usb bidirectional

front node, and the right pointer field is used to point to the next node. A two-way cyclic linked list has the following features: p-> llink-> rlink = p-> rlink-> llink = p. The code used to represent two-way linked list nodes is as follows: Public class Node {private Object data; private Node lLink, rLink; // constructor public Node () {this. data = null; this. lLink = null; this. rLink = null;} // The constructor loads public Node (Object data) {this. data = data; this. lLink = null; this.

Before the interview time technology very natural to ask you know Vue have any characteristics, at that time did not understand Vue, Just to vue1.0 some knowledge to learn a little, and then casually said Vue can two-way binding data, now think really embarrassed Ah, vue2.0 has removed two-way binding, need to do it yourself to achieve. The following text:Vue 2.x compared to Vue 1.x, there is a relatively large change is the removal of the components of the props two-way binding function.The pro

; this.edition+=newvalue-2004 }} ); book.year=2005; alert (book.edition);//2 Console.log (book.year);//2005 That is, when executing the book.year=2005, it actually executes the set method in year, and executes the year's Get method when executing the book.year; var book={ _year:2004, edition:1 }; Object.defineproperty (book, ' Year ', { get:function () { Console.log ("year get ') return this._year }, set:function (newvalue) { Console.log ("year set") if (newvalue>2004) { this._year=

Some friends asked why the optical drive will be stuck on the disc. In fact, it is not due to the poor quality of the disc or the aging of the optical drive laser head. When the optical drive is reading some unclear areas of the optical drive, you need to repeat it to adjust the position and power of the optical drive to read data. At this time, the optical drive consumes a lot of CPU, this often causes false crashes. At this time, you just need to take out the CD in the optical drive and th

How to disable USB flash drives on the company's computer, prohibit USB flash drives from copying computer files on the company's computer, and prohibit USB flash drives on the computerAt present, USB flash drives are frequently used, and the read/write speed and storage space are getting bigger and bigger. Although it

How to disable USB flash drives, disable USB storage devices, and prohibit USB flash drives from copying computer filesUSB flash drives and mobile hard disks are currently widely used USB storage tools, which greatly facilitates work. But at the same time, employees can easily copy computer files through

One-click USB flash drive _ How to use a USB flash drive to install the system-Windows XP system and Windows 7 system tutorial-one-click USB flash drive boot disk creation tool tutorialStep 1: preparations and precautions before preparation 1. Download the one-click USB flash drive system software (Note: The computer m

USB-HDD, USB-ZIP, USB-FDD boot HDD, short for harddiskdrive, is the English name of the hard drive. The most basic computer memory, we often say that disk C, disk D and other disks are hard drive, but we generally referred to as hard drive. Modern hard disk capacity is generally 40g, 80g, 120g, 160g and so on, currently the highest desktop level hard di

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

in the pipeline. One pipeline can only be input or output, and the fish and the bear's paw cannot have both, we have already introduced this macro. In the pipeline, 7th bits (bit 7) indicate the direction. So here 0x80 means that bit 7 is set to 1, which indicates that the transmission direction is from the device to the host, that is, in; and if this bit is 0, it indicates that the transmission direction is from the host to the device, that is, out. Because usb_dir_out is 0 and usb_dir_in is 1

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/

_____________________________________ In-depth CommunicationQqGROUP: A: 204255896(1000Super group, can join) B: 165201798(500Super people, full staff) C: 215053598(200High personnel group, full personnel)D: 215054675(200High personnel group, full personnel) E: 215055211(200High personnel group, full personnel)F: 78538605(500High personnel group, full personnel) G: 158560047(500Personnel high-level group, full member) h: 103661446 (can join ...) YYGroup:7182393 YYChannels:80518139(Ir

Step 1: view the USB flash disk Information First, run the sudo fdisk-l command to check where the USB flash disk is located, that is, where the USB disk is mounted. (If the fdisk-l command is used directly without any results, you must add sudo to run it as an administrator) After viewing this information, you may see the following information: Disk/dev/SDA: 25

Because the USB driver in Linux is already very complete,You only need to follow the following configuration. After the configuration, recompile the kernel and install it on the Development Board. 1. Modify make menuconfig System type --> Input core support --> SCSI device support ---> [*] Legacy/proc/SCSI/support * ** SCSI support type (disk, tape, CD-ROM )*** [*] Hid devices ---> --- Hid Dev