原标题：ST STEVAL-MKI062V2 3D iNEMO传感器开发方案

　　ST公司的LSM303DLH具有3D数字线性加速度传感器和3D数字磁传感器特性的iNEMO传感器模块。数字线性加速度传感器满刻度为±2g/±4g/±8g，磁传感器满刻度为±1.3/±1.9/±2.5/±4.0/±4.7/±5,6/±8.1高斯。模块还集成了支持标准模式(100kHz)和快速模式(400kHz)的I2C串行总线，模拟电压为2.5V到3.3V，数字电源I/O为1.8V，3路磁场通路和3路加速度通路，16位数据输出，主要用在运动检测，自由跌落检测，游戏和虚拟输入，显示取向和震动监测和补偿等。本文介绍了LSM303DLH 主要特性，方框图，电连接图以及STEVAL-MKI062V2开发板主要特性，电路图和材料清单。

　　The LSM303DLH is a system-in-package featuring a 3D digital linear acceleration sensor and a 3D digital magnetic sensor. The various sensing elements are manufactured using specialized micromachining processes, while the IC interfaces are realized using a CMOS technology that allows the design of a dedicated circuit which is trimmed to better match the sensing element characteristics. The LSM303DLH has a linear acceleration full-scale of ±2 g / ±4 g / ±8 g and a magnetic field full-scale of ±1.3 / ±1.9 / ±2.5 / ±4.0 / ±4.7 / ±5,6 / ±8.1 gauss, both fully selectable by the user. The LSM303DLH includes an I2C serial bus interface that supports standard mode (100 kHz) and fast mode (400 kHz). The internal self-test capability allows the user to check the functioning of the whole module in the final application. The system can be configured to generate an interrupt signal by inertial wakeup/free-fall events, as well as by the position of the device itself. Thresholds and timing of interrupt generators are programmable on the fly by the end user. Magnetic and accelerometer parts can be enabled or put in power-down mode separately. The LSM303DLH is available in a plastic land grid array (LGA) package, and is guaranteed to operate over an extended temperature range from -30 to +85℃.

　　LSM303DLH主要特性：

　　■ Analog supply voltage: 2.5V to 3.3V

　　■ Digital supply voltage IOs: 1.8V

　　■ Power-down mode

　　■ 3 magnetic field channels and 3 acceleration channels

　　■ ±1.3 to ±8,1 gauss magnetic field full-scale

　　■ ±2g/±4g/±8g dynamically selectable fullscale

　　■ 16-bit data out

　　■ I2C serial interface

　　■ 2 independent programmable interrupt generators for free-fall and motion detection

　　■ Embedded self-test

　　■ Accelerometer sleep-to-wakeup function

　　■ 6D orientation detection

　　■ ECOPACK® RoHS and “Green” compliant

　　LSM303DLH应用：

　　■ Compensated compassing

　　■ Map rotation

　　■ Position detection

　　■ Motion-activated functions

　　■ Free-fall detection

　　■ Intelligent power-saving for handheld devices

　　■ Display orientation

　　■ Gaming and virtual reality input devices

　　■ Impact recognition and logging

　　■ Vibration monitoring and compensation

　　图1。LSM303DLH方框图

　　图2。LSM303DLH电连接图(1)：I2C快速模式

　　图3。LSM303DLH电连接图(2)

　　STEVAL-MKI062V2开发板

　　The STEVAL-MKI062V2 is the second generation of the iNEMO™ module family. It combines accelerometers, gyroscopes and magnetometers with pressure and temperature sensors to provide 3-axis sensing of linear, angular and magnetic motion, complemented with temperature and barometer/altitude readings, representing the new ST 10-DOF (degrees of freedom) platform.

　　Based on the previous version, the STEVALMKI062V2 represents another step forward in miniaturization, integrating five ST sensors: a 2- axis roll-and-pitch gyroscope, a 1-axis yaw gyroscope, a 6-axis geomagnetic module, a pressure sensor and a temperature sensor.

　　This 10-DOF inertial system represents a complete hardware platform which can be used in numerous applications such as virtual reality, augmented reality, image stabilization, human machine interfaces and robotics.

　　A complete set of communication interfaces with various power supply options in a small-size form factor (4 x 4 cm) make iNEMO V2 a flexible and open demonstration platform.

　　To aid in user development and analysis, the STEVAL-MKI062V2 demonstration kit includes a PC GUI for sensor output display and a firmware library to facilitate the use of the demonstration board features.

　　STEVAL-MKI062V2开发板主要特性：

　　■ Two power supply options: power connector, USB connector

　　■ STM32F103RE: high-density performance line ARM-based 32-bit MCU with 256 to 512 kB Flash, USB, CAN, 11 timers, 3 ADCs and 13 communication interfaces

　　■ LPR430AL: 2-axis gyro (roll, pitch) 300°/s full scale with analog output and optional

　　additional filters

　　■ LY330ALH: yaw-axis gyro 300°/s full scale with analog output and optional additional filters

　　■ LSM303DLH: 6-axis geomagnetic module:±2 g / ±4 g / ±8 g linear acceleration full scale, magnetic field configurable full scale ±1.3 to ± 8.1 Gauss (max), I2C digital output

　　■ LPS001DL: pressure sensor 300-1100 mbar absolute full scale with I2C digital output and barometer

　　■ STLM75: temperature sensor with –55 to +125℃ range and I2C digital interface

　　■ Extended connector for wireless connectivity

　　■ MicroSD™ card slot

　　■ COM connector with RTS and CTS signals

　　■ USB 2.0 full speed connection

　　■ Reset button

　　■ User LED and button

　　■ RoHS Compliant

　　图4。STEVAL-MKI062V2开发板外形图

　　STEVAL-MKI062V2开发板材料清单(BOM)：