Attending
Thomas Watteyne [remote]
Tengfei Chang [remote]
Action Items
Titan Yuan to confirm that the error on the temperature measurement is indeed that good.
Minutes
Titan Yuan BLE RX
not sure whether picks up BLE packets or something
discussion about addressing used, advertisement address and access address
access address is the only address not scambled, ADV address is
outstanding questions to Brad Wheeler
Titan Yuan Flexboard
Fil Maksimovic made them last week
they are fragile but some work
LC frequency calibration works
TODO: 2-point temperature calibration
no UART
Titan Yuan temperature averaging
how many temperature samples are needed to average over?
sample every 100ms
don’t see a huge benefit in averaging over more than 10-20 samples
Kristofer PISTER : discussion about Alan variance, agrees
TODO: Titan Yuan to confirm that the error on the temperature measurement is indeed that good.
tried to perform TC frequency cal with RF timer
Kristofer PISTER looks like a single calibration would hold in a 20 C range
LC linear with fine code, ratio between two counters is linear with temperature
describes the freqeuency sweep tests
question: is there a relationship between TX and RX settings?
there doesn’t seem to be a relationship between TX and RX
Kristofer PISTER is taking the average of the settings the right thing to do?
Kristofer PISTER does crossing a mid setting impact the result?
Kristofer PISTER the state of the divider should impact teh frequency
Tengfei Chang to repeat both with divider on/off and see the delta that we get
Kristofer PISTER key questinos about LC monotonic, if the mid-code delta is reasonably constant, you can make more sense of mapping delta’s between TX and RX
Tengfei Chang to plot zoomed in versionof the same data, over only a single coarse setting
Introduce the QuickCal algorithm