1.1嵌入式系统的广泛应用-浙江大学现代教务管理系统.doc

本 科 生 毕 业 论 文（设计） 题 目  MERGEFIELD \题目 基于三星嵌入式平台的传感器驱动 开发及测试 Sensor Driver Development and Test Based On Samsung Embedded Platform 姓名学号 吴陈炜 3080102786 指导教师 金心宇 教授 年级专业 08级信息与通信工程 所在学院 信息与电子工程学系 摘要 以平板电脑、智能手机为代表嵌入式便携设备是时下主流的消费类电子产品。与PC平台不同，嵌入式便携设备通常采用以Linux内核为基础的Android等更加适合其处理器架构的操作系统。 传感器设备是便携设备中提高用户体验的重要组成部分。Android支持加速度传感器、磁传感器、陀螺仪传感器组成的九轴传感器。九轴传感器在Linux内核层通过I2C协议与处理器通信，向上层提供数据完成数据融合。 TC4项目是Samsung半导体中国研究所针对Exynos4x12多核应用处理器的开发成立的项目。该项目将在Samsung的平板电脑平台上首次加入九轴传感器。本文就将研究在TC4平台上九轴传感器驱动的实现方法，并且在硬件上得到验证，最终给出测试结果。 关键词：嵌入式系统 设备驱动 九轴传感器 Abstract Tablet , smart phone on behalf of portable embedded devices, have been popular consumer electronic products. Different from personal computer, portable embedded devices tend to ship operating systems which are more suitable to the architecture of application processor, such as Android, a Linux kernel based OS. Sensors are important parts of portable devices which could improve user experience. Android supports nine-axis sensor that is composed of a accelerometer, a magnetic field and a gyroscope. In the kernel layer based on Linux in Android OS, the nine-axis sensor communicates with the processor through I2C protocol providing raw data for the data fusion in upper layers. TC4 is the project established in Samsung Semiconductor China Research Center for the design and solution of a multi-core processor named Exynos 4x12. In this project 9-axis sensor will be firstly applied in Samsung tablet. This paper studies the method of driver for 9-axis sensor, and shows the test results obtained in hardware verification. Keywords: Embedded system Device driver 9-axis sensor 目录 TOC \o 1-3 \h \u  HYPERLINK \l _Toc25676 第一章 引言  PAGEREF _Toc25676 1  HYPERLINK \l _Toc11476 1.1背景  PAGEREF _Toc11476 1  HYPERLINK \l _Toc17390 1.1.1 嵌入式系统的广