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/FATFileHandle.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 /* mbed Microcontroller Library
va009039 0:39eb4d5b97df 2 * Copyright (c) 2006-2012 ARM Limited
va009039 0:39eb4d5b97df 3 *
va009039 0:39eb4d5b97df 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
va009039 0:39eb4d5b97df 5 * of this software and associated documentation files (the "Software"), to deal
va009039 0:39eb4d5b97df 6 * in the Software without restriction, including without limitation the rights
va009039 0:39eb4d5b97df 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
va009039 0:39eb4d5b97df 8 * copies of the Software, and to permit persons to whom the Software is
va009039 0:39eb4d5b97df 9 * furnished to do so, subject to the following conditions:
va009039 0:39eb4d5b97df 10 *
va009039 0:39eb4d5b97df 11 * The above copyright notice and this permission notice shall be included in
va009039 0:39eb4d5b97df 12 * all copies or substantial portions of the Software.
va009039 0:39eb4d5b97df 13 *
va009039 0:39eb4d5b97df 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
va009039 0:39eb4d5b97df 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
va009039 0:39eb4d5b97df 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
va009039 0:39eb4d5b97df 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
va009039 0:39eb4d5b97df 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
va009039 0:39eb4d5b97df 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
va009039 0:39eb4d5b97df 20 * SOFTWARE.
va009039 0:39eb4d5b97df 21 */
va009039 0:39eb4d5b97df 22 #include "ff.h"
va009039 0:39eb4d5b97df 23 #include "ffconf.h"
va009039 0:39eb4d5b97df 24 #include "mbed_debug.h"
va009039 0:39eb4d5b97df 25
va009039 0:39eb4d5b97df 26 #include "FATFileHandle.h"
va009039 0:39eb4d5b97df 27
va009039 0:39eb4d5b97df 28 FATFileHandle::FATFileHandle(FIL fh) {
va009039 0:39eb4d5b97df 29 _fh = fh;
va009039 0:39eb4d5b97df 30 }
va009039 0:39eb4d5b97df 31
va009039 0:39eb4d5b97df 32 int FATFileHandle::close() {
va009039 0:39eb4d5b97df 33 int retval = f_close(&_fh);
va009039 0:39eb4d5b97df 34 delete this;
va009039 0:39eb4d5b97df 35 return retval;
va009039 0:39eb4d5b97df 36 }
va009039 0:39eb4d5b97df 37
va009039 0:39eb4d5b97df 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
va009039 0:39eb4d5b97df 39 UINT n;
va009039 0:39eb4d5b97df 40 FRESULT res = f_write(&_fh, buffer, length, &n);
va009039 0:39eb4d5b97df 41 if (res) {
va009039 0:39eb4d5b97df 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
va009039 0:39eb4d5b97df 43 return -1;
va009039 0:39eb4d5b97df 44 }
va009039 0:39eb4d5b97df 45 return n;
va009039 0:39eb4d5b97df 46 }
va009039 0:39eb4d5b97df 47
va009039 0:39eb4d5b97df 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
va009039 0:39eb4d5b97df 49 debug_if(FFS_DBG, "read(%d)\n", length);
va009039 0:39eb4d5b97df 50 UINT n;
va009039 0:39eb4d5b97df 51 FRESULT res = f_read(&_fh, buffer, length, &n);
va009039 0:39eb4d5b97df 52 if (res) {
va009039 0:39eb4d5b97df 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
va009039 0:39eb4d5b97df 54 return -1;
va009039 0:39eb4d5b97df 55 }
va009039 0:39eb4d5b97df 56 return n;
va009039 0:39eb4d5b97df 57 }
va009039 0:39eb4d5b97df 58
va009039 0:39eb4d5b97df 59 int FATFileHandle::isatty() {
va009039 0:39eb4d5b97df 60 return 0;
va009039 0:39eb4d5b97df 61 }
va009039 0:39eb4d5b97df 62
va009039 0:39eb4d5b97df 63 off_t FATFileHandle::lseek(off_t position, int whence) {
va009039 0:39eb4d5b97df 64 if (whence == SEEK_END) {
va009039 0:39eb4d5b97df 65 position += _fh.fsize;
va009039 0:39eb4d5b97df 66 } else if(whence==SEEK_CUR) {
va009039 0:39eb4d5b97df 67 position += _fh.fptr;
va009039 0:39eb4d5b97df 68 }
va009039 0:39eb4d5b97df 69 FRESULT res = f_lseek(&_fh, position);
va009039 0:39eb4d5b97df 70 if (res) {
va009039 0:39eb4d5b97df 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
va009039 0:39eb4d5b97df 72 return -1;
va009039 0:39eb4d5b97df 73 } else {
va009039 0:39eb4d5b97df 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
va009039 0:39eb4d5b97df 75 return _fh.fptr;
va009039 0:39eb4d5b97df 76 }
va009039 0:39eb4d5b97df 77 }
va009039 0:39eb4d5b97df 78
va009039 0:39eb4d5b97df 79 int FATFileHandle::fsync() {
va009039 0:39eb4d5b97df 80 FRESULT res = f_sync(&_fh);
va009039 0:39eb4d5b97df 81 if (res) {
va009039 0:39eb4d5b97df 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
va009039 0:39eb4d5b97df 83 return -1;
va009039 0:39eb4d5b97df 84 }
va009039 0:39eb4d5b97df 85 return 0;
va009039 0:39eb4d5b97df 86 }
va009039 0:39eb4d5b97df 87
va009039 0:39eb4d5b97df 88 off_t FATFileHandle::flen() {
va009039 0:39eb4d5b97df 89 return _fh.fsize;
va009039 0:39eb4d5b97df 90 }