Table of Contents
Advertisement
Quick Links
Introduction
The STEVAL-WESU1 is a System Evaluation Board designed to provide a cost effective solution
for precise motion sensing in wearable applications. The system is featuring a low power ARM
Cortex-M3 microcontroller unit (STM32L151), an iNEMO inertial module (LSM6DS3), a high
performance magnetometer (LIS3MDL), a barometric pressure sensor (LPS25HB), a Bluetooth®
low energy wireless network processor (BLUENRG-MS) and power management circuitry that
allows fast charging and precise energy estimation (STNS01 and STC3115). The connectivity
granted by the best in class BLUENRG-MS and supported by the integrated balun (BALF-NRG-
01D3) permit to maximize the RF performances with low area occupancy and design effort and
pass the RF Test for FCC certification (FCC ID: S9NWESU1) and IC certification (IC ID: 8976C-
WESU1).
An Android and iOS APP, available on Google Play and Apple Store, can be used for displaying
information sent by the STEVAL-WESU1 through BLE connectivity as well as for setting operative
modes.
Figure 1. STEVAL-WESU1 evaluation board
July 2015
USER MANUAL
Evaluation Board
STEVAL-WESU1
Rev 0.1
STMicroelectronics Confidential
UMxxxx
1/22
Advertisement
Table of Contents
Related Manuals for ST STEVAL-WESU1
Summary of Contents for ST STEVAL-WESU1
- Page 1 STEVAL-WESU1 Introduction The STEVAL-WESU1 is a System Evaluation Board designed to provide a cost effective solution for precise motion sensing in wearable applications. The system is featuring a low power ARM Cortex-M3 microcontroller unit (STM32L151), an iNEMO inertial module (LSM6DS3), a high performance magnetometer (LIS3MDL), a barometric pressure sensor (LPS25HB), a Bluetooth®...
-
Page 2: Table Of Contents
Table of Contents Board Description and Getting started ................... 4 Getting started ........................5 Hardware description ....................... 8 Microcontroller ........................8 Sensors ..........................8 2.2.1 LSM6DS3 ..........................8 2.2.2 LISM3DL ..........................8 2.2.3 LPS25HB ..........................9 BLUENRG-MS and BALF-NRG-01D3 ................... 9 Power management ....................... -
Page 4: Board Description And Getting Started
ST application note template 1 Board Description and Getting started The STEVAL-WESU1 is a System Evaluation Board designed and optimized in order to be a reference design for users would made their own wearable electronic devices. In fact, the system... -
Page 5: Getting Started
At power on the Application LED (LED1) starts with one smooth blink and in normal operation it blinks at 2s interval; after BLUENRG-MS connection the blinking interval becomes 1s and STEVAL-WESU1 system reads sensors data and sends it to a Bluetooth Smart Ready device; the data is displayed using a dedicated App. - Page 6 A custom (1.27 mm pitch) SWD connector is used to have a compact solution, since to program the on-board STM32L151 it has been included in the package a specific adapter useful to be connected to a programmer tool (e.g. ST-LINK/v2). Figure 4. Board Layout – top layer DRAFT Figure 5.
- Page 7 Bluetooth Low Energy connectivity is fundamental to install one of the App available for the Smartphone and Tablet: ST WESU Android App, available on Google Play; ST WESU iOS App available on Apple Store.
-
Page 8: Hardware Description
Up to 8 Kbyte of FIFO with dynamic allocation of significant data (i.e. external sensors, time stamp, etc) allows the overall power saving of the system.. ST’s family of MEMS sensor modules leverages the robust and mature manufacturing processes already used for the production of micro machined accelerometers and gyroscopes. -
Page 9: Lps25Hb
2.4.1 STNS01 and STLQ015 The STNS01 is a linear charger for single-cell Li-Ion batteries. In STEVAL-WESU1 system it is configured as battery charger and as power path selected between USB power source and battery power source. The STNS01's battery charger is designed to charge single cell Li-Ion batteries up to 4.2 V using a CC-CV charging algorithm (see STNS01 datasheet for more details). -
Page 10: Stc3115
The following sub-sections describe the connectors of STEVAL-WESU1 board (see Figure 4 as reference). The STEVAL-WESU1 has “L” form factor (see Figure 4), suitable to host the battery (i.e. 12xd25mm @ 85 mAh) in plane with the PCB and optimize the DRAFT final design. -
Page 11: Swd Connector And External Peripherals
A custom 10 pin (1.27 mm pitch) connector is soldered. It can be used: to program on-board microcontroller through a dedicated adapter connected to programmer tool (like ST-Link) (Figure 7) as an expansion connector to allow user to access to other board features as... -
Page 12: Usb Connector
2.5.4 Exposed pad connector STEVAL-WESU1 gives the possibility to reduce form factor by cutting PCB area hosting USB connector and expansion connector (see cutting line in 8). USB feature will be accessible by exposed pads on the bottom of the PCB (8). Firmware upgrade will be possible only over the air or via USB DFU. -
Page 13: Formal Notices Required By The U.s. Federal Communications Commission ("Fcc")
ST application note template Error! No text of specified style in document. 3 Formal notices required by the U.S. Federal Communications Commission ("FCC") Model: STEVAL-WESU1 FCC ID: S9NWESU1 Any changes or modifications to this equipment not expressly approved by STMicroelectronics may cause harmful interference and void the user’s authority to operate this equipment. -
Page 14: Formal Notices Required By The Industry Canada ("Ic")
Error! No text of specified style in document. ST application note template 4 Formal notices required by the Industry Canada ("IC") Model: STEVAL-WESU1 IC: 8976C-WESU1 English: This Class A or B digital apparatus complies with Canadian CS-03. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. -
Page 15: Board Schematic And Bill Of Material
Error! No text of specified style in document. ST application note template 5 Board schematic and bill of material This section contains the bill of material and layout of the STEVAL-WESU1 5.1 Bill of material BOM STEVAL-WESU1 Voltage Type /... - Page 16 Error! No text of specified style in document. ST application note template Mandatory 51pF NOT Manuf.Code C206 MOUNT Ceramic C0G ±10% SMD 0402 Murata GRM1555C1H510GA01D Marked Mandatory Manuf.Code C212,C213 ±0.1pF SMD 0201 Murata GRM0335C1H120GA01 Marked Mandatory Manuf.Code C214,C221 100p Ceramic X7R ±10%...
- Page 17 ST application note template Error! No text of specified style in document. mm pitch Mandatory Manuf.Code L203 10uH SMD 0805 Murata LQM21FN100M70L Marked L204 0R OHM ±0,1nH SMD 0402 Murata Mandatory Manuf.Code L205,L206 3.9nH ±0,3nH SMD 0201 Murata LQG15HN3N9SO2D Marked L401,L402,L40 1.5 Ohm...
- Page 18 Error! No text of specified style in document. ST application note template PUSHBUTT ON-DPST U.FL connector - SMD Coaxial U201 MOUNT 50 Ohm - 6 Ghz Connector Hirose U.FL-R-SMT-1(10) STM32L15 U100 1VEY6 WLCSP104 STM32L151VEY6 ST-SUPPLY BLUENRG- VFQPN32 5x5 U200 BLUENRG-MSQTR...
-
Page 19: Schematic
ST application note template Error! No text of specified style in document. 5.2 Schematic DRAFT STMicroelectronics Confidential Rev 0.1 19/22... -
Page 20: Revision History
Error! No text of specified style in document. ST application note template 6 Revision history Table 1: Table Title Revision Date of modification Description of modification July 15 Initial draft July 15 Modified version July 15 Changed name in STEVAL-WESU1 DRAFT 20/22 Version 0.1 STMicroelectronics Confidential... - Page 21 ST application note template Error! No text of specified style in document. DRAFT STMicroelectronics Confidential Rev 0.1 21/22...
- Page 22 No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein.
Need help?
Do you have a question about the STEVAL-WESU1 and is the answer not in the manual?
Questions and answers