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SDHCFileSystem.h@1:1efbf75bd807, 2012-12-16 (annotated)
- Committer:
- TickTock
- Date:
- Sun Dec 16 23:00:20 2012 +0000
- Revision:
- 1:1efbf75bd807
- Parent:
- 0:89846a293813
no change;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
TickTock | 0:89846a293813 | 1 | /* mbed SDFileSystem Library, for providing file access to SD cards |
TickTock | 0:89846a293813 | 2 | * Copyright (c) 2008-2010, sford |
TickTock | 0:89846a293813 | 3 | * |
TickTock | 0:89846a293813 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
TickTock | 0:89846a293813 | 5 | * of this software and associated documentation files (the "Software"), to deal |
TickTock | 0:89846a293813 | 6 | * in the Software without restriction, including without limitation the rights |
TickTock | 0:89846a293813 | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
TickTock | 0:89846a293813 | 8 | * copies of the Software, and to permit persons to whom the Software is |
TickTock | 0:89846a293813 | 9 | * furnished to do so, subject to the following conditions: |
TickTock | 0:89846a293813 | 10 | * |
TickTock | 0:89846a293813 | 11 | * The above copyright notice and this permission notice shall be included in |
TickTock | 0:89846a293813 | 12 | * all copies or substantial portions of the Software. |
TickTock | 0:89846a293813 | 13 | * |
TickTock | 0:89846a293813 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
TickTock | 0:89846a293813 | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
TickTock | 0:89846a293813 | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
TickTock | 0:89846a293813 | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
TickTock | 0:89846a293813 | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
TickTock | 0:89846a293813 | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
TickTock | 0:89846a293813 | 20 | * THE SOFTWARE. |
TickTock | 0:89846a293813 | 21 | */ |
TickTock | 0:89846a293813 | 22 | |
TickTock | 0:89846a293813 | 23 | #ifndef MBED_SDHCFILESYSTEM_H |
TickTock | 0:89846a293813 | 24 | #define MBED_SDHCFILESYSTEM_H |
TickTock | 0:89846a293813 | 25 | |
TickTock | 0:89846a293813 | 26 | #include "mbed.h" |
TickTock | 0:89846a293813 | 27 | #include "FATFileSystem.h" |
TickTock | 0:89846a293813 | 28 | |
TickTock | 1:1efbf75bd807 | 29 | |
TickTock | 0:89846a293813 | 30 | /* Double Words */ |
TickTock | 0:89846a293813 | 31 | typedef unsigned long long uint64_t; |
TickTock | 0:89846a293813 | 32 | typedef long long sint64_t; |
TickTock | 0:89846a293813 | 33 | |
TickTock | 0:89846a293813 | 34 | /** Access the filesystem on an SD Card using SPI |
TickTock | 0:89846a293813 | 35 | * |
TickTock | 0:89846a293813 | 36 | * @code |
TickTock | 0:89846a293813 | 37 | * #include "mbed.h" |
TickTock | 0:89846a293813 | 38 | * #include "SDFileSystem.h" |
TickTock | 0:89846a293813 | 39 | * |
TickTock | 0:89846a293813 | 40 | * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs |
TickTock | 0:89846a293813 | 41 | * |
TickTock | 0:89846a293813 | 42 | * int main() { |
TickTock | 0:89846a293813 | 43 | * FILE *fp = fopen("/sd/myfile.txt", "w"); |
TickTock | 0:89846a293813 | 44 | * fprintf(fp, "Hello World!\n"); |
TickTock | 0:89846a293813 | 45 | * fclose(fp); |
TickTock | 0:89846a293813 | 46 | * } |
TickTock | 0:89846a293813 | 47 | */ |
TickTock | 0:89846a293813 | 48 | class SDFileSystem : public FATFileSystem { |
TickTock | 0:89846a293813 | 49 | public: |
TickTock | 0:89846a293813 | 50 | |
TickTock | 0:89846a293813 | 51 | /** Create the File System for accessing an SD Card using SPI |
TickTock | 0:89846a293813 | 52 | * |
TickTock | 0:89846a293813 | 53 | * @param mosi SPI mosi pin connected to SD Card |
TickTock | 0:89846a293813 | 54 | * @param miso SPI miso pin conencted to SD Card |
TickTock | 0:89846a293813 | 55 | * @param sclk SPI sclk pin connected to SD Card |
TickTock | 0:89846a293813 | 56 | * @param cs DigitalOut pin used as SD Card chip select |
TickTock | 0:89846a293813 | 57 | * @param name The name used to access the virtual filesystem |
TickTock | 0:89846a293813 | 58 | */ |
TickTock | 0:89846a293813 | 59 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); |
TickTock | 0:89846a293813 | 60 | virtual int disk_initialize(); |
TickTock | 0:89846a293813 | 61 | virtual int disk_write(const char *buffer, int block_number); |
TickTock | 0:89846a293813 | 62 | virtual int disk_read(char *buffer, int block_number); |
TickTock | 0:89846a293813 | 63 | virtual int disk_status(); |
TickTock | 0:89846a293813 | 64 | virtual int disk_sync(); |
TickTock | 0:89846a293813 | 65 | virtual int disk_sectors(); |
TickTock | 0:89846a293813 | 66 | |
TickTock | 0:89846a293813 | 67 | protected: |
TickTock | 0:89846a293813 | 68 | |
TickTock | 0:89846a293813 | 69 | int _cmd(int cmd, int arg); |
TickTock | 0:89846a293813 | 70 | int _cmdx(int cmd, int arg); |
TickTock | 0:89846a293813 | 71 | int _cmd8(); |
TickTock | 0:89846a293813 | 72 | int _cmd58(); |
TickTock | 0:89846a293813 | 73 | int initialise_card(); |
TickTock | 0:89846a293813 | 74 | int initialise_card_v1(); |
TickTock | 0:89846a293813 | 75 | int initialise_card_v2(); |
TickTock | 0:89846a293813 | 76 | |
TickTock | 0:89846a293813 | 77 | int _read(char *buffer, int length); |
TickTock | 0:89846a293813 | 78 | int _write(const char *buffer, int length); |
TickTock | 0:89846a293813 | 79 | int _sd_sectors(); |
TickTock | 0:89846a293813 | 80 | int _sectors; |
TickTock | 0:89846a293813 | 81 | |
TickTock | 0:89846a293813 | 82 | SPI _spi; |
TickTock | 0:89846a293813 | 83 | DigitalOut _cs; |
TickTock | 0:89846a293813 | 84 | int cdv; |
TickTock | 0:89846a293813 | 85 | }; |
TickTock | 0:89846a293813 | 86 | |
TickTock | 0:89846a293813 | 87 | #endif |