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Web server based weather station using Sparkfun Weather Meters.

Dependencies: FatFileSystem mbed WeatherMeters SDFileSystem

FatFileSystem/FATFileSystem.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 - FATFileSystem
AdamGreen	0:616601bde9fb	2	* Copyright (c) 2008, sford
AdamGreen	0:616601bde9fb	3	*/
AdamGreen	0:616601bde9fb	4
AdamGreen	0:616601bde9fb	5	#include "FATFileSystem.h"
AdamGreen	0:616601bde9fb	6
AdamGreen	0:616601bde9fb	7	#include "mbed.h"
AdamGreen	0:616601bde9fb	8
AdamGreen	0:616601bde9fb	9	#include "FileSystemLike.h"
AdamGreen	0:616601bde9fb	10	#include "FATFileHandle.h"
AdamGreen	0:616601bde9fb	11	#include "FATDirHandle.h"
AdamGreen	0:616601bde9fb	12	#include "ff.h"
AdamGreen	0:616601bde9fb	13	//#include "Debug.h"
AdamGreen	0:616601bde9fb	14	#include <stdio.h>
AdamGreen	0:616601bde9fb	15	#include <stdlib.h>
AdamGreen	0:616601bde9fb	16
AdamGreen	0:616601bde9fb	17	DWORD get_fattime (void) {
AdamGreen	0:616601bde9fb	18	return 999;
AdamGreen	0:616601bde9fb	19	}
AdamGreen	0:616601bde9fb	20
AdamGreen	0:616601bde9fb	21	namespace mbed {
AdamGreen	0:616601bde9fb	22
AdamGreen	0:616601bde9fb	23	#if FFSDEBUG_ENABLED
AdamGreen	0:616601bde9fb	24	static const char *FR_ERRORS[] = {
AdamGreen	0:616601bde9fb	25	"FR_OK = 0",
AdamGreen	0:616601bde9fb	26	"FR_NOT_READY",
AdamGreen	0:616601bde9fb	27	"FR_NO_FILE",
AdamGreen	0:616601bde9fb	28	"FR_NO_PATH",
AdamGreen	0:616601bde9fb	29	"FR_INVALID_NAME",
AdamGreen	0:616601bde9fb	30	"FR_INVALID_DRIVE",
AdamGreen	0:616601bde9fb	31	"FR_DENIED",
AdamGreen	0:616601bde9fb	32	"FR_EXIST",
AdamGreen	0:616601bde9fb	33	"FR_RW_ERROR",
AdamGreen	0:616601bde9fb	34	"FR_WRITE_PROTECTED",
AdamGreen	0:616601bde9fb	35	"FR_NOT_ENABLED",
AdamGreen	0:616601bde9fb	36	"FR_NO_FILESYSTEM",
AdamGreen	0:616601bde9fb	37	"FR_INVALID_OBJECT",
AdamGreen	0:616601bde9fb	38	"FR_MKFS_ABORTED"
AdamGreen	0:616601bde9fb	39	};
AdamGreen	0:616601bde9fb	40	#endif
AdamGreen	0:616601bde9fb	41
AdamGreen	0:616601bde9fb	42	FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
AdamGreen	0:616601bde9fb	43
AdamGreen	0:616601bde9fb	44	FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
AdamGreen	0:616601bde9fb	45	FFSDEBUG("FATFileSystem(%s)\n", n);
AdamGreen	0:616601bde9fb	46	for(int i=0; i<_VOLUMES; i++) {
AdamGreen	0:616601bde9fb	47	if(_ffs[i] == 0) {
AdamGreen	0:616601bde9fb	48	_ffs[i] = this;
AdamGreen	0:616601bde9fb	49	_fsid = i;
AdamGreen	0:616601bde9fb	50	FFSDEBUG("Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
AdamGreen	0:616601bde9fb	51	f_mount(i, &_fs);
AdamGreen	0:616601bde9fb	52	return;
AdamGreen	0:616601bde9fb	53	}
AdamGreen	0:616601bde9fb	54	}
AdamGreen	0:616601bde9fb	55	error("Couldn't create %s in FATFileSystem::FATFileSystem\n",n);
AdamGreen	0:616601bde9fb	56	}
AdamGreen	0:616601bde9fb	57
AdamGreen	0:616601bde9fb	58	FATFileSystem::~FATFileSystem() {
AdamGreen	0:616601bde9fb	59	for(int i=0; i<_VOLUMES; i++) {
AdamGreen	0:616601bde9fb	60	if(_ffs[i] == this) {
AdamGreen	0:616601bde9fb	61	_ffs[i] = 0;
AdamGreen	0:616601bde9fb	62	f_mount(i, NULL);
AdamGreen	0:616601bde9fb	63	}
AdamGreen	0:616601bde9fb	64	}
AdamGreen	0:616601bde9fb	65	}
AdamGreen	0:616601bde9fb	66
AdamGreen	0:616601bde9fb	67	FileHandle FATFileSystem::open(const char name, int flags) {
AdamGreen	0:616601bde9fb	68	FFSDEBUG("open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
AdamGreen	0:616601bde9fb	69	char n[64];
AdamGreen	0:616601bde9fb	70	sprintf(n, "%d:/%s", _fsid, name);
AdamGreen	0:616601bde9fb	71
AdamGreen	0:616601bde9fb	72	/* POSIX flags -> FatFS open mode */
AdamGreen	0:616601bde9fb	73	BYTE openmode;
AdamGreen	0:616601bde9fb	74	if(flags & O_RDWR) {
AdamGreen	0:616601bde9fb	75	openmode = FA_READ\|FA_WRITE;
AdamGreen	0:616601bde9fb	76	} else if(flags & O_WRONLY) {
AdamGreen	0:616601bde9fb	77	openmode = FA_WRITE;
AdamGreen	0:616601bde9fb	78	} else {
AdamGreen	0:616601bde9fb	79	openmode = FA_READ;
AdamGreen	0:616601bde9fb	80	}
AdamGreen	0:616601bde9fb	81	if(flags & O_CREAT) {
AdamGreen	0:616601bde9fb	82	if(flags & O_TRUNC) {
AdamGreen	0:616601bde9fb	83	openmode \|= FA_CREATE_ALWAYS;
AdamGreen	0:616601bde9fb	84	} else {
AdamGreen	0:616601bde9fb	85	openmode \|= FA_OPEN_ALWAYS;
AdamGreen	0:616601bde9fb	86	}
AdamGreen	0:616601bde9fb	87	}
AdamGreen	0:616601bde9fb	88
AdamGreen	0:616601bde9fb	89	FIL fh;
AdamGreen	0:616601bde9fb	90	FRESULT res = f_open(&fh, n, openmode);
AdamGreen	0:616601bde9fb	91	if(res) {
AdamGreen	0:616601bde9fb	92	FFSDEBUG("f_open('w') failed (%d, %s)\n", res, FR_ERRORS[res]);
AdamGreen	0:616601bde9fb	93	return NULL;
AdamGreen	0:616601bde9fb	94	}
AdamGreen	0:616601bde9fb	95	if(flags & O_APPEND) {
AdamGreen	0:616601bde9fb	96	f_lseek(&fh, fh.fsize);
AdamGreen	0:616601bde9fb	97	}
AdamGreen	0:616601bde9fb	98	return new FATFileHandle(fh);
AdamGreen	0:616601bde9fb	99	}
AdamGreen	0:616601bde9fb	100
AdamGreen	0:616601bde9fb	101	int FATFileSystem::remove(const char *filename) {
AdamGreen	0:616601bde9fb	102	FRESULT res = f_unlink(filename);
AdamGreen	0:616601bde9fb	103	if(res) {
AdamGreen	0:616601bde9fb	104	FFSDEBUG("f_unlink() failed (%d, %s)\n", res, FR_ERRORS[res]);
AdamGreen	0:616601bde9fb	105	return -1;
AdamGreen	0:616601bde9fb	106	}
AdamGreen	0:616601bde9fb	107	return 0;
AdamGreen	0:616601bde9fb	108	}
AdamGreen	0:616601bde9fb	109
AdamGreen	0:616601bde9fb	110	int FATFileSystem::format() {
AdamGreen	0:616601bde9fb	111	FFSDEBUG("format()\n");
AdamGreen	0:616601bde9fb	112	FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
AdamGreen	0:616601bde9fb	113	if(res) {
AdamGreen	0:616601bde9fb	114	FFSDEBUG("f_mkfs() failed (%d, %s)\n", res, FR_ERRORS[res]);
AdamGreen	0:616601bde9fb	115	return -1;
AdamGreen	0:616601bde9fb	116	}
AdamGreen	0:616601bde9fb	117	return 0;
AdamGreen	0:616601bde9fb	118	}
AdamGreen	0:616601bde9fb	119
AdamGreen	0:616601bde9fb	120	DirHandle FATFileSystem::opendir(const char name) {
AdamGreen	0:616601bde9fb	121	FATFS_DIR dir;
AdamGreen	0:616601bde9fb	122	FRESULT res = f_opendir(&dir, name);
AdamGreen	0:616601bde9fb	123	if(res != 0) {
AdamGreen	0:616601bde9fb	124	return NULL;
AdamGreen	0:616601bde9fb	125	}
AdamGreen	0:616601bde9fb	126	return new FATDirHandle(dir);
AdamGreen	0:616601bde9fb	127	}
AdamGreen	0:616601bde9fb	128
AdamGreen	0:616601bde9fb	129	int FATFileSystem::mkdir(const char *name, mode_t mode) {
AdamGreen	0:616601bde9fb	130	FRESULT res = f_mkdir(name);
AdamGreen	0:616601bde9fb	131	return res == 0 ? 0 : -1;
AdamGreen	0:616601bde9fb	132	}
AdamGreen	0:616601bde9fb	133
AdamGreen	0:616601bde9fb	134	} // namespace mbed

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	23 Feb 2012
Imports:	113
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	4
Followers:	6

FatFileSystem/FATFileSystem.cpp@0:616601bde9fb, 2012-02-23 (annotated)

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