private Library copy of SDHCFileSystem

Dependents:   eBible WeatherPlatform_20110408 WeatherPlatform SDTest_fat_broken ... more

Committer:
davervw
Date:
Sun Feb 27 18:51:31 2011 +0000
Revision:
0:248d03543f5f
revised to make into library, address compiler warnings, turn off DEBUG

Who changed what in which revision?

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davervw 0:248d03543f5f 1 /* mbed SDFileSystem Library, for providing file access to SD cards
davervw 0:248d03543f5f 2 * Copyright (c) 2008-2010, sford
davervw 0:248d03543f5f 3 *
davervw 0:248d03543f5f 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
davervw 0:248d03543f5f 5 * of this software and associated documentation files (the "Software"), to deal
davervw 0:248d03543f5f 6 * in the Software without restriction, including without limitation the rights
davervw 0:248d03543f5f 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
davervw 0:248d03543f5f 8 * copies of the Software, and to permit persons to whom the Software is
davervw 0:248d03543f5f 9 * furnished to do so, subject to the following conditions:
davervw 0:248d03543f5f 10 *
davervw 0:248d03543f5f 11 * The above copyright notice and this permission notice shall be included in
davervw 0:248d03543f5f 12 * all copies or substantial portions of the Software.
davervw 0:248d03543f5f 13 *
davervw 0:248d03543f5f 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
davervw 0:248d03543f5f 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
davervw 0:248d03543f5f 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
davervw 0:248d03543f5f 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
davervw 0:248d03543f5f 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
davervw 0:248d03543f5f 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
davervw 0:248d03543f5f 20 * THE SOFTWARE.
davervw 0:248d03543f5f 21 */
davervw 0:248d03543f5f 22
davervw 0:248d03543f5f 23 #ifndef MBED_SDHCFILESYSTEM_H
davervw 0:248d03543f5f 24 #define MBED_SDHCFILESYSTEM_H
davervw 0:248d03543f5f 25
davervw 0:248d03543f5f 26 #include "mbed.h"
davervw 0:248d03543f5f 27 #include "FATFileSystem.h"
davervw 0:248d03543f5f 28
davervw 0:248d03543f5f 29 /* Double Words */
davervw 0:248d03543f5f 30 typedef unsigned long long uint64_t;
davervw 0:248d03543f5f 31 typedef long long sint64_t;
davervw 0:248d03543f5f 32
davervw 0:248d03543f5f 33 /** Access the filesystem on an SD Card using SPI
davervw 0:248d03543f5f 34 *
davervw 0:248d03543f5f 35 * @code
davervw 0:248d03543f5f 36 * #include "mbed.h"
davervw 0:248d03543f5f 37 * #include "SDFileSystem.h"
davervw 0:248d03543f5f 38 *
davervw 0:248d03543f5f 39 * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs
davervw 0:248d03543f5f 40 *
davervw 0:248d03543f5f 41 * int main() {
davervw 0:248d03543f5f 42 * FILE *fp = fopen("/sd/myfile.txt", "w");
davervw 0:248d03543f5f 43 * fprintf(fp, "Hello World!\n");
davervw 0:248d03543f5f 44 * fclose(fp);
davervw 0:248d03543f5f 45 * }
davervw 0:248d03543f5f 46 */
davervw 0:248d03543f5f 47 class SDFileSystem : public FATFileSystem {
davervw 0:248d03543f5f 48 public:
davervw 0:248d03543f5f 49
davervw 0:248d03543f5f 50 /** Create the File System for accessing an SD Card using SPI
davervw 0:248d03543f5f 51 *
davervw 0:248d03543f5f 52 * @param mosi SPI mosi pin connected to SD Card
davervw 0:248d03543f5f 53 * @param miso SPI miso pin conencted to SD Card
davervw 0:248d03543f5f 54 * @param sclk SPI sclk pin connected to SD Card
davervw 0:248d03543f5f 55 * @param cs DigitalOut pin used as SD Card chip select
davervw 0:248d03543f5f 56 * @param name The name used to access the virtual filesystem
davervw 0:248d03543f5f 57 */
davervw 0:248d03543f5f 58 SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
davervw 0:248d03543f5f 59 virtual int disk_initialize();
davervw 0:248d03543f5f 60 virtual int disk_write(const char *buffer, int block_number);
davervw 0:248d03543f5f 61 virtual int disk_read(char *buffer, int block_number);
davervw 0:248d03543f5f 62 virtual int disk_status();
davervw 0:248d03543f5f 63 virtual int disk_sync();
davervw 0:248d03543f5f 64 virtual int disk_sectors();
davervw 0:248d03543f5f 65
davervw 0:248d03543f5f 66 protected:
davervw 0:248d03543f5f 67
davervw 0:248d03543f5f 68 int _cmd(int cmd, int arg);
davervw 0:248d03543f5f 69 int _cmdx(int cmd, int arg);
davervw 0:248d03543f5f 70 int _cmd8();
davervw 0:248d03543f5f 71 int _cmd58();
davervw 0:248d03543f5f 72 int initialise_card();
davervw 0:248d03543f5f 73 int initialise_card_v1();
davervw 0:248d03543f5f 74 int initialise_card_v2();
davervw 0:248d03543f5f 75
davervw 0:248d03543f5f 76 int _read(char *buffer, int length);
davervw 0:248d03543f5f 77 int _write(const char *buffer, int length);
davervw 0:248d03543f5f 78 int _sd_sectors();
davervw 0:248d03543f5f 79 int _sectors;
davervw 0:248d03543f5f 80
davervw 0:248d03543f5f 81 SPI _spi;
davervw 0:248d03543f5f 82 DigitalOut _cs;
davervw 0:248d03543f5f 83 int cdv;
davervw 0:248d03543f5f 84 };
davervw 0:248d03543f5f 85
davervw 0:248d03543f5f 86 #endif