Frequency Set Failure with Sequential Setting of Clk0 and Clk1 about si5351arduino HOT 3 OPEN

Thank you for the report!

from si5351arduino.

I ran into this too and just a thought: if you change sequentially and the clk1 is > 100 and the new clk0 >100 clk0 will not be set because only one clk can be above 100 MHz. After setting clk1 below 100 in your first attempt and setting clk0 in your second a frequency >100 is not a problem anymore.
I solved it by ordering frequencies from low to high and sending them in that order.
eg if the original setting for 3 clk's is clk0>80,1>60,2>156 and the new settings are 0>143,1>70,2>90 I will send 1>70,2>90,0>143.

from si5351arduino.

I don't know if my problem is the same as this one, but maybe. I find that if I set CLK0 and then CLK2, CLK0 becomes unstable (while CLK1 is fine), but if I set CLK0 and CLK1, both clocks are stable. The two oscillators are 100 Hz apart in frequency. My PCB is using CLK0 and CLK2, so this is inconvenient. I should mention that I'm using an older version of the library as well, because in newer versions I could not change the frequencies as fast as I could with the older libraries about a year ago. I should try to see if this has perhaps been resolved, but didn't have time today.

Any ideas what might be happening?

Thanks,

Rob

from si5351arduino.