Norimasa Okamoto / USBLocalFileSystem

Emulation of LocalFileSystem with virtual COM.

Dependencies:   USBDevice

Dependents:   KL46Z-lpc81isp lpcterm2 

#include "USBLocalFileSystem.h"

int main() {
    USBLocalFileSystem* usb_local = new USBLocalFileSystem(); // RamDisk(64KB)

    while(1) {
        usb_local->lock(true);
        usb_local->remount();
        char filename[32];
        if (usb_local->find(filename, sizeof(filename), "*.TXT")) {
            FILE* fp = fopen(filename, "r");
            if (fp) {
                int c;
                while((c = fgetc(fp)) != EOF) {
                    usb_local->putc(c);
                }
                fclose(fp);
            }
        }    
        usb_local->lock(false);

        wait_ms(1000*5);
    }
}



Sample application：

Import programKL46Z-lpc81isp

ISP example program.

Last commit 04 May 2014 by Norimasa Okamoto

Import programlpcterm2

semihost server example program

Last commit 22 Jun 2014 by Norimasa Okamoto

fat/ChaN/diskio.cpp@6:528036abfb02, 2014-06-21 (annotated)

Committer:
va009039
Date:
Sat Jun 21 22:39:59 2014 +0000
Revision:
6:528036abfb02
Parent:
0:39eb4d5b97df 
add LPC11U68

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:39eb4d5b97df 1 /*-----------------------------------------------------------------------*/
va009039 0:39eb4d5b97df 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
va009039 0:39eb4d5b97df 3 /*-----------------------------------------------------------------------*/
va009039 0:39eb4d5b97df 4 /* This is a stub disk I/O module that acts as front end of the existing */
va009039 0:39eb4d5b97df 5 /* disk I/O modules and attach it to FatFs module with common interface. */
va009039 0:39eb4d5b97df 6 /*-----------------------------------------------------------------------*/
va009039 0:39eb4d5b97df 7 #include "ffconf.h"
va009039 0:39eb4d5b97df 8 #include "diskio.h"
va009039 0:39eb4d5b97df 9
va009039 0:39eb4d5b97df 10 #include "mbed_debug.h"
va009039 0:39eb4d5b97df 11 #include "FATFileSystem.h"
va009039 0:39eb4d5b97df 12
va009039 0:39eb4d5b97df 13 using namespace mbed;
va009039 0:39eb4d5b97df 14
va009039 0:39eb4d5b97df 15 DSTATUS disk_initialize (
va009039 0:39eb4d5b97df 16 BYTE drv /* Physical drive nmuber (0..) */
va009039 0:39eb4d5b97df 17 )
va009039 0:39eb4d5b97df 18 {
va009039 0:39eb4d5b97df 19 debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
va009039 0:39eb4d5b97df 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
va009039 0:39eb4d5b97df 21 }
va009039 0:39eb4d5b97df 22
va009039 0:39eb4d5b97df 23 DSTATUS disk_status (
va009039 0:39eb4d5b97df 24 BYTE drv /* Physical drive nmuber (0..) */
va009039 0:39eb4d5b97df 25 )
va009039 0:39eb4d5b97df 26 {
va009039 0:39eb4d5b97df 27 debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
va009039 0:39eb4d5b97df 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
va009039 0:39eb4d5b97df 29 }
va009039 0:39eb4d5b97df 30
va009039 0:39eb4d5b97df 31 DRESULT disk_read (
va009039 0:39eb4d5b97df 32 BYTE drv, /* Physical drive nmuber (0..) */
va009039 0:39eb4d5b97df 33 BYTE *buff, /* Data buffer to store read data */
va009039 0:39eb4d5b97df 34 DWORD sector, /* Sector address (LBA) */
va009039 0:39eb4d5b97df 35 BYTE count /* Number of sectors to read (1..255) */
va009039 0:39eb4d5b97df 36 )
va009039 0:39eb4d5b97df 37 {
va009039 0:39eb4d5b97df 38 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
va009039 0:39eb4d5b97df 39 for(DWORD s=sector; s<sector+count; s++) {
va009039 0:39eb4d5b97df 40 debug_if(FFS_DBG, " disk_read(sector %d)\n", s);
va009039 0:39eb4d5b97df 41 int res = FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, s);
va009039 0:39eb4d5b97df 42 if(res) {
va009039 0:39eb4d5b97df 43 return RES_PARERR;
va009039 0:39eb4d5b97df 44 }
va009039 0:39eb4d5b97df 45 buff += 512;
va009039 0:39eb4d5b97df 46 }
va009039 0:39eb4d5b97df 47 return RES_OK;
va009039 0:39eb4d5b97df 48 }
va009039 0:39eb4d5b97df 49
va009039 0:39eb4d5b97df 50 #if _READONLY == 0
va009039 0:39eb4d5b97df 51 DRESULT disk_write (
va009039 0:39eb4d5b97df 52 BYTE drv, /* Physical drive nmuber (0..) */
va009039 0:39eb4d5b97df 53 const BYTE *buff, /* Data to be written */
va009039 0:39eb4d5b97df 54 DWORD sector, /* Sector address (LBA) */
va009039 0:39eb4d5b97df 55 BYTE count /* Number of sectors to write (1..255) */
va009039 0:39eb4d5b97df 56 )
va009039 0:39eb4d5b97df 57 {
va009039 0:39eb4d5b97df 58 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
va009039 0:39eb4d5b97df 59 for(DWORD s = sector; s < sector + count; s++) {
va009039 0:39eb4d5b97df 60 debug_if(FFS_DBG, " disk_write(sector %d)\n", s);
va009039 0:39eb4d5b97df 61 int res = FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, s);
va009039 0:39eb4d5b97df 62 if(res) {
va009039 0:39eb4d5b97df 63 return RES_PARERR;
va009039 0:39eb4d5b97df 64 }
va009039 0:39eb4d5b97df 65 buff += 512;
va009039 0:39eb4d5b97df 66 }
va009039 0:39eb4d5b97df 67 return RES_OK;
va009039 0:39eb4d5b97df 68 }
va009039 0:39eb4d5b97df 69 #endif /* _READONLY */
va009039 0:39eb4d5b97df 70
va009039 0:39eb4d5b97df 71 DRESULT disk_ioctl (
va009039 0:39eb4d5b97df 72 BYTE drv, /* Physical drive nmuber (0..) */
va009039 0:39eb4d5b97df 73 BYTE ctrl, /* Control code */
va009039 0:39eb4d5b97df 74 void *buff /* Buffer to send/receive control data */
va009039 0:39eb4d5b97df 75 )
va009039 0:39eb4d5b97df 76 {
va009039 0:39eb4d5b97df 77 debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
va009039 0:39eb4d5b97df 78 switch(ctrl) {
va009039 0:39eb4d5b97df 79 case CTRL_SYNC:
va009039 0:39eb4d5b97df 80 if(FATFileSystem::_ffs[drv] == NULL) {
va009039 0:39eb4d5b97df 81 return RES_NOTRDY;
va009039 0:39eb4d5b97df 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
va009039 0:39eb4d5b97df 83 return RES_ERROR;
va009039 0:39eb4d5b97df 84 }
va009039 0:39eb4d5b97df 85 return RES_OK;
va009039 0:39eb4d5b97df 86 case GET_SECTOR_COUNT:
va009039 0:39eb4d5b97df 87 if(FATFileSystem::_ffs[drv] == NULL) {
va009039 0:39eb4d5b97df 88 return RES_NOTRDY;
va009039 0:39eb4d5b97df 89 } else {
va009039 0:39eb4d5b97df 90 DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
va009039 0:39eb4d5b97df 91 if(res > 0) {
va009039 0:39eb4d5b97df 92 *((DWORD*)buff) = res; // minimum allowed
va009039 0:39eb4d5b97df 93 return RES_OK;
va009039 0:39eb4d5b97df 94 } else {
va009039 0:39eb4d5b97df 95 return RES_ERROR;
va009039 0:39eb4d5b97df 96 }
va009039 0:39eb4d5b97df 97 }
va009039 0:39eb4d5b97df 98 case GET_BLOCK_SIZE:
va009039 0:39eb4d5b97df 99 *((DWORD*)buff) = 1; // default when not known
va009039 0:39eb4d5b97df 100 return RES_OK;
va009039 0:39eb4d5b97df 101
va009039 0:39eb4d5b97df 102 }
va009039 0:39eb4d5b97df 103 return RES_PARERR;
va009039 0:39eb4d5b97df 104 }