UM0979 User manual STEVAL-MKI109V2: eMotion motherboard for MEMS adapter boards Introduction The STEVAL-MKI109V2 (eMotion) is a motherboard designed to provide the user with a complete ready-to-use platform for the demonstration of MEMS devices mounted on adapter boards. The STEVAL-MKI109V2 uses an STM32F103RET6 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 the demonstration board and how to upgrade the firmware of the microcontroller. For details regarding the features of each sensor, please refer to the datasheet available for each individual device. UM0979 - Rev 6 - February 2018 www.st.com/ For further information contact your local STMicroelectronics sales office.UM0979 Demonstration kit description 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. Demonstration board block diagram. Figure 1. Demonstration board block diagram Control Switches (reset, left, right) 2 SPI/I C/ Analog U.S.B. USB MEMS (ADC) Connector device C STM32F103RET6 With DFU DIL 24 Feature Connector Analog Power On LED Controls Interrupt LEDs (ST,PD,FS) General Purpose LEDs As shown in the Figure 1. Demonstration board block diagram, the eMotion demonstration kit is based on the STM32F103RET6 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 releases. 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. Top silkscreen of the eMotion kit JP2 and JP3). The top silkscreen view and image of the full board are shown in Figure 2. Top silkscreen of the eMotion kit and Figure 3. Board top view respectively. UM0979 - Rev 6 page 2/39