[alireza.r]

thanks for your replay bazis

but i have this problem with float variable too.
i readied this link before
http://visualgdb.com/tutorials/arm/stm32/fpu/

and i understood that this problem occre with double type but i just use float not double
and i have this problem.

[alireza.r]

thanks for your replay
but my problem is with hardware floating point. if i use software floating point the program run correctly
but when chose hardware floating point the hard fault occur.

Note that -mfloat-abi=hard has been added to GCC flags correctly

i use sprintf(..) and in Disassembly it is vcvt.f64.f32
how can i solved this problem.

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