Notes on the development of peripheral driver library 9: SHT1x series temperature and humidity sensor driver

In our products, we often need to test the temperature and humidity data. There are many methods and modules to detect temperature and humidity, among which SHT1x series temperature and humidity sensor is a low cost and easy to use temperature and humidity detection module. Let's talk about how to re ...

Added by Rithiur on Sat, 27 Jun 2020 10:18:00 +0300

Change the password of Apache ActiveMQ

Related abbreviation abbreviation explain MQ In this article, we specifically refer to Apache ActiveMQ $ACTIVEMQ_HOME MQ installation directory Modify the console login password of MQ Since MQ is started in the jetty container, you only need to change the following two places to change the ...

Added by vito336 on Sat, 27 Jun 2020 09:32:42 +0300

[big data application technology] task 8: reptile integrated task

All requirements of this time come from: https://edu.cnblogs.com/campus/gzcc/GZCC-16SE2/homework/3075 preface This job is to crawl the information about python's relevant positions on the pull hook network. Through crawling the data such as position id, city, full name of the company, welfare treatment, work place, education requirements, wor ...

Added by jblallement on Sat, 27 Jun 2020 09:09:45 +0300

Alipay app payment server access (certificate mode)

Alipay has paid a lot of access documents. Because of the key configuration error, it has been returning to the 4000 error code for a half afternoon. The overall development flow chart is as follows: 1. First create the APP and sign the APP payment capability Official documents: Preparation befo ...

Added by dujed on Sat, 27 Jun 2020 08:18:19 +0300

Metacharacters and grouping of python regular expressions

1, Regular expression 1.1 understanding of regular expressions and basic methods of regular use in python 1.1.1 understanding of regular expressions The pattern of a string consisting of two characters: normal text character and special character (metacharacter), . Metacharacters are of special signif ...

Added by orbitalnets on Sat, 27 Jun 2020 07:15:29 +0300

GO Manual Processing of TCP Packets

Application Scenarios Use custom communication protocol in most TCP communication scenarios image.png Sticky Packet Processing Principle: Buffer data sent by clients N times into a single packet by the size of the packet in the request header For example: Request header takes up 3 bytes (instruction header 1 byte, packet length 2 bytes), ...

Added by kellerkind on Fri, 26 Jun 2020 19:08:50 +0300

[Python basics] day6 - set

set It is the basic data type of python to combine different elements to form a set Properties of the collection: De duplication, a list programming set, will automatically de duplication Relation test: test the intersection, difference, union and other relations between two sets of data It d ...

Added by ddrummond on Fri, 26 Jun 2020 11:33:31 +0300

Notes of the third lecture in class NSD2005

Notes of the third lecture in class NSD2005 1, KVM construction and management 10.1 KVM components 10.2 KVM management command 10.3 composition of KVM virtual machine 10.4 manually clone KVM virtual machine 10.5 manually clone kvm virtual machine (virsh edit virtual machine name) 10.6. Delete KVM vi ...

Added by gotserv on Fri, 26 Jun 2020 09:45:55 +0300

pxe+kickstart+dhcp+tftp+httpd to realize unattended installation of CentOS7 system

Article catalog 1, Introduction 1. What is PXE 2. Working process of PXE 2, Realize network manual installation 1. System environment preparation 2. Install and configure dhcp service 3. Install and configure tftp service 4. Install and configure httpd service 5. Configure PXE boot program (1) PX ...

Added by webweever on Fri, 26 Jun 2020 09:39:26 +0300

Java multithreading basic producers and consumers

Java multithreading Foundation (12) producers and consumers 1, Producer and consumer model The problem of producer and consumer is a typical multithreading problem, which involves "producer", "consumer", "warehouse" and "product". Their relationship is as follows: ① The producer only produces when the ...

Added by robburne on Fri, 26 Jun 2020 09:26:30 +0300