Vergil Cola / SDFileSystem2

A fork of the original SDFileSystem, added only stat() for getting file information.

Dependents:   FRDM_K64F_IOT

Added code to the original SDFileSystem to export the stat() command. It would now be possible to get the FILEINFO struct of a directory entry to get information such as file size, etc.

SDFileSystem2 usage

#include "SDFileSystem.h"
SDFileSystem sd(p5,p6,p7,p8,"sd"); // mosi, miso, sck, cs 

static void cmd_ls(Stream * chp, int argc, char * argv[])
{
   DIR * dp;
   struct dirent * dirp;
   FILINFO fileInfo;
   char dirroot[256];
   
   if (argc >= 1)
       sprintf(dirroot, "/sd/%s", argv[0]);
   else
       sprintf(dirroot, "/sd");
   
   chp->printf("Listing directory [%s]\r\n", dirroot);
   
   dp = opendir(dirroot);			
   while((dirp = readdir(dp)) != NULL)
   {
       if (sd.stat(dirp->d_name, &fileInfo) == 0)
       {
           if (fileInfo.fattrib & AM_DIR )
                   chp->printf("<DIR>\t\t");
           else
                   chp->printf("%ld\t\t", fileInfo.fsize);
       }
       chp->printf("%s\r\n", dirp->d_name);
   }
   closedir(dp);
}

SDFileSystem.h@0:572d27f56fcd, 2015-04-28 (annotated)

Committer:
vpcola
Date:
Tue Apr 28 16:55:30 2015 +0000
Revision:
0:572d27f56fcd
Added stat() to get file information

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vpcola 0:572d27f56fcd 1 /* mbed Microcontroller Library
vpcola 0:572d27f56fcd 2 * Copyright (c) 2006-2012 ARM Limited
vpcola 0:572d27f56fcd 3 *
vpcola 0:572d27f56fcd 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
vpcola 0:572d27f56fcd 5 * of this software and associated documentation files (the "Software"), to deal
vpcola 0:572d27f56fcd 6 * in the Software without restriction, including without limitation the rights
vpcola 0:572d27f56fcd 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
vpcola 0:572d27f56fcd 8 * copies of the Software, and to permit persons to whom the Software is
vpcola 0:572d27f56fcd 9 * furnished to do so, subject to the following conditions:
vpcola 0:572d27f56fcd 10 *
vpcola 0:572d27f56fcd 11 * The above copyright notice and this permission notice shall be included in
vpcola 0:572d27f56fcd 12 * all copies or substantial portions of the Software.
vpcola 0:572d27f56fcd 13 *
vpcola 0:572d27f56fcd 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
vpcola 0:572d27f56fcd 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
vpcola 0:572d27f56fcd 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
vpcola 0:572d27f56fcd 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
vpcola 0:572d27f56fcd 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
vpcola 0:572d27f56fcd 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
vpcola 0:572d27f56fcd 20 * SOFTWARE.
vpcola 0:572d27f56fcd 21 */
vpcola 0:572d27f56fcd 22 #ifndef MBED_SDFILESYSTEM_H
vpcola 0:572d27f56fcd 23 #define MBED_SDFILESYSTEM_H
vpcola 0:572d27f56fcd 24
vpcola 0:572d27f56fcd 25 #include "mbed.h"
vpcola 0:572d27f56fcd 26 #include "FATFileSystem.h"
vpcola 0:572d27f56fcd 27 #include <stdint.h>
vpcola 0:572d27f56fcd 28
vpcola 0:572d27f56fcd 29 /** Access the filesystem on an SD Card using SPI
vpcola 0:572d27f56fcd 30 *
vpcola 0:572d27f56fcd 31 * @code
vpcola 0:572d27f56fcd 32 * #include "mbed.h"
vpcola 0:572d27f56fcd 33 * #include "SDFileSystem.h"
vpcola 0:572d27f56fcd 34 *
vpcola 0:572d27f56fcd 35 * SDFileSystem sd(p5, p6, p7, p12, "sd"); // MOSI, MISO, SCLK, SSEL
vpcola 0:572d27f56fcd 36 *
vpcola 0:572d27f56fcd 37 * int main() {
vpcola 0:572d27f56fcd 38 * FILE *fp = fopen("/sd/mbed.txt", "w");
vpcola 0:572d27f56fcd 39 * fprintf(fp, "Hello World!\n");
vpcola 0:572d27f56fcd 40 * fclose(fp);
vpcola 0:572d27f56fcd 41 * }
vpcola 0:572d27f56fcd 42 * @endcode
vpcola 0:572d27f56fcd 43 */
vpcola 0:572d27f56fcd 44 class SDFileSystem : public FATFileSystem {
vpcola 0:572d27f56fcd 45 public:
vpcola 0:572d27f56fcd 46
vpcola 0:572d27f56fcd 47 /** Create the File System for accessing an SD Card using SPI
vpcola 0:572d27f56fcd 48 *
vpcola 0:572d27f56fcd 49 * @param mosi SPI mosi pin connected to SD Card
vpcola 0:572d27f56fcd 50 * @param miso SPI miso pin conencted to SD Card
vpcola 0:572d27f56fcd 51 * @param sclk SPI sclk pin connected to SD Card
vpcola 0:572d27f56fcd 52 * @param cs DigitalOut pin used as SD Card chip select
vpcola 0:572d27f56fcd 53 * @param name The name used to access the virtual filesystem
vpcola 0:572d27f56fcd 54 */
vpcola 0:572d27f56fcd 55 SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
vpcola 0:572d27f56fcd 56
vpcola 0:572d27f56fcd 57 virtual int disk_initialize();
vpcola 0:572d27f56fcd 58 virtual int disk_status();
vpcola 0:572d27f56fcd 59 virtual int disk_read(uint8_t * buffer, uint64_t block_number);
vpcola 0:572d27f56fcd 60 virtual int disk_write(const uint8_t * buffer, uint64_t block_number);
vpcola 0:572d27f56fcd 61 virtual int disk_sync();
vpcola 0:572d27f56fcd 62 virtual uint64_t disk_sectors();
vpcola 0:572d27f56fcd 63
vpcola 0:572d27f56fcd 64 protected:
vpcola 0:572d27f56fcd 65
vpcola 0:572d27f56fcd 66 int _cmd(int cmd, int arg);
vpcola 0:572d27f56fcd 67 int _cmdx(int cmd, int arg);
vpcola 0:572d27f56fcd 68 int _cmd8();
vpcola 0:572d27f56fcd 69 int _cmd58();
vpcola 0:572d27f56fcd 70 int initialise_card();
vpcola 0:572d27f56fcd 71 int initialise_card_v1();
vpcola 0:572d27f56fcd 72 int initialise_card_v2();
vpcola 0:572d27f56fcd 73
vpcola 0:572d27f56fcd 74 int _read(uint8_t * buffer, uint32_t length);
vpcola 0:572d27f56fcd 75 int _write(const uint8_t *buffer, uint32_t length);
vpcola 0:572d27f56fcd 76 uint64_t _sd_sectors();
vpcola 0:572d27f56fcd 77 uint64_t _sectors;
vpcola 0:572d27f56fcd 78
vpcola 0:572d27f56fcd 79 SPI _spi;
vpcola 0:572d27f56fcd 80 DigitalOut _cs;
vpcola 0:572d27f56fcd 81 int cdv;
vpcola 0:572d27f56fcd 82 };
vpcola 0:572d27f56fcd 83
vpcola 0:572d27f56fcd 84 #endif