mirror of https://github.com/ArduPilot/ardupilot
192 lines
4.8 KiB
C++
192 lines
4.8 KiB
C++
/*
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night_ghost@ykoctpa.ru 2017
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a port of SparkFun's SD class to FatFs (c) Chan
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because it much better and faster than sdfatlib
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also it was rewritten to:
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* distinguish between flie at directory by stat(), not by try to open
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* provide last error code and its text description
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* added tracking of opened files for global sync()
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* some new functions added
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original SparkFun readme below
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----------------------------------------------
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SD - a slightly more friendly wrapper for sdfatlib
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This library aims to expose a subset of SD card functionality
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in the form of a higher level "wrapper" object.
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License: GNU General Public License V3
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(Because sdfatlib is licensed with this.)
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(C) Copyright 2010 SparkFun Electronics
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*/
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#ifndef __SD_H__
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#define __SD_H__
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#include <stdio.h>
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#include <util.h>
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#include <AP_HAL/AP_HAL.h>
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#if defined(BOARD_SDCARD_CS_PIN) || defined(BOARD_DATAFLASH_FATFS)
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#include "Sd2Card.h"
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#include "SdFatFs.h"
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// replace FatFs defines to standard ones
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/*
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#define FA_READ 0x01
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#define FA_OPEN_EXISTING 0x00
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#if !_FS_READONLY
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#define FA_WRITE 0x02
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#define FA_CREATE_NEW 0x04
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#define FA_CREATE_ALWAYS 0x08
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#define FA_OPEN_ALWAYS 0x10
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*/
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#define O_RDONLY FA_READ
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#define O_WRITE FA_WRITE
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#define O_RDWR FA_WRITE
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#define O_CREAT FA_CREATE_NEW // создать новый, если существует то ошибка
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#define O_TRUNC FA_CREATE_ALWAYS // переписать старый
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#define O_APPEND 0x20
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#define O_CLOEXEC 0x40
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#undef EEXIST
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#undef EACCES
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#undef EISDIR
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#undef ENOENT
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#define EEXIST FR_EXIST
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#define EACCES FR_DENIED
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#define EISDIR FR_IS_DIR
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#define ENOENT FR_NO_FILE
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// flags for ls()
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/** ls() flag to print modify date */
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uint8_t const LS_DATE = 1;
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/** ls() flag to print file size */
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uint8_t const LS_SIZE = 2;
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/** ls() flag for recursive list of subdirectories */
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uint8_t const LS_R = 4;
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typedef void (*cb_putc)(char c);
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class File {
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friend class SDClass;
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public:
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File(void);
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File(const char* name);
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size_t write(uint8_t);
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size_t write(const uint8_t *buf, size_t size);
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size_t write(const char *buf, size_t size);
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int read();
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UINT gets(char* buf, size_t len);
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int peek();
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int available();
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void flush();
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int read(void* buf, size_t len);
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uint8_t seek(uint32_t pos);
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uint32_t position();
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uint32_t size();
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void close();
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inline operator bool() const { return (_name == NULL)? FALSE : TRUE; } // is open?
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char* name(void);
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char* fullname(void) {return _name;};
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uint8_t isDirectory();
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File openNextFile(uint8_t mode = FILE_READ);
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void rewindDirectory(void);
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size_t print(const char* data);
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size_t println();
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size_t println(const char* data);
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// Print to Serial line
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void ls(cb_putc cb, uint8_t flags, uint8_t indent = 0);
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static void printFatDate(uint16_t fatDate, cb_putc cb);
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static void printFatTime(uint16_t fatTime, cb_putc cb);
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static void printTwoDigits(uint8_t v, cb_putc cb);
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static void printNumber(int16_t n, cb_putc cb);
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static void printStr(const char *s, cb_putc cb);
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void inline sync() { if(!is_dir) f_sync(&_d.fil); };
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inline uint32_t firstCluster(){ return is_dir ? _d.dir.obj.sclust : _d.fil.obj.sclust; }
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static void syncAll();
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static void addOpenFile(FIL *f);
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static void removeOpenFile(FIL *f);
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protected:
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// should be private?
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char *_name = NULL; //file or dir name
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#if 0
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FIL _fil; // each struct contains sector buffer so this casue twice of memory use
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DIR _dir;
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#else
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union {
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FIL fil; // each struct contains sector buffer so this casue twice of memory use
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DIR dir;
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} _d;
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bool is_dir;
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#endif
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// static list of all open files
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static FIL* openFiles[16];
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static uint8_t num_openFiles;
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};
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class SDClass {
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public:
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/* Initialize the SD peripheral */
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static uint8_t begin(AP_HAL::OwnPtr<F4Light::SPIDevice> spi);
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static File open(const char *filepath, uint8_t mode);
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static File open(const char *filepath);
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static uint8_t exists(const char *filepath);
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static uint8_t mkdir(const char *filepath);
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static uint8_t remove(const char *filepath);
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static uint8_t rmdir(const char *filepath);
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static uint32_t getfree(const char *filepath, uint32_t * fssize);
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static uint8_t stat(const char *filepath, FILINFO* fno);
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static uint8_t format(const char *filepath);
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File openRoot(void);
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void inline sync() { File::syncAll(); };
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friend class File;
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static inline Sd2Card *getCard() { return &_card; }
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static inline SdFatFs *getVolume() { return &_fatFs; }
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static FRESULT lastError;
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static const char * strError(FRESULT err){ return SdFatFs::strError(err); }
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private:
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static Sd2Card _card;
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static SdFatFs _fatFs;
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};
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extern SDClass SD;
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#endif
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#endif
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