X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fcore%2Fao_microflight.c;fp=src%2Fcore%2Fao_microflight.c;h=0000000000000000000000000000000000000000;hp=f680e4005c98a5cf9be432ed61509f79d1239863;hb=24167015705ae831692b95735968b04a876f935e;hpb=bb9fdef607728cc326a82aa632e59724f272e53b diff --git a/src/core/ao_microflight.c b/src/core/ao_microflight.c deleted file mode 100644 index f680e400..00000000 --- a/src/core/ao_microflight.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright © 2013 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 -#endif -#include -#include - -uint32_t pa; -uint32_t pa_ground; -uint32_t pa_min; - -static void -ao_microsample(void) -{ - ao_pa_get(); - ao_microkalman_predict(); - ao_microkalman_correct(); -} - -#define NUM_PA_HIST (GROUND_AVG) - -#define SKIP_PA_HIST(i,j) (((i) + (j)) & (NUM_PA_HIST - 1)) - -static uint32_t pa_hist[NUM_PA_HIST]; - -void -ao_microflight(void) -{ - int16_t sample_count; - uint16_t time; - uint32_t pa_interval_min, pa_interval_max; - int32_t pa_diff; - uint8_t h, i; - uint8_t accel_lock = 0; - uint32_t pa_sum = 0; - - /* Wait for motion, averaging values to get ground pressure */ - - time = ao_time(); - ao_pa_get(); - ao_microkalman_init(); - pa_ground = pa; - sample_count = 0; - h = 0; - for (;;) { - time += SAMPLE_SLEEP; - if ((sample_count & 0x1f) == 0) - ao_led_on(AO_LED_REPORT); - ao_delay_until(time); - ao_microsample(); - if ((sample_count & 0x1f) == 0) - ao_led_off(AO_LED_REPORT); - pa_hist[h] = pa; - h = SKIP_PA_HIST(h,1); - pa_diff = pa_ground - ao_pa; - - /* Check for a significant pressure change */ - if (pa_diff > BOOST_DETECT) - break; - - if (sample_count < GROUND_AVG * 2) { - if (sample_count < GROUND_AVG) - pa_sum += pa; - ++sample_count; - } else { - pa_ground = pa_sum >> GROUND_AVG_SHIFT; - pa_sum = 0; - sample_count = 0; - } - } - - /* Go back and find the last sample close to the ground */ - pa_min = pa_ground - LAND_DETECT; - for (i = SKIP_PA_HIST(h,-2); i != SKIP_PA_HIST(h,2); i = SKIP_PA_HIST(i,-2)) { - if (pa_hist[i] >= pa_min) - break; - } - - /* Log the remaining samples so we get a complete history since leaving the ground */ - for (; i != h; i = SKIP_PA_HIST(i,2)) { - pa = pa_hist[i]; - ao_log_micro_data(); - } - - /* Now sit around until the pressure is stable again and record the max */ - - sample_count = 0; - pa_min = ao_pa; - pa_interval_min = ao_pa; - pa_interval_max = ao_pa; - for (;;) { - time += SAMPLE_SLEEP; - ao_delay_until(time); - if ((sample_count & 3) == 0) - ao_led_on(AO_LED_REPORT); - ao_microsample(); - if ((sample_count & 3) == 0) - ao_led_off(AO_LED_REPORT); - if (sample_count & 1) - ao_log_micro_data(); - - /* If accelerating upwards, don't look for min pressure */ - if (ao_pa_accel < ACCEL_LOCK_PA) - accel_lock = ACCEL_LOCK_TIME; - else if (accel_lock) - --accel_lock; - else if (ao_pa < pa_min) - pa_min = ao_pa; - - if (sample_count == (GROUND_AVG - 1)) { - pa_diff = pa_interval_max - pa_interval_min; - - /* Check to see if the pressure is now stable */ - if (pa_diff < LAND_DETECT) - break; - sample_count = 0; - pa_interval_min = ao_pa; - pa_interval_max = ao_pa; - } else { - if (ao_pa < pa_interval_min) - pa_interval_min = ao_pa; - if (ao_pa > pa_interval_max) - pa_interval_max = ao_pa; - ++sample_count; - } - } -}