2 eMotion board installation
The software package can be downloaded from the st.com website and includes the
following directory structure:
●DRIVER: it contains the installation package for the USB drivers needed to connect the
eMotion board to the PC
●DFU: it contains the installation package for the software needed to upgrade the
firmware of the eMotion board (DFU)
●FIRMWARE: it contains the source code of the firmware of the eMotion board together
with the corresponding binary file that can be flashed to the board using the DFU
software.
The sections below describe the procedure to install the driver for the eMotion board and the
DFU software.
2.1 Hardware installation
To install the STM32 virtual COM port driver, launch the “VCPDriver_V1.1_Setup.exe”
included in the package under the “DRIVER” folder and follow the instructions on the
screen. Once the driver is installed, insert the demonstration kit board into a free USB port.
The “Notify” icon should appear, as in Figure 4.
Figure 4. Notify icon
The “Hardware Update Wizard” window then appears (Figure 5), follow the instructions on
the screen to complete the procedure. When driver installations starts, the user is prompted
with the “Hardware Installation” dialog window, click the “Continue Anyway” button.

eMotion board installation UM0979
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Figure 5. Hardware update Wizard
Now the eMotion should be recognized by the PC as a virtual COM. In order to check which
COM port has been assigned to the board, right click on “My Computer” and select
“Manage”, select “Device Manager” and scroll through the list until “Ports(COM & LPT)”. In
the following example (Figure 6) the COM11 has been assigned to the board.