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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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.
ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
*/
/*------------------------------------------------------------------------*/
/* Sample code of OS dependent controls for FatFs R0.08b */
/* (C)ChaN, 2011 */
/*------------------------------------------------------------------------*/
#include "ch.h"
#include "ff.h"
#if _FS_REENTRANT
/*------------------------------------------------------------------------*/
/* Static array of Synchronization Objects */
/*------------------------------------------------------------------------*/
static Semaphore ff_sem[_VOLUMES];
/*------------------------------------------------------------------------*/
/* Create a Synchronization Object */
/*------------------------------------------------------------------------*/
int ff_cre_syncobj(BYTE vol, _SYNC_t *sobj) {
*sobj = &ff_sem[vol];
chSemInit(*sobj, 1);
return TRUE;
}
/*------------------------------------------------------------------------*/
/* Delete a Synchronization Object */
/*------------------------------------------------------------------------*/
int ff_del_syncobj(_SYNC_t sobj) {
chSemReset(sobj, 0);
return TRUE;
}
/*------------------------------------------------------------------------*/
/* Request Grant to Access the Volume */
/*------------------------------------------------------------------------*/
int ff_req_grant(_SYNC_t sobj) {
msg_t msg = chSemWaitTimeout(sobj, (systime_t)_FS_TIMEOUT);
return msg == RDY_OK;
}
/*------------------------------------------------------------------------*/
/* Release Grant to Access the Volume */
/*------------------------------------------------------------------------*/
void ff_rel_grant(_SYNC_t sobj) {
chSemSignal(sobj);
}
#endif /* _FS_REENTRANT */
#if _USE_LFN == 3 /* LFN with a working buffer on the heap */
/*------------------------------------------------------------------------*/
/* Allocate a memory block */
/*------------------------------------------------------------------------*/
void *ff_memalloc(UINT size) {
return chHeapAlloc(NULL, size);
}
/*------------------------------------------------------------------------*/
/* Free a memory block */
/*------------------------------------------------------------------------*/
void ff_memfree(void *mblock) {
chHeapFree(mblock);
}
#endif /* _USE_LFN == 3 */
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