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Float value gives hard fault in STMCubeIDE

NOza.1
Associate II

‎2020-06-18 12:42 PM

Hi,

I am using a STM32F4/STM32L4 MCU and STMCube IDE (1.3.0) for the development. It gives ma a hard fault when I print float values.

float value = 3.14f;
printf("Value: %f\r\n", value);

I have enable -u _printf_float as mentioned in attached image. Will you please help me to resolve the issue?

0693W000001r1wzQAA.png

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3 REPLIES 3
TDK
Guru

‎2020-06-18 01:35 PM

So you can use floats, but the hard fault occurs when using printf with floats?

printf uses malloc, might be malloc failing.

Where is your printf sending data?

If you feel a post has answered your question, please click "Accept as Solution".
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NOza.1
Associate II

‎2020-06-18 01:38 PM

Que: So you can use floats, but the hard fault occurs when using printf with floats?

Ans: Correct.

Que: Where is your printf sending data?

Ans: UART

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