This is a code which generates the various zoomed versions of an image stored in an SD card and displays it on a Nokia LCD based on the keys pressed on a capacitive touch pad.
Dependencies: FatFileSystem mbed
Fork of Lab3 by
SDFileSystem/SDFileSystem.h@0:c546b51ecf0b, 2011-10-11 (annotated)
- Committer:
- XkLi
- Date:
- Tue Oct 11 01:24:18 2011 +0000
- Revision:
- 0:c546b51ecf0b
v1.0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
XkLi | 0:c546b51ecf0b | 1 | /* mbed SDFileSystem Library, for providing file access to SD cards |
XkLi | 0:c546b51ecf0b | 2 | * Copyright (c) 2008-2010, sford |
XkLi | 0:c546b51ecf0b | 3 | * |
XkLi | 0:c546b51ecf0b | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
XkLi | 0:c546b51ecf0b | 5 | * of this software and associated documentation files (the "Software"), to deal |
XkLi | 0:c546b51ecf0b | 6 | * in the Software without restriction, including without limitation the rights |
XkLi | 0:c546b51ecf0b | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
XkLi | 0:c546b51ecf0b | 8 | * copies of the Software, and to permit persons to whom the Software is |
XkLi | 0:c546b51ecf0b | 9 | * furnished to do so, subject to the following conditions: |
XkLi | 0:c546b51ecf0b | 10 | * |
XkLi | 0:c546b51ecf0b | 11 | * The above copyright notice and this permission notice shall be included in |
XkLi | 0:c546b51ecf0b | 12 | * all copies or substantial portions of the Software. |
XkLi | 0:c546b51ecf0b | 13 | * |
XkLi | 0:c546b51ecf0b | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
XkLi | 0:c546b51ecf0b | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
XkLi | 0:c546b51ecf0b | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
XkLi | 0:c546b51ecf0b | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
XkLi | 0:c546b51ecf0b | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
XkLi | 0:c546b51ecf0b | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
XkLi | 0:c546b51ecf0b | 20 | * THE SOFTWARE. |
XkLi | 0:c546b51ecf0b | 21 | */ |
XkLi | 0:c546b51ecf0b | 22 | |
XkLi | 0:c546b51ecf0b | 23 | #ifndef MBED_SDFILESYSTEM_H |
XkLi | 0:c546b51ecf0b | 24 | #define MBED_SDFILESYSTEM_H |
XkLi | 0:c546b51ecf0b | 25 | |
XkLi | 0:c546b51ecf0b | 26 | #include "mbed.h" |
XkLi | 0:c546b51ecf0b | 27 | #include "FATFileSystem.h" |
XkLi | 0:c546b51ecf0b | 28 | |
XkLi | 0:c546b51ecf0b | 29 | /** Access the filesystem on an SD Card using SPI |
XkLi | 0:c546b51ecf0b | 30 | * |
XkLi | 0:c546b51ecf0b | 31 | * @code |
XkLi | 0:c546b51ecf0b | 32 | * #include "mbed.h" |
XkLi | 0:c546b51ecf0b | 33 | * #include "SDFileSystem.h" |
XkLi | 0:c546b51ecf0b | 34 | * |
XkLi | 0:c546b51ecf0b | 35 | * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs |
XkLi | 0:c546b51ecf0b | 36 | * |
XkLi | 0:c546b51ecf0b | 37 | * int main() { |
XkLi | 0:c546b51ecf0b | 38 | * FILE *fp = fopen("/sd/myfile.txt", "w"); |
XkLi | 0:c546b51ecf0b | 39 | * fprintf(fp, "Hello World!\n"); |
XkLi | 0:c546b51ecf0b | 40 | * fclose(fp); |
XkLi | 0:c546b51ecf0b | 41 | * } |
XkLi | 0:c546b51ecf0b | 42 | */ |
XkLi | 0:c546b51ecf0b | 43 | class SDFileSystem : public FATFileSystem { |
XkLi | 0:c546b51ecf0b | 44 | public: |
XkLi | 0:c546b51ecf0b | 45 | |
XkLi | 0:c546b51ecf0b | 46 | /** Create the File System for accessing an SD Card using SPI |
XkLi | 0:c546b51ecf0b | 47 | * |
XkLi | 0:c546b51ecf0b | 48 | * @param mosi SPI mosi pin connected to SD Card |
XkLi | 0:c546b51ecf0b | 49 | * @param miso SPI miso pin conencted to SD Card |
XkLi | 0:c546b51ecf0b | 50 | * @param sclk SPI sclk pin connected to SD Card |
XkLi | 0:c546b51ecf0b | 51 | * @param cs DigitalOut pin used as SD Card chip select |
XkLi | 0:c546b51ecf0b | 52 | * @param name The name used to access the virtual filesystem |
XkLi | 0:c546b51ecf0b | 53 | */ |
XkLi | 0:c546b51ecf0b | 54 | SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); |
XkLi | 0:c546b51ecf0b | 55 | virtual int disk_initialize(); |
XkLi | 0:c546b51ecf0b | 56 | virtual int disk_write(const char *buffer, int block_number); |
XkLi | 0:c546b51ecf0b | 57 | virtual int disk_read(char *buffer, int block_number); |
XkLi | 0:c546b51ecf0b | 58 | virtual int disk_status(); |
XkLi | 0:c546b51ecf0b | 59 | virtual int disk_sync(); |
XkLi | 0:c546b51ecf0b | 60 | virtual int disk_sectors(); |
XkLi | 0:c546b51ecf0b | 61 | |
XkLi | 0:c546b51ecf0b | 62 | protected: |
XkLi | 0:c546b51ecf0b | 63 | |
XkLi | 0:c546b51ecf0b | 64 | int _cmd(int cmd, int arg); |
XkLi | 0:c546b51ecf0b | 65 | int _cmdx(int cmd, int arg); |
XkLi | 0:c546b51ecf0b | 66 | int _cmd8(); |
XkLi | 0:c546b51ecf0b | 67 | int _cmd58(); |
XkLi | 0:c546b51ecf0b | 68 | int initialise_card(); |
XkLi | 0:c546b51ecf0b | 69 | int initialise_card_v1(); |
XkLi | 0:c546b51ecf0b | 70 | int initialise_card_v2(); |
XkLi | 0:c546b51ecf0b | 71 | |
XkLi | 0:c546b51ecf0b | 72 | int _read(char *buffer, int length); |
XkLi | 0:c546b51ecf0b | 73 | int _write(const char *buffer, int length); |
XkLi | 0:c546b51ecf0b | 74 | int _sd_sectors(); |
XkLi | 0:c546b51ecf0b | 75 | int _sectors; |
XkLi | 0:c546b51ecf0b | 76 | |
XkLi | 0:c546b51ecf0b | 77 | SPI _spi; |
XkLi | 0:c546b51ecf0b | 78 | DigitalOut _cs; |
XkLi | 0:c546b51ecf0b | 79 | }; |
XkLi | 0:c546b51ecf0b | 80 | |
XkLi | 0:c546b51ecf0b | 81 | #endif |