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having fun with fatfs (#1189)

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* 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
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134
src/fatfs/diskio.c Normal file
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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include "ff.h" /* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
static ff_disk_read_cb ReadCb;
static ff_disk_write_cb WriteCb;
static DSTATUS Status = STA_NOINIT | STA_NODISK;
void ff_disk_open(ff_disk_read_cb readcb, ff_disk_write_cb writecb)
{
if (!readcb) return;
ReadCb = readcb;
WriteCb = writecb;
Status &= ~STA_NODISK;
if (!writecb) Status |= STA_PROTECT;
else Status &= ~STA_PROTECT;
}
void ff_disk_close()
{
ReadCb = (void*)0;
WriteCb = (void*)0;
Status &= ~STA_PROTECT;
Status |= STA_NODISK;
}
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
return Status;
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
Status &= ~STA_NOINIT;
return Status;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
if (Status & (STA_NOINIT | STA_NODISK)) return RES_NOTRDY;
if (!ReadCb) return RES_ERROR;
UINT res = ReadCb(buff, sector, count);
if (res != count) return RES_ERROR;
return RES_OK;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if FF_FS_READONLY == 0
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
if (Status & (STA_NOINIT | STA_NODISK)) return RES_NOTRDY;
if (Status & STA_PROTECT) return RES_WRPRT;
if (!WriteCb) return RES_ERROR;
UINT res = WriteCb(buff, sector, count);
if (res != count) return RES_ERROR;
return RES_OK;
}
#endif
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
switch (cmd)
{
case 0: // sync
// TODO: fflush?
return RES_OK;
}
//printf("disk_ioctl(%02X, %02X, %p)\n", pdrv, cmd, buff);
return RES_PARERR;
}