Follow the blue text and reply “entry materials” to get a comprehensive tutorial from beginner to advanced on microcontrollers The development board will guide you, we will help you fly Written by | Wuji (WeChat: 2777492857) The full text is about1507 words, reading will take about 5 minutes I have been doing microcontroller development, but … Read more
Introduction SPI (Serial Peripheral Interface), UART (Universal Asynchronous Receiver/Transmitter), and I2C (Inter-Integrated Circuit) are common serial communication protocols, each with unique characteristics in hardware interfaces and communication methods, suitable for different application scenarios. You can get a general understanding of these three communication protocols from the following diagrams: Next, we will introduce these three communication … Read more
Greetings, hero! Welcome to the FPGA technology world. The world is vast, and meeting you is fate. You can follow the FPGA technology community to get other interesting resources in the “Adventuring” and “Heroic Deeds” sections, or just chat over drinks. This series will bring systematic learning of FPGA, starting from the most basic digital … Read more
This is a multi-functional online writer board that integrates EMMC flying wire, UART serial port, and JTAG functionality for variable frequency air conditioners, compatible with the RT809H programmer. EMMC Flying Wire Interface: It can directly provide the required 3.3V and 1.8V voltage to the motherboard, making it convenient to power the EMMC during board repairs, … Read more
Click on the above blue text to follow us Serial communication is the most basic communication method faced by electrical engineers, and RS-232 is the simplest among them. Many beginners often struggle to understand the relationship and differences between UART, RS-232, RS-422, and RS-485. This article will discuss these concepts to help clarify their relationships. … Read more
Have engineers encountered situations where testing a single RS-485 device shows no abnormalities, but communication data anomalies or connection failures occur when the device is networked? What are the reasons for these errors? This article will reveal the abnormality of RS-485 networking from the perspective of threshold levels. The RS-485 bus is widely used in … Read more
Currently, common serial interfaces include UART, 232, 422, 485, CAN, etc., but for beginners, it is generally difficult to understand their differences and when to use them. In industrial applications, not all serial interfaces are the same. For instance, the RS-485 serial interface meets the requirements of high speed and industrial robustness, making it a … Read more
I am Lao Wen, an embedded engineer who loves learning. Answer: Differences between STM32F1 and F4:Different cores: F1 has Cortex-M3 core, F4 has Cortex-M4 core; Different main frequencies: F1 has 72MHz, F4 has 168MHz; Floating-point operations: F1 has no floating-point unit, F4 has one; Functional performance: F4 peripherals are richer and more powerful than F1, … Read more
Scan to follow "Learn Embedded Together", learn together, grow together. 1. What are the differences between STM32F1 and F4? Different cores: F1 has Cortex-M3 core, F4 has Cortex-M4 core; Different clock frequencies: F1 has a clock frequency of 72MHz, F4 has a clock frequency of 168MHz; Floating-point operations: F1 has no floating-point unit, F4 does; … Read more
IIC IIC (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS for connecting microcontrollers and their peripheral devices. The I2C bus transmits information between the bus and devices using two lines (SDA and SCL), enabling serial communication between the microcontroller and external devices or bidirectional data transfer between the master and slave devices. … Read more