AVR4018: Inertial Two (ATAVRSBIN2) Hardware User's Guide 8-bit
Contents
1. AVR4018 Inertial Two ATAVRSBIN2 Hardware User s Guide Features Compatible with all Atmel AVR Xplain MCU boards Full nine degree of freedom inertial sensing InvenSense three axis MEMS gyroscope IMU 3000 Kionix three axis MEMS accelerometer KXTF9 Honeywell three axis electronic compass HMC5883 All sensor drivers available within the Atmel AVR Software Framework Temperature sensing through IMU 3000 1 Introduction The Atmel Sensors Xplained series of development boards and software are designed to be plug compatible with all Atmel Xplain MCU boards providing a wide range of microcontroller performance depending on the application needs Atmel has partnered with leading suppliers of accelerometer gyroscope compass pressure and light sensors to provide a range of sensor boards that enable easy evaluation and development with a wide range of Atmel controller solutions To accelerate development with these sensor based solutions Atmel has worked with its partners to make the necessary sensor drivers available as part of the Atmel AVR Studio development environment and the AVR Software Framework The drivers are available directly from Atmel and provide basic interface functionality with both raw data and calibrated engineering units outputs integrated into a standard API The Atmel Inertial Two Sensors Xplained development board delivers a full nine degree of freedom sensor platform combining an acceleromet2. Interrupt Test Points md Test Points ATAVRSBIN2 B O809rev3 Be akset HOOO AIMEL 5 E AIMEL T 5 1 3 C options In the as shipped configuration the KXTF9 accelerometer is connected to the auxiliary C bus that is controlled by the IMU 3000 gyroscope The IMU 3000 will pass data from the primary C bus directly through to the KXTF9 This allows the Digital Motion Processor in the IMU 3000 to directly control the KXTF9 See the IMU 3000 datasheet for further details on this feature If it is desired to connect the KXTF9 directly to the MCU IC data bus remove the two zero ohm resistors R8 and R9 and insert them into positions R5 and R6 This will then bypass the IMU 3000 and allow direct control of the KXTF9 5 1 4 Regulator power control In normal operation the Regulator Enable input on the voltage regulator is pulled up by resistor R10 This pull up is controlled by pin 8 on the J2 digital header which is normally in high impedance mode If it is desired to power cycle the sensor board switch pin 8 to ground This will disable the regulator and turn off all the sensors 6 AVR4018 8369A AVR 01 11 8369A AVR 01 11 AVR4018 EVALUATION BOARD KIT IMPORTANT NOTICE This evaluation board kit is intended for use for FURTHER ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY It is not a finished product and may not yet comply with some or any technical or legal requirements
3. 85748 Garching b Munich Chou ku Tokyo 104 0033 Tel 1 408 441 0311 Kwun Tong Kowloon GERMANY JAPAN Fax 1 408 487 2600 HONG KONG Tel 49 89 31970 0 Tel 81 3523 3551 www atmel com Tel 852 2245 6100 Fax 49 89 3194621 Fax 81 3523 7581 Fax 852 2722 1369 2011 Atmel Corporation All rights reserved Rev CORP072610 Atmel Atmel logo and combinations thereof AVR AVR logo and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries Other terms and product names may be trademarks of others Disclaimer The information in this document is provided in connection with Atmel products No license express or implied by estoppel or otherwise to any intellectual property right is granted by this document or in connection with the sale of Atmel products EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT INDIRECT CONSEQUENTIAL PUNITIVE SPECIAL OR INCIDENTAL DAMAGES INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS AND PROFITS BUSINESS INTERRUPTION OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT EVEN IF ATMEL HAS BEEN ADV
4. ISED OF THE POSSIBILITY OF SUCH DAMAGES Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice Atmel does not make any commitment to update the information contained herein Unless specifically provided otherwise Atmel products are not suitable for and shall not be used in automotive applications Atmel products are not intended authorized or warranted for use as components in applications intended to support or sustain life 8369A AVR 01 11
5. VR4018 Figure 4 1 shows the physical arrangement of the Inertial Two Sensors Xplained development board Note that all three sensors have their X Y and Z axis aligned and a symbol is provided to indicate their directional alignment Figure 4 1 Sensor arrangement Board LES ROGO Alignment S Ma ma Ae wa Indicator R2 Ri TT Sie s JE la n Sensor Alignment amp 94V 0 2 ox GYR Indicator bkan S Wits uyta 2 wy mer e ACC as ce ie i ast HMC5883L ATAVRSBIN2 oo The Inertial Two Sensors Xplained development board must be attached to the correct headers on the Xplain MCU board to ensure proper operation All the Sensors Xplained development boards attach to headers J1 and J2 on the MCU boards anda board alignment indicator is printed on the board to aid correct alignment As an example Figure 4 2 shows the orientation of the similar Atmel Inertial One Sensors Xplained development board when attached to the Atmel UC3 LO Xplained MCU board Figure 4 2 Correct board attachment orientation Board Alignment Indicators 0 2 A a a EEEN 5 VUSga8e Os w SUNS e Ors s COZ SRA AUTH TT t RSBINI G SECRE Ter p oT9irevt Sas TI 4o AIMEL ae 5 Schematic Figure 5 1 shows the schematic for the Inertial Two Sensors Xplained development board and Table 5 1 gives the I C addresses for the three sensors NOTE The I C pull up resistors are included on the Inertial Two Sens
6. er compass gyroscope and temperature sensing that is ideal for developing motion sensing or user interface applications ATMEL 8 bit AVR Microcontrollers Application Note Rev 8369A AVR 01 11 2 Related items 2 1 Application notes 3 Description AIMEL T e Sensors Xplained Software Users Guide AVR4016 e Sensors Xplained Atmel Data Visualizer AVR4017 e Sensors Xplained Sensor Top Board Design Notes AVR4014 The Atmel Inertial Two Sensors Xplained development board provides full nine degree of freedom sensing capability from a set of three integrated three axis inertial sensors The sensors are connected via the C serial digital interface through a common header that is compatible with the full range of Atmel Xplain MCU boards This sensor cluster is well suited for cell phones handheld devices computer peripherals man machine interfaces virtual reality features and game controllers The sensors described in the following sections are incorporated into this development board and detailed explanations of their operation can be obtained from the relevant partner s component datasheets 3 1 Three axis gyroscope from InvenSense IMU 3000 The InvenSense IMU 3000 is a single chip digital output three axis MEMS gyroscope IC and Digital Motion Processor hardware accelerator engine with a secondary C port that interfaces to the digital accelerometer to deliver a complete si
7. ors Xplained board Figure 5 1 Inertial Two schematic Gyroscope HMCS5883L Magnetometer 2x5 Female Header HEADER 2x5 Accelerometer ANALOG HEADER Do Not Insert 4 AVR4018 8369A AVR 01 11 AVR4018 Table 5 1 Sensor I C addresses 5 1 Circuit configuration options 5 1 1 Power supply options 5 1 2 Test points 8369A AVR 01 11 A number of hardware options are available on the Inertial Two Sensors Xplained development board to allow investigation of the sensors functioning Theses options are described below The power supplied to the digital header on the Xplained series of sensor boards is nominally set to 3 3V The Inertial Two Sensors Xplained development board has an onboard 2 5V regulator to supply power to all three sensors The current from the regulator is supplied to the sensors through R3 a zero ohm resistor This resistor can be removed and replaced with a current monitor if required to investigate the sensor power consumption If it is desired to bypass the onboard regulator R3 can be removed and a zero ohm resistor placed in position R4 This will now supply the sensors directly from the 3 3V Xplain MCU board supply A number of test points are available for use with an oscilloscope to investigate the functioning of the sensors Figure 5 2 shows the physical locations of the test points on the board Figure 5 2 Locations of test points Power And W87 Sensor I2C
8. that are applicable to finished products including without limitation directives regarding electromagnetic compatibility recycling WEEE FCC CE or UL except as may be otherwise noted on the board kit Atmel supplied this board kit AS IS without any warranties with all faults at the buyer s and further users sole risk The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies Atmel from all claims arising from the handling or use of the goods Due to the open construction of the product it is the users responsibility to take any and all appropriate precautions with regard to electrostatic discharge and any other technical or legal concerns EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER USER NOR ATMEL SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES No license is granted under any patent right or other intellectual property right of Atmel covering or relating to any machine process or combination in which such Atmel products or services might be or are used Mailing Address Atmel Corporation 2325 Orchard Parkway San Jose CA 95131 AMEL r T Atmel Corporation Atmel Asia Limited Atmel Munich GmbH Atmel Japan 2325 Orchard Parkway Unit 01 5 amp 16 19F Business Campus 9F Tonetsu Shinkawa Bldg San Jose CA 95131 BEA Tower Milennium City 5 Parkring 4 1 24 8 Shinkawa USA 418 Kwun Tong Road D
9. x axis sensor fusion output to its primary I C port By providing an integrated sensor fusion output the IMU 3000 offloads the intensive motion processing computation requirements from the host processor reducing the need for frequent polling of the motion sensor output 3 2 Three axis accelerometer from Kionix KXTF9 1026 The Kionix KXTF9 is a three axis 2g 4g or 8g MEMS accelerometer with integrated orientation tap double tap and activity detecting algorithms An internal ASIC device packaged with the sense element provides signal conditioning and intelligent user programmable application algorithms An IC interface is used to communicate with the chip to configure and check updates to the orientation Directional Tap detection and activity monitoring algorithms 3 3 Three axis electronic compass from Honeywell HMC5883L 2 AVR4018 The Honeywell HMC5883L is a three axis magnetic sensor that includes Honeywell s state of the art high resolution magneto resistive sensors with automatic degaussing demagnetizing strap drivers offset cancellation and a 12 bit ADC for high resolution earth field sensing Utilizing Honeywell s anisotropic magneto resistive AMR technology the solid state HMC5883L feature advanced precision in axis sensitivity and linearity and is designed to measure both the direction and the magnitude of the Earth s magnetic fields 8369A AVR 01 11 4 Hardware layout 8369A AVR 01 11 A
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