[En-Nut-Discussion] Vortex M3/M4 and floating point

[Uwe Bonnes]

Hello,

what needs to be done to get floating point working on Cortex. I have

#define STDIO_FLOATING_POINT

in cfg/crt.h

and recompiled and reinstalled the library and recompiled the application.

double f_a = 2.01
printf("a %3.6f\n", a);

hangs while printing and

double  f_az
uint16_t  az

   az = (int16_t)(data[5]<< 8 | data[4]);
   f_az = (double)az;
   printf("f_az %3.6f\n", f_az);

prints 0.000000

Toolchain is latest yagarto. Yagarto uses the softfloat abi.

Thanks
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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