Floating point issue on Raspberry PI

[robu]

Hi,

It's the same effect I'm getting just 0.000

Regards,
Robert

[gmb42]

Are you sure the object file for chprintf got recompiled? Did you "make clean"? I tripped over that when I was trying to get fp output last week.

[robu]

If I don't set the CHPRINTF_USE_FLOAT flag than insted of the number it will print out only a f

[gmb42]

OK, I'm out of advice now, it works for me on an STM32F4.

[robu]

Thanks for your help.

[mabl]

Wasn't there once an issue with varargs and floating point? Which also never got solved and the "toolchain" got the blame? I'd wager this is the same case.

What is the status of the raspberry Pi Port? I guess it needs a recommended toolchain and working debugging. OpenOCD should support it, right?

[Badger]

Wasn't there once an issue with varargs and floating point? Which also never got solved and the "toolchain" got the blame? I'd wager this is the same case

I've experienced the same issues with STM32. I never found the time to get to the bottom of it, I just printed a scaled integer instead. There's some more info here.

[robu]

Thanks for the help, I will give a try.

[robu]

Hi,

Finally I figure it out the problem.

There was the stack initialization problem, I added

Code: Select all

mov sp,#0x8000

to the vector.s and now it is working

Robert