USBMSD_SD.h

00001 /* mbed USBMSD_SD Library, for providing file access to SD cards
00002  * Copyright (c) 2008-2010, sford
00003  *
00004  * Permission is hereby granted, free of charge, to any person obtaining a copy
00005  * of this software and associated documentation files (the "Software"), to deal
00006  * in the Software without restriction, including without limitation the rights
00007  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008  * copies of the Software, and to permit persons to whom the Software is
00009  * furnished to do so, subject to the following conditions:
00010  *
00011  * The above copyright notice and this permission notice shall be included in
00012  * all copies or substantial portions of the Software.
00013  *
00014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020  * THE SOFTWARE.
00021  */
00022 
00023 #ifndef USBMSD_SD_H
00024 #define USBMSD_SD_H
00025 
00026 #include "mbed.h"
00027 #include "USBMSD.h"
00028 #include "SDFileSystem.h"
00029 
00030 /** Use the SDcard as mass storage device using the USBMSD class
00031  *
00032  * @code
00033  * #include "mbed.h"
00034  * #include "USBMSD_SD.h"
00035  *
00036  * USBMSD_SD sd(p5, p6, p7, p8);
00037  *
00038  * int main() {
00039  *   while(1);
00040  * }
00041  *
00042  * @endcode
00043  */
00044 class USBMSD_SD : public SDFileSystem, public USBMSD {
00045 public:
00046 
00047     /** Create the File System for accessing an SD Card using SPI
00048      *
00049      * @param mosi SPI mosi pin connected to SD Card
00050      * @param miso SPI miso pin conencted to SD Card
00051      * @param sclk SPI sclk pin connected to SD Card
00052      * @param cs   DigitalOut pin used as SD Card chip select
00053      * @param name The name used to access the virtual filesystem
00054      */
00055     USBMSD_SD(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
00056     
00057     virtual uint64_t disk_size() { return _sectors*512; };
00058     virtual int disk_status() { return _is_initialized?0:1; };
00059     
00060     virtual int disk_read(uint8_t * data, uint64_t block) { return SDFileSystem::disk_read(data, block); };
00061     virtual int disk_write(const uint8_t * data, uint64_t block) { return SDFileSystem::disk_write(data, block); };
00062     virtual int disk_initialize() { return SDFileSystem::disk_initialize(); };
00063     virtual uint64_t disk_sectors() { return SDFileSystem::disk_sectors(); };
00064 };
00065 
00066 #endif