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_open;
  24 static uint8_t  log_mutex;
  25
  26 static void
  27 ao_log_open(void)
  28 {
  29         char    name[12];
  30         int8_t  status;
  31
  32         sprintf(name,"%04d%02d%02dLOG", 2000 + log_year, log_month, log_day);
  33         status = ao_fat_open(name, AO_FAT_OPEN_WRITE);
  34         switch (status) {
  35         case AO_FAT_SUCCESS:
  36                 ao_fat_seek(0, AO_FAT_SEEK_END);
  37                 log_open = 1;
  38                 break;
  39         case -AO_FAT_ENOENT:
  40                 status = ao_fat_creat(name);
  41                 if (status == AO_FAT_SUCCESS)
  42                         log_open = 1;
  43                 break;
  44         }
  45 }
  46
  47 static void
  48 ao_log_close(void)
  49 {
  50         log_open = 0;
  51         ao_fat_close();
  52 }
  53
  54 uint8_t
  55 ao_log_full(void)
  56 {
  57         return ao_fat_full();
  58 }
  59
  60 uint8_t
  61 ao_log_mega(struct ao_log_mega *log)
  62 {
  63         uint8_t wrote = 0;
  64         ao_mutex_get(&log_mutex);
  65         if (log->type == AO_LOG_GPS_TIME) {
  66                 if (log_open &&
  67                     (log_year != log->u.gps.year ||
  68                      log_month != log->u.gps.month ||
  69                      log_day != log->u.gps.day)) {
  70                         ao_log_close();
  71                 }
  72                 if (!log_open) {
  73                         log_year = log->u.gps.year;
  74                         log_month = log->u.gps.month;
  75                         log_day = log->u.gps.day;
  76                         ao_log_open();
  77                 }
  78         }
  79         if (log_open) {
  80                 wrote = ao_fat_write(log, sizeof (*log)) == AO_FAT_SUCCESS;
  81                 ao_fat_sync();
  82         }
  83         ao_mutex_put(&log_mutex);
  84         return wrote;
  85 }