For business cooperation, please contact QQ: 3350579506 For more exciting consultations, please follow Electrician 365（diangong365） Electrician Home QQ Group: Group ①: 468193845 Group ②: 522898769 1. What is the RS-485 Interface? How Does It Compare to RS-232-C? Answer: Since the RS-232-C interface standard was introduced earlier, it inevitably has some shortcomings, mainly four points: The … 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
Recently, I played with Microchip’s wireless WiFi module, which is quite simple to configure and can connect to a microcontroller via serial. Today, I will share how to quickly configure this module to connect to home WiFi. Upon receiving any module, the first step is to restore the factory settings and configure it to connect … Read more
Introduction to SPI Interface and Features The standard SPI interface has 4 signal lines. Signal Function Direction SCLK Clock signal line, used for synchronizing communication data master->slave MOSI Master device output master->slave MISO Master device input slave->master CS Slave device select signal line, commonly referred to as chip select signal line, also known as NSS, … Read more
What is SPI SPI stands for Serial Peripheral Interface in English, which, as the name suggests, is a serial peripheral device interface. It was first defined by Motorola in its MC68HCXX series processors. SPI is a high-speed, full-duplex, synchronous communication bus that only occupies four lines on the chip’s pins, saving pin space and providing … Read more
Source: CSDN: https://blog.csdn.net/an520_/article/details/125479812, copyright belongs to the author, please contact for removal! Because it is a good article, I hope to share it with more people! UART, SPI, I2C and other serial communications are very common communication methods in embedded development. The underlying communication principles of these protocols are actually not difficult, but many beginners … Read more
Click the blue words Follow us 1. Introduction 1. Concept USART (Universal Synchronous Asynchronous Receiver Transmitter) is a serial communication device that can flexibly perform full-duplex information exchange with external devices. UART (Universal Asynchronous Receiver/Transmitter) is a bidirectional, serial, asynchronous communication bus that can achieve full-duplex communication using only one data receiving line (RXD) and … Read more
1. Serial Port Activation Process Before we start, let’s take a look at a few demo programs for serial ports from different chips. These include the STM32 V3.5 standard library, the official demo for nRF52832, and the official DEMO for the STC15 series microcontroller with a 51 core. From the above demo examples and the … Read more
The address-specified write function supports EMMC_AUTO_ISP (flying line programming), EMMC_AUTO (offline 8x programming), EMMC_AUTO_4BIT (offline socket 4x programming), and EMMC_AUTO_1BIT (offline socket 1x programming). The operation methods for several programming modes are the same, and we will take EMMC_AUTO as an example to introduce the “custom address writing” function. After selecting the EMMC_AUTO function, click … Read more
Introduction RS-485 and CAN are both serial communication protocols. They allow for the arrangement of multiple devices within a single system, significantly reducing cable lengths. Their differential design is suitable for environments with strong interference, and both use 120 Ω termination resistors, equipped with internal over-voltage circuits for fault protection.RS-485 and CAN have many similarities, … Read more