radio/src/storage/rambackup.cpp

   1 /*
   2  * Copyright (C) OpenTX
   3  *
   4  * Based on code named
   5  *   th9x - http://code.google.com/p/th9x
   6  *   er9x - http://code.google.com/p/er9x
   7  *   gruvin9x - http://code.google.com/p/gruvin9x
   8  *
   9  * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #include "opentx.h"
  22
  23 namespace Backup {
  24 #define BACKUP
  25 #include "datastructs.h"
  26 PACK(struct RamBackupUncompressed {
  27   ModelData model;
  28   RadioData radio;
  29 });
  30 #undef BACKUP
  31 };
  32
  33 #include "datacopy.cpp"
  34
  35 Backup::RamBackupUncompressed ramBackupUncompressed __DMA;
  36
  37 #if defined(SIMU)
  38 RamBackup _ramBackup;
  39 RamBackup * ramBackup = &_ramBackup;
  40 #else
  41 RamBackup * ramBackup = (RamBackup *)BKPSRAM_BASE;
  42 #endif
  43
  44 void rambackupWrite()
  45 {
  46   copyRadioData(&ramBackupUncompressed.radio, &g_eeGeneral);
  47   copyModelData(&ramBackupUncompressed.model, &g_model);
  48   ramBackup->size = compress(ramBackup->data, 4094, (const uint8_t *)&ramBackupUncompressed, sizeof(ramBackupUncompressed));
  49   TRACE("RamBackupWrite sdsize=%d backupsize=%d rlcsize=%d", sizeof(ModelData)+sizeof(RadioData), sizeof(Backup::RamBackupUncompressed), ramBackup->size);
  50 }
  51
  52 bool rambackupRestore()
  53 {
  54   if (ramBackup->size == 0)
  55     return false;
  56
  57   if (uncompress((uint8_t *)&ramBackupUncompressed, sizeof(ramBackupUncompressed), ramBackup->data, ramBackup->size) != sizeof(ramBackupUncompressed))
  58     return false;
  59
  60   memset(&g_eeGeneral, 0, sizeof(g_eeGeneral));
  61   memset(&g_model, 0, sizeof(g_model));
  62   copyRadioData(&g_eeGeneral, &ramBackupUncompressed.radio);
  63   copyModelData(&g_model, &ramBackupUncompressed.model);
  64   return true;
  65 }