cyc_to_led cyc led to
Grafana学习（5）——Introduction to histograms and heatmaps
A histogram is a graphical representation of the distribution of numerical data. It groups values into buckets (sometimes also called bins) and then c ......
Grafana学习（3）——Introduction to time series
Imagine you wanted to know how the temperature outside changes throughout the day. Once every hour, you’d check the thermometer and write down the tim ......
[949] Using re to extract unstructured tables of PDF files
Here is the problem, this unstructured table of a PDF file can not be extrcted as a table directly. We can only extract the whole texts of every page. ......
git SSL certificate problem: unable to get local issuer certificate
错误： git SSL certificate problem: unable to get local issuer certificate 这个问题是由于没有配置信任的服务器HTTPS验证。默认，cURL被设为不信任任何CAs，就是说，它不信任任何服务器验证。 解决方法 git config - ......
Welcome to YARP - 8.分布式跟踪
Welcome to YARP - 1.认识YARP并搭建反向代理服务 Welcome to YARP - 2.配置功能 2.1 - 配置文件（Configuration Files） 2.2 - 配置提供者（Configuration Providers） 2.3 - 配置过滤器（Configur ......
解决问题：Unable to start embedded container; nested exception is java.lang.NoSuchMethodError: org.apache.catalina.Context.addServletMapping(Ljava/l
因为有重复的jar 原因：springboot有自己的tomcat运行环境我们又在构件路径中添加了tomcat 解决方法：把项目构件路径中的tomcat给移除 ......
To100个供您免费学习编码的网站
100+学习的编程网站_国外篇 1. BitDegree BitDegree is a blockchain-powered learning platform offering various free and paid courses on crypto and digital skills, ......
Netherlands: Soil Protection Act to keep tulips beautiful
Soil pollution management in the Netherlands has three characteristics. Although the natural environment, population and development conditions of the ......
STM32-LED灯闪烁
#include "stm32f10x.h" // Device header #include "Delay.h" int main(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); GPIO_InitTypeDef GPIO ......
ffmpeg --- C++项目链接库接口时提示找不到定义undefined reference to
问题：使用CMake组织项目，库和CMakeLists.txt都检查过没有问题，但是在链接时就是提示找不到函数定义。 原因：项目使用的是C++，ffmpeg是C，直接include ffmpeg的头文件，因为C++和C对函数接口的解释不同，所以就找不到接口定义 正确用法： #include "std ......
Configuration error: VRRP definition must belong to an interface
lobal_defs { } vrrp_instance VI_1 { state MASTER #指定A节点为主节点 备用节点上设置为BACKUP即可 interface eth0 #绑定虚拟IP的网络接口 virtual_router_id 51 #VRRP组名，两个节点的设置必须一样，以指明各 ......
vue3_Extraneous non-props attributes (class) were passed to component but could not be automatically inherited because component renders fragment or text root nodes.
今天的开发中发现了这个问题 Extraneous non-props attributes (class) were passed to component but could not be automatically inherited because component renders frag ......
[946] Add a new row to a Pandas DataFrame
To add a new row to a Pandas DataFrame, we can use the append method or the loc indexer. Here are examples of both methods: Using append method: impor ......
Applying sewage charging system to deal with water pollution problem in Russia.
What is the sewage charging system? Although manufacturing has always been a key driving force for China's economic growth, it is also the root cause ......
yolo v5 下载新数据集被防火墙proxy挡住，如何设置proxy. torch.hub.download_url_to_file问题；
当我们想运行yolo v5时候，我们发现有的时候，由于网关问题，proxy会成为阻碍。例如如下错误； 将代码如下修改，就能改好： 1. 原始代码： 2. 增加proxy设置： import urllib.request import torch.hub # 设置代理信息 proxy_support ......
sysbench 安装 postgres 测试环境（ Connection to database failed: SCRAM authentication requires libpq version 10 or above）
报错Connection to database failed: SCRAM authentication requires libpq version 10 or above的解决方案 1、下载安装包 https://gitee.com/xiaohai008/postgresql10-devel ......
利用基本定时器实现LED的定时亮灭
本次实验基于stm32f407，基本定时器是TIM6和TIM7，这里用TIM6，让灯每秒改变一下状态。 对于基本定时器，时基如下： CK_PSC来源于内部时钟，是内部时钟频率两倍，查阅数据手册 TIM6挂载到APB1总线，故CK_PSC=42Mhz2=84Mhz。另外说一下，高级定时器TIM1、TI ......
使用固件库点亮LED流程
1.在USER中新建两个驱动文件 2.在工程里面添加.c文件 3.c文件包括.h文件，再编译一下就能直接包含进来 4.在魔术棒里添加头文件路径 5.头文件里写声明以防重复编译 6.c文件里写初始化函数，相关函数从固件库里面找 7.在主函数里面声明即可点亮 ......
Learning to rank: from pairwise approach to listwise approach
目录概ListNetPermutation ProbabilityTop-k Probability Cao Z., Qin T., Liu T., Tsai M. and Li H. Learning to rank: from pairwise approach to listwise appr ......
13_LED点阵屏
LED点阵屏 介绍 显示原理 原理图 74HC595 C51的sfr,sbit 选择列来显示矩阵LED main.c #include <REGX52.H> #inlcude "Delay.h" sbit mRCLK=P3^5; //RCLK sbit mSRCLK=P3^6; //SRCLK sb ......
qemu-kvm: error: failed to set MSR x38d to x0x 【问题解决】
问题 解决 创建报错 在下面的 issues 找到解决办法 https://github.com/GNS3/gns3-server/issues/1774 可以尝试在 VM 上禁用 MSR，然后检查是否可以启动 qemu 计算机 添加内核模块参数 临时修改 echo Y > /sys/module/ ......
[Javascript] Using Generator to create a number generate with condition
const generateTimeMs = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min /** * A generator which can generate numbers based on settings ......
Can't locate Devel/Size.pm in @INC (you may need to install the Devel::Size module)
001、perl 模块报错如下：Can't locate Devel/Size.pm in @INC (you may need to install the Devel::Size module) 002、解决方法： 安装该模块 (base) [b20223040323@admin1 003_an ......
failed to configure a datasource: ‘url‘ attribute is not specified and no em
问题场景 在Spring Boot中整合MySQL、Mybatis进行数据库开发时，按照正常步骤添加了相关数据库的依赖，也进行了必要的数据库配置，结果在项目启动时出现如下异常信息： *************************** APPLICATION FAILED TO START *** ......
2023版 STM32实战1 LED灯驱动(电路与代码都讲解)
电路图 常规画法（带限流电阻计算公式） 设LED 电流为20mA(统一单位为 0.02A) 电压为3.3V 限流电阻=(电源电压-负载正向工作电压)/工作电流 限流电阻=(5V-3.3V)/0.02mA=1.7/V0.02A=85R 省事画法（直接用IO输出） 代码（直接拷贝使用） 找对引脚！！！这 ......
hudson.plugins.git.GitException: Failed to delete workspace
持续集成环境（git + gitlab + jenkins + pipeline + maven + harbor + docker + k8s）之前都是ok的，突然就报错了： Cloning the remote Git repository Cloning repository git@192. ......
Thinkphp5报错：htmlentities() expects parameter 1 to be string, array given
注意注意： 本文对应 ThinkPHP5.1 版本。 前言 - 出现问题的原因 为避免出现 XSS 安全问题，Thinkphp5.1 默认变量输出都会使用 htmlentities 方法进行转义输出。 如果不想被转义输出，模板渲染时，需要在变量后面加上 raw方法，如：{$data|raw} 一、出 ......
ERROR: Permission to stevenlong123/test.git denied to smith-bing. fatal: Could not read from remote
第一次练习git提交代码到github时出现的错误。这里就是说github服务器拒接了我们，不支持远程连接。发现是因为我使用的是ssh来提交的，ssh是安全连接需要通信双方各有一对公钥私钥，github服务器不会自动交换公钥，需要手动在github存储库中部署自己电脑的公钥。使用git命令“ls - ......
unable to find valid certification path to requested target
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathB ......
How To Delete Reservations Using Standard API INV_RESERVATION_PUB.Delete_Reservation (Doc ID 2219367.1)
Solution Summary: The reservation API INV_RESERVATION_PUB.Delete_Reservation will delete reservations accepting the reservation id and optionally seri ......