X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fao_flight.c;fp=src%2Fao_flight.c;h=0000000000000000000000000000000000000000;hp=85c1825bddfebf68c06f2d2b055c511eddae4164;hb=9513be7f9d3d0b0ec29f6487fa9dc8f1ac24d0de;hpb=3bfe8df44b575ca430ffaa051e20faa955a06c03 diff --git a/src/ao_flight.c b/src/ao_flight.c deleted file mode 100644 index 85c1825b..00000000 --- a/src/ao_flight.c +++ /dev/null @@ -1,315 +0,0 @@ -/* - * Copyright © 2009 Keith Packard - * - * 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. - */ - -#ifndef AO_FLIGHT_TEST -#include "ao.h" -#endif - -#ifndef HAS_ACCEL -#error Please define HAS_ACCEL -#endif - -#ifndef HAS_GPS -#error Please define HAS_GPS -#endif - -#ifndef HAS_USB -#error Please define HAS_USB -#endif - -/* 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 int16_t ao_interval_min_height; -__pdata int16_t ao_interval_max_height; -__pdata uint8_t ao_flight_force_idle; - -/* We also have a clock, which can be used to sanity check things in - * case of other failures - */ - -#define BOOST_TICKS_MAX AO_SEC_TO_TICKS(15) - -/* 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(10) - -#define abs(a) ((a) < 0 ? -(a) : (a)) - -void -ao_flight(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: - - /* Check to see what mode we should go to. - * - Invalid mode if accel cal appears to be out - * - pad mode if we're upright, - * - idle mode otherwise - */ -#if HAS_ACCEL - if (ao_config.accel_plus_g == 0 || - ao_config.accel_minus_g == 0 || - ao_ground_accel < ao_config.accel_plus_g - ACCEL_NOSE_UP || - ao_ground_accel > ao_config.accel_minus_g + ACCEL_NOSE_UP) - { - /* Detected an accel value outside -1.5g to 1.5g - * (or uncalibrated values), so we go into invalid mode - */ - ao_flight_state = ao_flight_invalid; - - } else -#endif - if (!ao_flight_force_idle -#if HAS_ACCEL - && ao_ground_accel < ao_config.accel_plus_g + ACCEL_NOSE_UP -#endif - ) - { - /* Set pad mode - we can fly! */ - ao_flight_state = ao_flight_pad; -#if HAS_USB - /* Disable the USB controller in flight mode - * to save power - */ - ao_usb_disable(); -#endif - - /* 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); - } else { - /* Set idle mode */ - ao_flight_state = ao_flight_idle; - - /* 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: - - /* pad to boost: - * - * barometer: > 20m vertical motion - * OR - * accelerometer: > 2g AND velocity > 5m/s - * - * The accelerometer should always detect motion before - * the barometer, but we use both to make sure this - * transition is detected. If the device - * doesn't have an accelerometer, then ignore the - * speed and acceleration as they are quite noisy - * on the pad. - */ - if (ao_height > AO_M_TO_HEIGHT(20) -#if HAS_ACCEL - || (ao_accel > AO_MSS_TO_ACCEL(20) && - ao_speed > AO_MS_TO_SPEED(5)) -#endif - ) - { - ao_flight_state = ao_flight_boost; - ao_launch_tick = ao_sample_tick; - - /* start logging data */ - ao_log_start(); - - /* Increase telemetry rate */ - ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_FLIGHT); - - /* disable RDF beacon */ - ao_rdf_set(0); - -#if HAS_GPS - /* Record current GPS position by waking up GPS log tasks */ - ao_wakeup(&ao_gps_data); - ao_wakeup(&ao_gps_tracking_data); -#endif - - ao_wakeup(DATA_TO_XDATA(&ao_flight_state)); - } - break; - case ao_flight_boost: - - /* boost to fast: - * - * accelerometer: start to fall at > 1/4 G - * OR - * time: boost for more than 15 seconds - * - * Detects motor burn out by the switch from acceleration to - * deceleration, or by waiting until the maximum burn duration - * (15 seconds) has past. - */ - if ((ao_accel < AO_MSS_TO_ACCEL(-2.5) && ao_height > AO_M_TO_HEIGHT(100)) || - (int16_t) (ao_sample_tick - ao_launch_tick) > BOOST_TICKS_MAX) - { -#if HAS_ACCEL - ao_flight_state = ao_flight_fast; -#else - ao_flight_state = ao_flight_coast; -#endif - ao_wakeup(DATA_TO_XDATA(&ao_flight_state)); - } - break; -#if HAS_ACCEL - case ao_flight_fast: - /* - * This is essentially the same as coast, - * but the barometer is being ignored as - * it may be unreliable. - */ - if (ao_speed < AO_MS_TO_SPEED(AO_MAX_BARO_SPEED)) - { - ao_flight_state = ao_flight_coast; - ao_wakeup(DATA_TO_XDATA(&ao_flight_state)); - } - break; -#endif - case ao_flight_coast: - - /* apogee detect: coast to drogue deploy: - * - * speed: < 0 - * - * Also make sure the model altitude is tracking - * the measured altitude reasonably closely; otherwise - * we're probably transsonic. - */ - if (ao_speed < 0 -#if !HAS_ACCEL - && (ao_sample_alt >= AO_MAX_BARO_HEIGHT || ao_error_h_sq_avg < 100) -#endif - ) - { - /* ignite the drogue charge */ - ao_ignite(ao_igniter_drogue); - - /* slow down the telemetry system */ - ao_telemetry_set_interval(AO_TELEMETRY_INTERVAL_RECOVER); - - /* Turn the RDF beacon back on */ - ao_rdf_set(1); - - /* and enter drogue state */ - ao_flight_state = ao_flight_drogue; - ao_wakeup(DATA_TO_XDATA(&ao_flight_state)); - } - - break; - case ao_flight_drogue: - - /* drogue to main deploy: - * - * barometer: reach main deploy altitude - * - * Would like to use the accelerometer for this test, but - * the orientation of the flight computer is unknown after - * drogue deploy, so we ignore it. Could also detect - * high descent rate using the pressure sensor to - * recognize drogue deploy failure and eject the main - * at that point. Perhaps also use the drogue sense lines - * to notice continutity? - */ - if (ao_height <= ao_config.main_deploy) - { - ao_ignite(ao_igniter_main); - - /* - * Start recording min/max height - * to figure out when the rocket has landed - */ - - /* initialize interval values */ - ao_interval_end = ao_sample_tick + AO_INTERVAL_TICKS; - - ao_interval_min_height = ao_interval_max_height = ao_avg_height; - - ao_flight_state = ao_flight_main; - ao_wakeup(DATA_TO_XDATA(&ao_flight_state)); - } - break; - - /* fall through... */ - case ao_flight_main: - - /* main to land: - * - * barometer: altitude stable - */ - - if (ao_avg_height < ao_interval_min_height) - ao_interval_min_height = ao_avg_height; - if (ao_avg_height > ao_interval_max_height) - ao_interval_max_height = ao_avg_height; - - if ((int16_t) (ao_sample_tick - ao_interval_end) >= 0) { - if (ao_interval_max_height - ao_interval_min_height <= AO_M_TO_HEIGHT(4)) - { - 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_avg_height; - ao_interval_end = ao_sample_tick + AO_INTERVAL_TICKS; - } - break; - case ao_flight_landed: - break; - } - } -} - -static __xdata struct ao_task flight_task; - -void -ao_flight_init(void) -{ - ao_flight_state = ao_flight_startup; - ao_add_task(&flight_task, ao_flight, "flight"); -}