ndless os config

→ **MyCalcs** profile · by **parisse** » 29 May 2020, 12:41

Is there any way to access to the nspire OS configuration? For example, language, unit angle, ...

My calculator programs · by **Adriweb** » 29 May 2020, 17:21

The problem can (should?) be put the other way around, especially in your case where it's via a lua module.
What I mean is, TI already provides all these APIs to get (and set, in some cases) settings/config of a document, from Nspire Lua.

So, it would be easy to just call your own C function of your module that "receives" the lua value corresponding to what you want.

For instance you can look at math.getEvalSettings() (Returns a table of tables with the document settings that are currently being used by math.eval. These settings are equivalent to the current document settings unless a call has been made to setEvalSettings). Cf the page https://wiki.inspired-lua.org/math.setEvalSettings that has more info too.
For the language, there is locale.name()

→ **MyCalcs** profile · by **parisse** » 29 May 2020, 19:02

Adrien, the "new" KhiCAS UI (ported from the Numworks UI) does not use lua anymore : the idea is to have the same codebase for several calculator brands (with a few ifdef of course), at least for the Numworks and the TI.
That's why it would be nice to get the language from a C call, otherwise I will have to ask the user English or French when he run KhiCAS for the first time, or set it to French and leave the user press ctrl s and select English (current behavior).

My calculator programs · by **Adriweb** » 29 May 2020, 19:16

OK, if not from a Lua module anymore (I thought for graphics etc. you just "drew on screen" with a backup buffer etc.), then the Lua stuff doesn't apply of course

And it's more complicated now. The ndless sdk would have to impement that in an os-specific way, which isn't done right now afaik. No syscalls for it I think.
I'll let Vogtinator know about this topic.

Edit: getLangInfo() and getMode() from Basic would work -> https://www.manualslib.com/manual/37632 ... =48#manual ... if that's callable from ndless ?

→ **MyCalcs** profile · by **Vogtinator** » 29 May 2020, 20:12

You could parse /phoenix/syst/settings/current.zip yourself, that's where the settings are stored (AFAICT).
It might be enough to use some undocumented syscalls to poke the calc engine, though I don't know how well that works and it might break in the future when the OS changes ABI.

Code: Select all: #include <os.h> #include <syscall.h> ... char16_t input_w[] = u"nsolve(x-42=0,x)"; void *math_expr = nullptr; int str_offset = 0; int error = TI_MS_evaluateExpr_ACBER(NULL, NULL, (const uint16_t*)input_w, &math_expr, &str_offset); if(error) return 0; char16_t *output_w; error = TI_MS_MathExprToStr(math_expr, NULL, (uint16_t**)&output_w); syscall<e_free, void>(math_expr); // Should be TI_MS_DeleteMathExpr if(error) return 0; // Do something with output_w, it's u"42." here syscall<e_free, void>(output_w);