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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_telestatic log;
  25
  26 const uint8_t ao_log_format = AO_LOG_FORMAT_TELESTATIC;
  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_telestatic); i++)
  35                 sum += *b++;
  36         return -sum;
  37 }
  38
  39 static uint8_t
  40 ao_log_telestatic(void)
  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_telestatic));
  54                         ao_log_current_pos += sizeof (struct ao_log_telestatic);
  55                 }
  56         } ao_mutex_put(&ao_log_mutex);
  57         return wrote;
  58 }
  59
  60 #if HAS_ADC
  61 static uint8_t  ao_log_data_pos;
  62
  63 /* a hack to make sure that ao_log_metrums fill the eeprom block in even units */
  64 typedef uint8_t check_log_size[1-(256 % sizeof(struct ao_log_telestatic))] ;
  65 #endif
  66
  67 void
  68 ao_log(void)
  69 {
  70         ao_storage_setup();
  71
  72         do {
  73                 ao_log_scan();
  74
  75                 while (!ao_log_running)
  76                         ao_sleep(&ao_log_running);
  77
  78                 log.type = AO_LOG_FLIGHT;
  79                 log.tick = ao_time();
  80                 log.u.flight.flight = ao_flight_number;
  81                 ao_log_telestatic();
  82
  83                 /* Write the whole contents of the ring to the log
  84                 * when starting up.
  85                 */
  86                 ao_log_data_pos = ao_data_ring_next(ao_data_head);
  87                 for (;;) {
  88                         /* Write samples to EEPROM */
  89                         while (ao_log_data_pos != ao_data_head) {
  90                                 log.tick = ao_data_ring[ao_log_data_pos].tick;
  91                                 log.type = AO_LOG_SENSOR;
  92 #if HAS_ADS131A0X
  93                                 log.u.sensor.pressure = ao_data_ring[ao_log_data_pos].ads131a0x.ain[0];
  94                                 log.u.sensor.pressure2 = ao_data_ring[ao_log_data_pos].ads131a0x.ain[1];
  95                                 log.u.sensor.thrust = ao_data_ring[ao_log_data_pos].ads131a0x.ain[2];
  96                                 log.u.sensor.mass = ao_data_ring[ao_log_data_pos].ads131a0x.ain[3];
  97 #endif
  98                                 log.u.sensor.t_low = ao_data_ring[ao_log_data_pos].max6691.sensor[0].t_low;
  99                                 int i;
 100                                 for (i = 0; i < 4; i++)
 101                                         log.u.sensor.t_high[i] = ao_data_ring[ao_log_data_pos].max6691.sensor[i].t_high;
 102                                 ao_log_telestatic();
 103                                 ao_log_data_pos = ao_data_ring_next(ao_log_data_pos);
 104                         }
 105
 106                         ao_log_flush();
 107
 108                         if (!ao_log_running) break;
 109
 110                         /* Wait for a while */
 111                         ao_delay(AO_MS_TO_TICKS(100));
 112                 }
 113         } while (ao_log_running);
 114 }
 115