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Diffstat (limited to 'src/kernel/ao_log_metrum.c')
| -rw-r--r-- | src/kernel/ao_log_metrum.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/kernel/ao_log_metrum.c b/src/kernel/ao_log_metrum.c new file mode 100644 index 00000000..9b17adc2 --- /dev/null +++ b/src/kernel/ao_log_metrum.c @@ -0,0 +1,176 @@ +/* + * Copyright © 2012 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" +#include <ao_log.h> +#include <ao_data.h> +#include <ao_flight.h> + +static __xdata uint8_t ao_log_mutex; +static __xdata struct ao_log_metrum log; + +__code uint8_t ao_log_format = AO_LOG_FORMAT_TELEMETRUM; + +static uint8_t +ao_log_csum(__xdata uint8_t *b) __reentrant +{ + uint8_t sum = 0x5a; + uint8_t i; + + for (i = 0; i < sizeof (struct ao_log_metrum); i++) + sum += *b++; + return -sum; +} + +uint8_t +ao_log_metrum(__xdata struct ao_log_metrum *log) __reentrant +{ + uint8_t wrote = 0; + /* set checksum */ + log->csum = 0; + log->csum = ao_log_csum((__xdata uint8_t *) log); + ao_mutex_get(&ao_log_mutex); { + if (ao_log_current_pos >= ao_log_end_pos && ao_log_running) + ao_log_stop(); + if (ao_log_running) { + wrote = 1; + ao_storage_write(ao_log_current_pos, + log, + sizeof (struct ao_log_metrum)); + ao_log_current_pos += sizeof (struct ao_log_metrum); + } + } ao_mutex_put(&ao_log_mutex); + return wrote; +} + +static uint8_t +ao_log_dump_check_data(void) +{ + if (ao_log_csum((uint8_t *) &log) != 0) + return 0; + return 1; +} + +#if HAS_ADC +static __data uint8_t ao_log_data_pos; + +/* a hack to make sure that ao_log_metrums fill the eeprom block in even units */ +typedef uint8_t check_log_size[1-(256 % sizeof(struct ao_log_metrum))] ; + +#ifndef AO_SENSOR_INTERVAL_ASCENT +#define AO_SENSOR_INTERVAL_ASCENT 1 +#define AO_SENSOR_INTERVAL_DESCENT 10 +#define AO_OTHER_INTERVAL 32 +#endif + +void +ao_log(void) +{ + __pdata uint16_t next_sensor, next_other; + + ao_storage_setup(); + + ao_log_scan(); + + while (!ao_log_running) + ao_sleep(&ao_log_running); + +#if HAS_FLIGHT + log.type = AO_LOG_FLIGHT; + log.tick = ao_sample_tick; +#if HAS_ACCEL + log.u.flight.ground_accel = ao_ground_accel; +#endif + log.u.flight.ground_pres = ao_ground_pres; + log.u.flight.flight = ao_flight_number; + ao_log_metrum(&log); +#endif + + /* Write the whole contents of the ring to the log + * when starting up. + */ + ao_log_data_pos = ao_data_ring_next(ao_data_head); + next_other = next_sensor = ao_data_ring[ao_log_data_pos].tick; + ao_log_state = ao_flight_startup; + for (;;) { + /* Write samples to EEPROM */ + while (ao_log_data_pos != ao_data_head) { + log.tick = ao_data_ring[ao_log_data_pos].tick; + if ((int16_t) (log.tick - next_sensor) >= 0) { + log.type = AO_LOG_SENSOR; +#if HAS_MS5607 + log.u.sensor.pres = ao_data_ring[ao_log_data_pos].ms5607_raw.pres; + log.u.sensor.temp = ao_data_ring[ao_log_data_pos].ms5607_raw.temp; +#endif +#if HAS_ACCEL + log.u.sensor.accel = ao_data_accel(&ao_data_ring[ao_log_data_pos]); +#endif + ao_log_metrum(&log); + if (ao_log_state <= ao_flight_coast) + next_sensor = log.tick + AO_SENSOR_INTERVAL_ASCENT; + else + next_sensor = log.tick + AO_SENSOR_INTERVAL_DESCENT; + } + if ((int16_t) (log.tick - next_other) >= 0) { + log.type = AO_LOG_TEMP_VOLT; + log.u.volt.v_batt = ao_data_ring[ao_log_data_pos].adc.v_batt; + log.u.volt.sense_a = ao_data_ring[ao_log_data_pos].adc.sense_a; + log.u.volt.sense_m = ao_data_ring[ao_log_data_pos].adc.sense_m; + ao_log_metrum(&log); + next_other = log.tick + AO_OTHER_INTERVAL; + } + ao_log_data_pos = ao_data_ring_next(ao_log_data_pos); + } +#if HAS_FLIGHT + /* Write state change to EEPROM */ + if (ao_flight_state != ao_log_state) { + ao_log_state = ao_flight_state; + log.type = AO_LOG_STATE; + log.tick = ao_time(); + log.u.state.state = ao_log_state; + log.u.state.reason = 0; + ao_log_metrum(&log); + + if (ao_log_state == ao_flight_landed) + ao_log_stop(); + } +#endif + + ao_log_flush(); + + /* Wait for a while */ + ao_delay(AO_MS_TO_TICKS(100)); + + /* Stop logging when told to */ + while (!ao_log_running) + ao_sleep(&ao_log_running); + } +} +#endif + +uint16_t +ao_log_flight(uint8_t slot) +{ + if (!ao_storage_read(ao_log_pos(slot), + &log, + sizeof (struct ao_log_metrum))) + return 0; + + if (ao_log_dump_check_data() && log.type == AO_LOG_FLIGHT) + return log.u.flight.flight; + return 0; +} |