diff options
| author | Keith Packard <keithp@keithp.com> | 2012-10-29 17:07:05 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-10-29 17:13:23 -0700 |
| commit | f7d2613bb0a6ab1c63e3f6252a3a2358fdfbc691 (patch) | |
| tree | d65409298ee14ef88d2cc65404224bd805bb6533 /src/micropeak | |
| parent | 0d0ece403028e8a4453cc380575ed95c5e00ddb7 (diff) | |
altos/micropeak: Set boost detect to 10m. Add 30s boost delay.
Wait for 30 seconds before even starting look for boost. This provides
an opportunity to close up the airframe, potentially causing pressure
gradients seen by the baro sensor.
Also, require a 10m vertical motion before triggering boost. This
should limit accidental boost detect while capturing any actual flights.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/micropeak')
| -rw-r--r-- | src/micropeak/ao_micropeak.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/micropeak/ao_micropeak.c b/src/micropeak/ao_micropeak.c index 1d11300e..bf656979 100644 --- a/src/micropeak/ao_micropeak.c +++ b/src/micropeak/ao_micropeak.c @@ -48,7 +48,10 @@ ao_pa_get(void) #define GROUND_AVG (1 << GROUND_AVG_SHIFT) /* Pressure change (in Pa) to detect boost */ -#define BOOST_DETECT 48 /* 4m at sea level, 4.8m at 2000m */ +#define BOOST_DETECT 120 /* 10m at sea level, 12m at 2000m */ + +/* Wait after power on before doing anything to give the user time to assemble the rocket */ +#define BOOST_DELAY AO_SEC_TO_TICKS(30) /* Pressure change (in Pa) to detect landing */ #define LAND_DETECT 12 /* 1m at sea level, 1.2m at 2000m */ @@ -121,6 +124,7 @@ main(void) ao_log_micro_dump(); #endif + ao_delay(BOOST_DELAY); /* Wait for motion, averaging values to get ground pressure */ time = ao_time(); ao_pa_get(); @@ -136,8 +140,6 @@ main(void) ao_led_off(AO_LED_BLUE); pa_avg = pa_avg - (pa_avg >> FILTER_SHIFT) + pa; pa_diff = pa_ground - pa_avg; - if (pa_diff < 0) - pa_diff = -pa_diff; /* Check for a significant pressure change */ if (pa_diff > (BOOST_DETECT << FILTER_SHIFT)) |