Dependencies:
FatFileSystem
SDFileSystem.h
- Committer:
- KatsushiOgawa
- Date:
- 2012-06-20
- Revision:
- 0:d496b40b6943
File content as of revision 0:d496b40b6943:
/* mbed SDFileSystem Library, for providing file access to SD cards
* Copyright (c) 2008-2010, sford
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MBED_SDFILESYSTEM_H
#define MBED_SDFILESYSTEM_H
#include "mbed.h"
#include "FATFileSystem.h"
/** Access the filesystem on an SD Card using SPI
*
* @code
* #include "mbed.h"
* #include "SDFileSystem.h"
*
* SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs
*
* int main() {
* FILE *fp = fopen("/sd/myfile.txt", "w");
* fprintf(fp, "Hello World!\n");
* fclose(fp);
* }
*/
class SDFileSystem : public FATFileSystem {
public:
/** Create the File System for accessing an SD Card using SPI
*
* @param mosi SPI mosi pin connected to SD Card
* @param miso SPI miso pin conencted to SD Card
* @param sclk SPI sclk pin connected to SD Card
* @param cs DigitalOut pin used as SD Card chip select
* @param name The name used to access the virtual filesystem
*/
SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
virtual int disk_initialize();
virtual int disk_write(const char *buffer, int block_number);
virtual int disk_read(char *buffer, int block_number);
virtual int disk_status();
virtual int disk_sync();
virtual int disk_sectors();
protected:
int _cmd(int cmd, int arg);
int _cmdx(int cmd, int arg);
int _cmd8();
int _cmd58();
int initialise_card();
int initialise_card_v1();
int initialise_card_v2();
int _read(char *buffer, int length);
int _write(const char *buffer, int length);
int _sd_sectors();
int _sectors;
SPI _spi;
DigitalOut _cs;
};
#endif