<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[pangsurong的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/pangsurong</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; pangsurong]]></copyright><item><title><![CDATA[（转）高通LCD的pwm背光驱动]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/86582881</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/86582881</guid><author>pangsurong</author><pubDate>Mon, 21 Jan 2019 19:23:33 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/linhaostudy/p/9173117.html

阅读目录

发生异常的现象：
	背光的控制方式：
	lcd背光控制调用流程：
	LCD背光驱动
	patch地址
 

正文

回到顶部

发生异常的现象：

msm8953 lcd在快速亮灭的情况下背光概率性休眠不灭；测量高通pwm，发现正常的时候pwm的管脚LCM_BL_PWM为低电平，失败...]]></description><category></category></item><item><title><![CDATA[Positioning Protocol for Next-Gen Cell Phones]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/79851257</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/79851257</guid><author>pangsurong</author><pubDate>Sun, 08 Apr 2018 14:17:05 +0800</pubDate><description><![CDATA[http://gpsworld.com/wirelessexpert-advice-positioning-protocol-next-gen-cell-phones-11125/by Lauri Wirola, Nokia Services LocationAs cell phones move into the next generation called Long-Term Evolutio...]]></description><category></category></item><item><title><![CDATA[TCP 的那些事儿（下）]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/78854845</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/78854845</guid><author>pangsurong</author><pubDate>Wed, 20 Dec 2017 16:39:43 +0800</pubDate><description><![CDATA[原文地址：
https://kb.cnblogs.com/page/209101/



这篇文章是下篇，所以如果你对TCP不熟悉的话，还请你先看看上篇《TCP的那些事儿（上）》 上篇中，我们介绍了TCP的协议头、状态机、数据重传中的东西。但是TCP要解决一个很大的事，那就是要在一个网络根据不同的情况来动态调整自己的发包的速度，小则让自己的连接更稳定，大则让整个网络更稳定。在你阅读下篇之]]></description><category></category></item><item><title><![CDATA[QCOM GPS Modem侧定位信息上报流程]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/78854705</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/78854705</guid><author>pangsurong</author><pubDate>Wed, 20 Dec 2017 16:30:14 +0800</pubDate><description><![CDATA[GPS Modem侧定位信息上报流程]]></description><category></category></item><item><title><![CDATA[QCOM FFBM 模式启动流程梳理]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/78247899</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/78247899</guid><author>pangsurong</author><pubDate>Mon, 16 Oct 2017 11:26:49 +0800</pubDate><description><![CDATA[名词解释
  FFBM: Fast Factory Boot Mode 
  提供了一种Linux系统最小UI交互界面的设计参考方式
Kernel FFBM 启动流程图Kernel FFBM 启动步骤解析
boot mode参数解析
  通过process_kernel_cmdline，解析”/proc/cmdline”,  如果有”androidboot.” 关键字，则设置ro.bootmode根]]></description><category></category></item><item><title><![CDATA[TCP 的那些事儿（上）]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/77836741</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/77836741</guid><author>pangsurong</author><pubDate>Mon, 04 Sep 2017 13:58:22 +0800</pubDate><description><![CDATA[原文网址：http://kb.cnblogs.com/page/209100/

TCP是一个巨复杂的协议，因为他要解决很多问题，而这些问题又带出了很多子问题和阴暗面。所以学习TCP本身是个比较痛苦的过程，但对于学习的过程却能让人有很多收获。关于TCP这个协议的细节，我还是推荐你去看W.Richard Stevens的《TCP/IP
 详解 卷1：协议》（当然，你也可以去读一下RFC793以]]></description><category></category></item><item><title><![CDATA[qcom 平台 Kernel Panic log 的保存]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/76994034</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/76994034</guid><author>pangsurong</author><pubDate>Wed, 09 Aug 2017 15:13:17 +0800</pubDate><description><![CDATA[qcom, kernel, panic]]></description><category></category></item><item><title><![CDATA[OpenGrok windows 安装及多项目索引]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/75220599</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/75220599</guid><author>pangsurong</author><pubDate>Mon, 17 Jul 2017 10:56:13 +0800</pubDate><description><![CDATA[转载：http://blog.youkuaiyun.com/finewind/article/details/47362525软件安装
安装JDK
  下载 
  http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html 
  目前最新的windows 32位版本： jdk-8u131-windows-]]></description><category></category></item><item><title><![CDATA[Qualcomm ramparse usage]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/75073054</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/75073054</guid><author>pangsurong</author><pubDate>Thu, 13 Jul 2017 16:07:42 +0800</pubDate><description><![CDATA[windows Qualcomm ramparse 使用说明准备工作
ramparse tool 下载 
 https://source.codeaurora.org/quic/la/platform/vendor/qcom-opensource/tools
lauterbach simulator 下载及安装 
 http://www.lauterbach.com/frames.html?prol]]></description><category></category></item><item><title><![CDATA[qcom android GPS 启动流程]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/73912714</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/73912714</guid><author>pangsurong</author><pubDate>Thu, 29 Jun 2017 15:29:46 +0800</pubDate><description><![CDATA[1    LocationManagerService启动及初始化过程(1) 在SystemServer.java的startOtherServices中添加LocationManagerService的代码如下：try {
    location = new LocationManagerService(context);
    ServiceManager.addService(Contex]]></description><category></category></item><item><title><![CDATA[iw 连接open AP失败的问题分析]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/73558374</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/73558374</guid><author>pangsurong</author><pubDate>Thu, 22 Jun 2017 09:31:47 +0800</pubDate><description><![CDATA[iw 连接open AP失败的问题分析iw 连接open AP 问题
  adb shell iw dev wlan0 connect -w “ssid” “frequece” “bssid” 
  返回结果： 
  wlan0 (phy #0): failed to connect to “ssid” status: 1: Unspecified failure
iw connect 连接流程
首]]></description><category></category></item><item><title><![CDATA[qualcomm bluetooth enable flow]]></title><link>https://blog.youkuaiyun.com/pangsurong/article/details/71171129</link><guid>https://blog.youkuaiyun.com/pangsurong/article/details/71171129</guid><author>pangsurong</author><pubDate>Thu, 04 May 2017 15:33:02 +0800</pubDate><description><![CDATA[主要介绍一下从bluetooth service 到 bluetooth stack 到 hci layer 到 vendor层 bluetooth enable 的程序流程，有不对之处，敬请指正。]]></description><category></category></item></channel></rss>