ch_set_frequency is inconsistent

[vmanoj1996]

ch_set_frequency function sets different frequencies everytime even when its arguments didnot change.

verified the same frequency using ch_get_frequency

[mhkline]

Hi @vmanoj1996. Can you tell us what the variation in the set frequency is?

Some variation is expected. There are a couple reasons for this:

1. The on-chip digitally controlled oscillator has a finite step size. This is on the order of a few hundred Hz.
2. When you set the frequency, the ICU chip runs a frequency search routine to find the closest frequency step to the frequency you specified.
3. The frequency of the on-chip DCO may be re-measured when changing the operating frequency.

[vmanoj1996]

I was getting really different numbers. The fluctuation was between ~52KHz to ~100kHz.
But I also found that some wires are loose. Lemme fix that for good and try again.

[mhkline]

Ah ok. Yes, that's way too much. I would expect no more than a few hundred Hz. Which part are you using? 30201?

[vmanoj1996]

Yep. I am using 30201.