SlideShare a Scribd company logo
1 of 26
Introduction to Android G sensor I²C Driver on Android Bo-Yi Wu 2010.06.04 Gemtek Technology Co., Ltd
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
What’s G sensor & Application ,[object Object]
Orientation estimation
Orientation estimation
Stability check  ,[object Object],[object Object],[object Object]
Code Review
I²C : detection capability set i2c address value detect call back function detect address fill the structure i2c_board_info
New-style drivers vs Legacy drivers ,[object Object],[object Object]
New-style drivers: initial function  ,[object Object],[object Object],[object Object],[object Object],[object Object]
G Sensor: bma150_driver structure ,[object Object],Legacy driver probe: Callback for device binding (new-style drivers)  remove: Callback for device unbinding (new-style drivers) class :  What kind of i2c device we instantiate (for detect)  (1<<0) for sensor address_data: The I2C addresses to probe, ignore or force (for detect) id_table: List of I2C devices supported by this driver
Legacy driver: address_data
New-style drivers: address_data /* Internal numbers to terminate lists */ I2C_CLIENT_END :  0xfffeU I2C_CLIENT_INSMOD_1  ~  I2C_CLIENT_INSMOD_8 I2C_CLIENT_INSMOD_COMMON : define   structure address_data normal_i2c, probe, ignore value
I2c Driver: i2c_register_driver 1.  new style driver methods can't mix with legacy ones /* check bma150_driver is news style driver or not */ is_newstyle_driver (driver) 2.  /* check bma150_driver is Legacy style driver or not */ driver->attach_adapter || driver->detach_adapter || driver->detach_client 4.  /* add bma150 driver to list for i2c only */ INIT_LIST_HEAD (&driver->clients) 5.  /* Walk the adapters that are already present   */ class_for_each_device struct i2c_adapter *adapter = to_i2c_adapter(dev); struct i2c_driver *driver = data; 3.  /*  register driver with bus, and use  bus_add_driver () to add bus driver */ driver_register (&driver->driver);
I2c Driver: __attach_adapter ,[object Object],[object Object],[object Object],[object Object],[object Object],/* Because Legacy driver don’t have detect function */ if (!driver-> detect  || !address_data) return 0;
I2c Driver: i2c_detect ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I2c Driver: i2c_detect_address ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I2c Driver: i2c_new_device ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I2c Driver: i2c_device_match  ,[object Object],[object Object],[object Object],[object Object],[object Object]
I2c Driver:bma150_probe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I2c Driver: file_operations
Build Linux Kernel ,[object Object],[object Object],[object Object],[object Object]
Issue: can’t create device ,[object Object],[object Object],[object Object],[object Object]
Demo To Do: jni module
Reference ,[object Object]
[object Object]

More Related Content

What's hot

Embedded systems design @ defcon 2015
Embedded systems design @ defcon 2015Embedded systems design @ defcon 2015
Embedded systems design @ defcon 2015Rodrigo Almeida
 
建構嵌入式Linux系統於SD Card
建構嵌入式Linux系統於SD Card建構嵌入式Linux系統於SD Card
建構嵌入式Linux系統於SD Card艾鍗科技
 
Embedded systems development Defcon 19
Embedded systems development Defcon 19Embedded systems development Defcon 19
Embedded systems development Defcon 19Rodrigo Almeida
 
Intel galileo gen 2
Intel galileo gen 2Intel galileo gen 2
Intel galileo gen 2srknec
 
Project ACRN USB mediator introduction
Project ACRN USB mediator introductionProject ACRN USB mediator introduction
Project ACRN USB mediator introductionProject ACRN
 
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery Board
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery BoardProgramming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery Board
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery BoardGaurav Verma
 
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)Simen Li
 
使用XMPP進行遠端設備控制
使用XMPP進行遠端設備控制使用XMPP進行遠端設備控制
使用XMPP進行遠端設備控制艾鍗科技
 
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)Simen Li
 
Let's Play STM32
Let's Play STM32Let's Play STM32
Let's Play STM32Jay Chen
 
Project ACRN I2C mediator introduction
Project ACRN I2C mediator introductionProject ACRN I2C mediator introduction
Project ACRN I2C mediator introductionProject ACRN
 
Attack your Trusted Core
Attack your Trusted CoreAttack your Trusted Core
Attack your Trusted CoreDi Shen
 
Linux+sensor+device-tree+shell=IoT !
Linux+sensor+device-tree+shell=IoT !Linux+sensor+device-tree+shell=IoT !
Linux+sensor+device-tree+shell=IoT !Dobrica Pavlinušić
 
Project ACRN EtherCAT 101
Project ACRN EtherCAT 101Project ACRN EtherCAT 101
Project ACRN EtherCAT 101Project ACRN
 
Lee 2020 what the clock !
Lee 2020  what the clock !Lee 2020  what the clock !
Lee 2020 what the clock !Neil Armstrong
 
Kernel Recipes 2014 - Testing Video4Linux Applications and Drivers
Kernel Recipes 2014 - Testing Video4Linux Applications and DriversKernel Recipes 2014 - Testing Video4Linux Applications and Drivers
Kernel Recipes 2014 - Testing Video4Linux Applications and DriversAnne Nicolas
 
Advanced cfg bypass on adobe flash player 18 defcon russia 23
Advanced cfg bypass on adobe flash player 18 defcon russia 23Advanced cfg bypass on adobe flash player 18 defcon russia 23
Advanced cfg bypass on adobe flash player 18 defcon russia 23DefconRussia
 
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203Linaro
 

What's hot (20)

Embedded systems design @ defcon 2015
Embedded systems design @ defcon 2015Embedded systems design @ defcon 2015
Embedded systems design @ defcon 2015
 
建構嵌入式Linux系統於SD Card
建構嵌入式Linux系統於SD Card建構嵌入式Linux系統於SD Card
建構嵌入式Linux系統於SD Card
 
Embedded systems development Defcon 19
Embedded systems development Defcon 19Embedded systems development Defcon 19
Embedded systems development Defcon 19
 
Intel galileo gen 2
Intel galileo gen 2Intel galileo gen 2
Intel galileo gen 2
 
Project ACRN USB mediator introduction
Project ACRN USB mediator introductionProject ACRN USB mediator introduction
Project ACRN USB mediator introduction
 
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery Board
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery BoardProgramming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery Board
Programming the ARM CORTEX M3 based STM32F100RBT6 Value Line Discovery Board
 
What is CANopen? | ElmoMC
What is CANopen? | ElmoMCWhat is CANopen? | ElmoMC
What is CANopen? | ElmoMC
 
Intel galileo
Intel galileoIntel galileo
Intel galileo
 
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (3)
 
使用XMPP進行遠端設備控制
使用XMPP進行遠端設備控制使用XMPP進行遠端設備控制
使用XMPP進行遠端設備控制
 
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)
[嵌入式系統] MCS-51 實驗 - 使用 IAR (2)
 
Let's Play STM32
Let's Play STM32Let's Play STM32
Let's Play STM32
 
Project ACRN I2C mediator introduction
Project ACRN I2C mediator introductionProject ACRN I2C mediator introduction
Project ACRN I2C mediator introduction
 
Attack your Trusted Core
Attack your Trusted CoreAttack your Trusted Core
Attack your Trusted Core
 
Linux+sensor+device-tree+shell=IoT !
Linux+sensor+device-tree+shell=IoT !Linux+sensor+device-tree+shell=IoT !
Linux+sensor+device-tree+shell=IoT !
 
Project ACRN EtherCAT 101
Project ACRN EtherCAT 101Project ACRN EtherCAT 101
Project ACRN EtherCAT 101
 
Lee 2020 what the clock !
Lee 2020  what the clock !Lee 2020  what the clock !
Lee 2020 what the clock !
 
Kernel Recipes 2014 - Testing Video4Linux Applications and Drivers
Kernel Recipes 2014 - Testing Video4Linux Applications and DriversKernel Recipes 2014 - Testing Video4Linux Applications and Drivers
Kernel Recipes 2014 - Testing Video4Linux Applications and Drivers
 
Advanced cfg bypass on adobe flash player 18 defcon russia 23
Advanced cfg bypass on adobe flash player 18 defcon russia 23Advanced cfg bypass on adobe flash player 18 defcon russia 23
Advanced cfg bypass on adobe flash player 18 defcon russia 23
 
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203
Reliability, Availability, and Serviceability (RAS) on ARM64 status - SFO17-203
 

Viewers also liked

How to integrate front end tool via gruntjs
How to integrate front end tool via gruntjsHow to integrate front end tool via gruntjs
How to integrate front end tool via gruntjsBo-Yi Wu
 
advanced introduction to codeigniter
advanced introduction to codeigniteradvanced introduction to codeigniter
advanced introduction to codeigniterBo-Yi Wu
 
Introduction to Grunt.js on Taiwan JavaScript Conference
Introduction to Grunt.js on Taiwan JavaScript ConferenceIntroduction to Grunt.js on Taiwan JavaScript Conference
Introduction to Grunt.js on Taiwan JavaScript ConferenceBo-Yi Wu
 
Gearman work queue in php
Gearman work queue in phpGearman work queue in php
Gearman work queue in phpBo-Yi Wu
 
Introduction to MVC of CodeIgniter 2.1.x
Introduction to MVC of CodeIgniter 2.1.xIntroduction to MVC of CodeIgniter 2.1.x
Introduction to MVC of CodeIgniter 2.1.xBo-Yi Wu
 
Git flow 與團隊合作
Git flow 與團隊合作Git flow 與團隊合作
Git flow 與團隊合作Bo-Yi Wu
 
Why to choose laravel framework
Why to choose laravel frameworkWhy to choose laravel framework
Why to choose laravel frameworkBo-Yi Wu
 
PHP & JavaScript & CSS Coding style
PHP & JavaScript & CSS Coding stylePHP & JavaScript & CSS Coding style
PHP & JavaScript & CSS Coding styleBo-Yi Wu
 
用 Docker 改善團隊合作模式
用 Docker 改善團隊合作模式用 Docker 改善團隊合作模式
用 Docker 改善團隊合作模式Bo-Yi Wu
 
RESTful API Design & Implementation with CodeIgniter PHP Framework
RESTful API Design & Implementation with CodeIgniter PHP FrameworkRESTful API Design & Implementation with CodeIgniter PHP Framework
RESTful API Design & Implementation with CodeIgniter PHP FrameworkBo-Yi Wu
 
Write microservice in golang
Write microservice in golangWrite microservice in golang
Write microservice in golangBo-Yi Wu
 
Maintainable PHP Source Code
Maintainable PHP Source CodeMaintainable PHP Source Code
Maintainable PHP Source CodeBo-Yi Wu
 

Viewers also liked (12)

How to integrate front end tool via gruntjs
How to integrate front end tool via gruntjsHow to integrate front end tool via gruntjs
How to integrate front end tool via gruntjs
 
advanced introduction to codeigniter
advanced introduction to codeigniteradvanced introduction to codeigniter
advanced introduction to codeigniter
 
Introduction to Grunt.js on Taiwan JavaScript Conference
Introduction to Grunt.js on Taiwan JavaScript ConferenceIntroduction to Grunt.js on Taiwan JavaScript Conference
Introduction to Grunt.js on Taiwan JavaScript Conference
 
Gearman work queue in php
Gearman work queue in phpGearman work queue in php
Gearman work queue in php
 
Introduction to MVC of CodeIgniter 2.1.x
Introduction to MVC of CodeIgniter 2.1.xIntroduction to MVC of CodeIgniter 2.1.x
Introduction to MVC of CodeIgniter 2.1.x
 
Git flow 與團隊合作
Git flow 與團隊合作Git flow 與團隊合作
Git flow 與團隊合作
 
Why to choose laravel framework
Why to choose laravel frameworkWhy to choose laravel framework
Why to choose laravel framework
 
PHP & JavaScript & CSS Coding style
PHP & JavaScript & CSS Coding stylePHP & JavaScript & CSS Coding style
PHP & JavaScript & CSS Coding style
 
用 Docker 改善團隊合作模式
用 Docker 改善團隊合作模式用 Docker 改善團隊合作模式
用 Docker 改善團隊合作模式
 
RESTful API Design & Implementation with CodeIgniter PHP Framework
RESTful API Design & Implementation with CodeIgniter PHP FrameworkRESTful API Design & Implementation with CodeIgniter PHP Framework
RESTful API Design & Implementation with CodeIgniter PHP Framework
 
Write microservice in golang
Write microservice in golangWrite microservice in golang
Write microservice in golang
 
Maintainable PHP Source Code
Maintainable PHP Source CodeMaintainable PHP Source Code
Maintainable PHP Source Code
 

Similar to Introduction to Android G Sensor I²C Driver on Android

Sdk For Firmware Development
Sdk For Firmware DevelopmentSdk For Firmware Development
Sdk For Firmware DevelopmentRamesh Prasad
 
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack FirmwareSimen Li
 
Embedded system lab work
Embedded system lab workEmbedded system lab work
Embedded system lab workJIGAR MAKHIJA
 
Labs_BT_20221017.pptx
Labs_BT_20221017.pptxLabs_BT_20221017.pptx
Labs_BT_20221017.pptxssuserb4d806
 
3 g modem_tutorial
3 g modem_tutorial3 g modem_tutorial
3 g modem_tutorialaljarous
 
Linux SD/MMC device driver
Linux SD/MMC device driverLinux SD/MMC device driver
Linux SD/MMC device driver艾鍗科技
 
Android 5.0 Lollipop platform change investigation report
Android 5.0 Lollipop platform change investigation reportAndroid 5.0 Lollipop platform change investigation report
Android 5.0 Lollipop platform change investigation reporthidenorly
 
Android Things in action
Android Things in actionAndroid Things in action
Android Things in actionStefano Sanna
 
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OS
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OSBluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OS
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OSAustin Blackstone
 
Roll your own toy unix clone os
Roll your own toy unix clone osRoll your own toy unix clone os
Roll your own toy unix clone oseramax
 
망고100 보드로 놀아보자 15
망고100 보드로 놀아보자 15망고100 보드로 놀아보자 15
망고100 보드로 놀아보자 15종인 전
 
#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.hSilvaGraf83
 
#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.hMoseStaton39
 
Brillo/Weave Part 2: Deep Dive
Brillo/Weave Part 2: Deep DiveBrillo/Weave Part 2: Deep Dive
Brillo/Weave Part 2: Deep DiveJalal Rohani
 
JVM code reading -- C2
JVM code reading -- C2JVM code reading -- C2
JVM code reading -- C2ytoshima
 
Sprint 131
Sprint 131Sprint 131
Sprint 131ManageIQ
 

Similar to Introduction to Android G Sensor I²C Driver on Android (20)

Sdk For Firmware Development
Sdk For Firmware DevelopmentSdk For Firmware Development
Sdk For Firmware Development
 
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware
[ZigBee 嵌入式系統] ZigBee 應用實作 - 使用 TI Z-Stack Firmware
 
Embedded system lab work
Embedded system lab workEmbedded system lab work
Embedded system lab work
 
Labs_BT_20221017.pptx
Labs_BT_20221017.pptxLabs_BT_20221017.pptx
Labs_BT_20221017.pptx
 
Deep Learning Edge
Deep Learning Edge Deep Learning Edge
Deep Learning Edge
 
3 g modem_tutorial
3 g modem_tutorial3 g modem_tutorial
3 g modem_tutorial
 
I2c drivers
I2c driversI2c drivers
I2c drivers
 
Linux SD/MMC device driver
Linux SD/MMC device driverLinux SD/MMC device driver
Linux SD/MMC device driver
 
Android 5.0 Lollipop platform change investigation report
Android 5.0 Lollipop platform change investigation reportAndroid 5.0 Lollipop platform change investigation report
Android 5.0 Lollipop platform change investigation report
 
Android Things in action
Android Things in actionAndroid Things in action
Android Things in action
 
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OS
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OSBluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OS
Bluetooth World 2018 - Intro to Bluetooth Low Energy with Mbed OS
 
RamachandraParlapalli_RESUME
RamachandraParlapalli_RESUMERamachandraParlapalli_RESUME
RamachandraParlapalli_RESUME
 
Roll your own toy unix clone os
Roll your own toy unix clone osRoll your own toy unix clone os
Roll your own toy unix clone os
 
망고100 보드로 놀아보자 15
망고100 보드로 놀아보자 15망고100 보드로 놀아보자 15
망고100 보드로 놀아보자 15
 
Cariot
CariotCariot
Cariot
 
#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h
 
#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h#include stdio.h#include systypes.h#include syssocket.h
#include stdio.h#include systypes.h#include syssocket.h
 
Brillo/Weave Part 2: Deep Dive
Brillo/Weave Part 2: Deep DiveBrillo/Weave Part 2: Deep Dive
Brillo/Weave Part 2: Deep Dive
 
JVM code reading -- C2
JVM code reading -- C2JVM code reading -- C2
JVM code reading -- C2
 
Sprint 131
Sprint 131Sprint 131
Sprint 131
 

More from Bo-Yi Wu

Drone CI/CD 自動化測試及部署
Drone CI/CD 自動化測試及部署Drone CI/CD 自動化測試及部署
Drone CI/CD 自動化測試及部署Bo-Yi Wu
 
用 Go 語言打造多台機器 Scale 架構
用 Go 語言打造多台機器 Scale 架構用 Go 語言打造多台機器 Scale 架構
用 Go 語言打造多台機器 Scale 架構Bo-Yi Wu
 
Job Queue in Golang
Job Queue in GolangJob Queue in Golang
Job Queue in GolangBo-Yi Wu
 
Golang Project Layout and Practice
Golang Project Layout and PracticeGolang Project Layout and Practice
Golang Project Layout and PracticeBo-Yi Wu
 
Introduction to GitHub Actions
Introduction to GitHub ActionsIntroduction to GitHub Actions
Introduction to GitHub ActionsBo-Yi Wu
 
Drone 1.0 Feature
Drone 1.0 FeatureDrone 1.0 Feature
Drone 1.0 FeatureBo-Yi Wu
 
Drone CI/CD Platform
Drone CI/CD PlatformDrone CI/CD Platform
Drone CI/CD PlatformBo-Yi Wu
 
GraphQL IN Golang
GraphQL IN GolangGraphQL IN Golang
GraphQL IN GolangBo-Yi Wu
 
Go 語言基礎簡介
Go 語言基礎簡介Go 語言基礎簡介
Go 語言基礎簡介Bo-Yi Wu
 
drone continuous Integration
drone continuous Integrationdrone continuous Integration
drone continuous IntegrationBo-Yi Wu
 
Gorush: A push notification server written in Go
Gorush: A push notification server written in GoGorush: A push notification server written in Go
Gorush: A push notification server written in GoBo-Yi Wu
 
用 Drone 打造 輕量級容器持續交付平台
用 Drone 打造輕量級容器持續交付平台用 Drone 打造輕量級容器持續交付平台
用 Drone 打造 輕量級容器持續交付平台Bo-Yi Wu
 
用 Go 語言 打造微服務架構
用 Go 語言打造微服務架構用 Go 語言打造微服務架構
用 Go 語言 打造微服務架構Bo-Yi Wu
 
Introduction to Gitea with Drone
Introduction to Gitea with DroneIntroduction to Gitea with Drone
Introduction to Gitea with DroneBo-Yi Wu
 
運用 Docker 整合 Laravel 提升團隊開發效率
運用 Docker 整合 Laravel 提升團隊開發效率運用 Docker 整合 Laravel 提升團隊開發效率
運用 Docker 整合 Laravel 提升團隊開發效率Bo-Yi Wu
 
用 Go 語言實戰 Push Notification 服務
用 Go 語言實戰 Push Notification 服務用 Go 語言實戰 Push Notification 服務
用 Go 語言實戰 Push Notification 服務Bo-Yi Wu
 
用 Go 語言打造 DevOps Bot
用 Go 語言打造 DevOps Bot用 Go 語言打造 DevOps Bot
用 Go 語言打造 DevOps BotBo-Yi Wu
 
A painless self-hosted Git service: Gitea
A painless self-hosted Git service: GiteaA painless self-hosted Git service: Gitea
A painless self-hosted Git service: GiteaBo-Yi Wu
 
Docker 基礎介紹與實戰
Docker 基礎介紹與實戰Docker 基礎介紹與實戰
Docker 基礎介紹與實戰Bo-Yi Wu
 
How to choose web framework
How to choose web frameworkHow to choose web framework
How to choose web frameworkBo-Yi Wu
 

More from Bo-Yi Wu (20)

Drone CI/CD 自動化測試及部署
Drone CI/CD 自動化測試及部署Drone CI/CD 自動化測試及部署
Drone CI/CD 自動化測試及部署
 
用 Go 語言打造多台機器 Scale 架構
用 Go 語言打造多台機器 Scale 架構用 Go 語言打造多台機器 Scale 架構
用 Go 語言打造多台機器 Scale 架構
 
Job Queue in Golang
Job Queue in GolangJob Queue in Golang
Job Queue in Golang
 
Golang Project Layout and Practice
Golang Project Layout and PracticeGolang Project Layout and Practice
Golang Project Layout and Practice
 
Introduction to GitHub Actions
Introduction to GitHub ActionsIntroduction to GitHub Actions
Introduction to GitHub Actions
 
Drone 1.0 Feature
Drone 1.0 FeatureDrone 1.0 Feature
Drone 1.0 Feature
 
Drone CI/CD Platform
Drone CI/CD PlatformDrone CI/CD Platform
Drone CI/CD Platform
 
GraphQL IN Golang
GraphQL IN GolangGraphQL IN Golang
GraphQL IN Golang
 
Go 語言基礎簡介
Go 語言基礎簡介Go 語言基礎簡介
Go 語言基礎簡介
 
drone continuous Integration
drone continuous Integrationdrone continuous Integration
drone continuous Integration
 
Gorush: A push notification server written in Go
Gorush: A push notification server written in GoGorush: A push notification server written in Go
Gorush: A push notification server written in Go
 
用 Drone 打造 輕量級容器持續交付平台
用 Drone 打造輕量級容器持續交付平台用 Drone 打造輕量級容器持續交付平台
用 Drone 打造 輕量級容器持續交付平台
 
用 Go 語言 打造微服務架構
用 Go 語言打造微服務架構用 Go 語言打造微服務架構
用 Go 語言 打造微服務架構
 
Introduction to Gitea with Drone
Introduction to Gitea with DroneIntroduction to Gitea with Drone
Introduction to Gitea with Drone
 
運用 Docker 整合 Laravel 提升團隊開發效率
運用 Docker 整合 Laravel 提升團隊開發效率運用 Docker 整合 Laravel 提升團隊開發效率
運用 Docker 整合 Laravel 提升團隊開發效率
 
用 Go 語言實戰 Push Notification 服務
用 Go 語言實戰 Push Notification 服務用 Go 語言實戰 Push Notification 服務
用 Go 語言實戰 Push Notification 服務
 
用 Go 語言打造 DevOps Bot
用 Go 語言打造 DevOps Bot用 Go 語言打造 DevOps Bot
用 Go 語言打造 DevOps Bot
 
A painless self-hosted Git service: Gitea
A painless self-hosted Git service: GiteaA painless self-hosted Git service: Gitea
A painless self-hosted Git service: Gitea
 
Docker 基礎介紹與實戰
Docker 基礎介紹與實戰Docker 基礎介紹與實戰
Docker 基礎介紹與實戰
 
How to choose web framework
How to choose web frameworkHow to choose web framework
How to choose web framework
 

Recently uploaded

The Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsThe Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsPixlogix Infotech
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity PlanDatabarracks
 
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxUse of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxLoriGlavin3
 
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024BookNet Canada
 
2024 April Patch Tuesday
2024 April Patch Tuesday2024 April Patch Tuesday
2024 April Patch TuesdayIvanti
 
What's New in Teams Calling, Meetings and Devices March 2024
What's New in Teams Calling, Meetings and Devices March 2024What's New in Teams Calling, Meetings and Devices March 2024
What's New in Teams Calling, Meetings and Devices March 2024Stephanie Beckett
 
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxMerck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxLoriGlavin3
 
So einfach geht modernes Roaming fuer Notes und Nomad.pdf
So einfach geht modernes Roaming fuer Notes und Nomad.pdfSo einfach geht modernes Roaming fuer Notes und Nomad.pdf
So einfach geht modernes Roaming fuer Notes und Nomad.pdfpanagenda
 
Long journey of Ruby standard library at RubyConf AU 2024
Long journey of Ruby standard library at RubyConf AU 2024Long journey of Ruby standard library at RubyConf AU 2024
Long journey of Ruby standard library at RubyConf AU 2024Hiroshi SHIBATA
 
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxPasskey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxLoriGlavin3
 
From Family Reminiscence to Scholarly Archive .
From Family Reminiscence to Scholarly Archive .From Family Reminiscence to Scholarly Archive .
From Family Reminiscence to Scholarly Archive .Alan Dix
 
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...AliaaTarek5
 
Take control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteTake control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteDianaGray10
 
The State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxThe State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxLoriGlavin3
 
Visualising and forecasting stocks using Dash
Visualising and forecasting stocks using DashVisualising and forecasting stocks using Dash
Visualising and forecasting stocks using Dashnarutouzumaki53779
 
A Deep Dive on Passkeys: FIDO Paris Seminar.pptx
A Deep Dive on Passkeys: FIDO Paris Seminar.pptxA Deep Dive on Passkeys: FIDO Paris Seminar.pptx
A Deep Dive on Passkeys: FIDO Paris Seminar.pptxLoriGlavin3
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024BookNet Canada
 
DSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningDSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningLars Bell
 
Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rick Flair
 
Fact vs. Fiction: Autodetecting Hallucinations in LLMs
Fact vs. Fiction: Autodetecting Hallucinations in LLMsFact vs. Fiction: Autodetecting Hallucinations in LLMs
Fact vs. Fiction: Autodetecting Hallucinations in LLMsZilliz
 

Recently uploaded (20)

The Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and ConsThe Ultimate Guide to Choosing WordPress Pros and Cons
The Ultimate Guide to Choosing WordPress Pros and Cons
 
How to write a Business Continuity Plan
How to write a Business Continuity PlanHow to write a Business Continuity Plan
How to write a Business Continuity Plan
 
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptxUse of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
Use of FIDO in the Payments and Identity Landscape: FIDO Paris Seminar.pptx
 
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
Transcript: New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
 
2024 April Patch Tuesday
2024 April Patch Tuesday2024 April Patch Tuesday
2024 April Patch Tuesday
 
What's New in Teams Calling, Meetings and Devices March 2024
What's New in Teams Calling, Meetings and Devices March 2024What's New in Teams Calling, Meetings and Devices March 2024
What's New in Teams Calling, Meetings and Devices March 2024
 
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptxMerck Moving Beyond Passwords: FIDO Paris Seminar.pptx
Merck Moving Beyond Passwords: FIDO Paris Seminar.pptx
 
So einfach geht modernes Roaming fuer Notes und Nomad.pdf
So einfach geht modernes Roaming fuer Notes und Nomad.pdfSo einfach geht modernes Roaming fuer Notes und Nomad.pdf
So einfach geht modernes Roaming fuer Notes und Nomad.pdf
 
Long journey of Ruby standard library at RubyConf AU 2024
Long journey of Ruby standard library at RubyConf AU 2024Long journey of Ruby standard library at RubyConf AU 2024
Long journey of Ruby standard library at RubyConf AU 2024
 
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptxPasskey Providers and Enabling Portability: FIDO Paris Seminar.pptx
Passkey Providers and Enabling Portability: FIDO Paris Seminar.pptx
 
From Family Reminiscence to Scholarly Archive .
From Family Reminiscence to Scholarly Archive .From Family Reminiscence to Scholarly Archive .
From Family Reminiscence to Scholarly Archive .
 
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...
(How to Program) Paul Deitel, Harvey Deitel-Java How to Program, Early Object...
 
Take control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test SuiteTake control of your SAP testing with UiPath Test Suite
Take control of your SAP testing with UiPath Test Suite
 
The State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptxThe State of Passkeys with FIDO Alliance.pptx
The State of Passkeys with FIDO Alliance.pptx
 
Visualising and forecasting stocks using Dash
Visualising and forecasting stocks using DashVisualising and forecasting stocks using Dash
Visualising and forecasting stocks using Dash
 
A Deep Dive on Passkeys: FIDO Paris Seminar.pptx
A Deep Dive on Passkeys: FIDO Paris Seminar.pptxA Deep Dive on Passkeys: FIDO Paris Seminar.pptx
A Deep Dive on Passkeys: FIDO Paris Seminar.pptx
 
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
New from BookNet Canada for 2024: BNC CataList - Tech Forum 2024
 
DSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine TuningDSPy a system for AI to Write Prompts and Do Fine Tuning
DSPy a system for AI to Write Prompts and Do Fine Tuning
 
Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...Rise of the Machines: Known As Drones...
Rise of the Machines: Known As Drones...
 
Fact vs. Fiction: Autodetecting Hallucinations in LLMs
Fact vs. Fiction: Autodetecting Hallucinations in LLMsFact vs. Fiction: Autodetecting Hallucinations in LLMs
Fact vs. Fiction: Autodetecting Hallucinations in LLMs
 

Introduction to Android G Sensor I²C Driver on Android

  • 1. Introduction to Android G sensor I²C Driver on Android Bo-Yi Wu 2010.06.04 Gemtek Technology Co., Ltd
  • 2.
  • 3.
  • 6.
  • 8. I²C : detection capability set i2c address value detect call back function detect address fill the structure i2c_board_info
  • 9.
  • 10.
  • 11.
  • 13. New-style drivers: address_data /* Internal numbers to terminate lists */ I2C_CLIENT_END : 0xfffeU I2C_CLIENT_INSMOD_1 ~ I2C_CLIENT_INSMOD_8 I2C_CLIENT_INSMOD_COMMON : define structure address_data normal_i2c, probe, ignore value
  • 14. I2c Driver: i2c_register_driver 1. new style driver methods can't mix with legacy ones /* check bma150_driver is news style driver or not */ is_newstyle_driver (driver) 2. /* check bma150_driver is Legacy style driver or not */ driver->attach_adapter || driver->detach_adapter || driver->detach_client 4. /* add bma150 driver to list for i2c only */ INIT_LIST_HEAD (&driver->clients) 5. /* Walk the adapters that are already present */ class_for_each_device struct i2c_adapter *adapter = to_i2c_adapter(dev); struct i2c_driver *driver = data; 3. /* register driver with bus, and use bus_add_driver () to add bus driver */ driver_register (&driver->driver);
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 22.
  • 23.
  • 24. Demo To Do: jni module
  • 25.
  • 26.