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https://github.com/dimoniche/solarium.vlad.git
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95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
#include <ucos_ii.h>
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#include <includes.h>
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#include "ff.h"
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#if FF_FS_REENTRANT
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/*------------------------------------------------------------------------*/
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/* Create a Synchronization Object for a Volume*/
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/*------------------------------------------------------------------------*/
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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
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/ returned, the f_mount function fails with FR_INT_ERR.
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*/
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int ff_cre_syncobj ( /* 1:Function succeeded, 0:Could not create due to any error */
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BYTE vol, /* Corresponding logical drive being processed */
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FF_SYNC_t *sobj /* Pointer to return the created sync object */
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)
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{
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int ret;
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CPU_INT08U err;
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*sobj = OSMutexCreate(0, &err); // uC/OS-II
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ret = (err == OS_ERR_NONE) ? 1 : 0; //
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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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/*------------------------------------------------------------------------*/
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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
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/ returned, the f_mount function fails with FR_INT_ERR.
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*/
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int ff_del_syncobj ( /* 1:Function succeeded, 0:Could not delete due to any error */
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FF_SYNC_t sobj /* Sync object tied to the logical drive to be deleted */
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)
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{
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int ret;
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CPU_INT08U err;
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OSMutexDel(sobj, OS_DEL_ALWAYS, &err); // uC/OS-II
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ret = (err == OS_ERR_NONE) ? 1 : 0; //
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return ret;
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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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/* 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 ( /* 1:Got a grant to access the volume, 0:Could not get a grant */
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FF_SYNC_t sobj /* Sync object to wait */
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)
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{
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int ret;
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CPU_INT08U err;
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OSMutexPend(sobj, FF_FS_TIMEOUT, &err); // uC/OS-II
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ret = (err == OS_ERR_NONE) ? 1 : 0; //
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return ret;
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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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/* This function is called on leaving file functions to unlock the volume.
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*/
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void ff_rel_grant (
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FF_SYNC_t sobj /* Sync object to be signaled */
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)
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{
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OSMutexPost(sobj); // uC/OS-II
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}
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#else
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#error This file is not needed in this configuration.
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#endif
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