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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [FileSystem/] [FatFs-0.7e/] [src/] [option/] [syncobj.c] - Blame information for rev 606

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/*------------------------------------------------------------------------*/
/* Sample code of OS dependent synchronization object controls            */
/* for FatFs R0.07d  (C)ChaN, 2009                                        */
/*------------------------------------------------------------------------*/
 
#include <FreeRTOS.h>
#include <semphr.h>
 
#include "../ff.h"
 
#if _FS_REENTRANT
 
/*------------------------------------------------------------------------*/
/* Create a Synchronization Object for a Volume                           */
/*------------------------------------------------------------------------*/
/* This function is called in f_mount function to create a new
/  synchronization object, such as semaphore and mutex. When a FALSE is
/  returned, the f_mount function fails with FR_INT_ERR.
*/
 
BOOL ff_cre_syncobj (   /* TRUE:Function succeeded, FALSE:Could not create due to any error */
        BYTE vol,                       /* Corresponding logical drive being processed */
        _SYNC_t *sobj           /* Pointer to return the created sync object */
)
{
        BOOL ret;
 
        *sobj = xSemaphoreCreateMutex();
 
        if( *sobj == NULL )
        {
                ret = FALSE;
        }
        else
        {
                ret = TRUE;
        }
 
        return ret;
}
 
 
 
/*------------------------------------------------------------------------*/
/* Delete a Synchronization Object                                        */
/*------------------------------------------------------------------------*/
/* This function is called in f_mount function to delete a synchronization
/  object that created with ff_cre_syncobj function. When a FALSE is
/  returned, the f_mount function fails with FR_INT_ERR.
*/
 
BOOL ff_del_syncobj (   /* TRUE:Function succeeded, FALSE:Could not delete due to any error */
        _SYNC_t sobj            /* Sync object tied to the logical drive to be deleted */
)
{
        BOOL ret;
 
        if( sobj != NULL )
        {
                vQueueDelete( sobj );
                ret = TRUE;
        }
        else
        {
                ret = FALSE;
        }
 
        return ret;
}
 
 
 
/*------------------------------------------------------------------------*/
/* Request Grant to Access the Volume                                     */
/*------------------------------------------------------------------------*/
/* This function is called on entering file functions to lock the volume.
/  When a FALSE is returned, the file function fails with FR_TIMEOUT.
*/
 
BOOL ff_req_grant (     /* TRUE:Got a grant to access the volume, FALSE:Could not get a grant */
        _SYNC_t sobj    /* Sync object to wait */
)
{
        BOOL ret;
 
        ret = xSemaphoreTake( sobj, _FS_TIMEOUT );
 
        return ret;
}
 
 
 
/*------------------------------------------------------------------------*/
/* Release Grant to Access the Volume                                     */
/*------------------------------------------------------------------------*/
/* This function is called on leaving file functions to unlock the volume.
*/
 
void ff_rel_grant (
        _SYNC_t sobj    /* Sync object to be signaled */
)
{
        xSemaphoreGive( sobj );
}
 
 
#else
 
#error This file is not needed in this configuration.
 
#endif

Line No.	Rev	Author	Line
1	606	jeremybenn	`/------------------------------------------------------------------------/`
2			`/* Sample code of OS dependent synchronization object controls */`
3			`/* for FatFs R0.07d (C)ChaN, 2009 */`
4			`/------------------------------------------------------------------------/`
5
6			`#include <FreeRTOS.h>`
7			`#include <semphr.h>`
8
9			`#include "../ff.h"`
10
11			`#if _FS_REENTRANT`
12
13			`/------------------------------------------------------------------------/`
14			`/* Create a Synchronization Object for a Volume */`
15			`/------------------------------------------------------------------------/`
16			`/* This function is called in f_mount function to create a new`
17			`/ synchronization object, such as semaphore and mutex. When a FALSE is`
18			`/ returned, the f_mount function fails with FR_INT_ERR.`
19			`*/`
20
21			`BOOL ff_cre_syncobj ( /* TRUE:Function succeeded, FALSE:Could not create due to any error */`
22			`BYTE vol, /* Corresponding logical drive being processed */`
23			`_SYNC_t sobj / Pointer to return the created sync object */`
24			`)`
25			`{`
26			`BOOL ret;`
27
28			`*sobj = xSemaphoreCreateMutex();`
29
30			`if( *sobj == NULL )`
31			`{`
32			`ret = FALSE;`
33			`}`
34			`else`
35			`{`
36			`ret = TRUE;`
37			`}`
38
39			`return ret;`
40			`}`
41
42
43
44			`/------------------------------------------------------------------------/`
45			`/* Delete a Synchronization Object */`
46			`/------------------------------------------------------------------------/`
47			`/* This function is called in f_mount function to delete a synchronization`
48			`/ object that created with ff_cre_syncobj function. When a FALSE is`
49			`/ returned, the f_mount function fails with FR_INT_ERR.`
50			`*/`
51
52			`BOOL ff_del_syncobj ( /* TRUE:Function succeeded, FALSE:Could not delete due to any error */`
53			`_SYNC_t sobj /* Sync object tied to the logical drive to be deleted */`
54			`)`
55			`{`
56			`BOOL ret;`
57
58			`if( sobj != NULL )`
59			`{`
60			`vQueueDelete( sobj );`
61			`ret = TRUE;`
62			`}`
63			`else`
64			`{`
65			`ret = FALSE;`
66			`}`
67
68			`return ret;`
69			`}`
70
71
72
73			`/------------------------------------------------------------------------/`
74			`/* Request Grant to Access the Volume */`
75			`/------------------------------------------------------------------------/`
76			`/* This function is called on entering file functions to lock the volume.`
77			`/ When a FALSE is returned, the file function fails with FR_TIMEOUT.`
78			`*/`
79
80			`BOOL ff_req_grant ( /* TRUE:Got a grant to access the volume, FALSE:Could not get a grant */`
81			`_SYNC_t sobj /* Sync object to wait */`
82			`)`
83			`{`
84			`BOOL ret;`
85
86			`ret = xSemaphoreTake( sobj, _FS_TIMEOUT );`
87
88			`return ret;`
89			`}`
90
91
92
93			`/------------------------------------------------------------------------/`
94			`/* Release Grant to Access the Volume */`
95			`/------------------------------------------------------------------------/`
96			`/* This function is called on leaving file functions to unlock the volume.`
97			`*/`
98
99			`void ff_rel_grant (`
100			`_SYNC_t sobj /* Sync object to be signaled */`
101			`)`
102			`{`
103			`xSemaphoreGive( sobj );`
104			`}`
105
106
107			`#else`
108
109			`#error This file is not needed in this configuration.`
110
111			`#endif`

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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [FileSystem/] [FatFs-0.7e/] [src/] [option/] [syncobj.c] - Blame information for rev 606