Diff: FileSystems/RAMFileSystem.h

Revision:

0:6b68dac0d986

Child:

9:a33326afd686

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FileSystems/RAMFileSystem.h	Fri Nov 21 11:42:51 2014 +0000
@@ -0,0 +1,53 @@
+#ifndef RAMFILESYSTEM_H
+#define RAMFILESYSTEM_H
+
+#include "mbed.h"
+#include "FATFileSystem.h"
+#include "sdram.h"
+#include <stdint.h>
+
+/** Creates a FAT file system in SDRAM
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "RAMFileSystem.h"
+ *
+ * RAMFileSystem ramfs(0xA0000000, 4*1024*1024, "ram"); // 4MB of ram starting at 0xA...
+ *  
+ * int main() {
+ *     sdram_init();
+ *
+ *     FILE *fp = fopen("/ram/myfile.txt", "w");
+ *     fprintf(fp, "Hello World!\n");
+ *     fclose(fp);
+ * }
+ * @endcode
+ */
+class RAMFileSystem : public FATFileSystem {
+public:
+
+    /** Create the File System in RAM
+     *
+     * @param addr Start of memory to use for file system
+     * @param size Number of bytes to use for file system
+     * @param name The name used to access the virtual filesystem
+     */
+    RAMFileSystem(uint32_t addr, uint32_t size, const char* name);
+    virtual int disk_initialize();
+    virtual int disk_status();
+    virtual int disk_read(uint8_t * buffer, uint64_t sector, uint8_t count);
+    virtual int disk_write(const uint8_t * buffer, uint64_t sector, uint8_t count);
+    virtual int disk_sync();
+    virtual uint64_t disk_sectors();
+
+    uint64_t disk_size();
+
+protected:
+
+    uint32_t memStart;
+    uint32_t memSize;
+    int status;
+};
+
+#endif
+