Hi everyone,


i'm working on a project that organize my mathematical formula.[/size]Therfor i have to print text on screen.
[/size]If i use nspireIO like the example shows everything works
[/size]console c;

c << "Print Text" << endl;
return 0;

But if i try to use the functions in "nspireio.h", i get the message:
Screen.cpp:(.text+0x64): undefined reference to `nio_fprintf(...)
I'm using "ndless-v3.1-beta-r914-sdk" to build the code. The "libnspireio.a" is located in the .../ndless/lib folder
My code: part of header-file

#include <os.h>
#include <nspireio/console.hpp>
#include <nspireio/uart.hpp>
#include <nspireio/nspireio.h>
#include <string.h>



class Screen
{
private:
    static bool instanceFlag;
    static Screen *screen;


    Screen() { //private constructor
}


//Member Var
nio_console c;


public:
    static Screen* getInstance();


    ~Screen()
    {
        instanceFlag = false;
    }


//Member Func
void print(char *cString);
        //...

part of cpp:

void Screen::print(char *cString)
{
nio_fprintf(&c, cString);
}

I would like to read single chars from keyboard. After one char has been tipped a searchList() function will search for matches and display them. Next received char will be added to the first one and search,display repeat...
Does anyone knows how to solve the undefined reference problem?
Thanks

I don't know if you still need this, but can't you use something like this?



char choice[1];
nio_printf(csl, "> ");         // wait for input
nio_fgets(choice,3,csl);      // store input in choice[]
return (int)choice[0];      // return choice


If it doesn't help you, maybe it helps others 

 
However it doesn't accept buttons like the keypad, etc. only printable chars
If you set it to unsigned char, you may be able to use the second part of the ascii table, but i haven't tested it


~virus