Program idea of FPGA and MCU

FPGA sends 32-bit data to MCU at 9600 baud rate, and then MCU parses the data and displays it on the display screen Generation of baud rate: 9600bps means that 9600 bits are sent every second, that is, the time of one bit is 1/9600. The FPGA board is equipped with a 50m crystal oscillator, […]

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Universal serial bus USB of pic18f2455/2550/4455/4550

Pic18fx455/x550 series devices include full speed and low-speed compatible USB serial interface engine (SIE), which allows high-speed communication between any USB host and PIC microcontroller. The SIE can be directly connected to the USB using an internal transceiver or via an external transceiver. The internal 3.3V regulator can also be used as the power supply […]

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Design of data acquisition system based on PIC MCU USB interface

The function of the designed data acquisition system is divided into three parts: data acquisition part, data communication part and data processing part. The data acquisition part shall include: a/d converter, timing, mode control and data buffer function. It shall be able to accept commands from the host, control the a/d converter to collect data […]

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What is the CAN bus? How to design a CAN bus acquisition mass storage system?

introduction Can (controller area network) bus is a serial data communication protocol developed by Bosch Company in Germany in the early 1980s to solve the data exchange between many control and test instruments in modern vehicles. Its short frame data structure, non-destructive total linear arbitration technology and flexible communication mode meet the requirements of real-time […]

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Esp8266 application case obtains network weather data based on STM32 core board

Hardware platform:Esp8266 WiFi module, STM32 core board, OLED display Implementation method: 1. The working mode of esp8266 WiFi is sta+tcpclinet; 2. communication protocol: http 3. weather data acquisition platform: Xinzhi weather The esp8266 WiFi module has its own tcp/ip network protocol stack, and completes the network mode configuration through the at instruction set.Zhixin weather uses […]

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What is RS232 serial port? Introduction to RS232 serial port

Serial port is a very common device communication protocol on computer. Electrical characteristics of serial port: 1) the longest distance of RS-232 serial port communication is 50 feet; 2) RS232 can achieve two-way transmission, full duplex communication, and the maximum transmission rate is 20kbps. 3) the digital quantity transmitted on RS-232C adopts negative logic, and […]

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MAX232 Chinese data and its application

MAX232 chip is a single power level conversion chip designed by Maxim company for RS-232 standard serial port, which uses + 5V single power supply. The device is particularly suitable for battery powered systems because its low-power off mode can reduce the power consumption to less than 5uw. Max225, max233, max235 and max245 / max246 […]

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Design of LED dot matrix screen controller system using FPGA

LED screen is more and more widely used in modern information society, and its soul is its internal controller. Most of the traditional LED controllers are designed based on single chip microcomputer. This controller is enough to control single-color or two-color dot matrix, but it is very difficult to use it to control multi-color LED […]

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