PostMan is a relatively convenient interface testing tool, but during use, API requests may be created, but the API URL will change as the server IP address changes. In this case, it would be very troublesome to re-modify the URL for every API, so PostMan also provides environment variable settings. We can set the current […]
Tag: ria
Frame structured serial data receiver – Verilog implementation
Use Verilog to implement a frame-structured serial data receiver; Serial data input is: NRZ data plus bit clock (BCL) format, high-order bit first The frame structure is: 8 bits constitute a word, and 64 words constitute a frame. The first word of each frame is the synchronization word. The sync word pattern is stored in […]
Implementation of serial port receiving data thread under qt
1. Implementation of serial communication class Create a class QSerialCommThrd that implements serial communication. It inherits from QObject. Yes, it is QObject and not QThread. Define a QSerialPort pointer within the class to read and write the serial port. The specific definition of the class is as follows: #ifndef QSERIALCOMMTHRD_H #define QSERIALCOMMTHRD_H #include <QObject> #include […]
Serialization and deserialization of PowerShell objects
PowerShell / Operation and Maintenance Serialization and deserialization of PowerShell objects Author: Li Juncai (jcLee95): https://blog.csdn.net/qq_28550263 Email:[email protected] This article address: https://blog.csdn.net/qq_28550263/article/details/132871258 Directory 1. Overview 2. Serialization: Convert objects into strings 3. Deserialization: Restore object from string Appendix: Command and option parameter analysis F.1 ConvertTo-Json command F.2 ConvertFrom-Json command Example Example 1: Convert DateTime object to […]
This article teaches you how to use the powerful ClickHouse materialized view
Number of words in this article: 11558; estimated reading time: 29 minutes Author: Denys Golotiuk Reviewer: Zhuang Xiaodong (Weizhuang) Introduction In the real world, data not only needs to be stored but also processed. Processing is usually done on the application side. However, some key processing points can be moved to ClickHouse to improve data […]
stm32 configures the serial port interrupt and sets the communication protocol to control the Hall DC motor
Configure cubemx generation project Add serial port interrupt code and communication protocol Attention issues first step Configure download interface Configure crystal oscillator interface Open usart1, configure it for asynchronous communication, set the basic parameters to default, and check the interrupt option below. Then configure the clock according to the development board you have, you can […]
python self (2) slice dictionary traverse delete add modify query definition function function return value scope serialization exception error urllib uses one type and six methods to download video audio picture
Slice # # Slice # s = ‘hello word’ # # The subscript index is 0 # print(s[0]) #h # # Left closed and right open (left starts with the subscript, right is several index values), for example, 4 index values starting from 0 # print(s[0:4]) #hell # # Change the starting position of the […]
Python serial port assistant function (0/4)
util_serial.py Code to implement serial port UI interface # -*- coding: utf-8 -*- importsys from PyQt5.QtCore import * from PyQt5.QtGui import * from serial.tools.list_ports import comports from widget_serial import * from PyQt5.QtGui import QFont from data_check import * ”’ main tool ”’ debug=0 class SerialWidget(QWidget): _instance = None # Class variable to store the singleton […]
[Linux] Process priority, environment variables, process address space
Article directory 1. Process priority basic concept View system processes PRI and NI PRI vs NI Command to modify process priority Other concepts 2. Environment variables basic concept View environment variables method Common environment variables Test PATH Commands related to environment variables How environment variables are organized How to get environment variables through code Get […]
STM32 (6) library function serial port sending and receiving examples (interruption)
STM series article directory Article directory STM series article directory Preface 1. Serial port configuration steps 2. Actual writing 1. Code part ①Redirect fputc function ②GPIO Foreword This article uses library functions to write a simple serial port transceiver, using the STM32F103RCT6 development board (partly from Zhengdian Atom). STM32F103RCT6 can provide up to 5 serial […]