bare6-9
bare6: 2. I can't really follow where you get (250*10^-9) from, the frequency is right and from your osciloscope reading you get the output frequency. Your voltage is more than 4 V than our but I don't know if that's bad or not. 6. I'm not really sure but I think the voltage will differ but the frequency will stay the same because of the difference of the duty cycle. The peak to peak will decrease as nucleo alternate between positive and negative peaks.
bare7: Looks good.
Bare8:
- I don't think it is an overflow, more like it can't read from the buffer. We only got 2 letters so that's good for you.
- Great! We only got 1 letter so we will check your code to see what we did wrong.
Bare9: 2. You don't need to declare RESC and ERR on row 29-30. Nothing else to comment on, good job.