I2C Communication Protocol Basics 3.1 Communication Overview I²C (Inter-Integrated Circuit) is a serial communication bus designed by Philips in the early 1980s. It facilitates communication between motherboards, embedded systems, or mobile phones and peripheral devices. Due to its simplicity, it is widely used for communication between microcontrollers and sensor arrays, displays, IoT devices, EEPROMs, etc. … Read more
UART, I2C, RS485… These communication protocols are commonly used, but their explanations can be ambiguous. I feel it’s necessary to organize them to consolidate and differentiate. The article is a bit long, so I suggest saving it for later reference. UART stands for Universal Asynchronous Receiver-Transmitter. The UART port refers to a type of physical … Read more
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
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
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
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
In embedded development, interfaces such as UART, I2C, and RS485 are commonly used. Understanding them may be ambiguous, so this article organizes them. The article is lengthy, with an estimated reading time of about 10 minutes. UART (Universal Asynchronous Receiver-Transmitter) The UART port refers to a type of physical interface (hardware). UART is an asynchronous, … Read more
Why Is Outputting Debug Information Important in Embedded Development? Outputting debug information is a crucial practice in embedded development; it helps ensure software reliability, stability, and performance, and is one of the key tools for troubleshooting. The Main Functions of Outputting Debug Information in Embedded Development Are as Follows: 1. Error Troubleshooting and Problem Localization … Read more
Welcome FPGA engineers to join the official WeChat technical group. Clickthe blue textto follow us at FPGA Home – the largest pure FPGA engineer community in China For FPGA debugging, we mainly take Intel FPGA as an example, simulating and debugging in the Win10 Quartus II 17.0 environment, using the development board type EP4CE15F17. This … Read more
During a business trip to a new energy factory, I was tasked with upgrading the firmware to resolve a bug. The microcontroller needed to have a .hex file reprogrammed, but the product was already sealed, making it impossible to open. Therefore, I had to use the CAN bus to update the firmware via a Bootloader. … Read more