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Dependencies:   mbed

SDFileSystem/FATFileSystem/ChaN/diskio.cpp@48:e308067cfea5, 2020-05-19 (annotated)

Committer:
evanso
Date:
Tue May 19 15:13:47 2020 +0000
Revision:
48:e308067cfea5
Added sd card class folder to project folder

Who changed what in which revision?

UserRevisionLine numberNew contents of line
evanso 48:e308067cfea5 1 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
evanso 48:e308067cfea5 3 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 4 /* If a working storage control module is available, it should be */
evanso 48:e308067cfea5 5 /* attached to the FatFs via a glue function rather than modifying it. */
evanso 48:e308067cfea5 6 /* This is an example of glue functions to attach various exsisting */
evanso 48:e308067cfea5 7 /* storage control modules to the FatFs module with a defined API. */
evanso 48:e308067cfea5 8 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 9
evanso 48:e308067cfea5 10 #include "diskio.h"
evanso 48:e308067cfea5 11 #include "mbed_debug.h"
evanso 48:e308067cfea5 12 #include "FATFileSystem.h"
evanso 48:e308067cfea5 13
evanso 48:e308067cfea5 14 using namespace mbed;
evanso 48:e308067cfea5 15
evanso 48:e308067cfea5 16 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 17 /* Get Drive Status */
evanso 48:e308067cfea5 18 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 19
evanso 48:e308067cfea5 20 DSTATUS disk_status (
evanso 48:e308067cfea5 21 BYTE pdrv /* Physical drive nmuber to identify the drive */
evanso 48:e308067cfea5 22 )
evanso 48:e308067cfea5 23 {
evanso 48:e308067cfea5 24 debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv);
evanso 48:e308067cfea5 25 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status();
evanso 48:e308067cfea5 26 }
evanso 48:e308067cfea5 27
evanso 48:e308067cfea5 28 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 29 /* Inidialize a Drive */
evanso 48:e308067cfea5 30 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 31
evanso 48:e308067cfea5 32 DSTATUS disk_initialize (
evanso 48:e308067cfea5 33 BYTE pdrv /* Physical drive nmuber to identify the drive */
evanso 48:e308067cfea5 34 )
evanso 48:e308067cfea5 35 {
evanso 48:e308067cfea5 36 debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv);
evanso 48:e308067cfea5 37 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize();
evanso 48:e308067cfea5 38 }
evanso 48:e308067cfea5 39
evanso 48:e308067cfea5 40 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 41 /* Read Sector(s) */
evanso 48:e308067cfea5 42 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 43
evanso 48:e308067cfea5 44 DRESULT disk_read (
evanso 48:e308067cfea5 45 BYTE pdrv, /* Physical drive nmuber to identify the drive */
evanso 48:e308067cfea5 46 BYTE* buff, /* Data buffer to store read data */
evanso 48:e308067cfea5 47 DWORD sector, /* Sector address in LBA */
evanso 48:e308067cfea5 48 UINT count /* Number of sectors to read */
evanso 48:e308067cfea5 49 )
evanso 48:e308067cfea5 50 {
evanso 48:e308067cfea5 51 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
evanso 48:e308067cfea5 52 if (FATFileSystem::_ffs[pdrv]->disk_read((uint8_t*)buff, sector, count))
evanso 48:e308067cfea5 53 return RES_PARERR;
evanso 48:e308067cfea5 54 else
evanso 48:e308067cfea5 55 return RES_OK;
evanso 48:e308067cfea5 56 }
evanso 48:e308067cfea5 57
evanso 48:e308067cfea5 58 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 59 /* Write Sector(s) */
evanso 48:e308067cfea5 60 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 61
evanso 48:e308067cfea5 62 #if _USE_WRITE
evanso 48:e308067cfea5 63 DRESULT disk_write (
evanso 48:e308067cfea5 64 BYTE pdrv, /* Physical drive nmuber to identify the drive */
evanso 48:e308067cfea5 65 const BYTE* buff, /* Data to be written */
evanso 48:e308067cfea5 66 DWORD sector, /* Sector address in LBA */
evanso 48:e308067cfea5 67 UINT count /* Number of sectors to write */
evanso 48:e308067cfea5 68 )
evanso 48:e308067cfea5 69 {
evanso 48:e308067cfea5 70 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
evanso 48:e308067cfea5 71 if (FATFileSystem::_ffs[pdrv]->disk_write((uint8_t*)buff, sector, count))
evanso 48:e308067cfea5 72 return RES_PARERR;
evanso 48:e308067cfea5 73 else
evanso 48:e308067cfea5 74 return RES_OK;
evanso 48:e308067cfea5 75 }
evanso 48:e308067cfea5 76 #endif
evanso 48:e308067cfea5 77
evanso 48:e308067cfea5 78 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 79 /* Miscellaneous Functions */
evanso 48:e308067cfea5 80 /*-----------------------------------------------------------------------*/
evanso 48:e308067cfea5 81
evanso 48:e308067cfea5 82 #if _USE_IOCTL
evanso 48:e308067cfea5 83 DRESULT disk_ioctl (
evanso 48:e308067cfea5 84 BYTE pdrv, /* Physical drive nmuber (0..) */
evanso 48:e308067cfea5 85 BYTE cmd, /* Control code */
evanso 48:e308067cfea5 86 void* buff /* Buffer to send/receive control data */
evanso 48:e308067cfea5 87 )
evanso 48:e308067cfea5 88 {
evanso 48:e308067cfea5 89 debug_if(FFS_DBG, "disk_ioctl(%d)\n", cmd);
evanso 48:e308067cfea5 90 switch(cmd) {
evanso 48:e308067cfea5 91 case CTRL_SYNC:
evanso 48:e308067cfea5 92 if(FATFileSystem::_ffs[pdrv] == NULL) {
evanso 48:e308067cfea5 93 return RES_NOTRDY;
evanso 48:e308067cfea5 94 } else if(FATFileSystem::_ffs[pdrv]->disk_sync()) {
evanso 48:e308067cfea5 95 return RES_ERROR;
evanso 48:e308067cfea5 96 }
evanso 48:e308067cfea5 97 return RES_OK;
evanso 48:e308067cfea5 98 case GET_SECTOR_COUNT:
evanso 48:e308067cfea5 99 if(FATFileSystem::_ffs[pdrv] == NULL) {
evanso 48:e308067cfea5 100 return RES_NOTRDY;
evanso 48:e308067cfea5 101 } else {
evanso 48:e308067cfea5 102 DWORD res = FATFileSystem::_ffs[pdrv]->disk_sectors();
evanso 48:e308067cfea5 103 if(res > 0) {
evanso 48:e308067cfea5 104 *((DWORD*)buff) = res; // minimum allowed
evanso 48:e308067cfea5 105 return RES_OK;
evanso 48:e308067cfea5 106 } else {
evanso 48:e308067cfea5 107 return RES_ERROR;
evanso 48:e308067cfea5 108 }
evanso 48:e308067cfea5 109 }
evanso 48:e308067cfea5 110 case GET_BLOCK_SIZE:
evanso 48:e308067cfea5 111 *((DWORD*)buff) = 1; // default when not known
evanso 48:e308067cfea5 112 return RES_OK;
evanso 48:e308067cfea5 113
evanso 48:e308067cfea5 114 }
evanso 48:e308067cfea5 115 return RES_PARERR;
evanso 48:e308067cfea5 116 }
evanso 48:e308067cfea5 117 #endif