bus alsa

Common faults and solutions for computer bus interface once had such a statistical report: computer failure in 40% from the computer's bus interface! Since the computer is plugged together by a variety of accessories, it is difficult to ensure that each slot can work stably, such as this or that problem, although the search is cumbersome, but not surprising. Therefore, when you understand the impact of th

1-Wire Bus Technology and Its Application Abstract: This paper introduces the principle and signal transmission mode of the single bus technology introduced by Dallas, and describes the single bus communication protocol, finally, the single-bus data transmission method is presented based on the application of the si

Some time ago to implement a RABBITMQ message bus, the implementation of the process itself is also constantly have to think, summarize and revise. You need to consider the various dimensions: efficiency, performance, network, throughput, and even the ability to envision the possible use of the API scenarios, patterns. But can have one thing, oneself willing to do, walk, eat, take a bus when all thinking ho

Four drive units: the D-bus bus and S-bus bus for the CONTEXT-M3 core, the Universal DMA1, and the general purpose DMA2. Four driven units: internal Flash (internal Mountain village memory), internal SRAM, FSMC, AHB to APB Bridge Ahp2apbx. The Icode bus is the

Forwarded from: http://blog.sina.com.cn/s/blog_4af327e10101irie.htmladvantages and disadvantages of D-busLinux does not have a good IPC mechanism. Windows, Mac OS, Android also has "binder" subsystem. Linux has sockets, FIFO, shared memory and other mechanisms, which are not very good for the application layer. Kdbus attempts to create a mechanism that is similar to other systems for Linux.D-bus is the closest approach to this standard on Linux. Pros:

Time: 2016-12-12 huaqing Vision1. PrefaceThe CAN (Controller area Network) bus, which is a control LAN bus, is an effective serial communication network that supports distributed control or real-time control. It is widely used in industrial field control, intelligent buildings, medical devices, transportation and sensors due to its high performance, high reliability, unique design and suitable price, and ha

I²C transmits data between devices connected to the bus using only two lines (SDA and SCL). Each device is identified by a unique address (whether it is a microprocessor, LCD driver, memory, or keyboard interface) and can be used as a transmitter or receiver depending on the function of the device. The LCD driver may be just a receiver, and the memory can send and receive data. In addition to transmitters and receivers, the device can be used as a hos

1. the generation and development of CAN Bus Controller Local Network (CAN-Controller Area Network) is a multi-host Local Network launched by Bosch for modern automobile applications, its outstanding performance has been widely used in industrial automation, a variety of control equipment, transportation tools, medical instruments, construction, environmental control and many other departments. The local network of controllers will be popularized in C

D-bus three-tier architecture D-bus is a message bus system for communication between applications for communication between processes. It is a 3-tier architecture of the IPC system, including: 1, function library Libdbus, for two applications to contact and interactive messages. 2. A message bus daemon based on Libdbu

Loaded from http://blog.csdn.net/sjwangjinbao/article/details/6077225When writing a bus device driver, it was found that the struct device in the 2.6.33.2 kernel had no members of BUS_ID, and the const char *init_name member was found. However, this member cannot be used directly to set and read the device name.The method for kernel operation is dev_name and Dev_set_name. The definition in the kernel is:1) dev_nameStatic inline const char *dev_name (c

The last 2 weeks have been debugging IIC and SPI bus equipment, here record 2 kinds of bus, in case of forgetting. One IIC Bus The abbreviation of I2c--inter-ic serial Bus is the serial transmission bus between chips introduced by Philips company. It implements duplex synchr

transmitted from inside the computer to the output serial data stream. A serial that is external to the computerThe data is converted to bytes for use by devices inside the computer that use parallel data. In the output serial data stream, add theParity bit and parity with the data stream received from the outside. Add a start-stop flag to the output data stream,And remove the start-stop flag from the receiving data stream. Handles interrupt signals issued by the keyboard or mouse (keyboard and

;) V const V0, 0x7f030024 invoke-virtual {p0, v0} , Lcom/baidu/bus/activity/offlinedatamanageactivity;->setcontentview (I) V4. From 1, only one expandablelistview,id in this layout is expandlistview_all_cities, the corresponding value is 0x7f06009f, Find the place to use this value in Offlinedatamanageactivity:Const V0, 0x7f06009finvoke-virtual {p0, v0}, Lcom/baidu/bus/activity/offlinedatamanageactivi

1 basic In the device driver often see and platform related fields, distributed in many corners of the driver, this is also the 2.6 kernel of a more important mechanism, the principle of its understanding, for later analysis of the driver is very helpful, the following brief introduction: In the linux2.6 device model, care about the bus, the device, drive the three entities, the bus will be device and drive

frequency of the CPU to a multiple of the external frequency, so as to increase the frequency by increasing the frequency. Therefore, after 486We are exposed to two new concepts: External frequency and frequency doubling. The relationship between them and the clock speed is the external frequency X multiplier = the clock speed. The external frequency of a CPU and today'sDay we often say that the FSB (front side bus, Front End

Computer composition principle-system bus and computer composition principle1. Basic concepts of Bus 1. Why should I use a bus? Von noriman divides computers into five parts: memory, memory, controller, input device, and output device. Many channels are required to connect these devices.2. Bus

FSB--front Side Bus (FSB) is the bus that connects the CPU to the North Bridge chip. Choose the motherboard and CPU, pay attention to the two collocation problem, in general, the front-end bus is determined by the CPU, if the motherboard does not support the CPU required front-end bus, the system can not work. That is,

Detailed history of system bus, including early PC bus and ISA bus, PCI/AGP bus, PCI-X bus and mainstream pciexpress, hypertransport High Speed Serial Bus. From the PC bus to the ISA an

I2C bus signal timing Summary Idle bus statusThe SDA and SCL signal lines of the I2C bus are in the idle state at the same time.At this time, the output-level FET of each device is in the cutoff state, that is, the bus is released.By the two signal lines of the respective pull-up resistance to raise the level. Start

A digital computer room consists of several system components which work together to form a complete computer system. Bus: a public channel for data transmission between multiple functional components of a computer system. With the help of bus connection, the computer implements address, data, and control information exchange between functional components of each system, and works on the basis of compet