Peter Cooper
test code for our MBED board
SDFileSystem.h@1:6877bb99aa17, 2011-05-04 (annotated)
- Committer:
- lolpcc
- Date:
- Wed May 04 08:30:52 2011 +0000
- Revision:
- 1:6877bb99aa17
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| lolpcc | 1:6877bb99aa17 | 1 | /* mbed Microcontroller Library - SDFileSystem |
| lolpcc | 1:6877bb99aa17 | 2 | * Copyright (c) 2008-2009, sford |
| lolpcc | 1:6877bb99aa17 | 3 | */ |
| lolpcc | 1:6877bb99aa17 | 4 | |
| lolpcc | 1:6877bb99aa17 | 5 | #ifndef SDFILESYSTEM_H |
| lolpcc | 1:6877bb99aa17 | 6 | #define SDFILESYSTEM_H |
| lolpcc | 1:6877bb99aa17 | 7 | |
| lolpcc | 1:6877bb99aa17 | 8 | #include "mbed.h" |
| lolpcc | 1:6877bb99aa17 | 9 | #include "FATFileSystem.h" |
| lolpcc | 1:6877bb99aa17 | 10 | |
| lolpcc | 1:6877bb99aa17 | 11 | /* Class: SDFileSystem |
| lolpcc | 1:6877bb99aa17 | 12 | * Access the filesystem on an SD Card using SPI |
| lolpcc | 1:6877bb99aa17 | 13 | * |
| lolpcc | 1:6877bb99aa17 | 14 | * Example: |
| lolpcc | 1:6877bb99aa17 | 15 | * > SDFileSystem sd(p5, p6, p7, p12, "sd"); |
| lolpcc | 1:6877bb99aa17 | 16 | * > |
| lolpcc | 1:6877bb99aa17 | 17 | * > int main() { |
| lolpcc | 1:6877bb99aa17 | 18 | * > FILE *fp = fopen("/sd/myfile.txt", "w"); |
| lolpcc | 1:6877bb99aa17 | 19 | * > fprintf(fp, "Hello World!\n"); |
| lolpcc | 1:6877bb99aa17 | 20 | * > fclose(fp); |
| lolpcc | 1:6877bb99aa17 | 21 | * > } |
| lolpcc | 1:6877bb99aa17 | 22 | */ |
| lolpcc | 1:6877bb99aa17 | 23 | class SDFileSystem : public FATFileSystem { |
| lolpcc | 1:6877bb99aa17 | 24 | public: |
| lolpcc | 1:6877bb99aa17 | 25 | |
| lolpcc | 1:6877bb99aa17 | 26 | /* Constructor: SDFileSystem |
| lolpcc | 1:6877bb99aa17 | 27 | * Create the File System for accessing an SD Card using SPI |
| lolpcc | 1:6877bb99aa17 | 28 | * |
| lolpcc | 1:6877bb99aa17 | 29 | * Variables: |
| lolpcc | 1:6877bb99aa17 | 30 | * mosi - SPI mosi pin connected to SD Card |
| lolpcc | 1:6877bb99aa17 | 31 | * miso - SPI miso pin conencted to SD Card |
| lolpcc | 1:6877bb99aa17 | 32 | * sclk - SPI sclk pin connected to SD Card |
| lolpcc | 1:6877bb99aa17 | 33 | * cs - DigitalOut pin used as SD Card chip select |
| lolpcc | 1:6877bb99aa17 | 34 | * name - The name used to access the filesystem |
| lolpcc | 1:6877bb99aa17 | 35 | */ |
| lolpcc | 1:6877bb99aa17 | 36 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); |
| lolpcc | 1:6877bb99aa17 | 37 | virtual int disk_initialize(); |
| lolpcc | 1:6877bb99aa17 | 38 | virtual int disk_write(const char *buffer, int block_number); |
| lolpcc | 1:6877bb99aa17 | 39 | virtual int disk_read(char *buffer, int block_number); |
| lolpcc | 1:6877bb99aa17 | 40 | virtual int disk_status(); |
| lolpcc | 1:6877bb99aa17 | 41 | virtual int disk_sync(); |
| lolpcc | 1:6877bb99aa17 | 42 | virtual int disk_sectors(); |
| lolpcc | 1:6877bb99aa17 | 43 | |
| lolpcc | 1:6877bb99aa17 | 44 | protected: |
| lolpcc | 1:6877bb99aa17 | 45 | |
| lolpcc | 1:6877bb99aa17 | 46 | int _cmd(int cmd, int arg); |
| lolpcc | 1:6877bb99aa17 | 47 | int _read(char *buffer, int length); |
| lolpcc | 1:6877bb99aa17 | 48 | int _write(const char *buffer, int length); |
| lolpcc | 1:6877bb99aa17 | 49 | int _sd_sectors(); |
| lolpcc | 1:6877bb99aa17 | 50 | int _sectors; |
| lolpcc | 1:6877bb99aa17 | 51 | |
| lolpcc | 1:6877bb99aa17 | 52 | SPI _spi; |
| lolpcc | 1:6877bb99aa17 | 53 | DigitalOut _cs; |
| lolpcc | 1:6877bb99aa17 | 54 | }; |
| lolpcc | 1:6877bb99aa17 | 55 | |
| lolpcc | 1:6877bb99aa17 | 56 | #endif |