Implementing 3-Axis Accelerometer and Sensor HAL on Tiny4412 Platform

• Main Authors: Zong-syuan Yang, 楊宗烜
• Other Authors: Bin-Chang Chieu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/61263432489947887718

碩士 === 國立臺灣科技大學 === 電子工程系 === 102 === Breakthrough in the information update rate and age of widespread application of wearable devices , smart phones , smart appliances system has gradually become the future trend , in addition to gradually create from many brands , to overthrow the old large traditional phone system factory Nokia, and Apple competing forces leading factory Android system 's top research and development plant in Samsung, HTC and iOS system , the next few years will be the smart phone system appliances, wearable device combination products for the future mainstream processes and trends , gesture discrimination operations are more likely to integrate various wearable devices, so common in this thesis focus on g-sensor analysis . In this paper, the use of Tiny4412 friendlyARM equipped Samsung Exynos4412 quad-core processor to do as a development platform , using Android version 4.2.2 (Jelly Bean), core version of Linux-3.5.0. The objective of this paper is to triaxial accelerometer mma7660fc driver ported to Linux-3.5.0 and write and modify Sensor HAL architecture , allowed to achieve data transfer acceleration sensor and the screen display Android achieved in accordance with the user to make the appropriate operating mode flip the screen . Furthermore , this paper attempts to App in user space application to verify whether the correct transmission of acceleration values . Finally, this paper to write a small App game allows the overall system to make substantive experience. Sensor Driver, IIC, Sensor HAL, Application made to modify the whole structure analysis and implementation .