Demonstration of a very simple unix-like shell. Based on integrating both Klaus Bu\'s SDHCFileSystem and the FATFileSystem library out of Thomas Hamilton\'s SDCard program. Result: you get high capacity + a plethora of filesystem functions.
SDHCFileSystem.h@0:792bddcf799d, 2011-10-11 (annotated)
- Committer:
- shimniok
- Date:
- Tue Oct 11 15:13:42 2011 +0000
- Revision:
- 0:792bddcf799d
Initial
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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shimniok | 0:792bddcf799d | 1 | /* mbed SDFileSystem Library, for providing file access to SD cards |
shimniok | 0:792bddcf799d | 2 | * Copyright (c) 2008-2010, sford |
shimniok | 0:792bddcf799d | 3 | * |
shimniok | 0:792bddcf799d | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
shimniok | 0:792bddcf799d | 5 | * of this software and associated documentation files (the "Software"), to deal |
shimniok | 0:792bddcf799d | 6 | * in the Software without restriction, including without limitation the rights |
shimniok | 0:792bddcf799d | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
shimniok | 0:792bddcf799d | 8 | * copies of the Software, and to permit persons to whom the Software is |
shimniok | 0:792bddcf799d | 9 | * furnished to do so, subject to the following conditions: |
shimniok | 0:792bddcf799d | 10 | * |
shimniok | 0:792bddcf799d | 11 | * The above copyright notice and this permission notice shall be included in |
shimniok | 0:792bddcf799d | 12 | * all copies or substantial portions of the Software. |
shimniok | 0:792bddcf799d | 13 | * |
shimniok | 0:792bddcf799d | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
shimniok | 0:792bddcf799d | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
shimniok | 0:792bddcf799d | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
shimniok | 0:792bddcf799d | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
shimniok | 0:792bddcf799d | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
shimniok | 0:792bddcf799d | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
shimniok | 0:792bddcf799d | 20 | * THE SOFTWARE. |
shimniok | 0:792bddcf799d | 21 | */ |
shimniok | 0:792bddcf799d | 22 | |
shimniok | 0:792bddcf799d | 23 | #ifndef MBED_SDHCFILESYSTEM_H |
shimniok | 0:792bddcf799d | 24 | #define MBED_SDHCFILESYSTEM_H |
shimniok | 0:792bddcf799d | 25 | |
shimniok | 0:792bddcf799d | 26 | #include "mbed.h" |
shimniok | 0:792bddcf799d | 27 | #include "FATFileSystem.h" |
shimniok | 0:792bddcf799d | 28 | |
shimniok | 0:792bddcf799d | 29 | /* Double Words */ |
shimniok | 0:792bddcf799d | 30 | typedef unsigned long long uint64_t; |
shimniok | 0:792bddcf799d | 31 | typedef long long sint64_t; |
shimniok | 0:792bddcf799d | 32 | |
shimniok | 0:792bddcf799d | 33 | /** Access the filesystem on an SD Card using SPI |
shimniok | 0:792bddcf799d | 34 | * |
shimniok | 0:792bddcf799d | 35 | * @code |
shimniok | 0:792bddcf799d | 36 | * #include "mbed.h" |
shimniok | 0:792bddcf799d | 37 | * #include "SDFileSystem.h" |
shimniok | 0:792bddcf799d | 38 | * |
shimniok | 0:792bddcf799d | 39 | * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs |
shimniok | 0:792bddcf799d | 40 | * |
shimniok | 0:792bddcf799d | 41 | * int main() { |
shimniok | 0:792bddcf799d | 42 | * FILE *fp = fopen("/sd/myfile.txt", "w"); |
shimniok | 0:792bddcf799d | 43 | * fprintf(fp, "Hello World!\n"); |
shimniok | 0:792bddcf799d | 44 | * fclose(fp); |
shimniok | 0:792bddcf799d | 45 | * } |
shimniok | 0:792bddcf799d | 46 | */ |
shimniok | 0:792bddcf799d | 47 | class SDFileSystem : public FATFileSystem { |
shimniok | 0:792bddcf799d | 48 | public: |
shimniok | 0:792bddcf799d | 49 | |
shimniok | 0:792bddcf799d | 50 | /** Create the File System for accessing an SD Card using SPI |
shimniok | 0:792bddcf799d | 51 | * |
shimniok | 0:792bddcf799d | 52 | * @param mosi SPI mosi pin connected to SD Card |
shimniok | 0:792bddcf799d | 53 | * @param miso SPI miso pin conencted to SD Card |
shimniok | 0:792bddcf799d | 54 | * @param sclk SPI sclk pin connected to SD Card |
shimniok | 0:792bddcf799d | 55 | * @param cs DigitalOut pin used as SD Card chip select |
shimniok | 0:792bddcf799d | 56 | * @param name The name used to access the virtual filesystem |
shimniok | 0:792bddcf799d | 57 | */ |
shimniok | 0:792bddcf799d | 58 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); |
shimniok | 0:792bddcf799d | 59 | virtual int disk_initialize(); |
shimniok | 0:792bddcf799d | 60 | virtual int disk_status(); |
shimniok | 0:792bddcf799d | 61 | virtual int disk_read(unsigned char *buffer, unsigned long block_number, unsigned char count); |
shimniok | 0:792bddcf799d | 62 | virtual int disk_write(const unsigned char *buffer, unsigned long block_number, unsigned char count); |
shimniok | 0:792bddcf799d | 63 | virtual int disk_sync(); |
shimniok | 0:792bddcf799d | 64 | virtual unsigned long disk_sector_count(); |
shimniok | 0:792bddcf799d | 65 | |
shimniok | 0:792bddcf799d | 66 | protected: |
shimniok | 0:792bddcf799d | 67 | |
shimniok | 0:792bddcf799d | 68 | int _cmd(int cmd, int arg); |
shimniok | 0:792bddcf799d | 69 | int _cmdx(int cmd, int arg); |
shimniok | 0:792bddcf799d | 70 | int _cmd8(); |
shimniok | 0:792bddcf799d | 71 | int _cmd58(); |
shimniok | 0:792bddcf799d | 72 | int initialise_card(); |
shimniok | 0:792bddcf799d | 73 | int initialise_card_v1(); |
shimniok | 0:792bddcf799d | 74 | int initialise_card_v2(); |
shimniok | 0:792bddcf799d | 75 | |
shimniok | 0:792bddcf799d | 76 | int _read(unsigned char *buffer, int length); |
shimniok | 0:792bddcf799d | 77 | int _write(const unsigned char *buffer, int length); |
shimniok | 0:792bddcf799d | 78 | unsigned long _sd_sectors(); |
shimniok | 0:792bddcf799d | 79 | unsigned long _sectors; |
shimniok | 0:792bddcf799d | 80 | |
shimniok | 0:792bddcf799d | 81 | SPI _spi; |
shimniok | 0:792bddcf799d | 82 | DigitalOut _cs; |
shimniok | 0:792bddcf799d | 83 | int cdv; |
shimniok | 0:792bddcf799d | 84 | }; |
shimniok | 0:792bddcf799d | 85 | |
shimniok | 0:792bddcf799d | 86 | #endif |