bus alsa

I2C (Inter integrated circuit, internal integrated circuit) bus is a very inexpensive and efficient network for interconnecting peripherals in small, embedded systems. The I2C bus is sometimes called IIC, which has a history of more than more than 20 years. The I2C interface and the SPI interface work the same, but the two methods are different. 　　 The I2C bus us

Forward the blog about I2C by Mr. Netease DP, which is easy to find during learning.Recently, it was found that the primary device reset may cause an I2C deadlock when accessing the I2C device. The result is high in the SCL and low in the SDA. After that, it is found that the I2C bus is pulled from the device. After the power is down from the device, SDA becomes high and becomes available after power-on The message is normal. After that, SDA will au

limitations when accessing data over an Intranet or Internet. You are also responsible for implementing data synchronization between front-end and back-end systems, handling distributed change tracking, and dealing with problems that occur when used in an occasionally connected environment. The smart client applications discussed in this article can be built using Windows presentation Foundation (WPF) or Silverlight. Because Silverlight has a subset of the WPF features, the techniques and meth

; ...... Pd.num_cs = Num_cs; PD.SRC_CLK_NR = SRC_CLK_NR; Pd.cfg_gpio = (cfg_gpio)? Cfg_gpio:s3c64xx_spi0_cfg_gpio; ...... S3c_set_platdata (PD, sizeof (PD), s3c64xx_device_spi0); The above function is to specify the GPIO configuration that the controller uses, the number of slices of pins and the clock configuration. This information is used in the subsequent controller driver. registering the platform_driver of the SPI Controller In the previous section, we registered the SPI

Give the car to the users of the software to detailed analysis to share the query bus tutorial. Tutorial Sharing: 1, first open the car to the app, positioning your current city; 2, in the Home page, click on the Search bar, you can search the bus lines, stations, locations to conduct real-time inquiries. Well, the above information is small make up for the car to the users of

GStreamer bus system is mainly used to provide users with internal elements event information. Using the GStreamer bus system, just call Gst_bus_add_watch and register a callback. The problem, however, is when the interface is invoked, and the thread used to handle the bus event. The callback is implemented internally with the glib source mechanism, and the sourc

Need to rent a house in a new place or buy a house, an important consideration is whether the traffic is convenient, I rent the house when I would like to know from the bus station around me, can not transfer to where, I had this demand after the Internet search, and did not find similar features, and the trouble is, Baidu map the most basic API also does not show the interface of multiple lines at the same time, so only with the help of Baidu map ove

1) Overview Bus is a simple system that uses its own threading mechanism to distribute messages from a pipe thread to an application. The advantage of the bus is that when GStreamer is used, the application does not require thread recognition, even if GStreamer has been loaded with multiple threads. Each pipeline contains a bus by default, so the application does

1. Introduction D-bus is an advanced interprocess communication mechanism, which is provided by the Freedesktop.org project and is issued using the GPL license. The main purpose of D-bus is to provide communication to the process in the Linux desktop environment while delivering the Linux desktop environment and Linux kernel events as messages to the process. The main probability of D-

Duanxx STM32 learning: stm32 bus AMBA, AHB, APB A few days ago I looked at the main peripherals and circuit design of STM32. Today I began to look at the program design of STM32. Here I am using the STM32 library V3.5, so I am too lazy to see what registers The first problem encountered was the internal bus ahb and APB of STM32. Here I checked some information and recorded it.AMBAAMBA (Advanced Microprocess

BackgroundBased on the design of the bus, the design idea of the internal hardware of the computer (transmitting data via the bus) is borrowed. In distributed systems, there is a need for mutual communication and remote invocation between different subsystems, the direct way is "point-to-point" communication mode, but this will expose some obvious problems: the system tightly coupled , configuration and ref

Manager's bus theorySource: students major professional site Author: studa Public Bus is a transportation tool for the most people in a big city. Because of its universality, buses are mainly practical and cheap, and people love and hate them. Many bus-related metaphors and theories have been circulated among the people. Some of them are very interesting and some

Since the use of computers and networks, it has greatly changed our world. So far, the intelligent brain of chips and hardware devices has been applied and developed in more and more fields. As for protocol, there are also many changes. Next we will introduce the I2C bus protocol for audio and video devices. I2C bus Definition The I2C (Inter-Integrated Circuit) bus