FFT LED Display / 4180_EditThis_copy_Demo_Test

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Dependencies:   FFT

FATFileSystem/ChaN/diskio.cpp@11:951bbb0385aa, 2020-12-04 (annotated)

Committer:
dimitryjl23
Date:
Fri Dec 04 18:01:22 2020 +0000
Revision:
11:951bbb0385aa
Parent:
0:d6c9b09b4042 
Final :)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
annieluo2 0:d6c9b09b4042 3 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 4 /* If a working storage control module is available, it should be */
annieluo2 0:d6c9b09b4042 5 /* attached to the FatFs via a glue function rather than modifying it. */
annieluo2 0:d6c9b09b4042 6 /* This is an example of glue functions to attach various exsisting */
annieluo2 0:d6c9b09b4042 7 /* storage control modules to the FatFs module with a defined API. */
annieluo2 0:d6c9b09b4042 8 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 9
annieluo2 0:d6c9b09b4042 10 #include "diskio.h"
annieluo2 0:d6c9b09b4042 11 #include "mbed_debug.h"
annieluo2 0:d6c9b09b4042 12 #include "FATFileSystem.h"
annieluo2 0:d6c9b09b4042 13
annieluo2 0:d6c9b09b4042 14 using namespace mbed;
annieluo2 0:d6c9b09b4042 15
annieluo2 0:d6c9b09b4042 16 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 17 /* Get Drive Status */
annieluo2 0:d6c9b09b4042 18 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 19
annieluo2 0:d6c9b09b4042 20 DSTATUS disk_status (
annieluo2 0:d6c9b09b4042 21 BYTE pdrv /* Physical drive nmuber to identify the drive */
annieluo2 0:d6c9b09b4042 22 )
annieluo2 0:d6c9b09b4042 23 {
annieluo2 0:d6c9b09b4042 24 debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv);
annieluo2 0:d6c9b09b4042 25 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status();
annieluo2 0:d6c9b09b4042 26 }
annieluo2 0:d6c9b09b4042 27
annieluo2 0:d6c9b09b4042 28 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 29 /* Inidialize a Drive */
annieluo2 0:d6c9b09b4042 30 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 31
annieluo2 0:d6c9b09b4042 32 DSTATUS disk_initialize (
annieluo2 0:d6c9b09b4042 33 BYTE pdrv /* Physical drive nmuber to identify the drive */
annieluo2 0:d6c9b09b4042 34 )
annieluo2 0:d6c9b09b4042 35 {
annieluo2 0:d6c9b09b4042 36 debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv);
annieluo2 0:d6c9b09b4042 37 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize();
annieluo2 0:d6c9b09b4042 38 }
annieluo2 0:d6c9b09b4042 39
annieluo2 0:d6c9b09b4042 40 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 41 /* Read Sector(s) */
annieluo2 0:d6c9b09b4042 42 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 43
annieluo2 0:d6c9b09b4042 44 DRESULT disk_read (
annieluo2 0:d6c9b09b4042 45 BYTE pdrv, /* Physical drive nmuber to identify the drive */
annieluo2 0:d6c9b09b4042 46 BYTE* buff, /* Data buffer to store read data */
annieluo2 0:d6c9b09b4042 47 DWORD sector, /* Sector address in LBA */
annieluo2 0:d6c9b09b4042 48 UINT count /* Number of sectors to read */
annieluo2 0:d6c9b09b4042 49 )
annieluo2 0:d6c9b09b4042 50 {
annieluo2 0:d6c9b09b4042 51 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
annieluo2 0:d6c9b09b4042 52 if (FATFileSystem::_ffs[pdrv]->disk_read((uint8_t*)buff, sector, count))
annieluo2 0:d6c9b09b4042 53 return RES_PARERR;
annieluo2 0:d6c9b09b4042 54 else
annieluo2 0:d6c9b09b4042 55 return RES_OK;
annieluo2 0:d6c9b09b4042 56 }
annieluo2 0:d6c9b09b4042 57
annieluo2 0:d6c9b09b4042 58 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 59 /* Write Sector(s) */
annieluo2 0:d6c9b09b4042 60 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 61
annieluo2 0:d6c9b09b4042 62 #if _USE_WRITE
annieluo2 0:d6c9b09b4042 63 DRESULT disk_write (
annieluo2 0:d6c9b09b4042 64 BYTE pdrv, /* Physical drive nmuber to identify the drive */
annieluo2 0:d6c9b09b4042 65 const BYTE* buff, /* Data to be written */
annieluo2 0:d6c9b09b4042 66 DWORD sector, /* Sector address in LBA */
annieluo2 0:d6c9b09b4042 67 UINT count /* Number of sectors to write */
annieluo2 0:d6c9b09b4042 68 )
annieluo2 0:d6c9b09b4042 69 {
annieluo2 0:d6c9b09b4042 70 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
annieluo2 0:d6c9b09b4042 71 if (FATFileSystem::_ffs[pdrv]->disk_write((uint8_t*)buff, sector, count))
annieluo2 0:d6c9b09b4042 72 return RES_PARERR;
annieluo2 0:d6c9b09b4042 73 else
annieluo2 0:d6c9b09b4042 74 return RES_OK;
annieluo2 0:d6c9b09b4042 75 }
annieluo2 0:d6c9b09b4042 76 #endif
annieluo2 0:d6c9b09b4042 77
annieluo2 0:d6c9b09b4042 78 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 79 /* Miscellaneous Functions */
annieluo2 0:d6c9b09b4042 80 /*-----------------------------------------------------------------------*/
annieluo2 0:d6c9b09b4042 81
annieluo2 0:d6c9b09b4042 82 #if _USE_IOCTL
annieluo2 0:d6c9b09b4042 83 DRESULT disk_ioctl (
annieluo2 0:d6c9b09b4042 84 BYTE pdrv, /* Physical drive nmuber (0..) */
annieluo2 0:d6c9b09b4042 85 BYTE cmd, /* Control code */
annieluo2 0:d6c9b09b4042 86 void* buff /* Buffer to send/receive control data */
annieluo2 0:d6c9b09b4042 87 )
annieluo2 0:d6c9b09b4042 88 {
annieluo2 0:d6c9b09b4042 89 debug_if(FFS_DBG, "disk_ioctl(%d)\n", cmd);
annieluo2 0:d6c9b09b4042 90 switch(cmd) {
annieluo2 0:d6c9b09b4042 91 case CTRL_SYNC:
annieluo2 0:d6c9b09b4042 92 if(FATFileSystem::_ffs[pdrv] == NULL) {
annieluo2 0:d6c9b09b4042 93 return RES_NOTRDY;
annieluo2 0:d6c9b09b4042 94 } else if(FATFileSystem::_ffs[pdrv]->disk_sync()) {
annieluo2 0:d6c9b09b4042 95 return RES_ERROR;
annieluo2 0:d6c9b09b4042 96 }
annieluo2 0:d6c9b09b4042 97 return RES_OK;
annieluo2 0:d6c9b09b4042 98 case GET_SECTOR_COUNT:
annieluo2 0:d6c9b09b4042 99 if(FATFileSystem::_ffs[pdrv] == NULL) {
annieluo2 0:d6c9b09b4042 100 return RES_NOTRDY;
annieluo2 0:d6c9b09b4042 101 } else {
annieluo2 0:d6c9b09b4042 102 DWORD res = FATFileSystem::_ffs[pdrv]->disk_sectors();
annieluo2 0:d6c9b09b4042 103 if(res > 0) {
annieluo2 0:d6c9b09b4042 104 *((DWORD*)buff) = res; // minimum allowed
annieluo2 0:d6c9b09b4042 105 return RES_OK;
annieluo2 0:d6c9b09b4042 106 } else {
annieluo2 0:d6c9b09b4042 107 return RES_ERROR;
annieluo2 0:d6c9b09b4042 108 }
annieluo2 0:d6c9b09b4042 109 }
annieluo2 0:d6c9b09b4042 110 case GET_BLOCK_SIZE:
annieluo2 0:d6c9b09b4042 111 *((DWORD*)buff) = 1; // default when not known
annieluo2 0:d6c9b09b4042 112 return RES_OK;
annieluo2 0:d6c9b09b4042 113
annieluo2 0:d6c9b09b4042 114 }
annieluo2 0:d6c9b09b4042 115 return RES_PARERR;
annieluo2 0:d6c9b09b4042 116 }
annieluo2 0:d6c9b09b4042 117 #endif