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/*
* OS Dependent Functions for FatFs
*
* Copyright (c) 2023 Husqvarna AB
*
* SPDX-License-Identifier: Apache-2.0
*/
/* The file is based on template file by (C)ChaN, 2022, as
* available from FAT FS module source:
* https://github.com/zephyrproject-rtos/fatfs/blob/master/option/ffsystem.c
*/
#include <ff.h>
#if FF_USE_LFN == 3 /* Dynamic memory allocation */
/* Allocate a memory block */
void *ff_memalloc(UINT msize)
{
return k_malloc(msize);
}
/* Free a memory block */
void ff_memfree(void *mblock)
{
k_free(mblock);
}
#endif /* FF_USE_LFN == 3 */
#if FF_FS_REENTRANT /* Mutual exclusion */
/* Table of Zephyr mutex. One for each volume and an extra one for the ff system.
* See also the template file used as reference. Link is available in the header of this file.
*/
static struct k_mutex fs_reentrant_mutex[FF_VOLUMES + 1];
/* Create a Mutex
* Mutex ID vol: Volume mutex (0 to FF_VOLUMES - 1) or system mutex (FF_VOLUMES)
* Returns 1: Succeeded or 0: Could not create the mutex
*/
int ff_mutex_create(int vol)
{
return (int)(k_mutex_init(&fs_reentrant_mutex[vol]) == 0);
}
/* Delete a Mutex
* Mutex ID vol: Volume mutex (0 to FF_VOLUMES - 1) or system mutex (FF_VOLUMES)
*/
void ff_mutex_delete(int vol)
{
/* (nothing to do) */
(void)vol;
}
/* Request Grant to Access the Volume
* Mutex ID vol: Volume mutex (0 to FF_VOLUMES - 1) or system mutex (FF_VOLUMES)
* Returns 1: Succeeded or 0: Timeout
*/
int ff_mutex_take(int vol)
{
return (int)(k_mutex_lock(&fs_reentrant_mutex[vol], FF_FS_TIMEOUT) == 0);
}
/* Release Grant to Access the Volume
* Mutex ID vol: Volume mutex (0 to FF_VOLUMES - 1) or system mutex (FF_VOLUMES)
*/
void ff_mutex_give(int vol)
{
k_mutex_unlock(&fs_reentrant_mutex[vol]);
}
#endif /* FF_FS_REENTRANT */