TWR-K21F120M float Data types

[黃佑煊]

Dear sir, I have a TWR-K21F120M

But, when I want to use floating-point operations, there will be an error

Thank you very much ~~

[ivadorazinova]

Hello 佑煊 黃,

Please, check settings in KDS.

these documents could help you solve your problem:

Printing Floating point values to fsl_debug_console FRDM-K64F

and printf() with float values

I hope it helps,

Best Regards,

Iva

[黃佑煊]

Dear sir,

Sorry! I do not understand how to set this.

Thank you very much ~~

[ivadorazinova]

Dear 佑煊 黃,

Never mind. Please, try do it by this way:

Change std_prv.h to following:

#ifndef STD_FP_IO		//DES added #ifndef
#define STD_FP_IO 0

#endif

and change the value in Preprocessor STD_FP_IO = 1

Best Regards,

Iva

[黃佑煊]

Dear sir,

I can not find the preprocessor options

[Alice_Yang]

Hi 佑煊，

Do you use CW10.6 ?

In you screenshot , where show the float error ?

And about the float configuration on CodeWarrior, you can select on here :

And i have test on my side (mk21fn1m0 - CW10.6), when define like your code (float tt; tt = 2.0f),  it can work well.

So could you show detail the float error .

Best Regards,

Alice

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