Some basic concepts of USB
1. pipe is a data transmission model between the host and the device endpoint. There are two types of pipelines: unformattedStream pipe and message pipe ). Any USB device exists once powered onAn information pipe, that is, the default control pipe. The USB Host obtains the description, configuration, and status of the device through t
After reading get_transport (), continue to read the get_protocol () and get_pipes () functions. Still from drivers/usb/storage/usb. c: 672staticintget_protocol (structus_data * us) 673 {674 switch (us- gt; subclass) {675
After reading get_transport (), continue to read the get_protocol () and get_pipes () functions. Still from drivers/usb/storage/
Technorati label: Boot Disk
How to Create a USB flash drive and install the system with a USB flash drive (reprinted)
Many of my friends are using laptops without optical drives, but the problem also arises. When we need to reinstall the system, there is no optical drive. What should we do? Maybe you can say that the hard disk can be installed under DOS, but how many people will use dos?
In fact, not only d
This story uses kernel code 2.6.22. In the Linux kernel code directory, all the code related to the device driver is under the drivers/Directory. Using the ls command in this directory, you can see many subdirectories: lfg1: /usr/src/linux-2.6.22/drivers # lsKconfi...
This story uses kernel code 2.6.22. In the Linux kernel code directory, all the code related to the device driver is under the drivers/Directory. Using the ls command in this directory, you can see many subdirectories:
Lfg1:/usr/
recently, I have to deal with Linux deployment. Generally, I need to test it on my own machine before deploying the production environment. For example, you can use a USB flash drive to install the operating system. VMware workstation9.0 is installed on the machine to run multiple test VMS. The reason is of course to use this to deploy some operating systems, especially USB flash drives (you can also use
1. Experimental environmentubuntu14.042. Start Usb-creator2.1 Click the search icon in the upper-left corner of the desktop, enter Usb-creator, and select "Startup Disk Creator" in "Application"2.2 Input in Terminal:Usb-creator-gtkYou can open the Startup disk creator directly3. Instructions for use3.1 Select mirror3.2 Select USB flash drive and format3.3 Set add
How does a USB Host identify a USB device?
WhenUSB deviceWhen you plug in the host, the host performs a series of actions to enumerate the device configuration (the configuration is an enumeration state, which indicates the temporary State). These statuses are as follows:
1. Access state (attached): After a device is connected to a host, the host detects the access of the device by detecting the level c
From: http://www.weiphone.com/apple/tutorial/2012-08-14/Teach_you_how_to_make_ OS _X_Lion_start_U_disk_452965.shtml
Many people purchase the latest OS lion in the Apple App Store ). However, some problems are found after the upgrade, such as: the boot and shutdown speeds are obviously slow, and someProgramStop the response. Now, the Forum's fengyou mb702ll will introduce how to create and start a USB flash drive after purchasing OS X lion from the A
I've done this once before, but it's been a long time and forgotten.Today with ch340 in Linux debugging, with a previously written serial debugging program can not send data. Just remember window under the need to install the driver, the actual Linux also need to drive to normal use. The default Linux has this driver, but some old, not used.In today's commissioning process, first plug the ch340 one end into the computerInput command: lsmod | grep usbserialOutput: usbserial 53248 1 ch341Successfu
After writing can also be used as a U disk storage other data, not affected. The advantages of making a USB U disk are many, such as without CD and CD-ROM, you can install the system, and support all major system platforms such as Windowslinux. Easy to operate and easy to use.
Here's the platform I tested:xp/windows7/windows8/win2003/win2008Linux Ubuntu/linux CentOS
Operating EnvironmentWindows 7 + UltraISO + w7.iso (System mirroring) + 8GU disk
Pr
[OPPO Find7 How to turn on USB debugging? OPPO Find7 Open USB Debugging Method]
1 in our Oppo Find7 standby state Click "Settings" to enter and then find "normal" and then we find inside the "about mobile" to expand "more." (pictured below)
2) Then we click on the 4 times "version number" and then click on the "General" list, click "More" details as shown in the following figure.
3 Open "developer Op
Method One:
Click "Settings" on your phone to see that there is a "help setting"-"Developer Tools", and then directly find the USB debug mode on it, which is much simpler than the Android system, as shown in the following illustration.
Method Two:
Enter the phone interface directly input "*#* #6961 #*#", access to the USB interface, we click on to open.
Method Three:
Note and
Some time ago, after plugging and removing your USB flash drive on a TV, it was required to be formatted again. This may be because the unscrupulous program on the TV deleted the key configuration information of the USB flash drive. After formatting the USB flash drive, the USB flash drive is prompted to be write-prote
To do USB-related things in wince, we must first understand some concepts, which is very important.
(1) host and FunctionFirst, you must know that the USB is a master-slave structure. For PCs and mobile phones, the PC end is the master end, called the host, and the mobile phone is the slave end, usually called the client. However, this term has changed in wince. The master end is also called host, while the
If the virtual machine does not have a corresponding port to identify the dongle or USB device, then we will use a third-party device to realize the function of mapping the dongle in the virtual machine. So how do we choose a third-party device, today I give you all to say a device USB server hardware server have you ever heard of, USB server is dedicated to solv
Description1, Rl-usb plug-in the example of a U disk, recently too many netizens consulted, do not do an example is justified. This example is for this purpose.2, RTX and all of its middleware basic examples, this is the USB host function, this is a complement, all the basic functions have been done comprehensively.3, this example only supports the MDK4.74 version, because Rtx,rl-flashfs,rl-
Linux-USB Gadget
OverviewThe Linux-USB Gadget driver framework (hereinafter referred to as gadget) provides software functions for devices defined by the USB protocol.Compared with the Linux USB host driver, the gadget driver appears later than 2.4.23.The Gadget Framework proposes a set of standard APIs, which are driv
For the entire USB-storage module, the usb_stor_init () function is its start. However, for the USB flash drive, the function that actually drives the USB flash drive starts with the storage_probe () function.
As long as the two parallel lines overlap, it is doomed to start a lifetime of entanglement, no matter whether the middle is a short separation.
(1) ft232r: ftdi (www.ftdichip.com) recently released a USB Interface Conversion Chip to convert USB to serial UART interfaces, or to synchronize, asynchronous bit-bang interface mode. Ftbench is a real cross-platform solution. It has versions suitable for various operating systems. It is prepared for the Linux kernel and the source code is open. It is part of the Linux kernel. It is easier to design and us
Original article: http://www.gbunix.com/htmldata/2005_05/1/3/article_1193_1.html
Access Windows partition and USB interface mobile hard drive (USB flash drive) in rh9)To access windows partition and USB interface mobile hard drive (USB flash drive) in RedHat Linux 9, you must first mount the Windows partition and
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