Samir Bouaziz / FileSystem_POPS

A File System interface that incorporates both SD and USB support. It was difficult to find a ready-to-go library, but the right set of pieces from others, and a few modifications, created this.

Dependencies:   FatFileSystemCpp USBHostLite

Dependents:   m3PI_TP_POPS_II2015v0 m3PI_TP_POPS_II2015v0 ourproject m3PI_TP_SETI ... more

MSCFileSystem.cpp@2:5bc5d2b70622, 2013-11-10 (annotated)

Committer:
bouaziz
Date:
Sun Nov 10 21:01:29 2013 +0000
Revision:
2:5bc5d2b70622
Parent:
0:7304356c0790 
Just simple modification to maje this lib usable by our students Polytech Paris Sud Undergraduate School  in university of Paris Sud Orsay;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WiredHome 0:7304356c0790 1 /* USB Mass Storage device file system
WiredHome 0:7304356c0790 2 * Copyrigh (c) 2010, Igor Skochinsky
WiredHome 0:7304356c0790 3 * based on SDFileStorage
WiredHome 0:7304356c0790 4 * Copyright (c) 2008-2009, sford
WiredHome 0:7304356c0790 5 */
WiredHome 0:7304356c0790 6
WiredHome 0:7304356c0790 7 /* Introduction
WiredHome 0:7304356c0790 8 * ------------
WiredHome 0:7304356c0790 9 * TODO: write one
WiredHome 0:7304356c0790 10 * we're basically using NXP's USBHotLite sample code, just plugging in our own FAT library
WiredHome 0:7304356c0790 11 */
WiredHome 0:7304356c0790 12
WiredHome 0:7304356c0790 13 #include "MSCFileSystem.h"
WiredHome 0:7304356c0790 14 #include "usbhost_inc.h"
WiredHome 0:7304356c0790 15
WiredHome 0:7304356c0790 16 MSCFileSystem::MSCFileSystem(const char* name) :
WiredHome 0:7304356c0790 17 FATFileSystem(name)
WiredHome 0:7304356c0790 18 {
WiredHome 0:7304356c0790 19 }
WiredHome 0:7304356c0790 20
WiredHome 0:7304356c0790 21 void print_inquiry(USB_INT08U *inqReply)
WiredHome 0:7304356c0790 22 {
WiredHome 0:7304356c0790 23 // see USB Mass Storage Class – UFI Command Specification,
WiredHome 0:7304356c0790 24 // 4.2 INQUIRY Command
WiredHome 0:7304356c0790 25 printf("Inquiry reply:\r\n");
WiredHome 0:7304356c0790 26 uint8_t tmp = inqReply[0]&0x1F;
WiredHome 0:7304356c0790 27 printf("Peripheral device type: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 28 if ( tmp == 0 )
WiredHome 0:7304356c0790 29 printf("\t- Direct access (floppy)\r\n");
WiredHome 0:7304356c0790 30 else if ( tmp == 0x1F )
WiredHome 0:7304356c0790 31 printf("\t- none (no FDD connected)\r\n");
WiredHome 0:7304356c0790 32 else
WiredHome 0:7304356c0790 33 printf("\t- unknown type\r\n");
WiredHome 0:7304356c0790 34 tmp = inqReply[1] >> 7;
WiredHome 0:7304356c0790 35 printf("Removable Media Bit: %d\r\n", tmp);
WiredHome 0:7304356c0790 36 tmp = inqReply[2] & 3;
WiredHome 0:7304356c0790 37 printf("ANSI Version: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 38 if ( tmp != 0 )
WiredHome 0:7304356c0790 39 printf("\t- warning! must be 0\r\n");
WiredHome 0:7304356c0790 40 tmp = (inqReply[2]>>3) & 3;
WiredHome 0:7304356c0790 41 printf("ECMA Version: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 42 if ( tmp != 0 )
WiredHome 0:7304356c0790 43 printf("\t- warning! should be 0\r\n");
WiredHome 0:7304356c0790 44 tmp = inqReply[2]>>6;
WiredHome 0:7304356c0790 45 printf("ISO Version: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 46 if ( tmp != 0 )
WiredHome 0:7304356c0790 47 printf("\t- warning! should be 0\r\n");
WiredHome 0:7304356c0790 48 tmp = inqReply[3] & 0xF;
WiredHome 0:7304356c0790 49 printf("Response Data Format: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 50 if ( tmp != 1 )
WiredHome 0:7304356c0790 51 printf("\t- warning! should be 1\r\n");
WiredHome 0:7304356c0790 52 tmp = inqReply[4];
WiredHome 0:7304356c0790 53 printf("Additional length: %02Xh\r\n", tmp);
WiredHome 0:7304356c0790 54 if ( tmp != 0x1F )
WiredHome 0:7304356c0790 55 printf("\t- warning! should be 1Fh\r\n");
WiredHome 0:7304356c0790 56 printf("Vendor Information: '%.8s'\r\n", &inqReply[8]);
WiredHome 0:7304356c0790 57 printf("Product Identification: '%.16s'\r\n", &inqReply[16]);
WiredHome 0:7304356c0790 58 printf("Product Revision: '%.4s'\r\n", &inqReply[32]);
WiredHome 0:7304356c0790 59 }
WiredHome 0:7304356c0790 60
WiredHome 0:7304356c0790 61 int MSCFileSystem::initialise_msc()
WiredHome 0:7304356c0790 62 {
WiredHome 0:7304356c0790 63 USB_INT32S rc;
WiredHome 0:7304356c0790 64 USB_INT08U inquiryResult[INQUIRY_LENGTH];
WiredHome 0:7304356c0790 65
WiredHome 0:7304356c0790 66 //print_clock();
WiredHome 0:7304356c0790 67 Host_Init(); /* Initialize the host controller */
WiredHome 0:7304356c0790 68 rc = Host_EnumDev(); /* Enumerate the device connected */
WiredHome 0:7304356c0790 69 if (rc != OK)
WiredHome 0:7304356c0790 70 {
WiredHome 0:7304356c0790 71 fprintf(stderr, "Could not enumerate device: %d\r\n", rc);
WiredHome 0:7304356c0790 72 return rc;
WiredHome 0:7304356c0790 73 }
WiredHome 0:7304356c0790 74
WiredHome 0:7304356c0790 75
WiredHome 0:7304356c0790 76 /* Initialize the mass storage and scsi interfaces */
WiredHome 0:7304356c0790 77 rc = MS_Init( &_blkSize, &_numBlks, inquiryResult );
WiredHome 0:7304356c0790 78 if (rc != OK)
WiredHome 0:7304356c0790 79 {
WiredHome 0:7304356c0790 80 fprintf(stderr, "Could not initialize mass storage interface: %d\r\n", rc);
WiredHome 0:7304356c0790 81 return rc;
WiredHome 0:7304356c0790 82 }
WiredHome 0:7304356c0790 83 //printf("Successfully initialized mass storage interface; %d blocks of size %d\r\n", _numBlks, _blkSize);
WiredHome 0:7304356c0790 84 //print_inquiry(inquiryResult);
WiredHome 0:7304356c0790 85 // FATFileSystem supports only 512-byte blocks
WiredHome 0:7304356c0790 86 return _blkSize == 512 ? OK : 1;
WiredHome 0:7304356c0790 87 }
WiredHome 0:7304356c0790 88
WiredHome 0:7304356c0790 89 int MSCFileSystem::disk_initialize()
WiredHome 0:7304356c0790 90 {
WiredHome 0:7304356c0790 91 if ( initialise_msc() != OK )
WiredHome 0:7304356c0790 92 return 1;
WiredHome 0:7304356c0790 93
WiredHome 0:7304356c0790 94 return 0;
WiredHome 0:7304356c0790 95 }
WiredHome 0:7304356c0790 96
WiredHome 0:7304356c0790 97 int MSCFileSystem::disk_write(const char *buffer, int block_number)
WiredHome 0:7304356c0790 98 {
WiredHome 0:7304356c0790 99 if ( OK == MS_BulkSend(block_number, 1, (USB_INT08U *)buffer) )
WiredHome 0:7304356c0790 100 return 0;
WiredHome 0:7304356c0790 101 return 1;
WiredHome 0:7304356c0790 102 }
WiredHome 0:7304356c0790 103
WiredHome 0:7304356c0790 104 int MSCFileSystem::disk_read(char *buffer, int block_number)
WiredHome 0:7304356c0790 105 {
WiredHome 0:7304356c0790 106 if ( OK == MS_BulkRecv(block_number, 1, (USB_INT08U *)buffer) )
WiredHome 0:7304356c0790 107 return 0;
WiredHome 0:7304356c0790 108 return 1;
WiredHome 0:7304356c0790 109 }
WiredHome 0:7304356c0790 110
WiredHome 0:7304356c0790 111 int MSCFileSystem::disk_status() { return 0; }
WiredHome 0:7304356c0790 112 int MSCFileSystem::disk_sync() { return 0; }
WiredHome 0:7304356c0790 113 int MSCFileSystem::disk_sectors() { return _numBlks; }