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

Diff: src/Storage.cpp

Revision:
0:39eb4d5b97df
Child:
4:8f6857784854
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Storage.cpp	Sat May 03 11:21:37 2014 +0000
@@ -0,0 +1,51 @@
+#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;
+}