New project on old board

[MichaelR]

Hello

I am using board NUCLEO-G071RB

I wrote for it a code, and all worked well.

Now I want to rewrite a new project for the same board, but elementary functions such as PWM output doesn't work. If I run again the old project all works OK again.

Someone have any idea why this occurs?

[MichaelR]

I found out my mistake, I started the PWM before initialyzing the peripherials