USBMSD SD card Hello World for Mbed platforms

Dependencies:   mbed USBMSD_SD USBDevice

Committer:
samux
Date:
Sun Dec 11 15:42:23 2011 +0000
Revision:
19:148a0b8d23bc
add disk_status to check if init and write protection

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 19:148a0b8d23bc 1 /* mbed USBMSD_SD Library, for providing file access to SD cards
samux 19:148a0b8d23bc 2 * Copyright (c) 2008-2010, sford
samux 19:148a0b8d23bc 3 *
samux 19:148a0b8d23bc 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
samux 19:148a0b8d23bc 5 * of this software and associated documentation files (the "Software"), to deal
samux 19:148a0b8d23bc 6 * in the Software without restriction, including without limitation the rights
samux 19:148a0b8d23bc 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
samux 19:148a0b8d23bc 8 * copies of the Software, and to permit persons to whom the Software is
samux 19:148a0b8d23bc 9 * furnished to do so, subject to the following conditions:
samux 19:148a0b8d23bc 10 *
samux 19:148a0b8d23bc 11 * The above copyright notice and this permission notice shall be included in
samux 19:148a0b8d23bc 12 * all copies or substantial portions of the Software.
samux 19:148a0b8d23bc 13 *
samux 19:148a0b8d23bc 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
samux 19:148a0b8d23bc 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
samux 19:148a0b8d23bc 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
samux 19:148a0b8d23bc 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
samux 19:148a0b8d23bc 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 19:148a0b8d23bc 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
samux 19:148a0b8d23bc 20 * THE SOFTWARE.
samux 19:148a0b8d23bc 21 */
samux 19:148a0b8d23bc 22
samux 19:148a0b8d23bc 23 #ifndef USBMSD_SD_H
samux 19:148a0b8d23bc 24 #define USBMSD_SD_H
samux 19:148a0b8d23bc 25
samux 19:148a0b8d23bc 26 #include "mbed.h"
samux 19:148a0b8d23bc 27 #include "USBMSD.h"
samux 19:148a0b8d23bc 28
samux 19:148a0b8d23bc 29 /** Use the SDcard as mass storage device using the USBMSD class
samux 19:148a0b8d23bc 30 *
samux 19:148a0b8d23bc 31 * @code
samux 19:148a0b8d23bc 32 * #include "mbed.h"
samux 19:148a0b8d23bc 33 * #include "USBMSD_SD.h"
samux 19:148a0b8d23bc 34 *
samux 19:148a0b8d23bc 35 * USBMSD_SD sd(p5, p6, p7, p8);
samux 19:148a0b8d23bc 36 *
samux 19:148a0b8d23bc 37 * int main() {
samux 19:148a0b8d23bc 38 * while(1);
samux 19:148a0b8d23bc 39 * }
samux 19:148a0b8d23bc 40 *
samux 19:148a0b8d23bc 41 * @endcode
samux 19:148a0b8d23bc 42 */
samux 19:148a0b8d23bc 43 class USBMSD_SD : public USBMSD {
samux 19:148a0b8d23bc 44 public:
samux 19:148a0b8d23bc 45
samux 19:148a0b8d23bc 46 /** Create the File System for accessing an SD Card using SPI
samux 19:148a0b8d23bc 47 *
samux 19:148a0b8d23bc 48 * @param mosi SPI mosi pin connected to SD Card
samux 19:148a0b8d23bc 49 * @param miso SPI miso pin conencted to SD Card
samux 19:148a0b8d23bc 50 * @param sclk SPI sclk pin connected to SD Card
samux 19:148a0b8d23bc 51 * @param cs DigitalOut pin used as SD Card chip select
samux 19:148a0b8d23bc 52 * @param name The name used to access the virtual filesystem
samux 19:148a0b8d23bc 53 */
samux 19:148a0b8d23bc 54 USBMSD_SD(PinName mosi, PinName miso, PinName sclk, PinName cs);
samux 19:148a0b8d23bc 55 virtual int disk_initialize();
samux 19:148a0b8d23bc 56 virtual int disk_write(const char *buffer, int block_number);
samux 19:148a0b8d23bc 57 virtual int disk_read(char *buffer, int block_number);
samux 19:148a0b8d23bc 58 virtual int disk_status();
samux 19:148a0b8d23bc 59 virtual int disk_sync();
samux 19:148a0b8d23bc 60 virtual int disk_sectors();
samux 19:148a0b8d23bc 61 virtual int disk_size();
samux 19:148a0b8d23bc 62
samux 19:148a0b8d23bc 63 protected:
samux 19:148a0b8d23bc 64
samux 19:148a0b8d23bc 65 int _cmd(int cmd, int arg);
samux 19:148a0b8d23bc 66 int _cmdx(int cmd, int arg);
samux 19:148a0b8d23bc 67 int _cmd8();
samux 19:148a0b8d23bc 68 int _cmd58();
samux 19:148a0b8d23bc 69 int initialise_card();
samux 19:148a0b8d23bc 70 int initialise_card_v1();
samux 19:148a0b8d23bc 71 int initialise_card_v2();
samux 19:148a0b8d23bc 72
samux 19:148a0b8d23bc 73 int _read(char *buffer, int length);
samux 19:148a0b8d23bc 74 int _write(const char *buffer, int length);
samux 19:148a0b8d23bc 75 int _sd_sectors();
samux 19:148a0b8d23bc 76 int _sectors;
samux 19:148a0b8d23bc 77
samux 19:148a0b8d23bc 78 int capacity;
samux 19:148a0b8d23bc 79 int _status;
samux 19:148a0b8d23bc 80
samux 19:148a0b8d23bc 81 SPI _spi;
samux 19:148a0b8d23bc 82 DigitalOut _cs;
samux 19:148a0b8d23bc 83 };
samux 19:148a0b8d23bc 84
samux 19:148a0b8d23bc 85 #endif