UART, I2C, SPI are the most commonly used serial communication protocols. Today, I will share some insights into the underlying communication protocols. (Source: 8号线攻城狮)
How to Understand Clock Phase (CPHA) and Clock Polarity (CPOL) in SPI Programming? I2C Operation Notes – Taking AT24C04 as an Example Still Don’t Understand Serial Communication? This Article Will Help You Understand
1. UART: The Art of Asynchronous Communication As Qiu Qianzhang from “The Legend of the Condor Heroes” said, UART is like my lightness kung fu, gliding over the water. If you want to cross the river (communicate), you need to set up markers in advance, and your steps should be fixed according to the distance … Read more
In the previous article on dynamic library encapsulation examples, a CH347 high-speed USB to UART, SPI, I2C, JTAG bridging module was used, which is now open source 👉 GitHub Repository[1]. Introduction CH347 USB High Speed Bridge is a debugging tool designed based on the CH347[2] chip, supporting high-speed USB, allowing USB to UART, USB to … Read more
Click the card above to follow for more information 1. Why Do We Prefer Serial Communication? When working on microcontroller products, the most commonly used method is serial communication. For any microcontroller peripherals, those with serial port functionality are prioritized, such as Bluetooth modules, WIFI modules, 4G modules, electric meters, and displays. Why do we … Read more
1PC Software 2.2.4 Update 1. Offline Programming Function Upgrade— Added GD32C10x Series— Added Juchuang HT502x— Added Infineon TLE987x Series— Added NXP S32K1xx Series— Added APM32E103 Series— Added GD32F427RE Series— Fixed PY32F002 Flash Capacity— Fixed New唐 M480 Series, Option Word Read Protection Bug.— Fixed STM32H723 Series Flash Capacity— Fixed PUYA Serial Flash P25Qxxx Series Unlock Command— … Read more
Today, let’s talk about the topic of microcontroller communication protocols. When microcontrollers interact with peripherals, there needs to be a common language, right? That’s what communication protocols are for! We will focus on three common protocols: UART, SPI, and I2C, and see how they allow devices to communicate with each other. UART: The Simplest Serial … Read more
SPI is very common in embedded systems, whether in system processors on chips (such as ARM, MIC, or high-end 32-bit processors like Power PC), or in microcontrollers (such as AVR, PIC, etc.), which typically include SPI controllers capable of operating in master-slave mode. Programmable AVR controllers in the system can be programmed using the SPI … Read more
Many students learning embedded systems often feel confused by various protocols and can’t distinguish their functions. Today, I will clarify the five commonly used protocols in embedded systems, packed with useful information. Without further ado, let’s get started! 01 UART Communication Protocol 1. Principle The data packet in serial communication is transmitted from the sending … Read more
These animated diagrams of signal waveforms in electronic systems help us understand the mechanics of transmission. 1 SPI Transmission ▲ Figure 1 SPI Data Transmission ▲ Figure 1.2 SPI Data Transmission (2) ▲ Figure 1.3 SPI Timing Signal 2 I²C Transmission ▲ Figure 1.2.1 I2C Bus and Addressing Method 3 UART Transmission ▲ Figure 1.3.1 … Read more