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LibrePilot/flight/uavobjects/uavobjectpersistence.c

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/**
******************************************************************************
*
* @file uavobjectpersistence.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
* @brief handles uavo persistence
* --
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "openpilot.h"
#include "pios_struct_helper.h"
#include "inc/uavobjectprivate.h"
extern uintptr_t pios_uavo_settings_fs_id;
/**
* Save the data of the specified object to the file system (SD card).
* If the object contains multiple instances, all of them will be saved.
* A new file with the name of the object will be created.
* The object data can be restored using the UAVObjLoad function.
* @param[in] obj The object handle.
* @param[in] instId The instance ID
* @return 0 if success or -1 if failure
*/
int32_t UAVObjSave(UAVObjHandle obj_handle, uint16_t instId)
{
PIOS_Assert(obj_handle);
if (UAVObjIsMetaobject(obj_handle)) {
if (instId != 0) {
return -1;
}
if (PIOS_FLASHFS_ObjSave(pios_uavo_settings_fs_id, UAVObjGetID(obj_handle), instId, (uint8_t *)MetaDataPtr((struct UAVOMeta *)obj_handle), UAVObjGetNumBytes(obj_handle)) != 0) {
return -1;
}
} else {
InstanceHandle instEntry = getInstance((struct UAVOData *)obj_handle, instId);
if (instEntry == NULL) {
return -1;
}
if (InstanceData(instEntry) == NULL) {
return -1;
}
if (PIOS_FLASHFS_ObjSave(pios_uavo_settings_fs_id, UAVObjGetID(obj_handle), instId, InstanceData(instEntry), UAVObjGetNumBytes(obj_handle)) != 0) {
return -1;
}
}
return 0;
}
/**
* Load an object from the file system (SD card).
* A file with the name of the object will be opened.
* The object data can be saved using the UAVObjSave function.
* @param[in] obj The object handle.
* @param[in] instId The object instance
* @return 0 if success or -1 if failure
*/
int32_t UAVObjLoad(UAVObjHandle obj_handle, uint16_t instId)
{
PIOS_Assert(obj_handle);
if (UAVObjIsMetaobject(obj_handle)) {
if (instId != 0) {
return -1;
}
// Fire event on success
if (PIOS_FLASHFS_ObjLoad(pios_uavo_settings_fs_id, UAVObjGetID(obj_handle), instId, (uint8_t *)MetaDataPtr((struct UAVOMeta *)obj_handle), UAVObjGetNumBytes(obj_handle)) == 0) {
sendEvent((struct UAVOBase *)obj_handle, instId, EV_UNPACKED);
} else {
return -1;
}
} else {
InstanceHandle instEntry = getInstance((struct UAVOData *)obj_handle, instId);
if (instEntry == NULL) {
return -1;
}
// Fire event on success
if (PIOS_FLASHFS_ObjLoad(pios_uavo_settings_fs_id, UAVObjGetID(obj_handle), instId, InstanceData(instEntry), UAVObjGetNumBytes(obj_handle)) == 0) {
sendEvent((struct UAVOBase *)obj_handle, instId, EV_UNPACKED);
} else {
return -1;
}
}
return 0;
}
/**
* Delete an object from the file system (SD card).
* @param[in] obj The object handle.
* @param[in] instId The object instance
* @return 0 if success or -1 if failure
*/
int32_t UAVObjDelete(UAVObjHandle obj_handle, uint16_t instId)
{
PIOS_Assert(obj_handle);
PIOS_FLASHFS_ObjDelete(pios_uavo_settings_fs_id, UAVObjGetID(obj_handle), instId);
return 0;
}