diskio.h File Reference
#include "integer.h"
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Macros | |
| #define | _USE_WRITE 1 /* 1: Enable disk_write function */ |
| #define | _USE_IOCTL 1 /* 1: Enable disk_ioctl fucntion */ |
| #define | STA_NOINIT 0x01 /* Drive not initialized */ |
| #define | STA_NODISK 0x02 /* No medium in the drive */ |
| #define | STA_PROTECT 0x04 /* Write protected */ |
| #define | CTRL_SYNC 0 /* Flush disk cache (for write functions) */ |
| #define | GET_SECTOR_COUNT 1 /* Get media size (for only f_mkfs()) */ |
| #define | GET_SECTOR_SIZE 2 /* Get sector size (for multiple sector size (_MAX_SS >= 1024)) */ |
| #define | GET_BLOCK_SIZE 3 /* Get erase block size (for only f_mkfs()) */ |
| #define | CTRL_ERASE_SECTOR 4 /* Force erased a block of sectors (for only _USE_ERASE) */ |
| #define | CTRL_POWER 5 /* Get/Set power status */ |
| #define | CTRL_LOCK 6 /* Lock/Unlock media removal */ |
| #define | CTRL_EJECT 7 /* Eject media */ |
| #define | CTRL_FORMAT 8 /* Create physical format on the media */ |
| #define | MMC_GET_TYPE 10 /* Get card type */ |
| #define | MMC_GET_CSD 11 /* Get CSD */ |
| #define | MMC_GET_CID 12 /* Get CID */ |
| #define | MMC_GET_OCR 13 /* Get OCR */ |
| #define | MMC_GET_SDSTAT 14 /* Get SD status */ |
| #define | ATA_GET_REV 20 /* Get F/W revision */ |
| #define | ATA_GET_MODEL 21 /* Get model name */ |
| #define | ATA_GET_SN 22 /* Get serial number */ |
| #define | CT_MMC 0x01 /* MMC ver 3 */ |
| #define | CT_SD1 0x02 /* SD ver 1 */ |
| #define | CT_SD2 0x04 /* SD ver 2 */ |
| #define | CT_SDC (CT_SD1|CT_SD2) /* SD */ |
| #define | CT_BLOCK 0x08 /* Block addressing */ |
Typedefs | |
| typedef BYTE | DSTATUS |
Enumerations | |
| enum | DRESULT { RES_OK = 0, RES_ERROR, RES_WRPRT, RES_NOTRDY, RES_PARERR } |
Functions | |
| DSTATUS | disk_initialize (BYTE) |
| DSTATUS | disk_status (BYTE) |
| DRESULT | disk_read (BYTE, BYTE *, DWORD, BYTE) |
| DRESULT | disk_write (BYTE, const BYTE *, DWORD, BYTE) |
| DRESULT | disk_ioctl (BYTE, BYTE, DWORD *) |
Macro Definition Documentation
| #define _USE_IOCTL 1 /* 1: Enable disk_ioctl fucntion */ |
| #define _USE_WRITE 1 /* 1: Enable disk_write function */ |
| #define CTRL_ERASE_SECTOR 4 /* Force erased a block of sectors (for only _USE_ERASE) */ |
| #define CTRL_FORMAT 8 /* Create physical format on the media */ |
| #define CTRL_SYNC 0 /* Flush disk cache (for write functions) */ |
| #define GET_BLOCK_SIZE 3 /* Get erase block size (for only f_mkfs()) */ |
| #define GET_SECTOR_COUNT 1 /* Get media size (for only f_mkfs()) */ |
| #define GET_SECTOR_SIZE 2 /* Get sector size (for multiple sector size (_MAX_SS >= 1024)) */ |
Typedef Documentation
Enumeration Type Documentation
| enum DRESULT |
Definition at line 22 of file diskio.h.
{
RES_OK = 0, /* 0: Successful */
RES_ERROR, /* 1: R/W Error */
RES_WRPRT, /* 2: Write Protected */
RES_NOTRDY, /* 3: Not Ready */
RES_PARERR /* 4: Invalid Parameter */
} DRESULT;
Function Documentation
Definition at line 386 of file diskio.c.
{
#pragma diag_suppress=Pe550
BYTE n, ty, cmd, buf[4];
UINT tmr;
DSTATUS s;
INIT_PORT(); /* Initialize control port */
s = disk_status(drv); /* Check if card is in the socket */
if (s & STA_NODISK){
return ( s) ;
}
CS_H();
for (n = 10; n; n--){rcvr_mmc(buf, 1); /* 80 dummy clocks */
}
ty = 0;
rcvr_mmc(buf, 4); /* Get trailing return value of R7 resp */
if (buf[2] == 0x01 && buf[3] == 0xAA){ /* The card can work at vdd range of 2.7-3.6V */
for (tmr = 1000; tmr; tmr--)
{ /* Wait for leaving idle state (ACMD41 with HCS bit) */
if (send_cmd(ACMD41, 1UL << 30) == 0){
break;
}
DLY_US(1000);
}
rcvr_mmc(buf, 4);
}
}
} else { /* SDv1 or MMCv3 */
if (send_cmd(ACMD41, 0) <= 1){
} else {
}
for (tmr = 1000; tmr; tmr--)
{ /* Wait for leaving idle state */
if (send_cmd(ACMD41, 0) == 0){
break;
}
DLY_US(1000);
}
ty = 0;
}
}
}
CardType = ty;
deselect();
if (ty){ /* Initialization succeded */
FAST_MODE();
s &= ~STA_NOINIT;
} else { /* Initialization failed */
s |= STA_NOINIT;
}
Stat = s;
return (s);
}
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Definition at line 461 of file diskio.c.
{
DSTATUS s;
s = disk_status(drv);
if (s & STA_NOINIT){
return ( RES_NOTRDY) ;
}
if (!count){
return ( RES_PARERR) ;
}
if (!(CardType & CT_BLOCK)){
sector *= 512; /* Convert LBA to byte address if needed */
}
if (count == 1){ /* Single block read */
&& rcvr_datablock(buff, 512)){
count = 0;
}
} else { /* Multiple block read */
do {
if (!rcvr_datablock(buff, 512)){
break;
}
buff += 512;
} while (--count);
send_cmd(CMD12, 0); /* STOP_TRANSMISSION */
}
}
deselect();
}
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Definition at line 301 of file diskio.c.
{
DSTATUS s = Stat;
if (drv || !INS){
s = STA_NODISK | STA_NOINIT;
} else {
s &= ~STA_NODISK;
if (WP){
s |= STA_PROTECT;
} else {
s &= ~STA_PROTECT;
}
}
Stat = s;
return (s);
}
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