git.gag.com Git - fw/altos/blob - src/drivers/ao_log_fat.c

   1 /*
   2  * Copyright © 2013 Keith Packard <keithp@keithp.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; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 #include "ao.h"
  19 #include "ao_log.h"
  20 #include "ao_fat.h"
  21
  22 static uint8_t  log_year, log_month, log_day;
  23 static uint8_t  log_running;
  24 static uint8_t  log_mutex;
  25
  26 static void
  27 ao_log_open(void)
  28 {
  29         char    name[12];
  30
  31         sprintf(name,"%04d%02d%02dLOG", 2000 + log_year, log_month, log_day);
  32         if (ao_fat_open(name, AO_FAT_OPEN_WRITE) == AO_FAT_SUCCESS)
  33                 log_running = 1;
  34 }
  35
  36 static void
  37 ao_log_close(void)
  38 {
  39         log_running = 0;
  40         ao_fat_close();
  41 }
  42
  43 uint8_t
  44 ao_log_full(void)
  45 {
  46         return ao_fat_full();
  47 }
  48
  49 uint8_t
  50 ao_log_mega(struct ao_log_mega *log)
  51 {
  52         uint8_t wrote = 0;
  53         ao_mutex_get(&log_mutex);
  54         if (log->type == AO_LOG_GPS_TIME) {
  55                 if (log_running &&
  56                     (log_year != log->u.gps.year ||
  57                      log_month != log->u.gps.month ||
  58                      log_day != log->u.gps.day)) {
  59                         ao_log_close();
  60                 }
  61                 if (!log_running) {
  62                         log_year = log->u.gps.year;
  63                         log_month = log->u.gps.month;
  64                         log_day = log->u.gps.day;
  65                         ao_log_open();
  66                 }
  67         }
  68         if (log_running) {
  69                 wrote = ao_fat_write(log, sizeof (*log)) == AO_FAT_SUCCESS;
  70                 ao_fat_sync();
  71         }
  72         ao_mutex_put(&log_mutex);
  73         return wrote;
  74 }