General Ndless Questions and Support

[Levhitor]

Hello 0/
I Just got a new Nspire.
Its in the 3.0.2 OS, the problem is that now matter what i do the software manager will only let me upgrade to 3.2 and ignores 3.1.
What should i do?

[TheNlightenedOne]

Levhitor, try to find a 3.1 download, and put it on your desktop. Open the TI-Nspire software and go to the file transfer page thing. Connect your Nspire and drag the installation file from your desktop to your Nspire.

[Levhitor]

Already did it.
Downloaded it from http://tiplanet.org/
It seems the 3.2 installation left some Reg files or something to block it too...
At worst i think i will try tomorrow on another PC.

[aeTIos]

As of now there is no ndless version for os 3.2

[Levhitor]

Im talking about the Student Software not the Nspire.
I Cant update to 3.1 in other computer neither.

My NSPIRE CX is in 3.0.2 when i try to update it wont let me.
"its wrong device" if i put the route of the 3.1 OS if not it wont even appear, only 3.2

What can i do :I

[Lionel Debroux]

If you're transferring a 3.1 CX OS (with .tco extension) to your CX calculator, and it won't let you do so, uh... try to make a backup of the documents you created (if any), then go to the maintenance menu (you'll find the shortcut posted somewhere around) and use the option to completely reformat the calculator, and then proceed again to transfer the 3.1 OS

If that still doesn't work, well, I think that the next best thing you can do is to leave it at 3.0.2.1791.
3.2 has terrible speed regressions, some math functionality is still broken, and some of the new functionality that was added is certainly broken (and can break stuff at other places): TI has both a habit of creating bugs when they touch the code base (so who knows what they broke this time), and a habit of having inadequate validation procedures (we know this because for a while, multiple severe bugs have been found in the very few days after the public release)...

[Levhitor]

I Fear that if i do that after formating it will force me to update to 3.2...
"3.0.2.1793" dosnt haves anyproblems ammirite...?

What could it be :I

[Lionel Debroux]

I Fear that if i do that after formating it will force me to update to 3.2...

No reason why it should
Have you tried transferring 3.0.2.1793 anew, just to check you can ?

"3.0.2.1793" dosnt haves anyproblems ammirite...?

It has at least two known major problems:
* like all OS 3.x versions, it has math bugs that OS 2.x versions do not have;
* it sets an anti-downgrade protection to forbid transferring the 3.0.1.1753 OS, and any earlier OS; to get a chance of removing that anti-downgrade crap, you need to transfer OS 3.1.0.392 and Ndless 3.1.

[ExtendeD]

The fgets function seems to have a glitch:

Code: Select All | Copy To Clipboard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

char *fgets(char *str, int num, FILE *str2eam) { char *str2 = str; while (num--) { char c = fgetc(str2eam); //THIS IS THE BUGGY LINE if (c == EOF) { *str2 = '\0'; return NULL; } *str2++ = c; if (c == '\n') break; } *str2 = '\0'; return str; }

The c variable should be specified as an int, not a char -- it looks like the compiler treated the char as unsigned and optimized out the return NULL entirely! Plus, it is possible that an 0xFF character exists in the file, so signed char is not the way to go.

It's fixed in r643, thank you calc84maniac and hoffa, my apologies for this one: http://www.unsads.com/projects/nsptools/downloader/download/release/1

[calc84maniac]

I just found another problem with fgets. Here's the description of the return value:

On success, the function returns the same str parameter.
If the End-of-File is encountered and no characters have been read, the contents of str remain unchanged and a null pointer is returned.
If an error occurs, a null pointer is returned.

The fgets code currently returns NULL even if characters have been read and an EOF is reached. In addition, in the case that fgets reaches EOF at the first character, a null terminator is written even though the string must remain untouched.

Here's one way to fix it:

Code: Select All | Copy To Clipboard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

char *fgets(char *str, int num, FILE *str2eam) { char *str2 = str; while (num--) { int c = fgetc(str2eam); if (c == EOF) { if (str2 != str) break; return NULL; } *str2++ = c; if (c == '\n') break; } *str2 = '\0'; return str; }

Edit: You know, I should probably download the latest revision of Ndless before I critique code. Some issues have been solved, but the returning NULL upon any time EOF is reached is still wrong.

[ExtendeD]

r643 was fixing part of this but not all, thanks. Pushed to the SVN HEAD.

[SpiroH]

I've downloaded the latest release (r643) from the svn head. However, the 'Changes.txt' file dates back to 2012/01/19.
Is there a more up-to-date changelog?

[Lionel Debroux]

You can just use the SVN log

[Matrefeytontias]

Bump

I'm programming in C with Ndless and wondered if there was a list of available functions or Syscalls ..? Like a mini-tutorial about the specific stuffs of Ndless

[Jim Bauwens]

Yup.
libndls, the Nspire specific C library: http://hackspire.unsads.com/wiki/index.php/Libndls
The standard C functions that are included: http://hackspire.unsads.com/wiki/index.php/Syscalls

For graphics you can use nSDL or nRGBlib. nRGBlib might be the easiest to use.