妮仔的學習筆記

2010年7月18日星期日

echo 7 > proc/sys/kernel/printk

android: lcd backlight

1. packages/apps/Settings/src/com/Android/settings/ BrightnessPreference.java 2.frameworks/base/core/java/Android/os/ IPowerManager.aidl...
*build busybox and create rootfs for nfs

step1: build busybox #make menuconfig CROSS_COMPILE=arm-none-linux- #make CROSS_COMPILE=arm-none-linux #make install CROSS_COMPILE=arm-none-...
linux and android power management information

@ Normal Linux suspend - Source code : kernel_src/kernel/main.c kernel_src/kernel/arch/arm/mach-xxx/pm.c - usersp...
* Audio: I2S and Linux sound system

System: ------------ -------- | Embedded | ---->I2S | audio | I2C | codec | ----->AMP -->speaker -----...
audio: concept

@Fetures Overview The features supported by ALSA SoC Audio driver are: -Supports audio codec in ALSA SoC framework. -Multiple ...
cscope & ctags

find . -name '*.h' -o -name '*.c' | cscope -i - -b & ----------------------------------------------------- @@cscope sett...
vim & cscope

reference: http://blog.chhsu.org/2009/03/multi-projects-of-vim-using-cscope.html http://rickey-nctu.blogspot.com/2009/02/vim-srcexpl.html In...
Using printk debug

Using printk debug There three method 1. KERN_EMERG to KERN_DEBUG - pr_energe to pr_debug 2. Change the kernel command line - loglev...
android JB build error

export SHELL=/bin/bash
更新git

使用的是ubuntu 10.04,出現這個問題 fatal: git 1.7.2 or later required git版本太舊處理的方法如下: $ sudo add-apt-repository ppa:git-core/ppa $ sudo apt-g...

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