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

src/Storage.cpp

Committer:
va009039
Date:
2014-05-03
Revision:
0:39eb4d5b97df
Child:
4:8f6857784854

File content as of revision 0:39eb4d5b97df:

#include "Storage.h"
#include "FATFileSystem.h"
#include "mbed_debug.h"
#include "mystring.h"
#include <ctype.h>

#if (DEBUG2 > 3)
#define STORAGE_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);
#else
#define STORAGE_DBG(...)
#endif

#define LOCAL_DIR "local"

LocalStorage::LocalStorage(StorageInterface* storage, const char* name)
        : FATFileSystem(name),_storage(storage)
{
    _name = name;
}

extern FILINFO FATDirHandle_finfo; // fst/FATDirHandle.cpp
/* static */ bool LocalStorage::find_bin(mystring& filename)
{
    DIR *dir = ::opendir("/"LOCAL_DIR);
    if (dir == NULL) {
        return false;
    }
    uint32_t fdatetime = 0;
    bool found = false;
    struct dirent *entry;
    while ((entry = readdir(dir)) != NULL) {
        mystring name(entry->d_name);
        int len = name.size();
        if (name[len-4] == '.' && 
            toupper(name[len-3]) == 'B' &&
            toupper(name[len-2]) == 'I' &&
            toupper(name[len-1]) == 'N') {
            FILINFO* fi = &FATDirHandle_finfo;
            uint32_t datetime =  fi->ftime | (fi->fdate<<16);
            STORAGE_DBG("datetime=%08x [%s]", datetime, entry->d_name);
            if (datetime > fdatetime) {
                fdatetime = datetime;
                filename = "/"LOCAL_DIR"/";
                filename += entry->d_name;
                found = true;
            }
        }
    }
    closedir(dir);
    return found;
}