Luth Haroon / SD_modified

SD card interface

USBMSD_SD/USBMSD_SD.h@0:22612ae617a0, 2012-10-08 (annotated)

Committer:
lharoon
Date:
Mon Oct 08 11:14:07 2012 +0000
Revision:
0:22612ae617a0
1st edition

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lharoon 0:22612ae617a0 1 /* mbed USBMSD_SD Library, for providing file access to SD cards
lharoon 0:22612ae617a0 2 * Copyright (c) 2008-2010, sford
lharoon 0:22612ae617a0 3 *
lharoon 0:22612ae617a0 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
lharoon 0:22612ae617a0 5 * of this software and associated documentation files (the "Software"), to deal
lharoon 0:22612ae617a0 6 * in the Software without restriction, including without limitation the rights
lharoon 0:22612ae617a0 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
lharoon 0:22612ae617a0 8 * copies of the Software, and to permit persons to whom the Software is
lharoon 0:22612ae617a0 9 * furnished to do so, subject to the following conditions:
lharoon 0:22612ae617a0 10 *
lharoon 0:22612ae617a0 11 * The above copyright notice and this permission notice shall be included in
lharoon 0:22612ae617a0 12 * all copies or substantial portions of the Software.
lharoon 0:22612ae617a0 13 *
lharoon 0:22612ae617a0 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
lharoon 0:22612ae617a0 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
lharoon 0:22612ae617a0 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
lharoon 0:22612ae617a0 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
lharoon 0:22612ae617a0 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
lharoon 0:22612ae617a0 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
lharoon 0:22612ae617a0 20 * THE SOFTWARE.
lharoon 0:22612ae617a0 21 */
lharoon 0:22612ae617a0 22
lharoon 0:22612ae617a0 23 #ifndef USBMSD_SD_H
lharoon 0:22612ae617a0 24 #define USBMSD_SD_H
lharoon 0:22612ae617a0 25
lharoon 0:22612ae617a0 26 #include "mbed.h"
lharoon 0:22612ae617a0 27 #include "USBMSD.h"
lharoon 0:22612ae617a0 28
lharoon 0:22612ae617a0 29 /* Double Words */
lharoon 0:22612ae617a0 30 typedef unsigned long long uint64_t;
lharoon 0:22612ae617a0 31 typedef long long sint64_t;
lharoon 0:22612ae617a0 32 /** Use the SDcard as mass storage device using the USBMSD class
lharoon 0:22612ae617a0 33 *
lharoon 0:22612ae617a0 34 * @code
lharoon 0:22612ae617a0 35 * #include "mbed.h"
lharoon 0:22612ae617a0 36 * #include "USBMSD_SD.h"
lharoon 0:22612ae617a0 37 *
lharoon 0:22612ae617a0 38 * USBMSD_SD sd(p5, p6, p7, p8);
lharoon 0:22612ae617a0 39 *
lharoon 0:22612ae617a0 40 * int main() {
lharoon 0:22612ae617a0 41 * while(1);
lharoon 0:22612ae617a0 42 * }
lharoon 0:22612ae617a0 43 *
lharoon 0:22612ae617a0 44 * @endcode
lharoon 0:22612ae617a0 45 */
lharoon 0:22612ae617a0 46 class USBMSD_SD : public USBMSD {
lharoon 0:22612ae617a0 47 public:
lharoon 0:22612ae617a0 48
lharoon 0:22612ae617a0 49 /** Create the File System for accessing an SD Card using SPI
lharoon 0:22612ae617a0 50 *
lharoon 0:22612ae617a0 51 * @param mosi SPI mosi pin connected to SD Card
lharoon 0:22612ae617a0 52 * @param miso SPI miso pin conencted to SD Card
lharoon 0:22612ae617a0 53 * @param sclk SPI sclk pin connected to SD Card
lharoon 0:22612ae617a0 54 * @param cs DigitalOut pin used as SD Card chip select
lharoon 0:22612ae617a0 55 * @param name The name used to access the virtual filesystem
lharoon 0:22612ae617a0 56 */
lharoon 0:22612ae617a0 57 USBMSD_SD(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName ncardpresent, PinName activity, PinName test);
lharoon 0:22612ae617a0 58 virtual int disk_initialize();
lharoon 0:22612ae617a0 59 virtual int disk_write(const char *buffer, int block_number);
lharoon 0:22612ae617a0 60 virtual int disk_read(char *buffer, int block_number);
lharoon 0:22612ae617a0 61 virtual int disk_status();
lharoon 0:22612ae617a0 62 virtual int disk_sync();
lharoon 0:22612ae617a0 63 virtual int disk_sectors();
lharoon 0:22612ae617a0 64 virtual uint64_t disk_size();
lharoon 0:22612ae617a0 65 virtual int disk_present();
lharoon 0:22612ae617a0 66
lharoon 0:22612ae617a0 67 protected:
lharoon 0:22612ae617a0 68
lharoon 0:22612ae617a0 69 int _cmd(int cmd, int arg);
lharoon 0:22612ae617a0 70 int _cmdx(int cmd, int arg);
lharoon 0:22612ae617a0 71 int _cmd8();
lharoon 0:22612ae617a0 72 int _cmd58();
lharoon 0:22612ae617a0 73 int initialise_card();
lharoon 0:22612ae617a0 74 int initialise_card_v1();
lharoon 0:22612ae617a0 75 int initialise_card_v2();
lharoon 0:22612ae617a0 76
lharoon 0:22612ae617a0 77 int _read(char *buffer, int length);
lharoon 0:22612ae617a0 78 int _write(const char *buffer, int length);
lharoon 0:22612ae617a0 79 int _sd_sectors();
lharoon 0:22612ae617a0 80 int _sectors;
lharoon 0:22612ae617a0 81
lharoon 0:22612ae617a0 82 uint64_t capacity;
lharoon 0:22612ae617a0 83 int _status;
lharoon 0:22612ae617a0 84
lharoon 0:22612ae617a0 85 SPI _spi;
lharoon 0:22612ae617a0 86 DigitalOut _cs;
lharoon 0:22612ae617a0 87 DigitalOut _activity;
lharoon 0:22612ae617a0 88 DigitalIn _ncardpresent;
lharoon 0:22612ae617a0 89 int cdv;
lharoon 0:22612ae617a0 90 DigitalOut _writeTest;
lharoon 0:22612ae617a0 91 };
lharoon 0:22612ae617a0 92
lharoon 0:22612ae617a0 93 #endif