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MicroPeak v2 uses this rate.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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ChaosKey will use an OpenMoko vid/pid, so we need the ability to
configure a different USB vendor ID for each product.
Signed-off-by: Keith Packard <keithp@keithp.com>
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TeleMini doesn't have space for the larger table, and the smaller one
isn't that much less accurate at lower altitudes.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Shared code for building pressure tables
Signed-off-by: Keith Packard <keithp@keithp.com>
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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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This allows projects to store the altitude data in different
representations or with different access modes.
By default, altitude data is stored in meters, but the initializers
include decimeter values so those can be used instead if desired.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This improves the computation of the table enough that errors from a
470 entry table are almost all < 0.5m.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Add CRC, whitening, FEC and interleaving routines for transmission
path to allow cc1120 to send telem packets to cc1111.
Signed-off-by: Keith Packard <keithp@keithp.com>
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To be used with the MS5607 which generates data in calibrated units.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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The linker is supposed to do this, but it ignores the static
initializer data added after the code.
Signed-off-by: Keith Packard <keithp@keithp.com>
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The sdcc linker doesn't check the sum of pdata+xdata memory usage, it
only ensures that xdata itself is small enough. This doesn't keep
xdata below the end of usable ram on the cc1111 though (0xfe000).
Fix up the check-stack program to also make sure all of xdata fits in
available memory.
Signed-off-by: Keith Packard <keithp@keithp.com>
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The stack used during system initialization lives at the top of RAM,
so leave some space for that.
Signed-off-by: Keith Packard <keithp@keithp.com>
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v1.0 boards have noisy accelerometer data caused by interactions
between RF transmission and the accelerometer measurements; this noise
generates a negative bias in the accelerometer readings. The net
effect is that the estimated speed is lower than the actual speed,
causing early an apogee estimate.
By increasing the sigma value for accelerometer data, the kalman
filter 'trusts' the acceleration data less, putting more weight on the
barometer data. This causes the estimated time of apogee to be closer
to the correct value.
This reduces the response to changes in acceleration.
This new value is applied solely to TeleMetrum v1.0 boards. v1.1
boards correct for this error, and hence can use the correct sigma
value for the accelerometer.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Dash can't deal with >&, so use the old-school > file 2>&1
Signed-off-by: Keith Packard <keithp@keithp.com>
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Adds a few drivers including an LCD driver
Signed-off-by: Keith Packard <keithp@keithp.com>
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Split out sources into separate directories:
core: architecture and product independent bits
cc1111: cc1111-specific code
drivers: architecture independent drivers
product: product-specific sources and Makefile fragments
util: scripts for building stuff
This should have no effect on the built products, but testing is encouraged
Signed-off-by: Keith Packard <keithp@keithp.com>
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