deathsilence.github.com's People
deathsilence.github.com's Issues
树莓派 改开机Logo 隐藏开机日志
网上关于隐藏开机日志的教程多是基于Wheezy 的,但是在Jessie下不能全部隐藏。经过尝试后终于找到完全隐藏的方法。
一、隐藏开机自检彩虹画面
sudo nano /boot/config.txt
在最后加上 disable_splash=1
二、隐藏开机日志
sudo nano /boot/cmdline.txt
在最后加上
logo.nologo loglevel=0 quiet splash fsck.mode=skip vt.global_cursor_default=0
sudo systemctl mask [email protected]
三、显示Logo
sudo apt-get install plymouth plymouth-themes
sudo apt-get install pix-plym-splash
cd /usr/share/plymouth/themes/
mkdir mytheme & cd mytheme
sudo nano mytheme.plymouth
输入一下内容:
[Plymouth Theme]
Name=MyTheme
Description=MyTheme
ModuleName=script
[script]
ImageDir=/usr/share/plymouth/themes/mytheme
ScriptFile=/usr/share/plymouth/themes/mytheme/mytheme.script
然后:
sudo nano mytheme.script
输入一下内容:
flower_image = Image("icon.png");
screen_ratio = Window.GetHeight() / Window.GetWidth();
flower_image_ratio = flower_image.GetHeight() / flower_image.GetWidth();
if (screen_ratio > flower_image_ratio)
{ # Screen ratio is taller than image ratio, we will match the screen height
scale_factor = Window.GetHeight() / flower_image.GetHeight();
}
else
{ # Screen ratio is wider than image ratio, we will match the screen width
scale_factor = Window.GetWidth() / flower_image.GetWidth();
}
scaled_flower_image = flower_image.Scale(flower_image.GetWidth() * scale_factor*256/1920,
flower_image.GetHeight() * scale_factor*256/2100);
flower_sprite = Sprite(scaled_flower_image); # Create the a sprite using the scaled image
flower_sprite.SetX(Window.GetWidth() / 2 - scaled_flower_image.GetWidth () / 2); # Place in the centre
flower_sprite.SetY(Window.GetHeight() / 2 - scaled_flower_image.GetHeight() / 2);
flower_sprite.SetZ(-10000); # Place right at the back
主题制作好后:
sudo plymouth-set-default-theme mytheme
https://raspberrypi.stackexchange.com/questions/36657/hide-complete-boot-message-from-rpi-booting
https://unix.stackexchange.com/questions/56531/how-to-get-fewer-ttys-with-systemd
https://github.com/HerbFargus/Raspberry-Pi-Scripts/wiki/Plymouth
https://github.com/notro/fbtft/wiki/Bootsplash
NRF24L01
两个NRF24L01要互相通信,一下参数需要一直:
Channel
Data Rate
AutoAck
CRC Length
Address Length
Address
Payload length
这几天调试stm32 和 arduino nrf24l01 通信,一直调不通。原因就是两个设备用的两个不同的库对address的字节顺序不一致导致,把其中一个的地址倒序后才可以通信。
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.