SyntaxError: decimal numbers not supported

[synapticonashaikh]

Hello, I'm working on a project in which I'm using the sample code of the micropython minimal project (I'm using the STM32F446xx board).
I've redefined the standard libraries to be able to work for my board. Currently, I can generate the minimal binary file (it is working fine). As the sample project is bare minimal, it does not support the floating point operation. Hence, I can't use any floating point operations. I would like to know how I could use the floating point operation. If anyone has done that before, please help me with some guidance.

[dlech]

You will need to change to MICROPY_FLOAT_IMPL.

#define MICROPY_FLOAT_IMPL                      (MICROPY_FLOAT_IMPL_FLOAT)

And make sure -mfpu=fpv4-sp-d16 -mfloat-abi=hard is added to CFLAGS somewhere in the Makefile.

[dlech]

Now you need to add the libm source files to the build.

SRC_LIB += $(addprefix lib/,\
        libm/math.c \
        libm/fmodf.c \
        libm/nearbyintf.c \
        libm/ef_sqrt.c \
        libm/kf_rem_pio2.c \
        libm/kf_sin.c \
        libm/kf_cos.c \
        libm/kf_tan.c \
        libm/ef_rem_pio2.c \
        libm/sf_sin.c \
        libm/sf_cos.c \
        libm/sf_tan.c \
        libm/sf_frexp.c \
        libm/sf_modf.c \
        libm/sf_ldexp.c \
        libm/asinfacosf.c \
        libm/acoshf.c \
        libm/asinhf.c \
        libm/atanf.c \
        libm/atan2f.c \
        libm/atanhf.c \
        libm/log1pf.c \
        libm/sf_erf.c \
        libm/erf_lgamma.c \
        libm/wf_lgamma.c \
        libm/wf_tgamma.c \
        libm/roundf.c \
	)

[synapticonashaikh]

Hello, I added the libm source files to the build (as you mentioned).
And then I add the object of it to the final build!

LIBM_O = $(addprefix $(BUILD)/, $(SRC_LIB:.c=.o))
OBJ += $(LIBM_O)

Now the code is compiling without any errors! But after every equation, the interpreter is getting hanged/frozen. It is getting hanged on all commands (even simple print("hello")).

Makefile.txt

[dlech]

Does "hello world" start working again if you disable MICROPY_FLOAT_IMPL?

[synapticonashaikh]

I commented the #CFLAGS += -DMICROPY_FLOAT_IMPL=MICROPY_FLOAT_IMPL_FLOAT, but still, the interpreter is getting frozen (after entering any command) like earlier.

[synapticonashaikh]

Hello, thanks for all the support! I'm able to perform the floating point operation now! I did the step-by-step debugging and found that somehow -mfloat-abi=hard is creating an issue. I replaced it with the previous definition, -mfloat-abi=solft, and it is working now.

Makefile.txt