首页 > 代码库 > Android 4.4 Kitkat 使能 USB adb 功能
Android 4.4 Kitkat 使能 USB adb 功能
背景
在 Linux-3.8 以后,Android 的内核分支,便去掉了 f_adb,改使用 USB function FS,在用户空间实现 USB adb 功能。这篇文章依据原作者的 Google+ 文章,在 Atmel sama5 开发板上做了測试,将步骤记录例如以下,供须要使用的读者參考,你也能够查看作者原文:https://plus.google.com/111524780435806926688/posts/AaEccFjKNHE
在 Linux-3.10 上使能 USB ADB
编译内核时使能 USB FunctionFS
When building your kernel, make sure to configure in FunctionFS:
Device Drivers -> USB Support -> USB Gadget Support
-> USB Gadget Driver -> Function Filesystem
Device Drivers -> USB Support -> USB Gadget Support
-> USB Gadget Driver -> Function Filesystem
设置正确的 USB vendor ID 和 Product ID
这个设置能够放在 bootcmd 或者载入内核模块的时候通过參数传递:
Modify your boot parameters to set the vendor and product ids so adb on your host recognizes the device.
g_ffs.idVendor=0x18d1 g_ffs.idProduct=0x4e26
g_ffs.idVendor=0x18d1 g_ffs.idProduct=0x4e26
Alternatively this can also be done if you built the gadget driver as a module at load time:
insmod g_ffs.ko idVendor=0x18d1 idProduct=0x4e26
启动 Android 并挂载 functionFS, 使能 USB adb
Now here I‘m assuming you‘ve got a serial port working. Boot your target device with your new kernel (and insmod the g_ffs driver if necessary), and setup the functionfs directory:
# mkdir /dev/usb-ffs # mkdir /dev/usb-ffs/adb # mount -o uid=2000,gid=2000 -t functionfs adb /dev/usb-ffs/adb
重新启动 adbd 守护进程
If everything is working, you can kill adbd and when it restarts it should find the functionfs mount and make use of it.
Hooray there‘s your shell!
# ps adbd # kill <pid for adbd>
然后进入 cmd 或者 Linux Host 就能够成功连接 usb adb 获得 Android shell 了
On your host system, connect to the target using the adb program:$ ./adb shell root@android:/#
Hooray there‘s your shell!
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。