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Initial commit: TXW82x FPV v2.7.0.7-42229 SDK + project sources

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zouhaitao
2026-07-06 11:30:13 +08:00
commit e76462eeb7
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105
sdk/lib/fs/fatfs/diskio.c Normal file
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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
/*-----------------------------------------------------------------------*/
/* 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 "diskio.h" /* FatFs lower layer API */
/* Definitions of physical drive number for each drive */
#define FATFS_MAX_DRIVE_NUM 4
static struct fatfs_diskio* phys_drive[FATFS_MAX_DRIVE_NUM];
static void* phys_device[FATFS_MAX_DRIVE_NUM];
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status(BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if(pdrv >= FATFS_MAX_DRIVE_NUM || NULL == phys_drive[pdrv] || NULL == phys_drive[pdrv]->status)
return STA_NOINIT;
return (*phys_drive[pdrv]->status)(phys_device[pdrv]);
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize(BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
if(pdrv >= FATFS_MAX_DRIVE_NUM || NULL == phys_drive[pdrv] || NULL == phys_drive[pdrv]->init)
return STA_NOINIT;
return (*phys_drive[pdrv]->init)(phys_device[pdrv]);
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read(BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE* buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
if(pdrv >= FATFS_MAX_DRIVE_NUM || NULL == phys_drive[pdrv] || NULL == phys_drive[pdrv]->read)
return RES_PARERR;
return (*phys_drive[pdrv]->read)(phys_device[pdrv], buff, sector, count);
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_write(BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE* buff, /* Data to be written */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
if(pdrv >= FATFS_MAX_DRIVE_NUM || NULL == phys_drive[pdrv] || NULL == phys_drive[pdrv]->write)
return RES_PARERR;
return (*phys_drive[pdrv]->write)(phys_device[pdrv], (BYTE*)buff, sector, count);
}
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
DRESULT disk_ioctl(BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void* buff /* Buffer to send/receive control data */
)
{
if(pdrv >= FATFS_MAX_DRIVE_NUM || NULL == phys_drive[pdrv] || NULL == phys_drive[pdrv]->ioctl)
return RES_PARERR;
return (*phys_drive[pdrv]->ioctl)(phys_device[pdrv], cmd, buff);
}
void fatfs_register_drive(BYTE pdrv, struct fatfs_diskio* driver, void *device)
{
if(pdrv < FATFS_MAX_DRIVE_NUM) {
phys_drive[pdrv] = driver;
phys_device[pdrv] = device;
}// else
//TEST_INFO_SHOW("Drive Number %d too large", pdrv);
}