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   1 /*
   2  * Copyright © 2017 Bdale Garbee <bdale@gag.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #include "ao.h"
  20 #include <ao_log.h>
  21 #include <ao_data.h>
  22 #include <ao_flight.h>
  23
  24 static struct ao_log_firetwo log;
  25
  26 const uint8_t ao_log_format = AO_LOG_FORMAT_TELEFIRETWO;
  27
  28 static uint8_t
  29 ao_log_csum(uint8_t *b)
  30 {
  31         uint8_t sum = 0x5a;
  32         uint8_t i;
  33
  34         for (i = 0; i < sizeof (struct ao_log_firetwo); i++)
  35                 sum += *b++;
  36         return -sum;
  37 }
  38
  39 uint8_t
  40 ao_log_firetwo(struct ao_log_firetwo *log)
  41 {
  42         uint8_t wrote = 0;
  43         /* set checksum */
  44         log->csum = 0;
  45         log->csum = ao_log_csum((uint8_t *) log);
  46         ao_mutex_get(&ao_log_mutex); {
  47                 if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
  48                         ao_log_stop();
  49                 if (ao_log_running) {
  50                         wrote = 1;
  51                         ao_storage_write(ao_log_current_pos,
  52                                          log,
  53                                          sizeof (struct ao_log_firetwo));
  54                         ao_log_current_pos += sizeof (struct ao_log_firetwo);
  55                 }
  56         } ao_mutex_put(&ao_log_mutex);
  57         return wrote;
  58 }
  59
  60 static uint8_t
  61 ao_log_dump_check_data(void)
  62 {
  63         if (ao_log_csum((uint8_t *) &log) != 0)
  64                 return 0;
  65         return 1;
  66 }
  67
  68 #if HAS_ADC
  69 static uint8_t  ao_log_data_pos;
  70
  71 /* a hack to make sure that ao_log_metrums fill the eeprom block in even units */
  72 typedef uint8_t check_log_size[1-(256 % sizeof(struct ao_log_firetwo))] ;
  73 #endif
  74
  75 void
  76 ao_log(void)
  77 {
  78         uint16_t ao_flight_state = ao_flight_startup;
  79
  80         ao_storage_setup();
  81
  82         do {
  83                 ao_log_scan();
  84
  85                 while (!ao_log_running)
  86                         ao_sleep(&ao_log_running);
  87
  88                 log.type = AO_LOG_FLIGHT;
  89                 log.tick = ao_time();
  90                 log.u.flight.flight = ao_flight_number;
  91                 ao_log_firetwo(&log);
  92
  93                 /* Write the whole contents of the ring to the log
  94                 * when starting up.
  95                 */
  96                 ao_log_data_pos = ao_data_ring_next(ao_data_head);
  97                 ao_log_state = ao_flight_startup;
  98                 for (;;) {
  99                         /* Write samples to EEPROM */
 100                         while (ao_log_data_pos != ao_data_head) {
 101                                 log.tick = ao_data_ring[ao_log_data_pos].tick;
 102                                 log.type = AO_LOG_SENSOR;
 103                                 log.u.sensor.pressure = ao_data_ring[ao_log_data_pos].adc.pressure;
 104                                 log.u.sensor.thrust = ao_data_ring[ao_log_data_pos].adc.thrust;
 105         //                      for (i = 0; i < 4; i++) {
 106         //                              log.u.sensor.thermistor[i] = ao_data_ring[ao_log_data_pos].sensor.thermistor[i];
 107         //                      }
 108                                 ao_log_firetwo(&log);
 109                                 ao_log_data_pos = ao_data_ring_next(ao_log_data_pos);
 110                         }
 111                         /* Write state change to EEPROM */
 112                         if (ao_flight_state != ao_log_state) {
 113                                 ao_log_state = ao_flight_state;
 114                                 log.type = AO_LOG_STATE;
 115                                 log.tick = ao_time();
 116                                 log.u.state.state = ao_log_state;
 117                                 log.u.state.reason = 0;
 118                                 ao_log_firetwo(&log);
 119
 120                                 if (ao_log_state == ao_flight_landed)
 121                                         ao_log_stop();
 122                         }
 123
 124                         ao_log_flush();
 125
 126                         if (!ao_log_running) break;
 127
 128                         /* Wait for a while */
 129                         ao_delay(AO_MS_TO_TICKS(100));
 130                 }
 131         } while (ao_log_running);
 132 }
 133
 134 uint16_t
 135 ao_log_flight(uint8_t slot)
 136 {
 137         if (!ao_storage_read(ao_log_pos(slot),
 138                              &log,
 139                              sizeof (struct ao_log_firetwo)))
 140                 return 0;
 141
 142         if (ao_log_dump_check_data() && log.type == AO_LOG_FLIGHT)
 143                 return log.u.flight.flight;
 144         return 0;
 145 }