VSHLD-FT121

FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Future Technology Devices International Ltd Datasheet FT121 G Sensor Shield 1 Introduction 1.1 Features The FT121 G-Sensor shield is designed to connect directly to an Arduino Pro development board. The shield allows the micro-controller on the Arduino Pro to access the FT121 USB device controller. The FT121 G Sensor Shield has the following features:  Using the FTDI FT121 chipset and a three axes linear accelerometer (ST LIS331DLH) device, the module may be used to implement a USB HID game controller. FT121 enhanced USB device controller with SPI interface.  LIS313DLH 3- axis linear accelerometer (X, Y & Z) with selectable full scales of ±2g/±4g/±8g  An SPI Interface: Data transfer over the SPI bus to the Arduino pro via pin headers  Selectable SPI & I²C interface to control the 3axes accelerometer  A serial UART output pin  Two accelerometer interrupts  Three pushbuttons and two LEDs for HID application  5V USB cable power supplied operation  Onboard 3.3V regulator to power the accelerometer  Mini-B USB connector  Operating Temperature range -40oC to +85oC The user may also define other interesting applications from the micro-controller board. The Arduino Pro is a micro-controller board based on the ATmega168 or ATmega328 and is not available from FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 2 Clearance No.: FTDI# 351 Typical Applications The module may be used with the Arduino Pro for: 3  USB HID controller  USB Game controllers Ordering Information The module is sold as individual units as below: Part No. Description VSHLD-FT121 FT121 G-Sensor Shield Board Table 3-1 – Ordering information 2 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Table of Contents 1 Introduction ................................................................................... 1 1.1 Features ........................................................................................................ 1 2 Typical Applications ........................................................................ 2 3 Ordering Information ..................................................................... 2 4 Pin Out and Signal Description ....................................................... 4 5 4.1 Shield Board Connector Description .............................................................. 4 4.2 Shield Board Connector : Pin and Signal Description ..................................... 5 Hardware Functionality .................................................................. 7 5.1 Power............................................................................................................ 7 5.2 Input/Output ................................................................................................ 7 5.3 LEDS.............................................................................................................. 7 5.4 Pushbutton ................................................................................................... 7 5.5 Switches ....................................................................................................... 7 5.6 USB Controller Operation .............................................................................. 8 5.7 Accelerometer Operation .............................................................................. 9 6 Schematic ..................................................................................... 10 7 Mechanical Details ........................................................................ 11 8 Contact Information ..................................................................... 12 Appendix A - References ....................................................................................... 23 Appendix B - List of Figures and Tables ................................................................. 24 Appendix C – Revision History ............................................................................... 25 3 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 4 Clearance No.: FTDI# 351 Pin Out and Signal Description 4.1 Shield Board Connector Description Figure 1 : Shield Board Top View A detailed description of each pin out is given in the next section. CONNECTOR FUNCTION CN2 USB Port Connector J1 Interface to Arduino Pro J2 Interface to Arduino Pro J3 Interface to Arduino Pro J4 Interface to Arduino Pro Table 4-1 : Shield Board Connector Descriptions 4 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 4.2 Shield Board Connector : Pin and Signal Description Pin No. Name Type Description J1-1 RESET I Reset for FT121 J1-2 NC - No Connection J1-3 VCC5V P 5V VBUS Power from USB connector J1-4 GND P Ground J1-5 GND P Ground J1-6 NC - No Connection J2-1 SW1 O Push button. Logic 0 output when pressed. J2-2 SW2 O Push button. Logic 0 output when pressed. J2-3 SW3 O Push button. Logic 0 output when pressed. J2-4 NC - No Connection J2-5 SDA I/O I2C Data J2-6 SCL I I2C Clock J3-1 RX I UART Data Receiver via the Arduino J3-2 TX O UART Data Transmitter via the Arduino J3-3 INT1 O LIS331DLH Interrupt 1 J3-4 INT2 O LIS331DLH Interrupt 2 J3-5 VC1_CS_N I Reserve for VC1 Use J3-6 CS I LIS331DLH SPI slave select input I Blue LED. Active low to illuminate. Function defined by J3-7 J3-8 LED1 external controller I LED2 Blue LED. Active low to illuminate. Function defined by external controller J4-1 SUSPEND I, OD FT121 Device suspend (output) and wakeup (input) J4-2 INT_N OD Interrupt (Active Low) J4-3 SS_N I FT121 SPI slave select input 5 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 J4-4 MOSI I SPI Slave Input J4-5 MISO O SPI Slave Output Pin No. Name Type Description J4-6 SCLK I SPI Clock Input J4-7 GND P Ground J4-8 NC - Table 4-2 : Pin Signal Descriptions 6 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 5 Clearance No.: FTDI# 351 Hardware Functionality 5.1 Power The 5V power from the USB cable is supplied to the G Sensor Shield and the Arduino Pro development board which controls the shield. This also supplies an onboard 3.3V regulator providing the power for the G-Sensor. The module will consume 20mA max. 5.2 Input/Output The Arduino Pro development board is connected via pin headers. The USB controller and 3-axes accelerometer are accessed by the SPI interface between the boards. The 3-axes accelerometer can also be accessed by an I2C interface. The female header on the G-Sensor shield allows for stacking additional Arduino shields to perform additional applications. IO levels are 3.3V. A Mini-B type USB connector to connect to the USB port from the host PC is also provided on the board. 5.3 LEDS There are 2 LEDs on the shield board which may be controlled from the Arduino Pro GPIO signals. The function is defined by the application and may include indicating the X-axis directional movement or display debug. A logic 0 is required to illuminate the LED. 5.4 Pushbutton There are 3 pushbuttons on the shield board which may be controlled from the Arduino Pro GPIO signals. The function is defined by the application and may be used in a game setting as the three buttons required for a game controller. The output is logic 1 until the button is pushed. 5.5 Switches There are two methods to control the accelerometer. Using an SPI interface, or using an I2C interface. JP1, JP2, JP3 are used to select the accelerometer control bus mode on the shield board. Pin Number Description Pin1-Pin2 SPI Mode Pin2-Pin3 I2C Mode Table 5-1 : LIS331DLH Control Bus Mode 7 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 In I2C mode JP4 is used to set the device address. JP4 is not used in SPI mode. Pin Number Description Pin1-Pin2 SA0 High Pin2-Pin3 SA0 Low Table 5-2 : LIS331DLH I2C Device Address 5.6 USB Controller Operation The USB controller, the FTDI FT121 IC converts the USB bus data to SPI data. The SPI port is a slave to the Arduino Pro SPI Master. SPI Master and GPIO drivers are supplied with the Arduino Toolchain to allow programming and reading data over the SPI interface to the FT121 IC. Users can define standard USB protocol drivers such as HID, CDC class, etc, from the microcontroller. Figure 2 : SPI Bus Communication 8 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 5.7 Accelerometer Operation The accelerometer is an ST LIS331DLH, allowing the 3-axes movement information to be accessed through either the SPI bus or the I2C bus. The interface is selectable by changing the jumpers JP1 to JP4 and setting the LIS331DLH chip select pin to high. Figure 3 : LIS331DLH I2C Communication 9 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 6 Clearance No.: FTDI# 351 Schematic Figure 4 : Schematic 10 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 7 Clearance No.: FTDI# 351 Mechanical Details The module dimensions in mm are: Figure 5 : Mechanical Dimensions 11 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 8 Clearance No.: FTDI# 351 Contact Information Head Office – Glasgow, UK Branch Office – Tigard, Oregon, USA Unit 1, 2 Seaward Place, Centurion Business Park Glasgow G41 1HH United Kingdom Tel: +44 (0) 141 429 2777 Fax: +44 (0) 141 429 2758 7130 SW Fir Loop Tigard, OR 97223 USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) E-Mail (Sales) E-Mail (Support) E-Mail (General Enquiries) sales1@ftdichip.com support1@ftdichip.com admin1@ftdichip.com us.sales@ftdichip.com us.support@ftdichip.com us.admin@ftdichip.com Branch Office – Taipei, Taiwan Branch Office – Shanghai, China 2F, No. 516, Sec. 1, NeiHu Road Taipei 114 Taiwan , R.O.C. Tel: +886 (0) 2 8797 1330 Fax: +886 (0) 2 8751 9737 Room 1103, No. 666 West Huaihai Road, Changning District, Shanghai, 200052 China Tel: +86 (0)21 6235 1596 Fax: +86 (0)21 6235 1595 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) E-mail (Sales) E-mail (Support) E-mail (General Enquiries) tw.sales1@ftdichip.com tw.support1@ftdichip.com tw.admin1@ftdichip.com cn.sales@ftdichip.com cn.support@ftdichip.com cn.admin@ftdichip.com Web Site http://ftdichip.com Distributor and Sales Representatives Please visit the Sales Network page of the FTDI Web site for the contact details of our distributor(s) and sales representative(s) in your country. System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level performance requirements. All application-related information in this document (including application descriptions, suggested FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640 12 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Appendix A - References For module documentations, please refer to URL below: FT121 datasheet http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT121.pdf LIS331DLH G sensor datasheet datasheet http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00213470.pdf Arduino Pro home page http://arduino.cc/en/Main/ArduinoBoardPro 23 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Appendix B - List of Figures and Tables List of Figures Figure 1 : Shield Board Top View ................................................................................................................. 4 Figure 2 : SPI Bus Communication ................................................................................................................ 8 2 Figure 3 : LIS331DLH I C Communication .................................................................................................... 9 Figure 4 : Schematic...................................................................................................................................... 10 Figure 5 : Mechanical Dimensions ............................................................................................................... 11 List of Tables Table 3-1 – Ordering information ................................................................................................................... 2 Table 4-1 : Shield Board Connector Descriptions ....................................................................................... 4 Table 4-2 : Pin Signal Descriptions ............................................................................................................... 6 Table 5-1 : LIS331DLH Control Bus Mode .................................................................................................... 7 Table 5-2 : LIS331DLH I2C Device Address ................................................................................................. 8 24 Copyright © 2013 Future Technology Devices International Limited FT121 G Sensor Shield Version 1.0 Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Appendix C – Revision History Document Title: FT121 G Sensor Shield Document Reference No.: FT_000916 Clearance No.: FTDI# 351 Product Page: http://www.ftdichip.com/Products/Modules/DevelopmentModules.htm Document Feedback: Send Feedback Version 1.0 Initial Datasheet released Oct 2013 25 Copyright © 2013 Future Technology Devices International Limited