usb to usb otg

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

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

In 1991, one introduced the concept of pipelines in Linux and used pipelines in many places, such as file systems and device drivers. So we can see that there are various pipelines in Linux. But the same thing is that all pipelines are used to transmit things, but some pipelines transmit real material while some pipelines transmit data. The pipe we see in the USB code is used for data transmission and communication. Communication is from both parties,

This article was reproduced from: http://blog.csdn.net/u013686019/article/details/50165059[HTML]View PlainCopy android:4.4.4 First, the problem analysisWhen the USB printer is plugged into an Android device, there is no printer node (/DEV/USB/LP0) generated in the System/dev directory.The first reaction is to check the printer device and access the Ubuntu-equipped PC, normal: /dev/

USB device is a collection of ports, interfaces, configurations, USB protocol is a variety of USB descriptors to characterize the function of USB devices. The computer uses these descriptors to obtain the functionality of the USB device.USB descriptors include:

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