Giles Barton-Owen
acc_dev
SDstuff/SDFileSystem.h@0:3033fd7e75a4, 2010-04-13 (annotated)
- Committer:
- p07gbar
- Date:
- Tue Apr 13 19:14:00 2010 +0000
- Revision:
- 0:3033fd7e75a4
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| p07gbar | 0:3033fd7e75a4 | 1 | /* mbed Microcontroller Library - SDFileSystem |
| p07gbar | 0:3033fd7e75a4 | 2 | * Copyright (c) 2008-2009, sford |
| p07gbar | 0:3033fd7e75a4 | 3 | */ |
| p07gbar | 0:3033fd7e75a4 | 4 | |
| p07gbar | 0:3033fd7e75a4 | 5 | // VERY DRAFT CODE!!! |
| p07gbar | 0:3033fd7e75a4 | 6 | |
| p07gbar | 0:3033fd7e75a4 | 7 | #ifndef SDFILESYSTEM_H |
| p07gbar | 0:3033fd7e75a4 | 8 | #define SDFILESYSTEM_H |
| p07gbar | 0:3033fd7e75a4 | 9 | |
| p07gbar | 0:3033fd7e75a4 | 10 | #include "mbed.h" |
| p07gbar | 0:3033fd7e75a4 | 11 | #include "FATFileSystem.h" |
| p07gbar | 0:3033fd7e75a4 | 12 | |
| p07gbar | 0:3033fd7e75a4 | 13 | /* Class: SDFileSystem |
| p07gbar | 0:3033fd7e75a4 | 14 | * Access the filesystem on an SD Card using SPI |
| p07gbar | 0:3033fd7e75a4 | 15 | * |
| p07gbar | 0:3033fd7e75a4 | 16 | * Example: |
| p07gbar | 0:3033fd7e75a4 | 17 | * > SDFileSystem sd(p5, p6, p7, p12, "sd"); |
| p07gbar | 0:3033fd7e75a4 | 18 | * > |
| p07gbar | 0:3033fd7e75a4 | 19 | * > int main() { |
| p07gbar | 0:3033fd7e75a4 | 20 | * > FILE *fp = fopen("/sd/myfile.txt", "w"); |
| p07gbar | 0:3033fd7e75a4 | 21 | * > fprintf(fp, "Hello World!\n"); |
| p07gbar | 0:3033fd7e75a4 | 22 | * > fclose(fp); |
| p07gbar | 0:3033fd7e75a4 | 23 | * > } |
| p07gbar | 0:3033fd7e75a4 | 24 | */ |
| p07gbar | 0:3033fd7e75a4 | 25 | class SDFileSystem : public FATFileSystem { |
| p07gbar | 0:3033fd7e75a4 | 26 | public: |
| p07gbar | 0:3033fd7e75a4 | 27 | |
| p07gbar | 0:3033fd7e75a4 | 28 | /* Constructor: SDFileSystem |
| p07gbar | 0:3033fd7e75a4 | 29 | * Create the File System for accessing an SD Card using SPI |
| p07gbar | 0:3033fd7e75a4 | 30 | * |
| p07gbar | 0:3033fd7e75a4 | 31 | * Variables: |
| p07gbar | 0:3033fd7e75a4 | 32 | * mosi - SPI mosi pin connected to SD Card |
| p07gbar | 0:3033fd7e75a4 | 33 | * miso - SPI miso pin conencted to SD Card |
| p07gbar | 0:3033fd7e75a4 | 34 | * sclk - SPI sclk pin connected to SD Card |
| p07gbar | 0:3033fd7e75a4 | 35 | * cs - DigitalOut pin used as SD Card chip select |
| p07gbar | 0:3033fd7e75a4 | 36 | * name - The name used to access the filesystem |
| p07gbar | 0:3033fd7e75a4 | 37 | */ |
| p07gbar | 0:3033fd7e75a4 | 38 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); |
| p07gbar | 0:3033fd7e75a4 | 39 | virtual int disk_initialize(); |
| p07gbar | 0:3033fd7e75a4 | 40 | virtual int disk_write(const char *buffer, int block_number); |
| p07gbar | 0:3033fd7e75a4 | 41 | virtual int disk_read(char *buffer, int block_number); |
| p07gbar | 0:3033fd7e75a4 | 42 | virtual int disk_status(); |
| p07gbar | 0:3033fd7e75a4 | 43 | virtual int disk_sync(); |
| p07gbar | 0:3033fd7e75a4 | 44 | virtual int disk_sectors(); |
| p07gbar | 0:3033fd7e75a4 | 45 | |
| p07gbar | 0:3033fd7e75a4 | 46 | protected: |
| p07gbar | 0:3033fd7e75a4 | 47 | |
| p07gbar | 0:3033fd7e75a4 | 48 | int _cmd(int cmd, int arg); |
| p07gbar | 0:3033fd7e75a4 | 49 | int _cmdx(int cmd, int arg); |
| p07gbar | 0:3033fd7e75a4 | 50 | int _cmd8(); |
| p07gbar | 0:3033fd7e75a4 | 51 | int _cmd58(); |
| p07gbar | 0:3033fd7e75a4 | 52 | int initialise_card(); |
| p07gbar | 0:3033fd7e75a4 | 53 | int initialise_card_v1(); |
| p07gbar | 0:3033fd7e75a4 | 54 | int initialise_card_v2(); |
| p07gbar | 0:3033fd7e75a4 | 55 | |
| p07gbar | 0:3033fd7e75a4 | 56 | |
| p07gbar | 0:3033fd7e75a4 | 57 | int _read(char *buffer, int length); |
| p07gbar | 0:3033fd7e75a4 | 58 | int _write(const char *buffer, int length); |
| p07gbar | 0:3033fd7e75a4 | 59 | int _sd_sectors(); |
| p07gbar | 0:3033fd7e75a4 | 60 | int _sectors; |
| p07gbar | 0:3033fd7e75a4 | 61 | |
| p07gbar | 0:3033fd7e75a4 | 62 | SPI _spi; |
| p07gbar | 0:3033fd7e75a4 | 63 | DigitalOut _cs; |
| p07gbar | 0:3033fd7e75a4 | 64 | }; |
| p07gbar | 0:3033fd7e75a4 | 65 | |
| p07gbar | 0:3033fd7e75a4 | 66 | #endif |