How to output a float variable from uart?

There is a better forum for the starterware details to discuss. One might find few UARTprintf() related threads there as well:

http://e2e.ti.com/support/embedded/starterware/f/790/p/160340/593227.aspx

Thanks, I have seen the link, but it cannot solve my problem.

I have fell into this question. Can anyone help me?

Hi,

     Use ftoa(), then use UARTprintf().

-kel

It doesnot have the function ftoa() in C .

I am using the following way to echo the float variable:

    double zoomratio_y1 = 2047.0;
    memset(str_printf, '\0', sizeof(str_printf));
    sprintf(str_printf, "%f", zoomratio_y1);
    UARTprintf("zoomratio_y1=%s\n",str_printf);

but still cannot work.

Your printf support might be set to minimal. Somewhere in the CCS dialogs should allow you to set printf support to full.

ge shuihuan said:

It doesnot have the function ftoa() in C .

You have to make your own ftoa() for your use. Just copy from the internet.

-kel

I am confused why sprintf cannot work properly.

can you tell me ?

Project->Properties->Build->Compiler->Library Functions
Level of printf support rquires (--printf_support)
Select full