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The crystal we use is only good for 20ppm, which generates a fairly
significant error bounds at our RF frequency. This commit adds a
configuration variable that sets the RF frequency control variable so
that the output frequency can be adjusted.
Signed-off-by: Keith Packard <keithp@keithp.com>
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ao_cmd_lex_u32 is produced in addition to ao_cmd_lex_i so that
functions can easily read 32-bit values from the command line.
Signed-off-by: Keith Packard <keithp@keithp.com>
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With the switch to the skytraq GPS unit, we don't have the same level
of detail in the GPS stream, so stop reporting that in the telemetry
stream, in the UI and writing it to eeprom.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Pull the date out of the GPS stream and send it over the telemetry
link and write it to the eeprom.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This makes it easier to tie the telemetry and eeprom files together as
they're now both labeled with serial and flight numbers, which should
be unique.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This resets the processor using the watchdog timer.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This is a generally useful command line utility.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This allows the ground station to convert the accelerometer sensor
values into acceleration and speed data. This requires a new telemetry
data structure, and so TeleMetrum and TeleDongle units must be updated
synchronously. ao-view will parse either telemetry stream, and the
serial format from TeleDongle now has a version number to allow for
future changes.
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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ao_wake_task signals a specific task to wake up.
ao_exit terminates the current task.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Provide for a delay after apogee before the drogue charge is
fired. This allows TM to be used as a back-up altimeter.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This is a build-time option selected by hacking the Makefile at present.
Signed-off-by: Keith Packard <keithp@keithp.com>
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It's pretty much impossible to RDF the rocket during flight, and it
interferes with the telemetry data stream. Leave it enabled on the pad
so that radios can be tested, and then re-enable it once the rocket
has landed.
This patch also turns the rdf 'on' time into a parameter so it can be
changed, and then sets that parameter to 500ms, once every 5 seconds.
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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When the GPS signal strength data was added, the structure was
accidentally extended to 9 bytes, making all log records 9 bytes
long. While not a serious problem, this left log records spanning
across eeprom block boundaries, which seems like a bad plan.
Signed-off-by: Keith Packard <keithp@keithp.com>
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SiRF message #4 includes signal strength and GPS engine state for each
of the satellites being tracked. This data is now parsed and sent to
eeprom and the radio.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This tracks whether the GPS receiver has ever sent a valid report to the
flight computer, allowing the user to tell whether the GPS receiver is
working at all.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Assume GPS is either in 4800 NMEA or 57600 SiRF mode, send just the sequence
to get from 4800 NMEA to 5760 SiRF.
Also, eliminate threads from the gps test program.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Having switched to the SiRF binary GPS format, the velocity and error data
can now be displayed.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This switches the GPS unit from NMEA to SiRF protocol at startup and then
parses the binary data. The binary data uses a different encoding of lat/lon
than the NMEA strings, and so the telemetry and eeprom data formats change
with this switch.
Signed-off-by: Keith Packard <keithp@keithp.com>
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None of our boards have a 32kHz xtal oscillator, instead we use those pins
(on Telemetrum) for the deployment firing circuits. The old clock
initialization code was switching from the 32kHz RC oscillator to the 32kHz
crystal and overriding our use of those pins.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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