bruno LARNAUDIE
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UsbTest
MSCFileSystem.cpp@0:4359b47b3d7c, 2011-08-26 (annotated)
- Committer:
- slowness
- Date:
- Fri Aug 26 12:19:16 2011 +0000
- Revision:
- 0:4359b47b3d7c
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
slowness | 0:4359b47b3d7c | 1 | /* USB Mass Storage device file system |
slowness | 0:4359b47b3d7c | 2 | * Copyrigh (c) 2010, Igor Skochinsky |
slowness | 0:4359b47b3d7c | 3 | * based on SDFileStorage |
slowness | 0:4359b47b3d7c | 4 | * Copyright (c) 2008-2009, sford |
slowness | 0:4359b47b3d7c | 5 | */ |
slowness | 0:4359b47b3d7c | 6 | |
slowness | 0:4359b47b3d7c | 7 | /* Introduction |
slowness | 0:4359b47b3d7c | 8 | * ------------ |
slowness | 0:4359b47b3d7c | 9 | * TODO: write one |
slowness | 0:4359b47b3d7c | 10 | * we're basically using NXP's USBHotLite sample code, just plugging in our own FAT library |
slowness | 0:4359b47b3d7c | 11 | */ |
slowness | 0:4359b47b3d7c | 12 | |
slowness | 0:4359b47b3d7c | 13 | #include "MSCFileSystem.h" |
slowness | 0:4359b47b3d7c | 14 | #include "usbhost_inc.h" |
slowness | 0:4359b47b3d7c | 15 | |
slowness | 0:4359b47b3d7c | 16 | MSCFileSystem::MSCFileSystem(const char* name) : |
slowness | 0:4359b47b3d7c | 17 | FATFileSystem(name) |
slowness | 0:4359b47b3d7c | 18 | { |
slowness | 0:4359b47b3d7c | 19 | } |
slowness | 0:4359b47b3d7c | 20 | |
slowness | 0:4359b47b3d7c | 21 | void print_inquiry(USB_INT08U *inqReply) |
slowness | 0:4359b47b3d7c | 22 | { |
slowness | 0:4359b47b3d7c | 23 | // see USB Mass Storage Class � UFI Command Specification, |
slowness | 0:4359b47b3d7c | 24 | // 4.2 INQUIRY Command |
slowness | 0:4359b47b3d7c | 25 | printf("Inquiry reply:\n"); |
slowness | 0:4359b47b3d7c | 26 | uint8_t tmp = inqReply[0]&0x1F; |
slowness | 0:4359b47b3d7c | 27 | printf("Peripheral device type: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 28 | if ( tmp == 0 ) |
slowness | 0:4359b47b3d7c | 29 | printf("\t- Direct access (floppy)\n"); |
slowness | 0:4359b47b3d7c | 30 | else if ( tmp == 0x1F ) |
slowness | 0:4359b47b3d7c | 31 | printf("\t- none (no FDD connected)\n"); |
slowness | 0:4359b47b3d7c | 32 | else |
slowness | 0:4359b47b3d7c | 33 | printf("\t- unknown type\n"); |
slowness | 0:4359b47b3d7c | 34 | tmp = inqReply[1] >> 7; |
slowness | 0:4359b47b3d7c | 35 | printf("Removable Media Bit: %d\n", tmp); |
slowness | 0:4359b47b3d7c | 36 | tmp = inqReply[2] & 3; |
slowness | 0:4359b47b3d7c | 37 | printf("ANSI Version: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 38 | if ( tmp != 0 ) |
slowness | 0:4359b47b3d7c | 39 | printf("\t- warning! must be 0\n"); |
slowness | 0:4359b47b3d7c | 40 | tmp = (inqReply[2]>>3) & 3; |
slowness | 0:4359b47b3d7c | 41 | printf("ECMA Version: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 42 | if ( tmp != 0 ) |
slowness | 0:4359b47b3d7c | 43 | printf("\t- warning! should be 0\n"); |
slowness | 0:4359b47b3d7c | 44 | tmp = inqReply[2]>>6; |
slowness | 0:4359b47b3d7c | 45 | printf("ISO Version: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 46 | if ( tmp != 0 ) |
slowness | 0:4359b47b3d7c | 47 | printf("\t- warning! should be 0\n"); |
slowness | 0:4359b47b3d7c | 48 | tmp = inqReply[3] & 0xF; |
slowness | 0:4359b47b3d7c | 49 | printf("Response Data Format: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 50 | if ( tmp != 1 ) |
slowness | 0:4359b47b3d7c | 51 | printf("\t- warning! should be 1\n"); |
slowness | 0:4359b47b3d7c | 52 | tmp = inqReply[4]; |
slowness | 0:4359b47b3d7c | 53 | printf("Additional length: %02Xh\n", tmp); |
slowness | 0:4359b47b3d7c | 54 | if ( tmp != 0x1F ) |
slowness | 0:4359b47b3d7c | 55 | printf("\t- warning! should be 1Fh\n"); |
slowness | 0:4359b47b3d7c | 56 | printf("Vendor Information: '%.8s'\n", &inqReply[8]); |
slowness | 0:4359b47b3d7c | 57 | printf("Product Identification: '%.16s'\n", &inqReply[16]); |
slowness | 0:4359b47b3d7c | 58 | printf("Product Revision: '%.4s'\n", &inqReply[32]); |
slowness | 0:4359b47b3d7c | 59 | } |
slowness | 0:4359b47b3d7c | 60 | |
slowness | 0:4359b47b3d7c | 61 | int MSCFileSystem::initialise_msc() |
slowness | 0:4359b47b3d7c | 62 | { |
slowness | 0:4359b47b3d7c | 63 | USB_INT32S rc; |
slowness | 0:4359b47b3d7c | 64 | USB_INT08U inquiryResult[INQUIRY_LENGTH]; |
slowness | 0:4359b47b3d7c | 65 | |
slowness | 0:4359b47b3d7c | 66 | //print_clock(); |
slowness | 0:4359b47b3d7c | 67 | Host_Init(); /* Initialize the host controller */ |
slowness | 0:4359b47b3d7c | 68 | rc = Host_EnumDev(); /* Enumerate the device connected */ |
slowness | 0:4359b47b3d7c | 69 | if (rc != OK) |
slowness | 0:4359b47b3d7c | 70 | { |
slowness | 0:4359b47b3d7c | 71 | fprintf(stderr, "Could not enumerate device: %d\n", rc); |
slowness | 0:4359b47b3d7c | 72 | return rc; |
slowness | 0:4359b47b3d7c | 73 | } |
slowness | 0:4359b47b3d7c | 74 | |
slowness | 0:4359b47b3d7c | 75 | |
slowness | 0:4359b47b3d7c | 76 | /* Initialize the mass storage and scsi interfaces */ |
slowness | 0:4359b47b3d7c | 77 | rc = MS_Init( &_blkSize, &_numBlks, inquiryResult ); |
slowness | 0:4359b47b3d7c | 78 | if (rc != OK) |
slowness | 0:4359b47b3d7c | 79 | { |
slowness | 0:4359b47b3d7c | 80 | fprintf(stderr, "Could not initialize mass storage interface: %d\n", rc); |
slowness | 0:4359b47b3d7c | 81 | return rc; |
slowness | 0:4359b47b3d7c | 82 | } |
slowness | 0:4359b47b3d7c | 83 | printf("Successfully initialized mass storage interface; %d blocks of size %d\n", _numBlks, _blkSize); |
slowness | 0:4359b47b3d7c | 84 | print_inquiry(inquiryResult); |
slowness | 0:4359b47b3d7c | 85 | // FATFileSystem supports only 512-byte blocks |
slowness | 0:4359b47b3d7c | 86 | return _blkSize == 512 ? OK : 1; |
slowness | 0:4359b47b3d7c | 87 | } |
slowness | 0:4359b47b3d7c | 88 | |
slowness | 0:4359b47b3d7c | 89 | int MSCFileSystem::disk_initialize() |
slowness | 0:4359b47b3d7c | 90 | { |
slowness | 0:4359b47b3d7c | 91 | if ( initialise_msc() != OK ) |
slowness | 0:4359b47b3d7c | 92 | return 1; |
slowness | 0:4359b47b3d7c | 93 | |
slowness | 0:4359b47b3d7c | 94 | return 0; |
slowness | 0:4359b47b3d7c | 95 | } |
slowness | 0:4359b47b3d7c | 96 | |
slowness | 0:4359b47b3d7c | 97 | int MSCFileSystem::disk_write(const char *buffer, int block_number) |
slowness | 0:4359b47b3d7c | 98 | { |
slowness | 0:4359b47b3d7c | 99 | if ( OK == MS_BulkSend(block_number, 1, (USB_INT08U *)buffer) ) |
slowness | 0:4359b47b3d7c | 100 | return 0; |
slowness | 0:4359b47b3d7c | 101 | return 1; |
slowness | 0:4359b47b3d7c | 102 | } |
slowness | 0:4359b47b3d7c | 103 | |
slowness | 0:4359b47b3d7c | 104 | int MSCFileSystem::disk_read(char *buffer, int block_number) |
slowness | 0:4359b47b3d7c | 105 | { |
slowness | 0:4359b47b3d7c | 106 | if ( OK == MS_BulkRecv(block_number, 1, (USB_INT08U *)buffer) ) |
slowness | 0:4359b47b3d7c | 107 | return 0; |
slowness | 0:4359b47b3d7c | 108 | return 1; |
slowness | 0:4359b47b3d7c | 109 | } |
slowness | 0:4359b47b3d7c | 110 | |
slowness | 0:4359b47b3d7c | 111 | int MSCFileSystem::disk_status() { return 0; } |
slowness | 0:4359b47b3d7c | 112 | int MSCFileSystem::disk_sync() { return 0; } |
slowness | 0:4359b47b3d7c | 113 | int MSCFileSystem::disk_sectors() { return _numBlks; } |