raspbian stretch

Overview This page explains how to rebuild the kernel image for the RPi. There are two possible routes available: Both of these routes are covered below, however, you are stronugly recommended to follow the cross compilation route. The low processing power of the RPi means that a local compile will take too hours.Example Checklist/Roadmap This section serves to hold a new user's hand just a bit more than some of the other more generic information below in the document. to get more information on

How to Use QEMU to simulate Raspberry Pi The following describes how to use QEMU to simulate Raspberry Pi. After using this method, the system can be tested without a Development Board. Development Environment The Host OS environment used for testing is Debian 7.2 Wheezy amd64. Guest OS is the Debian Raspbian () after the Raspberry Pi is optimized ). Append: Debian 8 jessie amd64, QEMU 2.0.0, and Raspbian

Official Installation Tutorial Address:http://wiki.ros.org/ros/installationChinese installation Tutorialhttp://lib.csdn.net/article/embeddeddevelopment/30200Raspberry Pi operating system for Raspbian, installed Ros version for IndigoFirst add Ros repositories to the source and update the source and system' echo "Deb Http://packages.ros.org/ros/ubuntu wheezy main" >/etc/apt/sources.list.d/ros-latest.list ' $ wget https: // Raw.githubusercontent.com/ros

Chkconfig Installation In the beginning, because of the raspbian reason, the system is not brought chkconfig this command, root@raspberrypi:~# Chkconfig-bash:chkconfig:command not found So you have to install it manually. Installation is very simple Apt-get install chkconfig can, The installation process is as follows: root@raspberrypi:~# apt-get Install chkconfig Reading Package lists ... Done Building Dependency tree Reading state informat

Raspi-config is a Raspberry Pi configuration tool designed and maintained by Alex Bradbury for Raspbian Systems.1. Usage (usage)When you start Raspbian for the first time, there will be rasp-config hints. To open this configuration tool, simply enter the following command on the terminal:sudo raspi-configsudo administrator permissions are required because the files you want to modify are not owned by the PI

1. Preparatory work: 1.1 Development environment System Ubuntu 16 (64-bit) 1.2 Download Source: Https://github.com/raspberrypi Linux: Raspberry Pi kernel source Tools: Raspberry Pi cross-compilation tool Download mode: (1) Web download Download zip directly (2) Command download git clone--depth=1 Https://github.com/raspberrypi/linux git clone https://github.com/raspberrypi/tools Save path is ~/raspberry/under 2. Determine version 2.1 View information about the current Raspberry Pi compiler root

mouse over data SummaryThe curve control is one of the many controls in the component, so why write a blog separately, just because the curve control is much more complex than the other controls, not a few properties, the following is an enumeration of the characteristics of this curve control: Provides convenient API calls to display the content of the curve information without the need for complex configuration Some information of the curve interface can be freely customized

: scatterview Horizontalalignment = "Stretch" Name = "Scatterview1" Verticalalignment = "Stretch" > Image Height = "150" Horizontalalignment = "Left" Name = "Image1" Stretch = "Fill" Verticalalignment = "TOP" Width = "200" Source = "/Demo; component/images/chrysanthemum.jpg" /> Image Height = "150" Horizontalalignment = "Lef

, so it is recommended that you use a grid generic instead grid-template . Grid-column-gap Grid-row-gap Specify the size value of the grid line: : Length Value . container{ grid-column-gap: . container{ Display:grid; Grid-template-columns:repeat (4, 50px); Grid-template-rows:repeat (4, 80px); grid-column-gap:10px; grid-row-gap:15px;} Grid-gap A shorthand grid-row-gap and a grid-column-gap value: : Length Value . container { grid-gap: Justify-items Aligns the contents of the grid alo

Flexboxis a layout module, not a simple property, which contains the attributes of the parent and child elements.FlexboxThe main idea of the layout is that elements can be resized to fit the available space, and when the available space becomes larger, the flex element will stretch to fill the available space and will shrink automatically when the flex element exceeds the free space. In short, the flex element allows you to automatically scale your la

alignment of the elastic box element in the direction of the side axis (vertical axis).Align-items:flex-start | Flex-end | Center | Baseline | Stretch Flex-start: The boundary of the starting position of the side axis (longitudinal axis) of the elastic box element is close to the start boundary of the side axis of the row. Flex-end: The boundary of the side axis (longitudinal axis) of the elastic box element is positioned close to the en

line: : Length Value . container{ grid-column-gap: . container{ Display:grid; Grid-template-columns:repeat (4, 50px); Grid-template-rows:repeat (4, 80px); grid-column-gap:10px; grid-row-gap:15px;} Grid-gap A shorthand grid-row-gap and a grid-column-gap value: : Length Value . container { grid-gap: Justify-items Aligns the contents of the grid along the row axis (rather than align-items along the column axis), and applies to the values of the grid items within all the grid containers:

The following describes the image and imagebrush element objects:In Silverlight, image objects and image brushes are used to display images. Currently, only PNG and jpg formats are supported. Therefore, image formats in other formats, such as GIF, BMP must be converted to PNG or JPG before it can be used in Silverlight. First, we will introduce the image usage as follows:Width and height are system. Double, and stretch has four modes: None, fill, unif

poor. The reason is very simple, because the original size is 24x60, now the whole picture is stretched to 150x50, more serious is the picture of the 4 corners.Some people may immediately think of a solution, you call art to make the picture a little bit better, how to stretch all right. Yes, it's a solution, but it's not recommended. The reason is very simple: 1. Large picture, resulting in large installation package, loaded into memory is also larg

Build Your own LoRaWAN gateway, Step 1: Build the software Introduction If you only care: to create a LoRaWAN gateway, please refer to "Spend one hours to build their own LoRaWAN gateway" https://blog.csdn.net/jiangjunjie_2005/article/details/79758720 If you are interested in: building a LoRaWAN Gateway software system, then this article is more suitable. Although it requires a bit of Linux knowledge, it is something that every "patient" person can master. 1th step: Install Linux 1.1 Prepare S

QEMU virtual machines can play Raspberry Pi, as we all know. But the online tutorial is very old, all 2012. I downloaded the latest version of the Raspberry Pi system according to the tutorial how can not run up. Study for a long time, finally found a simple method, deliberately shared out. Reprint please note the source. If can help you solve the big problem, please give me a message to encourage. Thank you. The source of this article: http://www.cnblogs.com/chengchen/p/6751420.html 1. Download

1, border-image description, grammar　　Before CSS3, border can simply set some solid colors or several simple linetypes (such as solid,dotted,double,dashed , etc.).In CSS3 ,border-image implements a different picture effect for the border. Image > Number > percentage > Border-width > {1,4}]? [Stretch | repeat | round] {0,2}Tip: Border-image properties are not decomposed in real-world applications CSS3 border-image parameters:1, none: is the default

); × Internal control spacing is 5 mainLayout->setSpacing(5); * For the setstetchfactor function, borrow other articles (http://blog.csdn.net/lin49940/article/details/6033727 ): Here we will talk about the setstetchfactor function of qsplitter: The program is For B and A, their size is very small compared to the entire window. in this way, some extra space exists. The space can be allocated to B, A, or two parts equally. the space size of B and A is controlled by t

the eye dry. Also make sure the room and the office have enough light at work. If one day you walk out of the office and your eyes feel tingling, it means you don't have enough light in your office.Working in dim conditions can lead to myopia. Make sure you have enough light.2. Palm ExercisePalm exercise is necessary for those who are sitting in front of the computer all day.1. Warm-up preparation, shake your hand. Do a minute to avoid the flexion muscle tension. You can imagine that you've jus

also become distorted as the control background, which will be depressing. Fortunately, .9.png images provide the functions required. Procedure 1,Make your own PNG image, which must be a PNG image. You can also decompress the APK file of other applications and use the image resources in it. The Android system can also use image resources () 2,FindDraw9patch. batFile, open it, and drag the PNG image you want to process into it. Or file --> open 9 patch Black line above: horizontal