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85 lines
3.3 KiB
C
85 lines
3.3 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*------------------------------------------------------------------------*/
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/* Sample code of OS dependent controls for FatFs */
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/* (C)ChaN, 2014 */
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/*------------------------------------------------------------------------*/
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#include "hal.h"
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#include "ff.h"
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#if FF_FS_REENTRANT
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/*------------------------------------------------------------------------*/
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/* Static array of Synchronization Objects */
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/*------------------------------------------------------------------------*/
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static semaphore_t ff_sem[FF_VOLUMES];
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/*------------------------------------------------------------------------*/
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/* Create a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_cre_syncobj(BYTE vol, FF_SYNC_t *sobj) {
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*sobj = &ff_sem[vol];
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chSemObjectInit(*sobj, 1);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Delete a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_del_syncobj(FF_SYNC_t sobj) {
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chSemReset(sobj, 0);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Request Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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int ff_req_grant(FF_SYNC_t sobj) {
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msg_t msg = chSemWaitTimeout(sobj, (systime_t)FF_FS_TIMEOUT);
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return msg == MSG_OK;
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}
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/*------------------------------------------------------------------------*/
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/* Release Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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void ff_rel_grant(FF_SYNC_t sobj) {
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chSemSignal(sobj);
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}
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#endif /* FF_FS_REENTRANT */
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#if FF_USE_LFN == 3 /* LFN with a working buffer on the heap */
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/*------------------------------------------------------------------------*/
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/* Allocate a memory block */
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/*------------------------------------------------------------------------*/
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void *ff_memalloc(UINT size) {
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return chHeapAlloc(NULL, size);
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}
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/*------------------------------------------------------------------------*/
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/* Free a memory block */
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/*------------------------------------------------------------------------*/
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void ff_memfree(void *mblock) {
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chHeapFree(mblock);
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}
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#endif /* FF_USE_LFN == 3 */
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