So far, protocols like I2C, SPI, and UART remain the most commonly used communication protocols in electronic embedded devices. This article will dissect these three protocols, providing a clear and intuitive understanding of their functions, advantages, and limitations, accompanied by GIF animations. 1. I2C Protocol I2C is a serial communication protocol commonly used to connect … Read more
Follow “Chipown Microelectronics” ↑ Only Original Technical Content Currently, the application of stepper motors in home appliances and smart devices requires achieving more flexible motor control, safer motor protection, and advanced diagnostic functions at a lower system cost. As the number of end products using stepper motors increases, additional peripheral IO expansion is needed, leading … Read more
Bus applications are very widespread in the field of computers. (1) The method of transmitting information via the system bus can be divided into the following three types: 1. Data Bus 2. Address Bus 3. Control Bus (2) According to the usage range of the bus, it can be further divided into many types: such … Read more
So far, I2C, SPI, and UART are still the most commonly used communication protocols in electronic embedded devices. In this article, we will analyze these three protocols to help everyone clearly and intuitively understand their functions, advantages, and limitations, supplemented with GIF animations. I2C Protocol I2C is a serial communication protocol commonly used to connect … Read more
There has been a rumor circulating that the STM32 hardware I2C design has bugs, and it is better not to use it, as software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have never used hardware I2C, mainly because software I2C is also quite convenient and can be used on … Read more
Click the above “Public Account” to subscribe! The development of computer technology is extremely rapid. Thirty years ago, a small machine the size of a room had computing power that is still inferior to the CPU in today’s smartphones. Surprisingly, there is a technology from 38 years ago that is still widely used in computers … Read more
Bus Buses are everywhere. Signals in this world are the same, but there are thousands of buses, which can be quite confusing. In general, there are three types of buses: internal buses, system buses, and external buses. Internal buses connect various peripheral chips with the processor within a microcomputer; system buses connect plug-in boards with … Read more
Recently, there have been discussions in the WeChat group about I2C. Since we are talking about I2C, it’s necessary to mention SPI as well, so let’s discuss both. If anyone has better insights, please leave a comment to let more people know your views. 整理与网络，侵删 Should I2C and SPI Compete? Nowadays, in the field of … Read more
Basic Theoretical Knowledge i. Parallel Communication/Serial Communication ii. Asynchronous Communication/Synchronous Communication iii. Half-Duplex Communication/Full-Duplex Communication i. Parallel Communication/Serial Communication Parallel communication: Fast transmission speed, transmitting 8 bits at once, but high communication costs, requiring 8 independent channels. It does not support long-distance transmission. Used in devices such as printers and scanners, for example, the DB-25 … Read more
The author has summarized the I2C specifications into one article, with the following table of contents: I2C Introduction I2C Architecture I2C Transfer I2C Synchronization And Arbitration I2C Hs-mode 1. I2C Introduction 1.1 I2C History I2C: Inter-Integrated Circuit, an integrated circuit bus. I2C is a simple, bidirectional two-wire synchronous serial bus designed by Philips in 1982 … Read more