131 lines
3.2 KiB
C
131 lines
3.2 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include "tos_ff.h" /* Obtains integer types */
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#include "tos_diskio.h" /* Declarations of disk functions */
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DSTATUS tos_disk_status (
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vfs_inode_t *dev
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)
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{
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vfs_blkdev_geo_t geo;
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if (!dev || !dev->ops.bd_ops->geometry) {
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return STA_NODISK;
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}
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if (dev->ops.bd_ops->geometry(dev, &geo) != 0) {
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return STA_NOINIT;
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}
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if (!geo.is_available) {
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return STA_NOINIT;
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}
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS tos_disk_initialize (
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vfs_inode_t *dev
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)
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{
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if (!dev || !dev->ops.bd_ops->open) {
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return STA_NODISK;
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}
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if (dev->ops.bd_ops->open(dev) != 0) {
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return STA_NOINIT;
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}
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT tos_disk_read (
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vfs_inode_t *dev,
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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if (!dev || !dev->ops.bd_ops->read) {
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return RES_PARERR;
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}
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if (dev->ops.bd_ops->read(dev, buff, sector, count) != 0) {
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return RES_ERROR;
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}
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return RES_OK;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if FF_FS_READONLY == 0
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DRESULT tos_disk_write (
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vfs_inode_t *dev,
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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if (!dev || !dev->ops.bd_ops->write) {
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return RES_PARERR;
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}
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if (dev->ops.bd_ops->write(dev, buff, sector, count) != 0) {
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return RES_ERROR;
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}
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return RES_OK;
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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DRESULT tos_disk_ioctl (
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vfs_inode_t *dev,
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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if (!dev || !dev->ops.bd_ops->ioctl) {
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return RES_PARERR;
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}
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if (dev->ops.bd_ops->ioctl(dev, cmd, (unsigned long)buff) != 0) {
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return RES_ERROR;
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}
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return RES_OK;
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}
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