Silicon Laboratories Biometric-EXP EVB User Manual
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Silicon Laboratories Biometric-EXP EVB User Manual

Silicon Laboratories Biometric-EXP EVB User Manual

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B
-EXP Evaluation Board U
I O ME T R I C
1. Introduction
The Silicon Labs' 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 Labs 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
notable that the Biometric-EXP EVB contains a Silicon Labs' 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 postage stamp board

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
1.2. Getting Started
The first step to getting started with your new Biometric-EXP-EVB is to download Simplicity Studio from
www.silabs.com/simplicity-studio.
The simplicity studio software package contains all the tools, drivers, software examples, and documentation
needed to use the Biometric-EXP-EVB.
You will need to connect the Biometric-EXP-EVB to the EFM32WG-STK3800 Wonder Gecko STK or the
EFM32GG-STK3700 Giant Gecko STK. The demo code can be loaded using the USB cable and the J-Link debug
interface.
Rev. 0.4 12/15
Biometric-EXP EVB
Copyright © 2015 by Silicon Laboratories
'
G
SER
S
UIDE
Biometric-EXP EVB

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Summary of Contents for Silicon Laboratories Biometric-EXP EVB

  • Page 1 SpO2 readings on the Wonder Gecko STK display. In addition to the Silicon Labs sensors, it is also notable that the Biometric-EXP EVB contains a Silicon Labs’ TS3310 Boost DC-DC Converter. Figure 1. EFM32 Wonder Gecko STK (Left) Connected to a Biometric-EXP (Right) 1.1.
  • Page 2 Biometric-EXP EVB 2. Loading the Demo Onto the Gecko Starter Kit The following steps will load the demo firmware onto the Gecko STK. This process requires Simplicity Studio which is available for download at www.silabs.com/simplicity-studio. 1. Use a USB mini type cable to connect the J-Link debug interface on the Gecko STK to the PC and set the 3-position Power Source Select switch to DBG (right-most position).
  • Page 3 Biometric-EXP EVB 6. Select the Biometric-EXP demo from the list and click Start. Figure 3. Demo Selection Dialog Rev. 0.4...

  • Page 4: Running The Demo

    Biometric-EXP EVB 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 (Displayed for 1 s) (Displayed for 1 s) Figure 4. Biometric-EXP Demo Startup Sequence Flash Programmer Dialog Rev. 0.4...

  • Page 6: Heart Rate Monitor Mode

    Biometric-EXP EVB Heart Rate Monitor ( i1146) Figure 5. Biometric-EXP Demo Modes *Note: SpO2 Monitor mode is not available when using 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 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 Section “3.2.
  • Page 8 Biometric-EXP EVB 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 Gecko STK’s USB interface. Only HRM and SpO2 data is available via the USB debug interface.
  • Page 9 Biometric-EXP EVB   Figure 8. Biometric-EXP Virtual COM Port Device in Windows Device Manager Rev. 0.4...
  • Page 10 Biometric-EXP EVB 4.3. Windows Applications for USB Debug Mode The Biometric-EXP Windows Evaluation Software includes two Windows applications for evaluating and debugging the Biometric-EXP Heart Rate Monitor and SpO2 functions. An installation program for the Biometric- EXP Windows Evaluation Software is distributed with Simplicity Studio. It can be found in the Installers directory within the Simplicity Studio directory structure.
  • Page 11 Biometric-EXP EVB   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: Hardware Overview

    Biometric-EXP EVB 5. Hardware Overview 5.1. 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 11. Biometric-EXP Block Diagram 5.2.
  • Page 13 Biometric-EXP EVB 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 PB12...
  • Page 14 Biometric-EXP EVB 5.3. 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 12. Biometric-EXP Hardware Component Layout Figure 13. Wonder Gecko STK Component Layout 5.4.

  • Page 15: Document Change List

    Biometric-EXP EVB OCUMENT HANGE Revision 0.1 to Revision 0.2  Added "1.2. Getting Started" on page 1.  Modified “2. Loading the Demo Onto the Gecko Starter Kit” to describe how to load the demo that is integrated into Simplicity Studio ...
  • Page 16 The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death.

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