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Allow TeleMetrum to be operated with the antenna pointing downwards on
the pad. This provides some additional flexibility when designing an
ebay.
The accelerometer calibration levels are flipped around to match, so
no re-calibration should be required.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Instead of using the direct output of the kalman filter and hoping
that is quiet enough to detect landing, filter that with a long
exponential decay filter and then check to make sure that doesn't
change more than 2m in 5 seconds as a trigger for landing detection.
Tested with existing telemetrum flight logs and it correctly detects
landing in all cases.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Not that telem files are currently very useful as the kalman filter
gets completly confused by the variable steps caused by missing data, but...
Signed-off-by: Keith Packard <keithp@keithp.com>
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To simulate a saturated baro sensor, clip baro data at a specified
altitude. Continue to report the 'true' altitude in the output so that
the resulting graphs are useful.
Signed-off-by: Keith Packard <keithp@keithp.com>
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The flight code mashed together data processing, filtering and actual
flight managament into one giant pile. Split things up so that we
have:
ao_sample.c: Sensor data processing. Reads the ring, handles calibration
ao_kalman.c: Filter the data to track the accel/speed/height values
ao_flight.c: Flight state management, specific to rocketry.
The plan is to re-use ao_sample.c and ao_kalman.c for hardware not
specifically designed for rocketry, like TeleNano.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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This automates flight code testing by reporting mis-detected apogee or
main events.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This changes the full telemetry stream to include kalman data instead
of the old ad-hoc flight data. It's compatible in that the packet
sizes are the same so teledongle can receive either and figure out
which it has received.
A few plotting and testing tools are added to make validating the new
code easier.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This adds a baro-only kalman filter to track the state of the rocket,
and then uses it to control flight events instead of the existing
ad-hoc mechanisms.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This builds the flight code in baro-only mode for testing.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Fix up ao_convert.c so that it can be used within the flight test code
instead of having a (broken) copy of the code there.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Not all boards will have these, so fix places that use them to deal
with that.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Switch to using { func, "X args\0Desc" } to specify command, saving
a char field by looking at help[0] instead, and reduce help length by
doing alignment with printf instead of hardcoded spaces.
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The flight test code had static accelerometer configuration values,
making it impossible to use data from different boards without
recompiling. As the eeprom and telem log files both contain the
necessary data, parse that instead.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Instead of having everyone wait on the raw ADC ring, have the flight
code wait on that and have everyone else wait for the flight code to
finish looking at the data and move its pointer forwards.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Use the provided ground acceleration average to set the two
accelerometer calibration values so that the flight code will
detect pad/idle mode correctly.
Signed-off-by: Keith Packard <keithp@keithp.com>
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The flight test harness needs to expose every function used by the
flight code in some form, and this macro is about to become used.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Calibration now uses two values, one upside right and the other upside
down instead of a single horizontal value. This allows the use of
other accelerometers and compensates for variations in the divider
circuit to provide more accurate data.
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This splits the packet code into master/slave halves and hooks the
slave side up to the getchar/putchar/flush logic in ao_stdio.c
Signed-off-by: Keith Packard <keithp@keithp.com>
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Tracking the rocket on the ground may be easier using tones than using
the digital data stream, so we'll try that and see what we think.
This reverts commit 3a3bfd471a868d546d83cdc431b53c8f5208edb9.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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