Harris Junaid
Wireless Gas Meter Reading System Data Logger
MSCFileSystem.cpp@0:a67cda7c126f, 2012-04-17 (annotated)
- Committer:
- harrisjunaid
- Date:
- Tue Apr 17 15:54:02 2012 +0000
- Revision:
- 0:a67cda7c126f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| harrisjunaid | 0:a67cda7c126f | 1 | /* USB Mass Storage device file system |
| harrisjunaid | 0:a67cda7c126f | 2 | * Copyrigh (c) 2010, Igor Skochinsky |
| harrisjunaid | 0:a67cda7c126f | 3 | * based on SDFileStorage |
| harrisjunaid | 0:a67cda7c126f | 4 | * Copyright (c) 2008-2009, sford |
| harrisjunaid | 0:a67cda7c126f | 5 | */ |
| harrisjunaid | 0:a67cda7c126f | 6 | |
| harrisjunaid | 0:a67cda7c126f | 7 | /* Introduction |
| harrisjunaid | 0:a67cda7c126f | 8 | * ------------ |
| harrisjunaid | 0:a67cda7c126f | 9 | * TODO: write one |
| harrisjunaid | 0:a67cda7c126f | 10 | * we're basically using NXP's USBHotLite sample code, just plugging in our own FAT library |
| harrisjunaid | 0:a67cda7c126f | 11 | */ |
| harrisjunaid | 0:a67cda7c126f | 12 | |
| harrisjunaid | 0:a67cda7c126f | 13 | #include "MSCFileSystem.h" |
| harrisjunaid | 0:a67cda7c126f | 14 | #include "usbhost_inc.h" |
| harrisjunaid | 0:a67cda7c126f | 15 | |
| harrisjunaid | 0:a67cda7c126f | 16 | MSCFileSystem::MSCFileSystem(const char* name) : |
| harrisjunaid | 0:a67cda7c126f | 17 | FATFileSystem(name) |
| harrisjunaid | 0:a67cda7c126f | 18 | { |
| harrisjunaid | 0:a67cda7c126f | 19 | } |
| harrisjunaid | 0:a67cda7c126f | 20 | |
| harrisjunaid | 0:a67cda7c126f | 21 | void print_inquiry(USB_INT08U *inqReply) |
| harrisjunaid | 0:a67cda7c126f | 22 | { |
| harrisjunaid | 0:a67cda7c126f | 23 | // see USB Mass Storage Class UFI Command Specification, |
| harrisjunaid | 0:a67cda7c126f | 24 | // 4.2 INQUIRY Command |
| harrisjunaid | 0:a67cda7c126f | 25 | // printf("Inquiry reply:\n"); |
| harrisjunaid | 0:a67cda7c126f | 26 | uint8_t tmp = inqReply[0]&0x1F; |
| harrisjunaid | 0:a67cda7c126f | 27 | // printf("Peripheral device type: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 28 | if ( tmp == 0 ); |
| harrisjunaid | 0:a67cda7c126f | 29 | // printf("\t- Direct access (floppy)\n"); |
| harrisjunaid | 0:a67cda7c126f | 30 | else if ( tmp == 0x1F ); |
| harrisjunaid | 0:a67cda7c126f | 31 | |
| harrisjunaid | 0:a67cda7c126f | 32 | // printf("\t- none (no FDD connected)\n"); |
| harrisjunaid | 0:a67cda7c126f | 33 | else; |
| harrisjunaid | 0:a67cda7c126f | 34 | // printf("\t- unknown type\n"); |
| harrisjunaid | 0:a67cda7c126f | 35 | tmp = inqReply[1] >> 7; |
| harrisjunaid | 0:a67cda7c126f | 36 | // printf("Removable Media Bit: %d\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 37 | tmp = inqReply[2] & 3; |
| harrisjunaid | 0:a67cda7c126f | 38 | // printf("ANSI Version: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 39 | if ( tmp != 0 ) |
| harrisjunaid | 0:a67cda7c126f | 40 | // printf("\t- warning! must be 0\n"); |
| harrisjunaid | 0:a67cda7c126f | 41 | tmp = (inqReply[2]>>3) & 3; |
| harrisjunaid | 0:a67cda7c126f | 42 | // printf("ECMA Version: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 43 | if ( tmp != 0 ) |
| harrisjunaid | 0:a67cda7c126f | 44 | // printf("\t- warning! should be 0\n"); |
| harrisjunaid | 0:a67cda7c126f | 45 | tmp = inqReply[2]>>6; |
| harrisjunaid | 0:a67cda7c126f | 46 | // printf("ISO Version: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 47 | if ( tmp != 0 ) |
| harrisjunaid | 0:a67cda7c126f | 48 | // printf("\t- warning! should be 0\n"); |
| harrisjunaid | 0:a67cda7c126f | 49 | tmp = inqReply[3] & 0xF; |
| harrisjunaid | 0:a67cda7c126f | 50 | // printf("Response Data Format: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 51 | if ( tmp != 1 ) |
| harrisjunaid | 0:a67cda7c126f | 52 | // printf("\t- warning! should be 1\n"); |
| harrisjunaid | 0:a67cda7c126f | 53 | tmp = inqReply[4]; |
| harrisjunaid | 0:a67cda7c126f | 54 | // printf("Additional length: %02Xh\n", tmp); |
| harrisjunaid | 0:a67cda7c126f | 55 | if ( tmp != 0x1F ); |
| harrisjunaid | 0:a67cda7c126f | 56 | // printf("\t- warning! should be 1Fh\n"); |
| harrisjunaid | 0:a67cda7c126f | 57 | // printf("Vendor Information: '%.8s'\n", &inqReply[8]); |
| harrisjunaid | 0:a67cda7c126f | 58 | //printf("Product Identification: '%.16s'\n", &inqReply[16]); |
| harrisjunaid | 0:a67cda7c126f | 59 | //printf("Product Revision: '%.4s'\n", &inqReply[32]); |
| harrisjunaid | 0:a67cda7c126f | 60 | } |
| harrisjunaid | 0:a67cda7c126f | 61 | |
| harrisjunaid | 0:a67cda7c126f | 62 | int MSCFileSystem::initialise_msc() |
| harrisjunaid | 0:a67cda7c126f | 63 | { |
| harrisjunaid | 0:a67cda7c126f | 64 | USB_INT32S rc; |
| harrisjunaid | 0:a67cda7c126f | 65 | USB_INT08U inquiryResult[INQUIRY_LENGTH]; |
| harrisjunaid | 0:a67cda7c126f | 66 | |
| harrisjunaid | 0:a67cda7c126f | 67 | //print_clock(); |
| harrisjunaid | 0:a67cda7c126f | 68 | Host_Init(); /* Initialize the host controller */ |
| harrisjunaid | 0:a67cda7c126f | 69 | rc = Host_EnumDev(); /* Enumerate the device connected */ |
| harrisjunaid | 0:a67cda7c126f | 70 | if (rc != OK) |
| harrisjunaid | 0:a67cda7c126f | 71 | { |
| harrisjunaid | 0:a67cda7c126f | 72 | fprintf(stderr, "Could not enumerate device: %d\n", rc); |
| harrisjunaid | 0:a67cda7c126f | 73 | return rc; |
| harrisjunaid | 0:a67cda7c126f | 74 | } |
| harrisjunaid | 0:a67cda7c126f | 75 | |
| harrisjunaid | 0:a67cda7c126f | 76 | |
| harrisjunaid | 0:a67cda7c126f | 77 | /* Initialize the mass storage and scsi interfaces */ |
| harrisjunaid | 0:a67cda7c126f | 78 | rc = MS_Init( &_blkSize, &_numBlks, inquiryResult ); |
| harrisjunaid | 0:a67cda7c126f | 79 | if (rc != OK) |
| harrisjunaid | 0:a67cda7c126f | 80 | { |
| harrisjunaid | 0:a67cda7c126f | 81 | fprintf(stderr, "Could not initialize mass storage interface: %d\n", rc); |
| harrisjunaid | 0:a67cda7c126f | 82 | return rc; |
| harrisjunaid | 0:a67cda7c126f | 83 | } |
| harrisjunaid | 0:a67cda7c126f | 84 | //printf("Successfully initialized mass storage interface; %d blocks of size %d\n", _numBlks, _blkSize); |
| harrisjunaid | 0:a67cda7c126f | 85 | print_inquiry(inquiryResult); |
| harrisjunaid | 0:a67cda7c126f | 86 | // FATFileSystem supports only 512-byte blocks |
| harrisjunaid | 0:a67cda7c126f | 87 | return _blkSize == 512 ? OK : 1; |
| harrisjunaid | 0:a67cda7c126f | 88 | } |
| harrisjunaid | 0:a67cda7c126f | 89 | |
| harrisjunaid | 0:a67cda7c126f | 90 | int MSCFileSystem::disk_initialize() |
| harrisjunaid | 0:a67cda7c126f | 91 | { |
| harrisjunaid | 0:a67cda7c126f | 92 | if ( initialise_msc() != OK ) |
| harrisjunaid | 0:a67cda7c126f | 93 | return 1; |
| harrisjunaid | 0:a67cda7c126f | 94 | |
| harrisjunaid | 0:a67cda7c126f | 95 | return 0; |
| harrisjunaid | 0:a67cda7c126f | 96 | } |
| harrisjunaid | 0:a67cda7c126f | 97 | |
| harrisjunaid | 0:a67cda7c126f | 98 | int MSCFileSystem::disk_write(const char *buffer, int block_number) |
| harrisjunaid | 0:a67cda7c126f | 99 | { |
| harrisjunaid | 0:a67cda7c126f | 100 | if ( OK == MS_BulkSend(block_number, 1, (USB_INT08U *)buffer) ) |
| harrisjunaid | 0:a67cda7c126f | 101 | return 0; |
| harrisjunaid | 0:a67cda7c126f | 102 | return 1; |
| harrisjunaid | 0:a67cda7c126f | 103 | } |
| harrisjunaid | 0:a67cda7c126f | 104 | |
| harrisjunaid | 0:a67cda7c126f | 105 | int MSCFileSystem::disk_read(char *buffer, int block_number) |
| harrisjunaid | 0:a67cda7c126f | 106 | { |
| harrisjunaid | 0:a67cda7c126f | 107 | if ( OK == MS_BulkRecv(block_number, 1, (USB_INT08U *)buffer) ) |
| harrisjunaid | 0:a67cda7c126f | 108 | return 0; |
| harrisjunaid | 0:a67cda7c126f | 109 | return 1; |
| harrisjunaid | 0:a67cda7c126f | 110 | } |
| harrisjunaid | 0:a67cda7c126f | 111 | |
| harrisjunaid | 0:a67cda7c126f | 112 | int MSCFileSystem::disk_status() { return 0; } |
| harrisjunaid | 0:a67cda7c126f | 113 | int MSCFileSystem::disk_sync() { return 0; } |
| harrisjunaid | 0:a67cda7c126f | 114 | int MSCFileSystem::disk_sectors() { return _numBlks; } |