debugging on capacitive touch screen
来源:互联网 发布:知乎 lse mim 编辑:程序博客网 时间:2024/05/23 01:18
if you are the engineer for develop driver with a vendor who just enter into this area (junior vendor), the following experience might help.
1. android UI which handle the touch points is pretty mature. so don't quest on the up level applications.
2. all the accurate adjustment must be done by the vendor.
3. the request of 2. should be early done by vendor as possible.
Performance debugging.
1. I2C issues, touch pannel vendor should make sure all the time sequencing following the spec of Marvell.
the vendor is lazy doing on this, make sure the HW engineer stare at this
2. the touch pannel sometimes send wrong point to kernel, so vendor has responsibility to clear out the mistake point.
3. Kernel optimizing: a. the points should be around 50-60 every second enough for touch imput method, make sure the point sent by kernel satify this requirement.
b. turn on cpu caching config (PXA935 have this option, 310 dont)
c. raise cpu speed to highest when touch happen and restore it back when figure leaves (pxa935 cpu speed automatic adjusts by itself)
- debugging on capacitive touch screen
- ssd2531 Capacitive Touch Panel driver
- Touch Screen
- Touch screen
- touch-screen with Timer
- Designing for Touch Screen
- ARM9(S3C2440) Touch Screen
- ARM9(S3C2440) Touch Screen
- Touch screen Calibration
- Debugging Memory on Linux
- Remote Debugging on Android
- debugging on visual studio
- Debugging Chromium on Android
- Debugging Deadlocks on Android
- Debugging RxJava on Android
- touch screen注册字符设备
- BlackBerry to go touch-screen?
- touch sound& screen lock sound
- 多愁善感??
- ORACLE EXTENT MANAGEMENT和SEGMENT MANAGEMENT
- 9.25 JSON在服务器中的应用
- 家庭英语口语800句
- linux些许配置
- debugging on capacitive touch screen
- 莫恼歌
- VS2008水晶报表发布部总结
- Google Chrome的实现技术
- 团结就是力量
- 努力编程与编程高手之探索1
- LCD flicking issue - close
- Excel中的下拉表的操作
- 快要完工了,在黎明前的黑暗中静静等待