rtl-sdr | A modern Node.js wrapper around the librtlsdr library | Runtime Evironment library

by watson C++ Version: 0.1.4 License: MIT

X-Ray Key Features Code Snippets(3)Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | rtl-sdr Summary

rtl-sdr is a C++ library typically used in Server, Runtime Evironment, Nodejs, NPM applications. rtl-sdr has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A modern Node.js wrapper around the librtlsdr library

Support

Quality

Security

License

Reuse

Support

rtl-sdr has a low active ecosystem.

It has 63 star(s) with 10 fork(s). There are 6 watchers for this library.

It had no major release in the last 12 months.

There are 3 open issues and 0 have been closed. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of rtl-sdr is 0.1.4

Quality

rtl-sdr has 0 bugs and 0 code smells.

Security

rtl-sdr has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

rtl-sdr code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

rtl-sdr is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

rtl-sdr releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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rtl-sdr Key Features

No Key Features are available at this moment for rtl-sdr.

rtl-sdr Examples and Code Snippets

rtl-sdr,Usage

C++

Lines of Code : 11

License : Permissive (MIT)

Copy

const rtlsdr = require('rtl-sdr')

// Get number of connected RTLSDR devices
const deviceCount = rtlsdr.get_device_count()

if (!deviceCount) {
  console.log('No supported RTLSDR devices found')
  process.exit(1)
}

console.log('Found %d device(s):',

rtl-sdr,Prerequisites

C++

Lines of Code : 2

License : Permissive (MIT)

Copy

brew install librtlsdr

apt-get install librtlsdr-dev

rtl-sdr,Installation

C++

Lines of Code : 1

License : Permissive (MIT)

Copy

npm install rtl-sdr --save

Community Discussions

Trending Discussions on rtl-sdr

Trouble piping to curl through sed

ubuntu - GNU-RADIO - cmake could not find MPIR

gnuradio: Is there a way to change GUI chooser labels/values at run-time?

MSI SDR device sample code does not compile

RTL2832U: Building a FM Receiver with GNC on Windows

QUESTION

Trouble piping to curl through sed

Asked 2022-Feb-16 at 23:00

I have a program, rtl_433, that outputs lines of JSON - maybe once or twice a minute, while it's running. I need to pipe that data as HTTP POST data to curl.

What complicates matters is that this string needs to be encapsulated in single quotes, which they're not, so I need to add that before shipping it to curl.

Now, here's the thing: This works just fine:

...

ANSWER

Answered 2022-Feb-16 at 08:42

The problem here is that rtl_433 never exits, it just keeps printing lines for every message it receives.

This is a problem because curl is going to wait until it receives an EOF (end of file) marker to know when it has received all payload it needs to send to in the HTTP request, but of course it never gets this. The EOF would be automatically added when rtl_433 exited.

Your best bet is probable to move from a one line script to a proper bash command reads from rtl_433 a line at a time and then runs sed on that line before passing it to curl.

e.g.

Source https://stackoverflow.com/questions/71138400

QUESTION

ubuntu - GNU-RADIO - cmake could not find MPIR

Asked 2021-May-28 at 11:14

I'm trying to get a RTL-SDR source block (or osmo sdr, since they both work) in GNU Radio, and it apparently must be obtained via the following command lines:

...

ANSWER

Answered 2021-May-28 at 11:14

Okay I got it!

This guy goes over the required libraries

https://www.youtube.com/watch?v=2IWtEkAHXFI

I was missing swig, and afterwards I was also missing liborc-0.4-dev

They can be installed via:

Source https://stackoverflow.com/questions/67607752

QUESTION

gnuradio: Is there a way to change GUI chooser labels/values at run-time?

Asked 2021-Jan-09 at 21:30

I'm trying to make an FM radio that would search for radio stations automatically and then let the user choose a station using an rtl-sdr. I wanted to use a QT GUI Chooser block to show the found channels, however now I don't think this would work, I did a few tests and then noticed the parameters for list values and labels are not underlined (which I understand means run-time adjustable). Is there a way to make this work or anything else I could use?

I'm using gnuradio 3.8.1 .

...

ANSWER

Answered 2021-Jan-09 at 21:30

Labels for Qt GUI Chooser are not exposed to modifications at run-time. However, Gnuradio companion flowgraph generates a python script with Qt application. These Qt parameters are accessible from the top_class top_block_cls().

Assuming a simple flowgraph with only 'QT GUI Chooser', you can add a 'Python Snippet' block to populate the GUI chooser. For instance, insert:

Source https://stackoverflow.com/questions/65584089

QUESTION

MSI SDR device sample code does not compile

Asked 2020-Jun-04 at 09:25

I am trying to interface with an MSI SDR dongle, using an android app

This device is a clone of the SDRPlay SDR device, and is compatible with it's software and drivers

I am trying to interface with this using an OTG cable and android phone

The android drivers for this can be downloaded from here https://www.sdrplay.com/downloads/

It is in the Android tab under the API/HW – V2.11 (15TH NOV 2017) link (https://www.sdrplay.com/anddl.php)

A possible sample code for this driver can be found here: https://www.sdrplay.com/docs/AndroidIntegrationNote.pdf

Before making the full android program it says the library (libmir_sdr_api.a) should be built into an .so library file using ndk-build

I currently have Android's hello-jni sample project from here: https://github.com/android/ndk-samples/tree/android-mk/hello-jni

I have replaced the jni folder using the Android.mk file, libmir_sdr_api.a, mir_sdr.h, initialization-jni.cpp, demod-jni.cpp and demod-jni.h files mentioned in section 3 of the AndroidIntegrationNote.pdf file I linked above

When I execute ndk-build from the hello-jni project folder, I get he following error:

...

ANSWER

Answered 2020-Jun-04 at 09:25

Regarding missing jni/initialisation-jni.cpp, you probably have the file jni/initialization-jni.cpp instead.

Also, unfortunately, the document is wrong. You can only use $(call my-dir) easily at the top of the file. Luckily, Android NDK adds the jni directory to includes path for you. Still, to be on the safe side, better write:

Source https://stackoverflow.com/questions/62175986

QUESTION

RTL2832U: Building a FM Receiver with GNC on Windows

Asked 2020-Apr-22 at 20:47

I have been using SDRSharp for quite some time, listening to various stations, and I wanted to divulge more into how I can create tools using GNURadio.

I downloaded GNURadio Companion 3.8.0.0 and ran through the first three lessons.

I was following lessons from the official GNURadio.Wiki using the said V3 RTL-SDR Dongle (RTL2832U R820T2 TCX0 + BIAST + HF)

I have encountered trouble when creating the FM receiver as per lessons. Due to my hardware being different than what the lesson used, I did make a few revisions to the parameters of the flow graph.

I used a sample rate of 2.4e6 (2.4 MS/s) which is the max stable sample rate of the said dongle
I used the RTL-SDR Source Block as opposed to the UHD Block
I set the stop frequency to 2e9 as this dongle will not go as high as 6GHz

After these changes, I assume all is set, and Generate/Execute the flow graph. I am greeted with the following error:

...

ANSWER

Answered 2020-Apr-22 at 19:57

To give you a better answer, please answer the following questions: - what OS are you using? - how did you load GNU Radio 3.8? - have you tried using pip3 and python3? Try running the procedures in https://wiki.gnuradio.org/index.php/ModuleNotFoundError

You say "I downloaded GNURadio Companion 3.8.0.0", but you didn't say your source for it. Did you build the flowgraph yourself with GNURadio Companion 3.8.0.0, or did you load the https://raw.githubusercontent.com/gnuradio/gr-tutorial/master/examples/tutorial6/gr-tutorial-broadcast-fm-rx.grc ? It was written for GR 3.7.

Try this: - terminate SDRSharp - eject your dongle - reboot your computer - connect the dongle - try it again

Source https://stackoverflow.com/questions/61369180

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

Vulnerabilities

No vulnerabilities reported

Install rtl-sdr

You can download it from GitHub.

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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