Hi Domi,
I have been using srsLTE for about 5 years now, and
about 3 years ago
physical USIM support was added to it.
Did you really mean srsLTE as in network side, or did you mean srsUE
for LTE UE side? The latter seems to make a lot more sense for USIM
support.
Naturally it is a very thin layer, pretty much only
supporting requesting
3G AUTH vectors from the card,
I would think that an LTE UE implementation would need to read at
least the IMSI from the card, so it knows how to present itself to the
network, and probably some other important files.
however it is written in C or C++ (I can't
remember right now which).
Maybe it is useful for you :).
My fc-simtool and fc-uicc-tool are now pretty mature (they do what I
need right now, and future functionality growth will be just adding
higher-level operation commands on top of my already working
foundation), so I have no need for other people's code (almost
certainly with different coding style and philosophy) from random
sources.
M~