sprintf from psoc creator 2.2 to psoc creator 4.0

[GUPA_1336776]

Hello,

       

I work from a project from psoc creator 2.2 with cypress kit-014 and i try to build it with new psoc creator 4.0 and cypress kit-059

   

with my new custom board.

   

How modify my project to work correctly with sprintf ?

   

sprintf doesn't work.

   

        // Calcul de la température en °Celcius
        Tx = ( Nx * q ) / 0.01 - 273.15;

   

        // Affichage du nombre Nx
        CharLCD_Position(3,0);
        CharLCD_PrintString("Nx =   ");
        CharLCD_PrintNumber(Nx);
        
        // Affichage de la température
        // avec le caractère spécial °
        CharLCD_Position(2,0);
        CharLCD_PrintString("T  = ");    
        sprintf(tstr,"%+9.4f",Tx);        
        CharLCD_PrintString(tstr);

       

Thank you for the help.

       

Patrick Guérangé

   

Teacher

   

France

[rola_264706]

Do you have this #include <stdio.h> at the start of the main.c ? Post you code so we can check it.

[rola_264706]

Here is the manual on printf.

[Bob_Marlowe · Accepted solution]

Welcome in the forum.

   

When using sprintf()

   

Set "use newlib nano"

   

set "Use newlib nano float formatting" in Build Settings -> Linker

   

ans increase heap size to 0x0200 in system view.

       

Happy coding

   

Bob

[GUPA_1336776]

Hello,

       

It is ok with Bob information and before with cypress support.

   

Thank's.

   

Patrick