This library implements a USB Mass Storage device in the ethernet RAM bank
Dependents: Lab8_USB-MSD_RAM_HelloWorld_mbed
Fork of USBMSD_SD by
Diff: USBMSD_RAM.h
- Revision:
- 5:eebd06a7ddf0
- Parent:
- 3:dbd7383533e6
diff -r a4423c624fed -r eebd06a7ddf0 USBMSD_RAM.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBMSD_RAM.h Wed Mar 26 07:45:40 2014 +0000 @@ -0,0 +1,87 @@ +/* mbed USBMSD_RAM 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 USBMSD_RAM_H +#define USBMSD_RAM_H + +#include "mbed.h" +#include "USBMSD.h" + +/** Use the SDcard as mass storage device using the USBMSD class + * + * @code + * #include "mbed.h" + * #include "USBMSD_RAM.h" + * + * USBMSD_RAM sd(p5, p6, p7, p8); + * + * int main() { + * while(1); + * } + * + * @endcode + */ +class USBMSD_RAM : public USBMSD { +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 + */ + USBMSD_RAM(PinName mosi, PinName miso, PinName sclk, PinName cs); + virtual int disk_initialize(); + virtual int disk_status(); + virtual int disk_read(uint8_t * buffer, uint64_t block_number); + virtual int disk_write(const uint8_t * buffer, uint64_t block_number); + virtual int disk_sync(); + virtual uint64_t disk_sectors(); + +//virtual uint64_t disk_size(){return _sectors*512;}; + virtual uint64_t disk_size(); + +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(uint8_t * buffer, uint32_t length); + int _write(const uint8_t *buffer, uint32_t length); + uint64_t _sd_sectors(); + uint64_t _sectors; + + uint8_t _status; + + SPI _spi; + DigitalOut _cs; + int cdv; +}; + +#endif