85 lines
3.3 KiB
C
85 lines
3.3 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
/* 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 */
|