Android system porting and Driver development overview

<span id="Label3"></p><p>Andoroid current market share development quickly depends on the Android source code open source, completely belongs to their own embedded system, do not need to pay google. Android4-tier system Architecture Linux kernel, C + + code base, Android SDK API, Application. Application porting is a specific hardware platform for application porting, and system porting allows the Android operating system to run on a particular hardware platform. The Linux kernel version used by the device in the Android system for a view of the PHONE. Linux<span style="font-family: 宋体;"><span style="font-family: 宋体;">kernel version update fast, every time the changes in the kernel will have a driving change, on the</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">the programmer that drives development has a big impact. Learning</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Drive development requires a real operating system to build</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Drive the development environment and test it under</span> the</span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Drive. </span></span><span style="font-family: verdana;"><span style="font-family: verdana;">GUN C</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">is to learn</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">a technology that drives must be mastered is the standard</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">C</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">expansion, but also</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;">the <span style="font-family: 宋体;">most commonly used</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">C</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Language Compilation Environment. The Development Board can be used to test</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Drive in</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Android</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">effect in the Operation. On the Development Board</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">led</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">the Light is</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">the specific performance of the drive,</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">led</span></span><span style="font-family: 宋体;">the <span style="font-family: 宋体;">driver code involves many of the System's functions and structures, such as</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Readl</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">,</span></span>writerl, printk,<span style="font-family: verdana;"><span style="font-family: verdana;">Mizcdevice</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">,</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Module_exit</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">,</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">file_operations</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">,</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Mizcdevice</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">and so On. Any of</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">The driver has a load function and an unload Function. </span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;">the <span style="font-family: 宋体;">driver is only related to the kernel, and</span> the</span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">system-independent, Learning</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Android</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">driving development means learning</span></span><span style="font-family: verdana;"><span style="font-family: verdana;">Linux</span></span><span style="font-family: 宋体;"><span style="font-family: 宋体;">Drive Development. </span></span></p><p><p>6</p></p><p><p>Android system porting and Driver development overview</p></p></span>