xeye_ atsu / Mbed 2 deprecated I2S_AIC23B_RiceGolomb

パラメータを適応変化させる事により圧縮率を向上させた動的ライス・ゴロム符号を利用した可逆圧縮方式。圧縮ソフト、圧縮率のMATLABシミュレーションは詳細はInterface誌2011年8月号に掲載されるRX62Nマイコン連動特集にて掲載予定。

Dependencies:   mbed

MSCFileSystem.cpp@0:d920d64db582, 2011-03-30 (annotated)

Committer:
lynxeyed_atsu
Date:
Wed Mar 30 06:05:24 2011 +0000
Revision:
0:d920d64db582
alpha

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lynxeyed_atsu 0:d920d64db582 1 /* USB Mass Storage device file system
lynxeyed_atsu 0:d920d64db582 2 * Copyrigh (c) 2010, Igor Skochinsky
lynxeyed_atsu 0:d920d64db582 3 * based on SDFileStorage
lynxeyed_atsu 0:d920d64db582 4 * Copyright (c) 2008-2009, sford
lynxeyed_atsu 0:d920d64db582 5 */
lynxeyed_atsu 0:d920d64db582 6
lynxeyed_atsu 0:d920d64db582 7 /* Introduction
lynxeyed_atsu 0:d920d64db582 8 * ------------
lynxeyed_atsu 0:d920d64db582 9 * TODO: write one
lynxeyed_atsu 0:d920d64db582 10 * we're basically using NXP's USBHotLite sample code, just plugging in our own FAT library
lynxeyed_atsu 0:d920d64db582 11 */
lynxeyed_atsu 0:d920d64db582 12
lynxeyed_atsu 0:d920d64db582 13 #include "MSCFileSystem.h"
lynxeyed_atsu 0:d920d64db582 14 #include "usbhost_inc.h"
lynxeyed_atsu 0:d920d64db582 15
lynxeyed_atsu 0:d920d64db582 16 MSCFileSystem::MSCFileSystem(const char* name) :
lynxeyed_atsu 0:d920d64db582 17 FATFileSystem(name)
lynxeyed_atsu 0:d920d64db582 18 {
lynxeyed_atsu 0:d920d64db582 19 }
lynxeyed_atsu 0:d920d64db582 20
lynxeyed_atsu 0:d920d64db582 21 void print_inquiry(USB_INT08U *inqReply)
lynxeyed_atsu 0:d920d64db582 22 {
lynxeyed_atsu 0:d920d64db582 23 // see USB Mass Storage Class – UFI Command Specification,
lynxeyed_atsu 0:d920d64db582 24 // 4.2 INQUIRY Command
lynxeyed_atsu 0:d920d64db582 25 printf("Inquiry reply:\n");
lynxeyed_atsu 0:d920d64db582 26 uint8_t tmp = inqReply[0]&0x1F;
lynxeyed_atsu 0:d920d64db582 27 printf("Peripheral device type: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 28 if ( tmp == 0 )
lynxeyed_atsu 0:d920d64db582 29 printf("\t- Direct access (floppy)\n");
lynxeyed_atsu 0:d920d64db582 30 else if ( tmp == 0x1F )
lynxeyed_atsu 0:d920d64db582 31 printf("\t- none (no FDD connected)\n");
lynxeyed_atsu 0:d920d64db582 32 else
lynxeyed_atsu 0:d920d64db582 33 printf("\t- unknown type\n");
lynxeyed_atsu 0:d920d64db582 34 tmp = inqReply[1] >> 7;
lynxeyed_atsu 0:d920d64db582 35 printf("Removable Media Bit: %d\n", tmp);
lynxeyed_atsu 0:d920d64db582 36 tmp = inqReply[2] & 3;
lynxeyed_atsu 0:d920d64db582 37 printf("ANSI Version: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 38 if ( tmp != 0 )
lynxeyed_atsu 0:d920d64db582 39 printf("\t- warning! must be 0\n");
lynxeyed_atsu 0:d920d64db582 40 tmp = (inqReply[2]>>3) & 3;
lynxeyed_atsu 0:d920d64db582 41 printf("ECMA Version: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 42 if ( tmp != 0 )
lynxeyed_atsu 0:d920d64db582 43 printf("\t- warning! should be 0\n");
lynxeyed_atsu 0:d920d64db582 44 tmp = inqReply[2]>>6;
lynxeyed_atsu 0:d920d64db582 45 printf("ISO Version: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 46 if ( tmp != 0 )
lynxeyed_atsu 0:d920d64db582 47 printf("\t- warning! should be 0\n");
lynxeyed_atsu 0:d920d64db582 48 tmp = inqReply[3] & 0xF;
lynxeyed_atsu 0:d920d64db582 49 printf("Response Data Format: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 50 if ( tmp != 1 )
lynxeyed_atsu 0:d920d64db582 51 printf("\t- warning! should be 1\n");
lynxeyed_atsu 0:d920d64db582 52 tmp = inqReply[4];
lynxeyed_atsu 0:d920d64db582 53 printf("Additional length: %02Xh\n", tmp);
lynxeyed_atsu 0:d920d64db582 54 if ( tmp != 0x1F )
lynxeyed_atsu 0:d920d64db582 55 printf("\t- warning! should be 1Fh\n");
lynxeyed_atsu 0:d920d64db582 56 printf("Vendor Information: '%.8s'\n", &inqReply[8]);
lynxeyed_atsu 0:d920d64db582 57 printf("Product Identification: '%.16s'\n", &inqReply[16]);
lynxeyed_atsu 0:d920d64db582 58 printf("Product Revision: '%.4s'\n", &inqReply[32]);
lynxeyed_atsu 0:d920d64db582 59 }
lynxeyed_atsu 0:d920d64db582 60
lynxeyed_atsu 0:d920d64db582 61 int MSCFileSystem::initialise_msc()
lynxeyed_atsu 0:d920d64db582 62 {
lynxeyed_atsu 0:d920d64db582 63 USB_INT32S rc;
lynxeyed_atsu 0:d920d64db582 64 USB_INT08U inquiryResult[INQUIRY_LENGTH];
lynxeyed_atsu 0:d920d64db582 65
lynxeyed_atsu 0:d920d64db582 66 //print_clock();
lynxeyed_atsu 0:d920d64db582 67 Host_Init(); /* Initialize the host controller */
lynxeyed_atsu 0:d920d64db582 68 rc = Host_EnumDev(); /* Enumerate the device connected */
lynxeyed_atsu 0:d920d64db582 69 if (rc != OK)
lynxeyed_atsu 0:d920d64db582 70 {
lynxeyed_atsu 0:d920d64db582 71 fprintf(stderr, "Could not enumerate device: %d\n", rc);
lynxeyed_atsu 0:d920d64db582 72 return rc;
lynxeyed_atsu 0:d920d64db582 73 }
lynxeyed_atsu 0:d920d64db582 74
lynxeyed_atsu 0:d920d64db582 75
lynxeyed_atsu 0:d920d64db582 76 /* Initialize the mass storage and scsi interfaces */
lynxeyed_atsu 0:d920d64db582 77 rc = MS_Init( &_blkSize, &_numBlks, inquiryResult );
lynxeyed_atsu 0:d920d64db582 78 if (rc != OK)
lynxeyed_atsu 0:d920d64db582 79 {
lynxeyed_atsu 0:d920d64db582 80 fprintf(stderr, "Could not initialize mass storage interface: %d\n", rc);
lynxeyed_atsu 0:d920d64db582 81 return rc;
lynxeyed_atsu 0:d920d64db582 82 }
lynxeyed_atsu 0:d920d64db582 83 printf("Successfully initialized mass storage interface; %d blocks of size %d\n", _numBlks, _blkSize);
lynxeyed_atsu 0:d920d64db582 84 print_inquiry(inquiryResult);
lynxeyed_atsu 0:d920d64db582 85 // FATFileSystem supports only 512-byte blocks
lynxeyed_atsu 0:d920d64db582 86 return _blkSize == 512 ? OK : 1;
lynxeyed_atsu 0:d920d64db582 87 }
lynxeyed_atsu 0:d920d64db582 88
lynxeyed_atsu 0:d920d64db582 89 int MSCFileSystem::disk_initialize()
lynxeyed_atsu 0:d920d64db582 90 {
lynxeyed_atsu 0:d920d64db582 91 if ( initialise_msc() != OK )
lynxeyed_atsu 0:d920d64db582 92 return 1;
lynxeyed_atsu 0:d920d64db582 93
lynxeyed_atsu 0:d920d64db582 94 return 0;
lynxeyed_atsu 0:d920d64db582 95 }
lynxeyed_atsu 0:d920d64db582 96
lynxeyed_atsu 0:d920d64db582 97 int MSCFileSystem::disk_write(const char *buffer, int block_number)
lynxeyed_atsu 0:d920d64db582 98 {
lynxeyed_atsu 0:d920d64db582 99 if ( OK == MS_BulkSend(block_number, 1, (USB_INT08U *)buffer) )
lynxeyed_atsu 0:d920d64db582 100 return 0;
lynxeyed_atsu 0:d920d64db582 101 return 1;
lynxeyed_atsu 0:d920d64db582 102 }
lynxeyed_atsu 0:d920d64db582 103
lynxeyed_atsu 0:d920d64db582 104 int MSCFileSystem::disk_read(char *buffer, int block_number)
lynxeyed_atsu 0:d920d64db582 105 {
lynxeyed_atsu 0:d920d64db582 106 if ( OK == MS_BulkRecv(block_number, 1, (USB_INT08U *)buffer) )
lynxeyed_atsu 0:d920d64db582 107 return 0;
lynxeyed_atsu 0:d920d64db582 108 return 1;
lynxeyed_atsu 0:d920d64db582 109 }
lynxeyed_atsu 0:d920d64db582 110
lynxeyed_atsu 0:d920d64db582 111 int MSCFileSystem::disk_status() { return 0; }
lynxeyed_atsu 0:d920d64db582 112 int MSCFileSystem::disk_sync() { return 0; }
lynxeyed_atsu 0:d920d64db582 113 int MSCFileSystem::disk_sectors() { return _numBlks; }