SI5351 without library #si5351

edoardo marchetti
 

Hi everibody,
I'm studing how to program the SI5351 without library, I learnt to produce a single frequency output but I still have problem when I want to create a sketch that makes me able to make a frequency coded by a rotary encoder.

Which register should I update?

Changing just from 42nd o 49th don't produce the desired output, I wonder if I have to resend all the registers seen in figure 12 of datasheet every time I want to change frequency output...
Can you help me?
73

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