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This commit is contained in:
Arisotura
2021-08-12 15:35:13 +02:00
parent d67380c5dc
commit 50500cfd49
9 changed files with 283 additions and 278 deletions
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184
src/fatfs/diskio.c
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@ -10,10 +10,32 @@
#include "ff.h" /* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
/* Definitions of physical drive number for each drive */
#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
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 = NULL;
WriteCb = NULL;
Status &= ~STA_PROTECT;
Status |= STA_NODISK;
}
/*-----------------------------------------------------------------------*/
@ -24,32 +46,7 @@ DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
int result;
switch (pdrv) {
case DEV_RAM :
result = RAM_disk_status();
// translate the reslut code here
return stat;
case DEV_MMC :
result = MMC_disk_status();
// translate the reslut code here
return stat;
case DEV_USB :
result = USB_disk_status();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
return Status;
}
@ -62,32 +59,8 @@ DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
int result;
switch (pdrv) {
case DEV_RAM :
result = RAM_disk_initialize();
// translate the reslut code here
return stat;
case DEV_MMC :
result = MMC_disk_initialize();
// translate the reslut code here
return stat;
case DEV_USB :
result = USB_disk_initialize();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
Status &= ~STA_NOINIT;
return Status;
}
@ -103,39 +76,12 @@ DRESULT disk_read (
UINT count /* Number of sectors to read */
)
{
DRESULT res;
int result;
if (Status & (STA_NOINIT | STA_NODISK)) return RES_NOTRDY;
if (!ReadCb) return RES_ERROR;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
result = RAM_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
result = MMC_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_USB :
// translate the arguments here
result = USB_disk_read(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
UINT res = ReadCb(buff, sector, count);
if (res != count) return RES_ERROR;
return RES_OK;
}
@ -153,39 +99,13 @@ DRESULT disk_write (
UINT count /* Number of sectors to write */
)
{
DRESULT res;
int result;
if (Status & (STA_NOINIT | STA_NODISK)) return RES_NOTRDY;
if (Status & STA_PROTECT) return RES_WRPRT;
if (!WriteCb) return RES_ERROR;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
result = RAM_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
result = MMC_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_USB :
// translate the arguments here
result = USB_disk_write(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
UINT res = WriteCb(buff, sector, count);
if (res != count) return RES_ERROR;
return RES_OK;
}
#endif
@ -201,29 +121,7 @@ DRESULT disk_ioctl (
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
int result;
switch (pdrv) {
case DEV_RAM :
// Process of the command for the RAM drive
return res;
case DEV_MMC :
// Process of the command for the MMC/SD card
return res;
case DEV_USB :
// Process of the command the USB drive
return res;
}
printf("disk_ioctl(%02X, %02X, %p)\n", pdrv, cmd, buff);
return RES_PARERR;
}