How to print float value with sprintf in TrueStudio and H7?

[Gerardo Trotta]

This :

double num= 10.85

int written = sprintf(num_buf, "%1.17g", num);

works in F4 using -u _printf_float into linker commands settings.

But does not work in H7.

Any suggestions?

[Piranha]

The pow() function is slow, big and doesn't guaranty exact integer result. A simple loop with integer multiplication is much faster and takes less code.

[Singh.Harjit]

​I've been using this: https://github.com/mpaland/printf for my printf needs.

[Piranha]

This one looks really nice!

[Gerardo Trotta]

Very nice, will try on my H7