raspberrypi | Random Code I 've written for the Raspberry Pi

by misterblack1 Python Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | raspberrypi Summary

raspberrypi is a Python library typically used in Internet of Things (IoT), Raspberry Pi applications. raspberrypi has no bugs, it has no vulnerabilities and it has low support. However raspberrypi build file is not available. You can download it from GitHub.

Here is random code I've written for the Raspberry Pi. Apologies for the ugly coding and lack of comments. Since it's just for projects around the house, I do it quick and dirty without much thought to doing it right. None the less, may still be helpful to someone.

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Security

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Support

raspberrypi has a low active ecosystem.

It has 24 star(s) with 4 fork(s). There are 7 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. On average issues are closed in 820 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of raspberrypi is current.

Quality

raspberrypi has no bugs reported.

Security

raspberrypi has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

raspberrypi does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

raspberrypi releases are not available. You will need to build from source code and install.

raspberrypi has no build file. You will be need to create the build yourself to build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed raspberrypi and discovered the below as its top functions. This is intended to give you an instant insight into raspberrypi implemented functionality, and help decide if they suit your requirements.

Read the temperature .
Read raw lines from a temp file .

Get all kandi verified functions for this library.

raspberrypi Key Features

No Key Features are available at this moment for raspberrypi.

raspberrypi Examples and Code Snippets

No Code Snippets are available at this moment for raspberrypi.

Community Discussions

Trending Discussions on raspberrypi

Failure accessing a variable through its adress from another application

Unable to install JDK 16 on RPi

Linker cannot find local shared library

Cannot install kernel-devsrc

Yocto Add own Header and Lib file's to sdk

'NoneType' object has no attribute 'to_dict'

How to change buffer size for spidev on raspberry pi

Raspi4 WIFI-Access-Point Full-Tunnel directly into Wireguard

Do I need my own bsp layer and what should be placed there?

Kubernetes CrashLoopBackOff

QUESTION

Failure accessing a variable through its adress from another application

Asked 2021-Jun-12 at 21:39

I am working on a Qt application on my raspberry pi 4 and I want to create a dynamic variable and to use it in my Qt application , it is a counter and I don't want it to be reinitialized at zero on every execution of the application, I want to just use the address and increment the value on each execution.

so in my raspberry pi I created a variable

...

ANSWER

Answered 2021-Apr-09 at 12:00

The memory spaces of different processes on your system (e.g. the Qt application and your program with the counter) are mostly disjoint. Even when they use the same addresses - those are virtual, not physical, memory addresses, and get translated upon use, (typically) into addresses in physical memory.

That means that the Qt application does not, and cannot, have access to a counter variable in another process' memory space.

So... you will need another approach. Some possibilities:

The Qt application communicates with your monitor mini-app over some some socket.
No second process, but the Qt application locks a file, opens that file, reads the current counter from it, adds 1, writes it back, closes and unlocks.
Use some existing utility/system facility which keeps track of execution statistics (I don't know of one personally, but it might exist, depending on which OS you're running).

Source https://stackoverflow.com/questions/67006122

QUESTION

Unable to install JDK 16 on RPi

Asked 2021-Jun-10 at 15:46

I want to install the JDK 16 on a RPi 3B and I downloaded the Linux ARM 64 Compressed Archive from the Oracle site. Every time I run the command to check the version of java I get the same error: bash: ./java: cannot execute binary file: Exec format error

I already tried to untar it again and download the archive from zero, but I get the same error every time. Considering the RPi 3B not able to support the JDK16 for some reason, I downloaded and installed the Kit on a RPi 4 too, but the result is always the same. I used the checksum to make sure the downloaded archive was intact and it was.

Am I downloading the wrong package or have I missed anything important?

...

ANSWER

Answered 2021-Jun-10 at 15:45

It seems you are running a 32 bit ARM Linux (armv7l), you therefore cannot execute a 64 bit aarch64 JDK. You need to install the 32 bit version, the same way you installed the 64 bit JDK, or to install a 64 bit Linux distribution on your system.

Source https://stackoverflow.com/questions/67923755

QUESTION

Linker cannot find local shared library

Asked 2021-Jun-09 at 15:01

I'm trying a very simple exmaple to create a shared library and link to it. The shared library is as follows:

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ANSWER

Answered 2021-Jun-09 at 15:01

This is becuase you are using the -l flag.

When you use this flag (Rather than specify a library specifically) it assumes a certain naming convention.

Source https://stackoverflow.com/questions/67906546

QUESTION

Cannot install kernel-devsrc

Asked 2021-Jun-07 at 11:16

I'm trying to set up my environment to use Yocto's generated SDK to compile my out-of-tree module, but for some reason, I'm getting an error.

cp: cannot stat 'arch/arm/kernel/module.lds': No such file or directory

I'm using Poky distribution and meta-raspberrypi which is needed because I'm using the RPI ZeroW board. Apart from this everything works fine. I'm able to compile the entire image and load it on the board.

Here is the line I've added to local.conf

TOOLCHAIN_TARGET_TASK_append = " kernel-devsrc"

as I've found in the documentation.

Also below you can find the whole log from the compilation.

...

ANSWER

Answered 2021-Jun-07 at 11:16

Missing the module.lds file in the latest kernel. Apply the following source code as a patch in the kernel and build the image.

Source https://stackoverflow.com/questions/67753792

QUESTION

Yocto Add own Header and Lib file's to sdk

Asked 2021-Jun-07 at 06:04

i want to add .h and .lib files to a own created recipe to the sdk. I use cmake to build my lib's, with the sdk i can build it. My recipe name is served. (i want to add the served https://github.com/meltwater/served as a own recipe). in my served_0.1.bb File i add following:

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ANSWER

Answered 2021-Jun-07 at 06:04

Assuming that you have a recipe for served which compiles without errors.

The step to add served .h and lib files to sdk is to add below line to local.conf

Source https://stackoverflow.com/questions/67861043

QUESTION

'NoneType' object has no attribute 'to_dict'

Asked 2021-Jun-04 at 12:50

I'am quite new to python and I am developing a passport scanner with a RaspberryPi and the passport eye module. In the end it prints outs the outcome of the scanned image. However, I also want to print an outcome if the scanner isn't able tot detect a MRZ code.

I tried some things but couldn't figure it out, here is a example in short:

...

ANSWER

Answered 2021-Jun-04 at 12:50

From the official docs -

The returned object (unless it is None, which means no ROI was detected) contains the fields extracted from the MRZ along with some metainformation

Looks like the image that you are using returns None. In line 2 when you call the to_dict() on None, it throws the exception 'NoneType' object has no attribute 'to_dict'

This can be fixed as follows

Source https://stackoverflow.com/questions/67836794

QUESTION

How to change buffer size for spidev on raspberry pi

Asked 2021-May-31 at 20:10

I'm trying to transfer image data from a camera to the raspberry pi over SPI using the spidev interface. The maximum buffer size possible is 4096, I need about 200,000. This suggested:

...

ANSWER

Answered 2021-May-31 at 20:10

From this:

add spidev.bufsiz=xxxx to /boot/cmdline.txt and remember to keep everything on one line.

Source https://stackoverflow.com/questions/67746494

QUESTION

Raspi4 WIFI-Access-Point Full-Tunnel directly into Wireguard

Asked 2021-May-31 at 14:56

I run a working Wireguard server with 2 Wireguard Gateways for Site-to-Site VPN and a couple of Mobile Devices with a Full Tunnel that are used occasionally. One of my Site Gateways is a RaspberryPi4 that I want to provide a WIFI-Access-Point that directly tunnels to the Wireguard Server. This RaspberryPi has working access to all connected subnets via the main Server, so Wireguard is setup properly.

I want to use my Raspi4 to roam the world and provide me a WIFI-Access-Point while any device that connects to it is directly routed into Wireguard and emerges to the web only from there. I used the standard gateway setup provided and my WIFI device can access the web but doesn't tunnel through Wireguard (yet).

I can't really find where I can configure where the access point is bound to, dnsmasq, apdconf or a simply iptables rule?

Example IPs

Server: 10.0.7.1, local network 192.168.0.1/24

Raspi4: 10.0.7.5, local network 192.168.6.5/24, WIFI 192.168.7.5/24

So far I haven't succeeded, ideas?

...

ANSWER

Answered 2021-May-31 at 14:56

Got it to work, took a few steps.

First I changed the Wireguard-tunnel on the RP4 to be a full tunnel, it was previously a split-tunnel, only routing the IPs of the other local LANs into the wg0 interface.

Working Full Tunnel:

Source https://stackoverflow.com/questions/67765893

QUESTION

Do I need my own bsp layer and what should be placed there?

Asked 2021-May-22 at 10:13

I know that this might not be the best place to ask questions I wanted to ask but frankly even though I've browsed through a lot of resources I haven't found satisfying answers. I've been trying to learn how to use Yocto and therefore I've got some questions. (Btw if you know a better place to ask them please just let me know in a comment so I could the question there and remove this one, in order to not mess too much).

In Embedded-Linux-Development-Using-Yocto-Project-Cookbook I've found that the good practice is to create my own bsp layer. Is it true in the case when my new-custom-bsp layer would be depending on e.g. meta-raspberrypi? So the meta-raspberrypi would be like a base for my bsp layer?
Why should I define my own images?
What should be placed in bsp layer? Linux kernel version? Uboot configuration? Device tree? What if I have my own kernel modules? Should I put them in bsp layer? What if I have modules that handle not the hardware on the board itself but rather hardware that can be plugged in the board? Wouldn't be better to put them into my-custom-distro layer?
As for my my-custom-distro - what should be placed in this kind of layer? Running services? Loading drivers? User configuration?

...

ANSWER

Answered 2021-May-22 at 10:13

Is it true in the case when my new-custom-bsp layer would be depending on e.g. meta-raspberrypi? So the meta-raspberrypi would be like a base for my bsp layer?

Yes. Yes.

Why should I define my own images?

Don't you want to control what is part of the image? You can use existing provided by the BSP layer if there are any otherwise.

What should be placed in bsp layer? Linux kernel version? Uboot configuration? Device tree? What if I have my own kernel modules?

As for my my-custom-distro - what should be placed in this kind of layer? Running services? Loading drivers? User configuration?

Whatever is needed to make it work on existing platform/board, so anything and/or everything from the above.

Source https://stackoverflow.com/questions/67647921

QUESTION

Kubernetes CrashLoopBackOff

Asked 2021-May-21 at 06:45

I got error when creating deployment. This is my Dockerfile that i have run and test it on local, i also push it to DockerHub

...

ANSWER

Answered 2021-May-21 at 06:45

You are trying to launch a container built for x86 (or x86_64, same difference) on an ARM machine. This does not work. Containers for ARM must be built specifically for ARM and contain ARM executables. While major projects are slowly adding ARM support to their builds, most random images you find on Docker Hub or whatever will not work on ARM.

Source https://stackoverflow.com/questions/67630970

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install raspberrypi

You can download it from GitHub.
You can use raspberrypi like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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