Jksoft Blue mbed Board Developer / Mbed 2 deprecated JBB_WavePlayer_test

microSDカードからWaveファイルを再生するサンプルです。

Dependencies:   mbed FATFileSystem

SDFileSystem/FATFileSystem/ChaN/diskio.cpp@0:e9f196d85a46, 2014-05-12 (annotated)

Committer:
jksoft
Date:
Mon May 12 14:45:42 2014 +0000
Revision:
0:e9f196d85a46
First edition

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jksoft 0:e9f196d85a46 1 /*-----------------------------------------------------------------------*/
jksoft 0:e9f196d85a46 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
jksoft 0:e9f196d85a46 3 /*-----------------------------------------------------------------------*/
jksoft 0:e9f196d85a46 4 /* This is a stub disk I/O module that acts as front end of the existing */
jksoft 0:e9f196d85a46 5 /* disk I/O modules and attach it to FatFs module with common interface. */
jksoft 0:e9f196d85a46 6 /*-----------------------------------------------------------------------*/
jksoft 0:e9f196d85a46 7 #include "ffconf.h"
jksoft 0:e9f196d85a46 8 #include "diskio.h"
jksoft 0:e9f196d85a46 9
jksoft 0:e9f196d85a46 10 //#include "mbed_debug.h"
jksoft 0:e9f196d85a46 11 #include "FATFileSystem.h"
jksoft 0:e9f196d85a46 12
jksoft 0:e9f196d85a46 13 using namespace mbed;
jksoft 0:e9f196d85a46 14
jksoft 0:e9f196d85a46 15 DSTATUS disk_initialize (
jksoft 0:e9f196d85a46 16 BYTE drv /* Physical drive nmuber (0..) */
jksoft 0:e9f196d85a46 17 )
jksoft 0:e9f196d85a46 18 {
jksoft 0:e9f196d85a46 19 //debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
jksoft 0:e9f196d85a46 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
jksoft 0:e9f196d85a46 21 }
jksoft 0:e9f196d85a46 22
jksoft 0:e9f196d85a46 23 DSTATUS disk_status (
jksoft 0:e9f196d85a46 24 BYTE drv /* Physical drive nmuber (0..) */
jksoft 0:e9f196d85a46 25 )
jksoft 0:e9f196d85a46 26 {
jksoft 0:e9f196d85a46 27 //debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
jksoft 0:e9f196d85a46 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
jksoft 0:e9f196d85a46 29 }
jksoft 0:e9f196d85a46 30
jksoft 0:e9f196d85a46 31 DRESULT disk_read (
jksoft 0:e9f196d85a46 32 BYTE drv, /* Physical drive nmuber (0..) */
jksoft 0:e9f196d85a46 33 BYTE *buff, /* Data buffer to store read data */
jksoft 0:e9f196d85a46 34 DWORD sector, /* Sector address (LBA) */
jksoft 0:e9f196d85a46 35 BYTE count /* Number of sectors to read (1..255) */
jksoft 0:e9f196d85a46 36 )
jksoft 0:e9f196d85a46 37 {
jksoft 0:e9f196d85a46 38 // debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
jksoft 0:e9f196d85a46 39 for(DWORD s=sector; s<sector+count; s++) {
jksoft 0:e9f196d85a46 40 // debug_if(FFS_DBG, " disk_read(sector %d)\n", s);
jksoft 0:e9f196d85a46 41 int res = FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, s);
jksoft 0:e9f196d85a46 42 if(res) {
jksoft 0:e9f196d85a46 43 return RES_PARERR;
jksoft 0:e9f196d85a46 44 }
jksoft 0:e9f196d85a46 45 buff += 512;
jksoft 0:e9f196d85a46 46 }
jksoft 0:e9f196d85a46 47 return RES_OK;
jksoft 0:e9f196d85a46 48 }
jksoft 0:e9f196d85a46 49
jksoft 0:e9f196d85a46 50 #if _READONLY == 0
jksoft 0:e9f196d85a46 51 DRESULT disk_write (
jksoft 0:e9f196d85a46 52 BYTE drv, /* Physical drive nmuber (0..) */
jksoft 0:e9f196d85a46 53 const BYTE *buff, /* Data to be written */
jksoft 0:e9f196d85a46 54 DWORD sector, /* Sector address (LBA) */
jksoft 0:e9f196d85a46 55 BYTE count /* Number of sectors to write (1..255) */
jksoft 0:e9f196d85a46 56 )
jksoft 0:e9f196d85a46 57 {
jksoft 0:e9f196d85a46 58 //debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
jksoft 0:e9f196d85a46 59 for(DWORD s = sector; s < sector + count; s++) {
jksoft 0:e9f196d85a46 60 //debug_if(FFS_DBG, " disk_write(sector %d)\n", s);
jksoft 0:e9f196d85a46 61 int res = FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, s);
jksoft 0:e9f196d85a46 62 if(res) {
jksoft 0:e9f196d85a46 63 return RES_PARERR;
jksoft 0:e9f196d85a46 64 }
jksoft 0:e9f196d85a46 65 buff += 512;
jksoft 0:e9f196d85a46 66 }
jksoft 0:e9f196d85a46 67 return RES_OK;
jksoft 0:e9f196d85a46 68 }
jksoft 0:e9f196d85a46 69 #endif /* _READONLY */
jksoft 0:e9f196d85a46 70
jksoft 0:e9f196d85a46 71 DRESULT disk_ioctl (
jksoft 0:e9f196d85a46 72 BYTE drv, /* Physical drive nmuber (0..) */
jksoft 0:e9f196d85a46 73 BYTE ctrl, /* Control code */
jksoft 0:e9f196d85a46 74 void *buff /* Buffer to send/receive control data */
jksoft 0:e9f196d85a46 75 )
jksoft 0:e9f196d85a46 76 {
jksoft 0:e9f196d85a46 77 //debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
jksoft 0:e9f196d85a46 78 switch(ctrl) {
jksoft 0:e9f196d85a46 79 case CTRL_SYNC:
jksoft 0:e9f196d85a46 80 if(FATFileSystem::_ffs[drv] == NULL) {
jksoft 0:e9f196d85a46 81 return RES_NOTRDY;
jksoft 0:e9f196d85a46 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
jksoft 0:e9f196d85a46 83 return RES_ERROR;
jksoft 0:e9f196d85a46 84 }
jksoft 0:e9f196d85a46 85 return RES_OK;
jksoft 0:e9f196d85a46 86 case GET_SECTOR_COUNT:
jksoft 0:e9f196d85a46 87 if(FATFileSystem::_ffs[drv] == NULL) {
jksoft 0:e9f196d85a46 88 return RES_NOTRDY;
jksoft 0:e9f196d85a46 89 } else {
jksoft 0:e9f196d85a46 90 DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
jksoft 0:e9f196d85a46 91 if(res > 0) {
jksoft 0:e9f196d85a46 92 *((DWORD*)buff) = res; // minimum allowed
jksoft 0:e9f196d85a46 93 return RES_OK;
jksoft 0:e9f196d85a46 94 } else {
jksoft 0:e9f196d85a46 95 return RES_ERROR;
jksoft 0:e9f196d85a46 96 }
jksoft 0:e9f196d85a46 97 }
jksoft 0:e9f196d85a46 98 case GET_BLOCK_SIZE:
jksoft 0:e9f196d85a46 99 *((DWORD*)buff) = 1; // default when not known
jksoft 0:e9f196d85a46 100 return RES_OK;
jksoft 0:e9f196d85a46 101
jksoft 0:e9f196d85a46 102 }
jksoft 0:e9f196d85a46 103 return RES_PARERR;
jksoft 0:e9f196d85a46 104 }