Super detailed! A must-see for newbies! STM32–EXTI external interrupt

1. What is an external interrupt? External interrupts are interrupts triggered by external events on pins external to the microprocessor or microcontroller, usually GPIO pins. These external events can be triggers from external devices, sensors, or other external sources. 2. Details of external interrupt The registers managed by the AFIO clock include AFIO_EVCR (time control […]

Kubernetes connects to external Ceph

Kubernetes connects to external Ceph kubernetes environment Ceph environment Method 1 (manually created) kubernetes node node configuration ceph Install ceph-common (note that the versions must be consistent) Copy the /etc/ceph/ file under the ceph cluster admin node to the kubernetes node. Ceph cluster creates pool pool and rbd Pod is mounted directly Prepare to test […]

WinForm application interface development practice – how to integrate external API interface calls in a hybrid framework

In our regular business processing, most of the internal processing interfaces are database-related and based on the Winform development framework of hybrid development. Although when the client calls, the general choice is also based on Web API calls, but the back-end We may not only process our business database, but also call other external interfaces, […]

Operations of hive internal tables and external tables

Table of Contents Create table statement type of data Classification of tables Classification The difference between internal tables and external tables Example Basic operations of internal tables Knowledge points Example Basic operations of external tables Example View/modify table Knowledge points Example Default separator Example quick mapping table Knowledge Example Data import and export File data […]

The difference between _cdecl and _stdcal and the function of extern “c

Article directory Purpose _stdcal _cdecl result dll extern “c” Replenish Purpose 1) Understand the difference between _cdecl and _stdcal under Windows, so that you can better use modified functions to make function calls. There are several calling methods, divided into C style and Pascal style. The overall difference. _cdecl (c/c++ default, supports variable parameter functions, […]

Golang os package: process creation and termination, running external commands

The os package and its subpackage os/exec provide methods for creating processes. Generally, the os/exec package should be used first. Because the os/exec package relies on the key process creation APIs in the os package, for ease of understanding, we first discuss the process-related APIs in the os package. part. Creation of process In Unix, […]

ESP32 IDF Development Driver Chapter 5 GPIO and External Interrupt Explanation

ESP32 IDF Development Driver Chapter 5 GPIO and External Interrupt Explanation 1 Introduction 2. Principle 3. Related functions 4. Software design 5. Example analysis 6. The following are the debugging results: Don’t get lost-Navigation bar Quickly navigate to find what you want (article directory) If this article is useful to you, please like and save […]

Customize SpringMVC interceptor to implement internal and external network access control functions

This article briefly introduces how to customize a SpringMVC interceptor and implement specific functions through the interceptor. First, you need to create a custom interceptor class that implements the HandlerInterceptor interface. package cn.edu.sgu.www.mhxysy.interceptor; import cn.edu.sgu.www.mhxysy.feign.FeignService; import cn.edu.sgu.www.mhxysy.property.NetworkProperties; import cn.edu.sgu.www.mhxysy.restful.JsonResult; import cn.edu.sgu.www.mhxysy.restful.ResponseCode; import cn.edu.sgu.www.mhxysy.util.IpUtils; import com.alibaba.fastjson.JSON; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; import org.springframework.web.servlet.HandlerInterceptor; […]