Emulation of LocalFileSystem with virtual COM.
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.
Import programlpcterm2
semihost server example program
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?
User | Revision | Line number | New 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 | } |