Duplicate state after updating measurement

[mungewell]

Hi, I am doing some testing and noticed that the internal state did not change after I updated the measurement value, is this normal?

00:02:00:03 517.3335 0.5173335 (0.5173335, 5.173335e-19, 0.0)
00:03:00:01 510.3335 0.8164169 (0.5103335, 0.3062001, -0.0001166667)
00:04:00:02 669.6335 1.380269 (0.6696335, 0.7079802, 0.002655)
00:05:00:05 826.2334 2.040783 (0.8262335, 1.211982, 0.002567212)
00:06:00:04 960.8334 2.040783 (0.8262335, 1.211982, 0.002567212) <------------
00:07:00:04 1104.033 3.63215 (1.104033, 2.525782, 0.002334454)
00:08:00:04 1216.533 4.474111 (1.216534, 3.255702, 0.001875)
00:09:00:01 1347.133 5.413293 (1.347134, 4.063982, 0.002176666)
00:10:00:03 1482.533 6.438293 (1.482534, 4.953503, 0.002256667)
00:11:00:02 1593.534 7.505007 (1.593534, 5.909623, 0.001850008)
00:12:00:04 1721.934 8.684042 (1.721934, 6.960003, 0.002104918)
00:13:00:01 1828.434 8.684042 (1.721934, 6.960003, 0.002104918) <-------------

In this data the 1st column is effectively time (HH:MM:SS:FF) and you will notice that I am slowly updating every 60s or so. I have limitations in my system which means I need to slow the PID down for now as I can't adjust the control too quickly... I have plans to improve this soon. 2nd data is the measurement (time delta in us), 3rd is out (adjustment to PIO clock divider)

My control loop is slowed by the speed which I can write data to the OLED screen on my Pico. It is only grabbing a measurement around 3Hz, and also averaging that to remove jitter noise from servicing the interrupts which are used to create timestamp.