How to set the baud rate of the CAN bus fiber optic converter

The can bus fiber optic converter is a device that can convert CAN bus data into optical signals for transmission. It is a very typical remote CAN relay tool. Like many CAN gateway devices, the CAN-to-fiber repeater also needs to be configured before use, but the content of the configuration is relatively simple, that is, […]

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Why does CANFD compensate for sending delays?

In the CANFD protocol, there is an important concept TDC (Transmitter Delay Compensation), that is, transmission delay compensation. Why is there a sending delay, and why does CANFD compensate for the sending delay? Why is there a sending delay? As we all know, when the CAN controller sends a signal, it is sent to the […]

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TTL, RS232, RS485 overview and transmission distance

Two days ago, in my technical exchange group, I saw everyone discussing the issue of “TTL, RS232, 485 transmission distance”. Today I took the time to share some related content. Overview There may be many readers who don’t know what TTL, RS232, and 485 are. This section briefly outlines what they are. 1.TTL level TTL: […]

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Getting started with embedded CAN bus

Introduction The CAN bus is developed by the German BOSCH company, and the maximum speed can reach 1Mbps. The fault tolerance capability of CAN is particularly strong, and the CAN controller has built-in powerful fault detection and processing mechanisms. In addition, unlike traditional networks (such as USB or Ethernet), CAN nodes do not transmit large […]

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What exactly are TTL, RS232, and 485?

  Overview Many readers may not knowWhat exactly are TTL, RS232, and 485?, this section briefly outlines what they are. 1.TTL levelTTL:Transistor Transistor Logic, transistor-transistor logic level. For example: 0V represents a logic low level, and 5V represents a logic high level. For example, the logic high level output by the serial port pin of the STM32 […]

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Introduction and function description of CAN analysis tool software

Software Description ECAN Tools is a small-volume, green-free installation, ready-to-download and completely free CAN analysis tool software developed by Chengdu Ebyte Electronic Technology Co., Ltd. With CAN analyzer, it can realize CAN message analysis, CAN data packet transmission, CAN frame filtering, bus monitoring and other practical functions. The software supports multiple languages, supports Simplified Chinese […]

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Design of UART communication based on FPGA/CPLD device and high-level language VB

introduction With the development and wide application of computer technology, especially in the field of industrial control, the application of computer communication is particularly important. Although serial communication greatly reduces the connection between devices, it brings problems such as serial/parallel conversion and bit counting, which makes serial communication technology more complicated than parallel communication technology. […]

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UART adaptive top-down design based on FPGA device

UART (Universal Asynchronous Receiver Receiver) is a widely used serial data transfer protocol. The UART allows full-duplex communication over the serial link. Dedicated UART integrated circuits such as 8250, 8251, NS16450, etc. are already quite complex, and some contain many auxiliary modules (such as FIF0). In practical applications, only a few basic functions of UART […]

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CAN FD, the next "air outlet" for automotive electronics

With the rapid development of electric vehicles and driverless vehicle technology, as well as the increase of advanced driver assistance systems and human-computer interaction in vehicles, the traditional CAN bus is becoming more and more powerless in terms of transmission rate and bandwidth. Therefore, the improved version of CAN The bus came into being. From […]

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About the synchronous jump width SJW value in the rate register

Can bus has always been known for its stability and high fault tolerance. To achieve this effect, its unique synchronization mechanism is very important. This article will explain the synchronization mechanism of CAN bus and the role of SJW. There are two ways of CAN bus synchronization: hard synchronization and resynchronization. Hard synchronization When the […]

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