120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
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/*-----------------------------------------------------------------------*/
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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 "ff.h" /* Obtains integer types */
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#include "diskio.h" /* FatFs lower layer API */
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#include "sdcard.h"
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static DSTATUS m_status = STA_NOINIT;
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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return m_status;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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int result;
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if (platform_sdcard_init( 1, pdrv )) {
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m_status &= ~STA_NOINIT;
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}
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return m_status;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Sector address 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 (count == 1) {
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if (! platform_sdcard_read_block( pdrv, sector, buff )) {
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return RES_ERROR;
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}
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} else {
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if (! platform_sdcard_read_blocks( pdrv, sector, count, buff )) {
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return RES_ERROR;
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}
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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 disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Sector address 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 (count == 1) {
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if (! platform_sdcard_write_block( pdrv, sector, buff )) {
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return RES_ERROR;
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}
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} else {
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if (! platform_sdcard_write_blocks( pdrv, sector, count, buff )) {
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return RES_ERROR;
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}
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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 disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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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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switch (cmd) {
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case CTRL_TRIM: /* no-op */
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case CTRL_SYNC: /* no-op */
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return RES_OK;
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default: /* anything else throws parameter error */
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return RES_PARERR;
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}
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}
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