Hi guys, I see that many node developers calls Python from Node-Red. But JavaScript has the possibilities to call C++ functions directly. Some parts of JavaScript are written in C++. This has advantages and disadvantages for node developer. But if you familiar with C++, this make easy to write …

For an example you could just show how to write a node that returns the current time, for example, where the time itself is provided via C++. But you say already have nodes that call C++, so you could just show one of those.

Hi Colin, thanks for suggestion. This was my plan in next level. Ok I start with easy examples.

Hi @iiot2k , Very interesting. Looking forward to read your instructions!! Have been experimenting recently to draw lines and (filled) polygons on images from my IP cams. But using Javascript this was horrible slow. So at the end I gave up. But I assume c++ is much faster for such use cases, si…

I started writing the instruction document. But it takes little time. If finished. I give the link.

Many thanks for contributing to the community.

Hi, I see that other Node-Red user don't give suggestions for examples. Therefore I select for hardware max7219 led driver example in C++ with call from Node-Red. Later we can use the C++ interface of SQLite for using with Node-Red.

[image] iiot2k: I select for hardware max7219 led driver The problem with that is that very few, if any, here will be able to try it out, as we don't have the hardware.

Hi Colin, this is an very cheap module and anywhere aviable. You can connect modules in series for more digits. The interface is spi. [max7219] But if this module not easy to get, we can select an other hardware.

[image] iiot2k: we can select an other hardware. To show the principle of interfacing node-red with C++ a non-hardware problem would be better. Something that can be installed and tested on any node-red system. Even just a Hello World example where the text is generated in C++. The importa…

[image] iiot2k: other hardware I agree with Colin that the better option would not start with a hardware project since by no means everyone using Node-RED uses it with IoT hardware. However, having said that, better to have an example than no example.

Node-RED

Node-RED Forum

Call C++ from Node-Red, suggestion for examples ? :)

Developing Nodes

iiot2k 27 August 2022 07:45 18

3 Likes

Topic		Replies	Views
Call C++ from Node.js (Node-Red), A tutorial Developing Nodes	1	481	25 October 2022
Help with creating a new node with c++ Developing Nodes	4	718	28 April 2021
Can I use c++ in node red? General	13	6946	7 October 2019
Call C++ from Node-Red (Node.js) Developing Nodes native , cpp , binary , interface , node-api	7	469	15 October 2024
C++ standalone backend application & Node-red - Best Architecture Developing Nodes	11	898	20 March 2022

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Call C++ from Node-Red, suggestion for examples ? :)

Related topics