USBMSD_Ram.h

00001 /* mbed USBMSD_Ram Library
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy
00004  * of this software and associated documentation files (the "Software"), to deal
00005  * in the Software without restriction, including without limitation the rights
00006  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00007  * copies of the Software, and to permit persons to whom the Software is
00008  * furnished to do so, subject to the following conditions:
00009  *
00010  * The above copyright notice and this permission notice shall be included in
00011  * all copies or substantial portions of the Software.
00012  *
00013  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00014  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00015  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00016  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00017  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00018  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00019  * THE SOFTWARE.
00020  */
00021 
00022 #ifndef USBMSD_RAM_H
00023 #define USBMSD_RAM_H
00024 
00025 #include "mbed.h"
00026 #include "USBMSD.h"
00027 
00028 //#define NB_SECTORS (10)
00029 #define RAW_SECTORS 6
00030 #define IMG_SECTORS 200
00031 
00032 /** Use the SDcard as mass storage device using the USBMSD class
00033  *
00034  * @code
00035  * #include "mbed.h"
00036  * #include "USBMSD_Ram.h"
00037  *
00038  * USBMSD_Ram sd(p5, p6, p7, p8);
00039  *
00040  * int main() {
00041  *   while(1);
00042  * }
00043  *
00044  * @endcode
00045  */
00046 class USBMSD_Ram : public USBMSD {
00047 public:
00048 
00049    
00050     USBMSD_Ram();
00051     virtual int disk_initialize();
00052     virtual int disk_write(const uint8_t * data, uint64_t block, uint8_t count);
00053     virtual int disk_read(uint8_t * data, uint64_t block, uint8_t count);    
00054     virtual int disk_status();
00055     virtual int disk_sync();
00056     virtual uint64_t disk_sectors();
00057     virtual uint64_t disk_size();
00058     virtual int disk_ioctl (uint8_t pdrv, uint8_t cmd, void* buff);
00059 
00060     void (*parseFat)(int sector, const uint8_t *buf, int len);
00061 
00062 protected:
00063     int _status;
00064     char disk_image[512*RAW_SECTORS];
00065 
00066 };
00067 
00068 #endif