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B
EXP Evaluation Board U
I O ME T R I C
1. Introduction
The Silicon Laboratories' Biometric-EXP Evaluation Board is a hardware plugin card for EFM32™ Starter Kits
(STK's). The Biometric-EXP is intended to demonstrate and evaluate the biometric applications of Silicon
Laboratories Si7013 Humidity and Temperature Sensor and the Si1146 Proximity/UV/Ambient Light Sensor which
is capable of monitoring pulse rate and oxygen saturation (SpO2). A Biometric-EXP Software Demo is available to
download to an EFM32 Wonder Gecko STK through Simplicity Studio. The software is capable of displaying
humidity, temperature, UV, pulse rate, and SpO2 readings on the Wonder Gecko STK display. In addition to the
Silicon Labs sensors, it is also of note that the Biometric-EXP EVB contains a Silicon Laboratories' TS3310 Boost
DC-DC Converter.
Figure 1. EFM32 Wonder Gecko STK (Left) Connected to a Biometric-EXP (Right)
1.1. Key Features

Si7013 Humidity and Temperature Sensor

Si1146 Proximity/UV/Ambient Light Sensor capable of monitoring Pulse Rate and SpO2

6-pin ribbon cable connector for attaching a wrist-based heart rate monitor EVB (ordered separately as
HRM-GGG-PS)

20-pin expansion header

Battery operated with low power optimizations for long battery life

Demonstration software source code available

USB debug mode allowing HRM and SpO2 samples to be transferred to a PC

Windows GUI to visualize pulse signals and to record samples from USB debug mode

Easy use through Simplicity Studio
Rev. 0.1 8/14
Biometric EXP EVB UG
Copyright © 2014 by Silicon Laboratories
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Biometric EXP EVB UG

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Summary of Contents for Silicon Laboratories Biometric EXP EVB UG

  • Page 1 EFM32 Wonder Gecko STK through Simplicity Studio. The software is capable of displaying humidity, temperature, UV, pulse rate, and SpO2 readings on the Wonder Gecko STK display. In addition to the Silicon Labs sensors, it is also of note that the Biometric-EXP EVB contains a Silicon Laboratories’ TS3310 Boost DC-DC Converter.
  • Page 2 Biometric EXP EVB UG 2. Loading the Demo onto the Wonder Gecko STK The following steps will load the demo firmware onto the Wonder Gecko STK. This process requires Simplicity Studio which is available for download at www.silabs.com/simplicity-studio. 1. Connect the Wonder Gecko STK to the PC via USB.
  • Page 3 Biometric EXP EVB UG From the Simplicity IDE toolbar open the flash programmer ( icon   Figure 4. Flash Programmer Dialog 5. Ensure that the Wonder Gecko STK appears in the Device description at the top of the Flash Programmer dialog. 6. Browse to the hex file EFM32WG_Biometric_EXP_Demo.hex then click Program.
  • Page 4: Running The Demo

    Biometric EXP EVB UG 3. Running the Demo A Silicon Labs EFM32 Wonder Gecko Starter Kit (EFM32WG-STK3800) and a Silicon Labs Biometric-EXP (see Figure 1) is needed to run the Biometric EXP Demo. The Biometric-EXP demo application uses the Wonder-Gecko STK’s LCD to display sensor output and the two push buttons, PB0 and PB1, to cycle through the modes of the demo.
  • Page 5 Biometric EXP EVB UG (Displayed for 1 s) (Displayed for 1 s) Figure 5. Biometric-EXP Demo Startup Sequence Rev. 0.1...
  • Page 6 Biometric EXP EVB UG Heart Rate Monitor ( i1146) Figure 6. Biometric-EXP Demo Modes *Note: SpO2 Monitor mode is not available when using a HRM-GGG-PS, Si1143-M01-PS or Si1147-M01-PS. 3.2. Heart Rate Monitor Mode When heart rate monitor demo is idle, the LCD will show the word “Pulse” followed by a message instructing the user to place his/her finger on the optical sensor.
  • Page 7 Biometric EXP EVB UG 3.3. SpO2 Monitor Mode When SpO2 mode is active, the LCD will show “SpO2” followed by a message instructing the user to place his/her finger on the optical sensor. Beyond that, SpO2 monitor mode mirrors the operation of the Heart Rate Monitor mode as described in “3.2.
  • Page 8 Biometric EXP EVB UG 4. USB Debug Mode The Biometric-EXP demo firmware includes a debug mode that enables Heart Rate Monitor and SpO2 raw samples from the sensor to be streamed to a host PC via the Wonder Gecko STK’s USB interface. Only HRM and SpO2 data is available via the USB debug interface.
  • Page 9 Biometric EXP EVB UG   Figure 8. Biometric-EXP Virtual COM Port Device in Windows Device Manager Rev. 0.1...
  • Page 10 HRM-SpO2 recording is beyond the scope of this document. Refer to the HRM-SpO2 API Reference Manual available from Silicon Laboratories for further details. The C++ source code of the Console Demo is supplied within the installation. A screen shot of the Console demo is show in Figure 10.
  • Page 11 Biometric EXP EVB UG   Figure 10. Windows Console Demo To connect the console to the streaming output from the Biometric-EXP, the user can type –u COMx <filename> at the prompt. In this command, COMx is the VCP COM port as shown in Figure 8, and the optional input <filename>...
  • Page 12 Biometric EXP EVB UG 5. Importing the Source Code Project into Simplicity Studio The following steps will import the Biometric-EXP Demo source code into Simplicity Studio resulting in a project that can be compiled, linked and debugged using the Wonder Gecko starter kit.
  • Page 13 Biometric EXP EVB UG   Figure 12. Simplicity IDE 3. In the Simplicity IDE menu select FileImport. 4. Under the General heading, select Existing Projects into the Workspace then click Next. Rev. 0.1...
  • Page 14 Biometric EXP EVB UG   Figure 13. Simplicity IDE Import Dialog 5. Select Select root directory then Browse to the folder EFM32WG_Biometric_EXP_Demo in the Biometric-EXP Demo distribution. Rev. 0.1...
  • Page 15 Biometric EXP EVB UG   Figure 14. Select the Project to Import 6. Confirm that the check box for the project is checked. 7. If you wish to make a local copy within the Simplicity IDE workspace select Copy projects into workspace.
  • Page 16 Biometric EXP EVB UG   Figure 15. Simplicity IDE with EFM32WG_Biometric_EXP_Demo Project To correct the link: a. In the Simplicity IDE Project Explorer, right click on the lib folder then select Properties. b. The Resources page of the Properties dialog displays the link path. Modify this path by clicking the Edit button then browsing to the location of the lib folder.
  • Page 17 Biometric EXP EVB UG   Figure 16. Symbolic Link to the Lib Folder Upon completion of the steps above you should have a working project in Simplicity Studio that can be built and debugged.   10. To build the demo, simply click on the icon in the Simplicity IDE.
  • Page 18: Hardware Overview

    Biometric EXP EVB UG 6. Hardware Overview 6.1. Block Diagram Vmcu EXP Connector EXP Connector (JP3) (JP4) All other lines I2C Ribbon Connector TS3310 DC-DC (J6) Boost Converter I2C2 Si1146 Proximity/ UV/Ambient Light Sensor I2C1 Si7013 Humidity & Temperature Sensor Figure 17.
  • Page 19 Biometric EXP EVB UG Table 1. Expansion Connectors (JP3 and JP4) (Continued) Pin # Biometric-EXP Signal Description WonderGecko Signal Not Used Si7013 and I C Ribbon Connector (J6) SCL Not Used Not Used PB11 Enable TS3310 Boost DC-DC Converter Not Used...
  • Page 20 Biometric EXP EVB UG 6.3. Hardware Component Layout IR and Red LEDs Si1146 Proximity/UV/Ambient Light Silabs TS3310 DC-DC Boost Converter Si7013 Humidity & Temperature EXP connector for EFM32 STK I2C Ribbon Cable Connector Figure 18. Biometric-EXP Hardware Component Layout Figure 19. Wonder Gecko STK Component Layout...
  • Page 21 Biometric EXP EVB UG 6.4. Schematic Rev. 0.1...
  • Page 22: Contact Information

    Silicon Laboratories products are not designed, intended, or authorized for use in applications intend- ed to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur.