piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-26 15:50:00 -06:00
Code Issues Packages Projects Releases Wiki Activity

having fun with fatfs (#1189)

Browse Source 
* patch TSC coords in DSi mode
* DSiware importer and shit
This commit is contained in:
Arisotura
2021-08-24 17:46:20 +02:00
committed by GitHub
parent 346e8c0b87
commit 235da420c8
25 changed files with 26369 additions and 180 deletions
Download Patch File Download Diff File Expand all files Collapse all files

124
src/fatfs/ffsystem.c Normal file
View File

@ -0,0 +1,124 @@
/*------------------------------------------------------------------------*/
/* Sample Code of OS Dependent Functions for FatFs */
/* (C)ChaN, 2018 */
/*------------------------------------------------------------------------*/
#define _POSIX_THREAD_SAFE_FUNCTIONS
#include <time.h>
#include "ff.h"
#if FF_USE_LFN == 3 /* Dynamic memory allocation */
/*------------------------------------------------------------------------*/
/* Allocate a memory block */
/*------------------------------------------------------------------------*/
void* ff_memalloc ( /* Returns pointer to the allocated memory block (null if not enough core) */
UINT msize /* Number of bytes to allocate */
)
{
return malloc(msize); /* Allocate a new memory block with POSIX API */
}
/*------------------------------------------------------------------------*/
/* Free a memory block */
/*------------------------------------------------------------------------*/
void ff_memfree (
void* mblock /* Pointer to the memory block to free (nothing to do if null) */
)
{
free(mblock); /* Free the memory block with POSIX API */
}
#endif
#if FF_FS_REENTRANT /* Mutal exclusion */
/*------------------------------------------------------------------------*/
/* Create a Synchronization Object */
/*------------------------------------------------------------------------*/
/* This function is called in f_mount() function to create a new
/ synchronization object for the volume, such as semaphore and mutex.
/ When a 0 is returned, the f_mount() function fails with FR_INT_ERR.
*/
//const osMutexDef_t Mutex[FF_VOLUMES]; /* Table of CMSIS-RTOS mutex */
int ff_cre_syncobj ( /* 1:Function succeeded, 0:Could not create the sync object */
BYTE vol, /* Corresponding volume (logical drive number) */
FF_SYNC_t* sobj /* Pointer to return the created sync object */
)
{
}
/*------------------------------------------------------------------------*/
/* 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 0 is returned,
/ the f_mount() function fails with FR_INT_ERR.
*/
int ff_del_syncobj ( /* 1:Function succeeded, 0:Could not delete due to an error */
FF_SYNC_t sobj /* Sync object tied to the logical drive to be deleted */
)
{
}
/*------------------------------------------------------------------------*/
/* Request Grant to Access the Volume */
/*------------------------------------------------------------------------*/
/* This function is called on entering file functions to lock the volume.
/ When a 0 is returned, the file function fails with FR_TIMEOUT.
*/
int ff_req_grant ( /* 1:Got a grant to access the volume, 0:Could not get a grant */
FF_SYNC_t sobj /* Sync object to wait */
)
{
}
/*------------------------------------------------------------------------*/
/* Release Grant to Access the Volume */
/*------------------------------------------------------------------------*/
/* This function is called on leaving file functions to unlock the volume.
*/
void ff_rel_grant (
FF_SYNC_t sobj /* Sync object to be signaled */
)
{
}
#endif
DWORD get_fattime()
{
// TODO: return melonDS time instead of RTC??
time_t timestamp = time(NULL);
struct tm timedata;
localtime_r(&timestamp, &timedata);
DWORD ret;
ret = (timedata.tm_sec >> 1);
ret |= (timedata.tm_min << 5);
ret |= (timedata.tm_hour << 11);
ret |= (timedata.tm_mday << 16);
ret |= ((timedata.tm_mon + 1) << 21);
ret |= ((timedata.tm_year - 80) << 25);
return ret;
}