USBMSD_BD.h

00001 /* mbed USBMSD_BD Library, for providing file access to Block Devices
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_BD_H
00024 #define USBMSD_BD_H
00025 
00026 #include "mbed.h"
00027 #include "BlockDevice.h"
00028 #include "USBMSD.h"
00029 
00030 /** Use the SDcard as mass storage device using the USBMSD class
00031  *
00032  * @code
00033  * #include "mbed.h"
00034  * #include "USBMSD_BD.h"
00035  *
00036  * USBMSD_BD sd(p5, p6, p7, p8);
00037  *
00038  * int main() {
00039  *   while(1);
00040  * }
00041  *
00042  * @endcode
00043  */
00044 class USBMSD_BD : 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_BD(BlockDevice *bd);
00056     virtual int disk_initialize();
00057     virtual int disk_status();
00058     virtual int disk_read(uint8_t * buffer, uint64_t block_number, uint8_t count);
00059     virtual int disk_write(const uint8_t * buffer, uint64_t block_number, uint8_t count);
00060     virtual int disk_sync();
00061     virtual uint64_t disk_sectors();    
00062     virtual uint64_t disk_size();
00063 
00064 protected:
00065     
00066     uint64_t _sectors;
00067     bd_size_t _ssize;
00068     
00069     uint8_t _status;
00070     
00071     BlockDevice* _bd;
00072 };
00073 
00074 #endif