[FEATURE] biniry protocols

[ilia19911]

Is your feature request related to a problem? Please describe.

Hi. I have a general question about binary protocols. I often run into the same problems when implementing them on embedded boards (UART, Ethernet, custom transports). Each time I end up writing a parser for something like [prefix][length][data][crc]. To avoid repeating this, I created a reusable template-based library with tests. It supports configurable field sequences and streaming parsing (both full and partial packets). You can find it here: https://github.com/iahve-space/protolib . Could this be useful as a reference or solution for others, and potentially as an example in NuttX apps?

Describe the solution you'd like

Could this be useful as a reference or solution for others, and potentially as an example in NuttX apps?

Describe alternatives you've considered

No response

Verification

• I have verified before submitting the report.

[acassis]

Hi @ilia19911 yes I think this is a great idea!!!
You could integrated it into nuttx-apps downloading your project in building time (like LVGL and others). Maybe creating an examples/protolib/ directory, not sure what is the best place to include it.

BTW, in a quick look at your code I noticed it is not too much dependent on C++, so maybe you can consider a lean implementation in C to reduce the final size. Last time I tested a simple hello world with C++ on NuttX it was increasing the final size in more than 100KB (even with disabling exceptions, RTTI, etc)

I suggest you to test first just integrating it as it is. Then you will have a notion if it makes sense or not to convert the code to C :-)

[ilia19911]

Hi @acassis , oh yes, I found out, after my question, that cpp is a bad idea for nuttx for some reasons, compatibility, size and etc. Yes, I agree, the best decision is to create some version of template protocol for C, but it's difficult , cause there are to many features based on template. Might be I will try letter, nuttx so cool and it's kind of honer for me to be contributor with you. And thank your appreciation of my idea

[acassis]

@ilia19911 Thank you for you kind words! Yes, NuttX is really cool, I worked many years with uClinux, but NuttX is what I was expecting uClinux to be. It is very sad that Linux Foundation promotes other RTOS, because NuttX is much more Linux-like. BTW, I think you can try to integrate it, it will be a learning experience.