LimeADPD RTL?

[batman52]

The LimeMicrosystems page about LimeADPD ( https://limemicro.com/technology/limeadpd/ ) claims it is a fully open source solution, including the RTL implementation.

“Open source
Lime Microsystems fully open source solution for PA linearisation is based on adaptive digital pre-distortion (ADPD). The FPGA RTL and host software sources can be found on GitHub. For more in-depth technical details, please see the wiki page.”

However, looking at the github directory while FPGA bitstreams are available, I do not see any RTL code, and the project repository mainly contains .c/.cpp files. Do you intend to actually share the RTL code and comply with the open source statement? Otherwise I would suggest you should skip the “fully open source” claim from the web page.

[andrewback]

@batman52

Do you intend to actually share the RTL code and comply with the open source statement?

We already have:

myriadrf/ADPD_LimeSDR-QPCIe_USB3

You can load this in Quortus or use something like unqar to extract if you don’t have the vendor tools.

[batman52]

Ok, thank you for the reply, and sorry for my ignorance.
Is there a particular reason for not sharing directly the RTL code ?

Assuming I ‘unqar’ the code, am I allowed to share it in a different github repository, mentioning this project as the original source ?

[andrewback]

@batman52

Is there a particular reason for not sharing directly the RTL code ?

I think it was just convenient to package as a Quortus archive and you’ll need this to build it in any case. I’ll see if we can expand it, so that the project is browsable.

@batman52

Assuming I ‘unqar’ the code, am I allowed to share it in a different github repository, mentioning this project as the original source ?

The Lime Micro copyright sources are provided under Apache 2.0, as per the COPYING file in the repo root. As the README notes, this does not extend to files provided/generated by the tools.

[batman52]

OK thank you very much for your clear and efficient replies!