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@0:39eb4d5b97df, 2014-05-03 (annotated)

Committer:
va009039
Date:
Sat May 03 11:21:37 2014 +0000
Revision:
0:39eb4d5b97df
Child:
4:8f6857784854
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:39eb4d5b97df 1 #include "Storage.h"
va009039 0:39eb4d5b97df 2 #include "FATFileSystem.h"
va009039 0:39eb4d5b97df 3 #include "mbed_debug.h"
va009039 0:39eb4d5b97df 4 #include "mystring.h"
va009039 0:39eb4d5b97df 5 #include <ctype.h>
va009039 0:39eb4d5b97df 6
va009039 0:39eb4d5b97df 7 #if (DEBUG2 > 3)
va009039 0:39eb4d5b97df 8 #define STORAGE_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);
va009039 0:39eb4d5b97df 9 #else
va009039 0:39eb4d5b97df 10 #define STORAGE_DBG(...)
va009039 0:39eb4d5b97df 11 #endif
va009039 0:39eb4d5b97df 12
va009039 0:39eb4d5b97df 13 #define LOCAL_DIR "local"
va009039 0:39eb4d5b97df 14
va009039 0:39eb4d5b97df 15 LocalStorage::LocalStorage(StorageInterface* storage, const char* name)
va009039 0:39eb4d5b97df 16 : FATFileSystem(name),_storage(storage)
va009039 0:39eb4d5b97df 17 {
va009039 0:39eb4d5b97df 18 _name = name;
va009039 0:39eb4d5b97df 19 }
va009039 0:39eb4d5b97df 20
va009039 0:39eb4d5b97df 21 extern FILINFO FATDirHandle_finfo; // fst/FATDirHandle.cpp
va009039 0:39eb4d5b97df 22 /* static */ bool LocalStorage::find_bin(mystring& filename)
va009039 0:39eb4d5b97df 23 {
va009039 0:39eb4d5b97df 24 DIR *dir = ::opendir("/"LOCAL_DIR);
va009039 0:39eb4d5b97df 25 if (dir == NULL) {
va009039 0:39eb4d5b97df 26 return false;
va009039 0:39eb4d5b97df 27 }
va009039 0:39eb4d5b97df 28 uint32_t fdatetime = 0;
va009039 0:39eb4d5b97df 29 bool found = false;
va009039 0:39eb4d5b97df 30 struct dirent *entry;
va009039 0:39eb4d5b97df 31 while ((entry = readdir(dir)) != NULL) {
va009039 0:39eb4d5b97df 32 mystring name(entry->d_name);
va009039 0:39eb4d5b97df 33 int len = name.size();
va009039 0:39eb4d5b97df 34 if (name[len-4] == '.' &&
va009039 0:39eb4d5b97df 35 toupper(name[len-3]) == 'B' &&
va009039 0:39eb4d5b97df 36 toupper(name[len-2]) == 'I' &&
va009039 0:39eb4d5b97df 37 toupper(name[len-1]) == 'N') {
va009039 0:39eb4d5b97df 38 FILINFO* fi = &FATDirHandle_finfo;
va009039 0:39eb4d5b97df 39 uint32_t datetime = fi->ftime | (fi->fdate<<16);
va009039 0:39eb4d5b97df 40 STORAGE_DBG("datetime=%08x [%s]", datetime, entry->d_name);
va009039 0:39eb4d5b97df 41 if (datetime > fdatetime) {
va009039 0:39eb4d5b97df 42 fdatetime = datetime;
va009039 0:39eb4d5b97df 43 filename = "/"LOCAL_DIR"/";
va009039 0:39eb4d5b97df 44 filename += entry->d_name;
va009039 0:39eb4d5b97df 45 found = true;
va009039 0:39eb4d5b97df 46 }
va009039 0:39eb4d5b97df 47 }
va009039 0:39eb4d5b97df 48 }
va009039 0:39eb4d5b97df 49 closedir(dir);
va009039 0:39eb4d5b97df 50 return found;
va009039 0:39eb4d5b97df 51 }