sorry, my fault -- forgot to rebuild the whole project. Everything works fine with enabled FPU (-mthumb -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard)
On Wed, 15 May 2019 at 17:06, Ярослав Лещинский <midniwal...@gmail.com> wrote: > if change to CPU_CFLAGS = -mthumb -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 > -mfloat-abi=softfp, application not responded at all. > > > > On Wed, 15 May 2019 at 16:45, Ярослав Лещинский <midniwal...@gmail.com> > wrote: > >> yes, I know, I just checked that behavior is the same as before. >> >> With these flags -mthumb -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 >> -mfloat-abi=hard >> >> I got error from linker: >> >> /home/midnight/rtems/toolchain/5/lib/gcc/arm-rtems5/7.4.1/../../../../arm-rtems5/bin/ld: >> error: o-optimize/test.exe uses VFP register arguments, / >> home/midnight/workspace/rtems/build/arm-rtems5/stm32l4/lib/librtemsbsp.a(bspfatal-default.o) >> does not >> /home/midnight/rtems/toolchain/5/lib/gcc/arm-rtems5/7.4.1/../../../../arm-rtems5/bin/ld: >> failed to merge target specific data of file /home/midnig >> >> ht/workspace/rtems/build/arm-rtems5/stm32l4/lib/librtemsbsp.a(bspfatal-default.o) >> >> Currently I'm trying to figure out what is a problem. >> >> On Wed, 15 May 2019 at 16:33, Sebastian Huber < >> sebastian.hu...@embedded-brains.de> wrote: >> >>> On 15/05/2019 15:31, Ярослав Лещинский wrote: >>> > problem solved after edition of CPU_FLAGS as mentioned in stm32f4.cfg: >>> > >>> > CPU_FLAGS = -mthumb -mcpu=cortex-m4 >>> >>> If you use these flags, then you don't use the floating point >>> instructions. >>> >>> -- >>> Sebastian Huber, embedded brains GmbH >>> >>> Address : Dornierstr. 4, D-82178 Puchheim, Germany >>> Phone : +49 89 189 47 41-16 >>> Fax : +49 89 189 47 41-09 >>> E-Mail : sebastian.hu...@embedded-brains.de >>> PGP : Public key available on request. >>> >>> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. >>> >>> >> >> -- >> -- >> Kind regards, >> *Yaroslav Leshchinsky* >> > > > -- > -- > Kind regards, > *Yaroslav Leshchinsky* > -- -- Kind regards, *Yaroslav Leshchinsky*
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