Adam Green
Web server based weather station using Sparkfun Weather Meters.
Dependencies: FatFileSystem mbed WeatherMeters SDFileSystem
FatFileSystem/FATFileHandle.cpp@0:616601bde9fb, 2012-02-23 (annotated)
- Committer:
- AdamGreen
- Date:
- Thu Feb 23 21:38:39 2012 +0000
- Revision:
- 0:616601bde9fb
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| AdamGreen | 0:616601bde9fb | 1 | /* mbed Microcontroller Library - FATFileHandle |
| AdamGreen | 0:616601bde9fb | 2 | * Copyright (c) 2008, sford |
| AdamGreen | 0:616601bde9fb | 3 | */ |
| AdamGreen | 0:616601bde9fb | 4 | |
| AdamGreen | 0:616601bde9fb | 5 | #include "FATFileHandle.h" |
| AdamGreen | 0:616601bde9fb | 6 | |
| AdamGreen | 0:616601bde9fb | 7 | #include <stdio.h> |
| AdamGreen | 0:616601bde9fb | 8 | #include <stdlib.h> |
| AdamGreen | 0:616601bde9fb | 9 | #include "ff.h" |
| AdamGreen | 0:616601bde9fb | 10 | #include "FATFileSystem.h" |
| AdamGreen | 0:616601bde9fb | 11 | |
| AdamGreen | 0:616601bde9fb | 12 | namespace mbed { |
| AdamGreen | 0:616601bde9fb | 13 | |
| AdamGreen | 0:616601bde9fb | 14 | #if FFSDEBUG_ENABLED |
| AdamGreen | 0:616601bde9fb | 15 | static const char *FR_ERRORS[] = { |
| AdamGreen | 0:616601bde9fb | 16 | "FR_OK = 0", |
| AdamGreen | 0:616601bde9fb | 17 | "FR_NOT_READY", |
| AdamGreen | 0:616601bde9fb | 18 | "FR_NO_FILE", |
| AdamGreen | 0:616601bde9fb | 19 | "FR_NO_PATH", |
| AdamGreen | 0:616601bde9fb | 20 | "FR_INVALID_NAME", |
| AdamGreen | 0:616601bde9fb | 21 | "FR_INVALID_DRIVE", |
| AdamGreen | 0:616601bde9fb | 22 | "FR_DENIED", |
| AdamGreen | 0:616601bde9fb | 23 | "FR_EXIST", |
| AdamGreen | 0:616601bde9fb | 24 | "FR_RW_ERROR", |
| AdamGreen | 0:616601bde9fb | 25 | "FR_WRITE_PROTECTED", |
| AdamGreen | 0:616601bde9fb | 26 | "FR_NOT_ENABLED", |
| AdamGreen | 0:616601bde9fb | 27 | "FR_NO_FILESYSTEM", |
| AdamGreen | 0:616601bde9fb | 28 | "FR_INVALID_OBJECT", |
| AdamGreen | 0:616601bde9fb | 29 | "FR_MKFS_ABORTED" |
| AdamGreen | 0:616601bde9fb | 30 | }; |
| AdamGreen | 0:616601bde9fb | 31 | #endif |
| AdamGreen | 0:616601bde9fb | 32 | |
| AdamGreen | 0:616601bde9fb | 33 | FATFileHandle::FATFileHandle(FIL fh) { |
| AdamGreen | 0:616601bde9fb | 34 | _fh = fh; |
| AdamGreen | 0:616601bde9fb | 35 | } |
| AdamGreen | 0:616601bde9fb | 36 | |
| AdamGreen | 0:616601bde9fb | 37 | int FATFileHandle::close() { |
| AdamGreen | 0:616601bde9fb | 38 | FFSDEBUG("close\n"); |
| AdamGreen | 0:616601bde9fb | 39 | int retval = f_close(&_fh); |
| AdamGreen | 0:616601bde9fb | 40 | delete this; |
| AdamGreen | 0:616601bde9fb | 41 | return retval; |
| AdamGreen | 0:616601bde9fb | 42 | } |
| AdamGreen | 0:616601bde9fb | 43 | |
| AdamGreen | 0:616601bde9fb | 44 | ssize_t FATFileHandle::write(const void* buffer, size_t length) { |
| AdamGreen | 0:616601bde9fb | 45 | FFSDEBUG("write(%d)\n", length); |
| AdamGreen | 0:616601bde9fb | 46 | UINT n; |
| AdamGreen | 0:616601bde9fb | 47 | FRESULT res = f_write(&_fh, buffer, length, &n); |
| AdamGreen | 0:616601bde9fb | 48 | if(res) { |
| AdamGreen | 0:616601bde9fb | 49 | FFSDEBUG("f_write() failed (%d, %s)", res, FR_ERRORS[res]); |
| AdamGreen | 0:616601bde9fb | 50 | return -1; |
| AdamGreen | 0:616601bde9fb | 51 | } |
| AdamGreen | 0:616601bde9fb | 52 | return n; |
| AdamGreen | 0:616601bde9fb | 53 | } |
| AdamGreen | 0:616601bde9fb | 54 | |
| AdamGreen | 0:616601bde9fb | 55 | ssize_t FATFileHandle::read(void* buffer, size_t length) { |
| AdamGreen | 0:616601bde9fb | 56 | FFSDEBUG("read(%d)\n", length); |
| AdamGreen | 0:616601bde9fb | 57 | UINT n; |
| AdamGreen | 0:616601bde9fb | 58 | FRESULT res = f_read(&_fh, buffer, length, &n); |
| AdamGreen | 0:616601bde9fb | 59 | if(res) { |
| AdamGreen | 0:616601bde9fb | 60 | FFSDEBUG("f_read() failed (%d, %s)\n", res, FR_ERRORS[res]); |
| AdamGreen | 0:616601bde9fb | 61 | return -1; |
| AdamGreen | 0:616601bde9fb | 62 | } |
| AdamGreen | 0:616601bde9fb | 63 | return n; |
| AdamGreen | 0:616601bde9fb | 64 | } |
| AdamGreen | 0:616601bde9fb | 65 | |
| AdamGreen | 0:616601bde9fb | 66 | int FATFileHandle::isatty() { |
| AdamGreen | 0:616601bde9fb | 67 | return 0; |
| AdamGreen | 0:616601bde9fb | 68 | } |
| AdamGreen | 0:616601bde9fb | 69 | |
| AdamGreen | 0:616601bde9fb | 70 | off_t FATFileHandle::lseek(off_t position, int whence) { |
| AdamGreen | 0:616601bde9fb | 71 | FFSDEBUG("lseek(%i,%i)\n",position,whence); |
| AdamGreen | 0:616601bde9fb | 72 | if(whence == SEEK_END) { |
| AdamGreen | 0:616601bde9fb | 73 | position += _fh.fsize; |
| AdamGreen | 0:616601bde9fb | 74 | } else if(whence==SEEK_CUR) { |
| AdamGreen | 0:616601bde9fb | 75 | position += _fh.fptr; |
| AdamGreen | 0:616601bde9fb | 76 | } |
| AdamGreen | 0:616601bde9fb | 77 | FRESULT res = f_lseek(&_fh, position); |
| AdamGreen | 0:616601bde9fb | 78 | if(res) { |
| AdamGreen | 0:616601bde9fb | 79 | FFSDEBUG("lseek failed (%d, %s)\n", res, FR_ERRORS[res]); |
| AdamGreen | 0:616601bde9fb | 80 | return -1; |
| AdamGreen | 0:616601bde9fb | 81 | } else { |
| AdamGreen | 0:616601bde9fb | 82 | FFSDEBUG("lseek OK, returning %i\n", _fh.fptr); |
| AdamGreen | 0:616601bde9fb | 83 | return _fh.fptr; |
| AdamGreen | 0:616601bde9fb | 84 | } |
| AdamGreen | 0:616601bde9fb | 85 | } |
| AdamGreen | 0:616601bde9fb | 86 | |
| AdamGreen | 0:616601bde9fb | 87 | int FATFileHandle::fsync() { |
| AdamGreen | 0:616601bde9fb | 88 | FFSDEBUG("fsync()\n"); |
| AdamGreen | 0:616601bde9fb | 89 | FRESULT res = f_sync(&_fh); |
| AdamGreen | 0:616601bde9fb | 90 | if (res) { |
| AdamGreen | 0:616601bde9fb | 91 | FFSDEBUG("f_sync() failed (%d, %s)\n", res, FR_ERRORS[res]); |
| AdamGreen | 0:616601bde9fb | 92 | return -1; |
| AdamGreen | 0:616601bde9fb | 93 | } |
| AdamGreen | 0:616601bde9fb | 94 | return 0; |
| AdamGreen | 0:616601bde9fb | 95 | } |
| AdamGreen | 0:616601bde9fb | 96 | |
| AdamGreen | 0:616601bde9fb | 97 | off_t FATFileHandle::flen() { |
| AdamGreen | 0:616601bde9fb | 98 | FFSDEBUG("flen\n"); |
| AdamGreen | 0:616601bde9fb | 99 | return _fh.fsize; |
| AdamGreen | 0:616601bde9fb | 100 | } |
| AdamGreen | 0:616601bde9fb | 101 | |
| AdamGreen | 0:616601bde9fb | 102 | } // namespace mbed |