void
ao_flight(void)
{
- __pdata static uint8_t nsamples = 0;
+ __pdata static uint16_t nsamples = 0;
ao_flight_adc = ao_adc_head;
ao_raw_accel_prev = 0;
ao_raw_accel = 0;
ao_raw_pres = 0;
- ao_interval_cur_min_pres = 0x7fff;
- ao_interval_cur_max_pres = -0x7fff;
- ao_interval_cur_min_accel = 0x7fff;
- ao_interval_cur_max_accel = -0x7fff;
ao_flight_tick = 0;
for (;;) {
ao_sleep(&ao_adc_ring);
ao_min_vel = -ao_flight_vel;
}
- if (ao_flight_pres < ao_interval_cur_min_pres)
- ao_interval_cur_min_pres = ao_flight_pres;
- if (ao_flight_pres > ao_interval_cur_max_pres)
- ao_interval_cur_max_pres = ao_flight_pres;
- if (ao_flight_accel < ao_interval_cur_min_accel)
- ao_interval_cur_min_accel = ao_flight_accel;
- if (ao_flight_accel > ao_interval_cur_max_accel)
- ao_interval_cur_max_accel = ao_flight_accel;
-
- if ((int16_t) (ao_flight_tick - ao_interval_end) >= 0) {
- ao_interval_max_pres = ao_interval_cur_max_pres;
- ao_interval_min_pres = ao_interval_cur_min_pres;
- ao_interval_max_accel = ao_interval_cur_max_accel;
- ao_interval_min_accel = ao_interval_cur_min_accel;
- ao_interval_end = ao_flight_tick + AO_INTERVAL_TICKS;
- ao_interval_cur_min_pres = ao_interval_cur_max_pres = ao_flight_pres;
- ao_interval_cur_min_accel = ao_interval_cur_max_accel = ao_flight_accel;
- }
-
switch (ao_flight_state) {
case ao_flight_startup:
/* startup state:
*
- * Collect 100 samples of acceleration and pressure
+ * Collect 1000 samples of acceleration and pressure
* data and average them to find the resting values
*/
- if (nsamples < 100) {
+ if (nsamples < 1000) {
ao_raw_accel_sum += ao_raw_accel;
ao_raw_pres_sum += ao_raw_pres;
++nsamples;
ao_flight_vel = 0;
ao_min_vel = 0;
- ao_interval_end = ao_flight_tick;
-
/* Go to launchpad state if the nose is pointing up */
ao_config_get();
if (ao_flight_accel < ao_config.accel_zero_g - ACCEL_NOSE_UP) {
/* Turn on telemetry system
*/
ao_rdf_set(1);
- ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_FLIGHT);
+ ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_PAD);
ao_flight_state = ao_flight_launchpad;
ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
/* start logging data */
ao_log_start();
+ /* Increase telemetry rate */
+ ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_FLIGHT);
+
/* disable RDF beacon */
ao_rdf_set(0);
ao_flight_state = ao_flight_drogue;
ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
}
+ /*
+ * Start recording min/max accel and pres for a while
+ * to figure out when the rocket has landed
+ */
+ /* Set the 'last' limits to max range to prevent
+ * early resting detection
+ */
+ ao_interval_min_accel = 0;
+ ao_interval_max_accel = 0x7fff;
+ ao_interval_min_pres = 0;
+ ao_interval_max_pres = 0x7fff;
+
+ /* initialize interval values */
+ ao_interval_end = ao_flight_tick + AO_INTERVAL_TICKS;
+
+ ao_interval_cur_min_pres = ao_interval_cur_max_pres = ao_flight_pres;
+ ao_interval_cur_min_accel = ao_interval_cur_max_accel = ao_flight_accel;
+
break;
case ao_flight_drogue:
ao_flight_state = ao_flight_main;
ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
}
+
/* fall through... */
case ao_flight_main:
* OR
* barometer: altitude stable and within 1000m of the launch altitude
*/
+
+ if (ao_flight_pres < ao_interval_cur_min_pres)
+ ao_interval_cur_min_pres = ao_flight_pres;
+ if (ao_flight_pres > ao_interval_cur_max_pres)
+ ao_interval_cur_max_pres = ao_flight_pres;
+ if (ao_flight_accel < ao_interval_cur_min_accel)
+ ao_interval_cur_min_accel = ao_flight_accel;
+ if (ao_flight_accel > ao_interval_cur_max_accel)
+ ao_interval_cur_max_accel = ao_flight_accel;
+
+ if ((int16_t) (ao_flight_tick - ao_interval_end) >= 0) {
+ ao_interval_max_pres = ao_interval_cur_max_pres;
+ ao_interval_min_pres = ao_interval_cur_min_pres;
+ ao_interval_max_accel = ao_interval_cur_max_accel;
+ ao_interval_min_accel = ao_interval_cur_min_accel;
+ ao_interval_end = ao_flight_tick + AO_INTERVAL_TICKS;
+ ao_interval_cur_min_pres = ao_interval_cur_max_pres = ao_flight_pres;
+ ao_interval_cur_min_accel = ao_interval_cur_max_accel = ao_flight_accel;
+ }
+
if ((abs(ao_flight_vel) < ACCEL_VEL_LAND &&
- (ao_interval_max_accel - ao_interval_min_accel) < ACCEL_INT_LAND) ||
+ (uint16_t) (ao_interval_max_accel - ao_interval_min_accel) < (uint16_t) ACCEL_INT_LAND) ||
(ao_flight_pres > ao_ground_pres - BARO_LAND &&
- (ao_interval_max_pres - ao_interval_min_pres) < BARO_INT_LAND))
+ (uint16_t) (ao_interval_max_pres - ao_interval_min_pres) < (uint16_t) BARO_INT_LAND))
{
ao_flight_state = ao_flight_landed;
/* turn off the ADC capture */
ao_timer_set_adc_interval(0);
- /* stop logging data */
- ao_log_stop();
-
ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
}
break;