i2c devices

In the previous article, we have explained the basic concepts and related principles of the I2C bus protocol. I don't know if you have any knowledge. Now we will introduce this application. First, let's see which devices have the I2C bus protocol. I2C bus application At present, many semiconductor integrated circuits h

Linux I2C driver architecture1. Linux I2C driver architecture in Linux, I2C BUS drivers are divided into two parts: BUS and DEVICE drivers ). The role of the bus driver is to add corresponding read/write methods for each I2C bus in the system. However, the bus driver does not communicate with each other. It only exists

============================================Author: yuanluluHttp://blog.csdn.net/yuanluluCopyright No, but reprint please retain this paragraph statement============================================ According to their own understanding, the http://lxr.linux.no/linux+v2.6.34/Documentation/i2c/instantiating-devices is translated into the document about enumerating and establishing i2c_client. Have objections

the termination of a data transmission. The stop signal is also a time series of Level Jump, rather than a level signal. The stop signal is also established by the master controller. After the signal is established, the I2C bus returns idle status. It is not specified in the Data Validity that SDA can only change at the low level of the SCL. Why is the difference between star and stop? First, star and stop are not data, so they do not comply with the

Principles, differences and Applications of SPI, I2C, and UART Serial Bus 1. UART is a two-line interface. One transmission and one receiving interface can communicate with each other in full duplex mode, and the number of lines is relatively small. Data is transmitted asynchronously, with strict timing requirements on both parties, and the communication speed is not fast. It is used most frequently for multi-host communication.2. Compared

Differences: SPI: high-speed synchronous serial port. 3 ~ 4-line interface, independent and synchronous sending and receiving UART: Universal asynchronous serial port. Bidirectional communication based on the standard baud rate is slow I2C: A three-line serial transmission mode. The communication protocol and usage can be found on the Internet. Bidirectional data transmission with three linesSerial peripheral interfaceUART: Universal asynchronous tra

The I2C architecture consists of three components: (1) I2C Core (2) I2C bus driver (3) I2C Device Driver I2C core: Provides the registration and cancellation methods for I2C bus drivers and device drivers, the upper layer of the

I2C bus principle and application example The I2C (Inter-Integrated Circuit) bus is a two-line serial bus developed by Philips to connect the microcontroller and its peripheral devices. The I2C bus was originally developed for audio and video devices in 1980

After discussing the initialization and deletion of drivers for I2C devices and I2C adapters, we will focus on several function operations in file_operations, paste the file_operations struct code first. Let's see which functions are included. Static const struct file_operations i2cdev_fops ={ The structure must be quite clear. Therefore, the

I'm confused about the I2C bus protocol? I was not quite clear when I first saw it. Let's take a look at the role of the I2C bus. Maybe this will give you a little bit of understanding. I2C bus application At present, many semiconductor integrated circuits have integrated I2C interfaces. Single-Chip Microcomputer with