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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Instead of checking just a single measurement to see if the
orientation is outside of the desired limits, use the maximum of 64
previous values to that rapidly changing orientation won't
accidentally enable a pyro channel if sampled at the 'wrong time'.
Signed-off-by: Keith Packard <keithp@keithp.com>
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We only use this for baro-only devices to avoid firing drogue charges
at mach transitions; we trust the combination of accel+baro to do the
right thing when available.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Instead of completely eliminating the baro sensor above mach speed,
just derate it a bit so that the accel will dominate for speed
computation and keep the device from false-triggering across mach
transitions.
When we completely ignored the baro sensor above mach, and the flight
spent considerable time in that speed range, then the estimated height
could be far from the real value. When the estimated speed dropped
back down and the baro values were brought back into the computation,
then the resulting rapid shift in estimated speed could trigger
accidental apogee detection.
By mixing in a bit of baro data even above mach, we keep the estimated
height closer to the baro value and prevent this error, at least in
flights measured so far.
The flight known to have this problem is:
2015-09-26-serial-2093-flight-0012.eeprom
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Stores 32-bits for all of the flight parameters. Uses 64-bit
intermediates for kalman computation.
Signed-off-by: Keith Packard <keithp@keithp.com>
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core remains a bad name to use -- dirvish skips files (and
directories, it seems) with that name.
Signed-off-by: Keith Packard <keithp@keithp.com>
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