Syscalls

Syscalls are OS functions exposed by Ndless to C and assembly programs. This article describes the syscalls currently available with Ndless 1.7.

Your help is needed to make this list grow to a full-fledged library. Try to find new syscalls, test them and share them for integration in Ndless.

Functions marked with (*) are available only if the program is linked against Newlib, i.e. when the nspire-ld switch -nostdlib is not used.

C standard library

stdarg.h

• va_list
• va_start
• va_arg
• va_end

stdio.h

• fclose
• fopen
• fread
• fwrite
• puts
• printf
• sprintf
• vsprintf

stdlib.h

• exit (*)
• free
• malloc

string.h

• memcpy
• memcmp
• memset
• strlen
• strncat
• strcmp
• strcpy
• strrchr

C POSIX library

sys/stat.h

• mkdir
• stat

Nucleus

TODO: Document these functions

• NU_Local_Control_Interrupts
• NU_Get_First
• NU_Get_Next
• NU_Done

TI-Nspire GUI

• void ascii2utf16(void *buf, const char *str, int max_size): converts the ASCII string str to the UTF-8 string buf of size max_size.
• void show_dialog_box2(int winid, const char *utf8_title, const char *utf8_msg): displays a dialog box of title utf8_title containing utf8_msg. utf8_title and utf8_msg are C strings converted with ascii2utf16(). winid must be 0.