+++ /dev/null
-/*
- * Copyright © 2011 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-#include "ao.h"
-
-/* Main flight thread. */
-
-__pdata enum ao_flight_state ao_flight_state; /* current flight state */
-__pdata uint16_t ao_launch_tick; /* time of launch detect */
-
-/*
- * track min/max data over a long interval to detect
- * resting
- */
-__pdata uint16_t ao_interval_end;
-__pdata alt_t ao_interval_min_height;
-__pdata alt_t ao_interval_max_height;
-
-__pdata uint8_t ao_flight_force_idle;
-
-/* Landing is detected by getting constant readings from both pressure and accelerometer
- * for a fairly long time (AO_INTERVAL_TICKS)
- */
-#define AO_INTERVAL_TICKS AO_SEC_TO_TICKS(5)
-
-static void
-ao_flight_nano(void)
-{
- ao_sample_init();
- ao_flight_state = ao_flight_startup;
-
- for (;;) {
- /*
- * Process ADC samples, just looping
- * until the sensors are calibrated.
- */
- if (!ao_sample())
- continue;
-
- switch (ao_flight_state) {
- case ao_flight_startup:
- if (ao_flight_force_idle) {
- /* Set idle mode */
- ao_flight_state = ao_flight_idle;
- } else {
- ao_flight_state = ao_flight_pad;
- /* Disable packet mode in pad state */
- ao_packet_slave_stop();
-
- /* Turn on telemetry system */
- ao_rdf_set(1);
- ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_PAD);
- }
- /* signal successful initialization by turning off the LED */
- ao_led_off(AO_LED_RED);
-
- /* wakeup threads due to state change */
- ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
- break;
- case ao_flight_pad:
- if (ao_height> AO_M_TO_HEIGHT(20)) {
- ao_flight_state = ao_flight_drogue;
- ao_launch_tick = ao_sample_tick;
-
- /* start logging data */
- ao_log_start();
-
- ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
- }
- break;
- case ao_flight_drogue:
- /* drogue/main to land:
- *
- * barometer: altitude stable
- */
-
- if (ao_height < ao_interval_min_height)
- ao_interval_min_height = ao_height;
- if (ao_height > ao_interval_max_height)
- ao_interval_max_height = ao_height;
-
- if ((int16_t) (ao_sample_tick - ao_interval_end) >= 0) {
- if (ao_interval_max_height - ao_interval_min_height < AO_M_TO_HEIGHT(5))
- {
- ao_flight_state = ao_flight_landed;
-
- /* turn off the ADC capture */
- ao_timer_set_adc_interval(0);
- ao_wakeup(DATA_TO_XDATA(&ao_flight_state));
- }
- ao_interval_min_height = ao_interval_max_height = ao_height;
- ao_interval_end = ao_sample_tick + AO_INTERVAL_TICKS;
- }
- break;
- }
- }
-}
-
-static __xdata struct ao_task flight_task;
-
-void
-ao_flight_nano_init(void)
-{
- ao_flight_state = ao_flight_startup;
- ao_add_task(&flight_task, ao_flight_nano, "flight");
-}