78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
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#include "ff.h"
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#include <FreeRTOS.h>
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#if _USE_LFN == 3 /* LFN with a working buffer on the heap */
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#include <stdlib.h>
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#endif
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#if _FS_REENTRANT
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/*
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* Create a Synchronization Object
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* This function is called in f_mount() function to create a new
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* synchronization object, such as semaphore and mutex. When a 0 is returned,
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* the f_mount() function fails with FR_INT_ERR.
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*/
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int ff_cre_syncobj(BYTE vol, xSemaphoreHandle *sobj)
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{
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int ret;
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*sobj = xSemaphoreCreateMutex();
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ret = (int)(*sobj != NULL);
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return ret;
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}
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/*
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* Delete a Synchronization Object
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* This function is called in f_mount() function to delete a synchronization
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* object that created with ff_cre_syncobj() function. When a 0 is returned,
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* the f_mount() function fails with FR_INT_ERR.
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*/
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int ff_del_syncobj(xSemaphoreHandle sobj)
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{
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vSemaphoreDelete(sobj);
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return 1;
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}
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/*
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* Request Grant to Access the Volume
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* This function is called on entering file functions to lock the volume.
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* When a 0 is returned, the file function fails with FR_TIMEOUT.
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*/
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int ff_req_grant(xSemaphoreHandle sobj)
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{
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return (int)(xSemaphoreTake(sobj, _FS_TIMEOUT) == pdTRUE);
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}
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/*
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* Release Grant to Access the Volume
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* This function is called on leaving file functions to unlock the volume.
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*/
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void ff_rel_grant(xSemaphoreHandle sobj)
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{
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xSemaphoreGive(sobj);
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}
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#endif
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#if _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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* If a NULL is returned, the file function fails with FR_NOT_ENOUGH_CORE.
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*/
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void* ff_memalloc(UINT msize)
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{
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return malloc(msize);
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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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{
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free(mblock);
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}
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#endif
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