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Fork of SDFileSystem by
SDFileSystem.h@4:0046f1b576ec, 2013-07-14 (annotated)
- Committer:
- zchen311
- Date:
- Sun Jul 14 20:29:53 2013 +0000
- Revision:
- 4:0046f1b576ec
done
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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zchen311 | 4:0046f1b576ec | 1 | /* mbed Microcontroller Library |
zchen311 | 4:0046f1b576ec | 2 | * Copyright (c) 2006-2012 ARM Limited |
zchen311 | 4:0046f1b576ec | 3 | * |
zchen311 | 4:0046f1b576ec | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
zchen311 | 4:0046f1b576ec | 5 | * of this software and associated documentation files (the "Software"), to deal |
zchen311 | 4:0046f1b576ec | 6 | * in the Software without restriction, including without limitation the rights |
zchen311 | 4:0046f1b576ec | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
zchen311 | 4:0046f1b576ec | 8 | * copies of the Software, and to permit persons to whom the Software is |
zchen311 | 4:0046f1b576ec | 9 | * furnished to do so, subject to the following conditions: |
zchen311 | 4:0046f1b576ec | 10 | * |
zchen311 | 4:0046f1b576ec | 11 | * The above copyright notice and this permission notice shall be included in |
zchen311 | 4:0046f1b576ec | 12 | * all copies or substantial portions of the Software. |
zchen311 | 4:0046f1b576ec | 13 | * |
zchen311 | 4:0046f1b576ec | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
zchen311 | 4:0046f1b576ec | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
zchen311 | 4:0046f1b576ec | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
zchen311 | 4:0046f1b576ec | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
zchen311 | 4:0046f1b576ec | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
zchen311 | 4:0046f1b576ec | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
zchen311 | 4:0046f1b576ec | 20 | * SOFTWARE. |
zchen311 | 4:0046f1b576ec | 21 | */ |
zchen311 | 4:0046f1b576ec | 22 | #ifndef MBED_SDFILESYSTEM_H |
zchen311 | 4:0046f1b576ec | 23 | #define MBED_SDFILESYSTEM_H |
zchen311 | 4:0046f1b576ec | 24 | |
zchen311 | 4:0046f1b576ec | 25 | #include "mbed.h" |
zchen311 | 4:0046f1b576ec | 26 | #include "FATFileSystem.h" |
zchen311 | 4:0046f1b576ec | 27 | #include <stdint.h> |
zchen311 | 4:0046f1b576ec | 28 | |
zchen311 | 4:0046f1b576ec | 29 | /** Access the filesystem on an SD Card using SPI |
zchen311 | 4:0046f1b576ec | 30 | * |
zchen311 | 4:0046f1b576ec | 31 | * @code |
zchen311 | 4:0046f1b576ec | 32 | * #include "mbed.h" |
zchen311 | 4:0046f1b576ec | 33 | * #include "SDFileSystem.h" |
zchen311 | 4:0046f1b576ec | 34 | * |
zchen311 | 4:0046f1b576ec | 35 | * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs |
zchen311 | 4:0046f1b576ec | 36 | * |
zchen311 | 4:0046f1b576ec | 37 | * int main() { |
zchen311 | 4:0046f1b576ec | 38 | * FILE *fp = fopen("/sd/myfile.txt", "w"); |
zchen311 | 4:0046f1b576ec | 39 | * fprintf(fp, "Hello World!\n"); |
zchen311 | 4:0046f1b576ec | 40 | * fclose(fp); |
zchen311 | 4:0046f1b576ec | 41 | * } |
zchen311 | 4:0046f1b576ec | 42 | */ |
zchen311 | 4:0046f1b576ec | 43 | class SDFileSystem : public FATFileSystem { |
zchen311 | 4:0046f1b576ec | 44 | public: |
zchen311 | 4:0046f1b576ec | 45 | |
zchen311 | 4:0046f1b576ec | 46 | /** Create the File System for accessing an SD Card using SPI |
zchen311 | 4:0046f1b576ec | 47 | * |
zchen311 | 4:0046f1b576ec | 48 | * @param mosi SPI mosi pin connected to SD Card |
zchen311 | 4:0046f1b576ec | 49 | * @param miso SPI miso pin conencted to SD Card |
zchen311 | 4:0046f1b576ec | 50 | * @param sclk SPI sclk pin connected to SD Card |
zchen311 | 4:0046f1b576ec | 51 | * @param cs DigitalOut pin used as SD Card chip select |
zchen311 | 4:0046f1b576ec | 52 | * @param name The name used to access the virtual filesystem |
zchen311 | 4:0046f1b576ec | 53 | */ |
zchen311 | 4:0046f1b576ec | 54 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName cd, const char* name); |
zchen311 | 4:0046f1b576ec | 55 | virtual int disk_initialize(); |
zchen311 | 4:0046f1b576ec | 56 | virtual int disk_status(); |
zchen311 | 4:0046f1b576ec | 57 | virtual int disk_read(uint8_t * buffer, uint64_t block_number); |
zchen311 | 4:0046f1b576ec | 58 | virtual int disk_write(const uint8_t * buffer, uint64_t block_number); |
zchen311 | 4:0046f1b576ec | 59 | virtual int disk_sync(); |
zchen311 | 4:0046f1b576ec | 60 | virtual uint64_t disk_sectors(); |
zchen311 | 4:0046f1b576ec | 61 | bool sd_inserted(); |
zchen311 | 4:0046f1b576ec | 62 | |
zchen311 | 4:0046f1b576ec | 63 | protected: |
zchen311 | 4:0046f1b576ec | 64 | |
zchen311 | 4:0046f1b576ec | 65 | int _cmd(int cmd, int arg); |
zchen311 | 4:0046f1b576ec | 66 | int _cmdx(int cmd, int arg); |
zchen311 | 4:0046f1b576ec | 67 | int _cmd8(); |
zchen311 | 4:0046f1b576ec | 68 | int _cmd58(); |
zchen311 | 4:0046f1b576ec | 69 | int initialise_card(); |
zchen311 | 4:0046f1b576ec | 70 | int initialise_card_v1(); |
zchen311 | 4:0046f1b576ec | 71 | int initialise_card_v2(); |
zchen311 | 4:0046f1b576ec | 72 | |
zchen311 | 4:0046f1b576ec | 73 | int _read(uint8_t * buffer, uint32_t length); |
zchen311 | 4:0046f1b576ec | 74 | int _write(const uint8_t *buffer, uint32_t length); |
zchen311 | 4:0046f1b576ec | 75 | uint64_t _sd_sectors(); |
zchen311 | 4:0046f1b576ec | 76 | uint64_t _sectors; |
zchen311 | 4:0046f1b576ec | 77 | |
zchen311 | 4:0046f1b576ec | 78 | SPI _spi; |
zchen311 | 4:0046f1b576ec | 79 | DigitalOut _cs; |
zchen311 | 4:0046f1b576ec | 80 | DigitalIn _cd; |
zchen311 | 4:0046f1b576ec | 81 | int cdv; |
zchen311 | 4:0046f1b576ec | 82 | }; |
zchen311 | 4:0046f1b576ec | 83 | |
zchen311 | 4:0046f1b576ec | 84 | #endif |