ch375读U盘

特别说明此资料来自百度文库（/）您目前所看到的文档是使用的抱米花百度文库下载器所生成此文档原地址来自/view/92509af90242a8956bece47b.html 感谢您的支持抱米花/lotusbaob51+ch375UflqMfl()E?2005-10-16 19:50:007*S±*M$ 180ffC flSWflFAT 16tffSUfl cWflif i ,1ritunwffiTmn JS+*MW1W1NDOWStFAT 164t4-I flJU, YSJ*M*IM31 LAFflikilit5O% ±ftiU CH375AfrtjiiUfl‟MEW185%,O*1tTh WCH J tIEtft&*fl<i cflTUflIt:flfl64M/flfl128MfU16O-64MJt& 128M,fl/ifl16M/fl,I! f/64M,1&N/64M, MI32M/64MI128M, Z/C200-64M$?*4/256M,:1±7128M..., 503Wfl4ttM*fl128M,‟]Rt3!USB2.0-1 28M, ,4N1W CH flW)CH375A *14 i nclude <stdio.h>4 i nclude “CH375INC.H”#include <reg5l.h> /TtfflTMcs51Thfl*#define UNT8 unsigned that#define Ull‟TT 16 unsigned short#define UUTT32 unsigned long#define UII‟TT8X unsigned char xdata#define Ull‟JT8VX unsigned char volatile xdataUINT8VX CH375 CMD PORT atOxBDFl;1* CH375*tFE1flIJO*thtlE *7U1NT8VX CH375 DAT PORT at OxBCFO; I CR375 EL4fl II flJIJOtthhE *7#define CR375 INT WIRE INTO 1* P3.2, ICH375flNT#IPj1W*i‟ftJ+ *1UINT8X DISK BUFFER[5 12*32] at Ox0000; 1*9RAM11hiIE*1UINT32 DiskStart; 7*! tMLBA *1U1NT8 SecPerClus; 7*UII‟1T8RsvdSecCnt; 1*IcU1NT 16FATSz16; /* FAT 16i JFAT Jffi I%*77*!#USBfl*7 **********void niDelaymS( UINT8 delay) {U]ENT8i,j,c;for ( i = delay, i != 0; i --){ for(j=200;j != 0;j--)c+= 3;for(j=200;j!=0;j--)c+=3;void CH375 WRCMDPORT(UINT8 cmd) {1* CH375IJ44flA*4CH37SCMDPORT=cmd;for(cmd =2; cmd =0; cmd )7*W*4i-flt2uS */void CH375 WRDATPORT( UINT8 dat) {1* IiJ CR375 flJ3ttM* FT ACH375 DAT PORT=dat; 7* MCS51 tJLQWffi thflKtUINT8 CR375 RD DAT PORT( void) {/*bkCR375flthflflreturn(CH375DATPORT);7* MCS51 IL JZflHt*/ UINT8 mWaitlnterrupt( void) { 7*CR375#kwhile( CR375 TNT WIRE); 7**/CR375 WR CMD PORT(CMD GET STATUS); 7*11JW*1 return( CH375 RD DAT PORT(j);BullcOn1y4flitJ43L,41CR375T,t*1L*M*77***********RBC/SCSIfl,.flCR375 J I7***********/UINT8 nilnitDisk( void) {7* 4D4r1tfl*7UINT8 Status;CR375_WR_CMD_PORT( CMD_GET_STATUS); 7* JZtI$,*7 Status = CR3 75 RD DAT PORTO;if ( Status = USB INT DISCONNECT ) retum( Status); /* USB1J19T*7CR375 WRCMDPORT( CMD DISK INIT); 1* ft{IUSBM*7Status = mWaitlnterruptQ; 7*rj *7if ( Status != USB TNT SUCCESS) retum( Status); 7**1CR375 WRCMDPORT( CMD DISK SIZE); 7*USB‘fljfl*7Status = mWaitlnterruptQ; 7*fliJ*7if( Status != USB TNT SUCCESS) {1* tIä*77* tTCR375fl,*J‟Mt—CMDDISKRSENSE*4*7rnDelaymS( 250);CR375 WRCMDPORT( CMD DISK SIZE); 7*NZUSB#MJWt*7Status = mWaitlnterruptQ; 7*rfi *7if ( Status != USB TNT SUCCESS ) retum( Status); 7*t±iEQ4’i*7return( 0); 1* UDM1*1UINT8 mReadSector( UINT32 iLbaStart, UINT8 iSectorCount, UINT8X *oDataBuffer)U1NT 16mBlockCount;U1NT8 c;CH375WRCMDPORT( CMD DISK READ); 7*AUSBiflflCH375WRDATPORT( (UINT8)iLbaStart); 1* LBA{8ttcL*7CH375WRDATPORT( (UINT8)( iLbaStart >> 8));CH375WRDATPORT( (UINT8)( iLbaStart>> 16));CH375WRDATPORT((UINT8)( iLbaStart >> 24));/* LBAflJ18tL *7CH375WRDATPORT( iSectorCount); i8; mBlockCount != 0; mBlockCount --) {for (mBlockCount = iSectorCount*c = mWaitlnterruptQ; 1*if(c =USB TNT DISK READ) {7* flflj*7CH375WRCMDPORT( CMDRDUSBDATA); 1*),kCH375flktV**1c = CH375RDDATPORTQ;7*tES*1while (c --) *oDataBufferf_f = CH375RDDATPORT();CH375WRCMDPORT( CMD DISK RD 00);1*ffUSB4Jfl4‟1E*7 else break; /* J14W1kif ( mBlockCount = 0) {c=mWaitlnterrupt();1*if( c== USB TNT SUCCESS ) retum( 0); 1*1’MZJ*1return( c); 7* 4’J*77***********A*1? *7UINT16 mGetPointWord(UTNT8X *iAddr) { 1*MCS51ticM445Et*7 retum( iAddr[0] I(UINT16)iAddr[1] <<8);UINT8 mldenflisk( void) {7* *1UINT8 Status;DiskStart =0; /Status = niReadSector( 0, 1, DISK_BUFFER); /* I1ft/if( Status != 0) retum( Status);if( DISK BUFFER[O] != OxEB && DISK BUFFER[O] != OxE9) {1*DiskStart = DISK BUFFER[OxlC6] (UINT16)DISKBUFFER[OxlC7] <<8 (UINT32)DISKBUFFER[OxlC8] <<16 I(UTNT32)DISK BUFFER[OxlC9] <<24;Status = mReadSector( DiskStart, 1, DISK_BUFFER);if ( Status != 0 ) return( Status);SecPerClus = DISK BUFFER[OxOD]; 1**1RsvdSecCnt = DISK BUFFER[OxOE]; 1**1FATSz16 = mGetPointWord( &DISKBUFFER[0x161);1* FATIJU IZ*1 return( 0); /*MtbUINT16 mLinkCluster( U1NT16 iCluster) {1* *1!iA: iCluster J:Jtfl n*o *1UINT8 Status;Status = mReadSector( DiskStart + RsvdSecCnt + iCluster I 256, 1,DISK_BUFFER);if( Status != 0) return( 0); /**/return( mGetPointWord( &DISK BUFFER[ ( iCluster + iCluster) & OxO1FF]));UINT32 mClusterToLba( U1NT16 iCluster) {1*I#$t4LBAIJthEretum( DiskStart + RsvdSecCnt + FATSz16* 2 + 32 + (iCluster - 2)*SecPerClus);void mInitSTDIO( void) {1* flPCt,-bflt5ESCON = 0x50; PCON = 0x80; TMOD = 0x20; TH1 = Oxf3; TR1=1; TI=1; !24MHz, 9600bps */void mStoplfError( UINT8 iErrCode) {/*U* IU#I49tk*1if ( iErrCode = 0) return;printf( “Error status, %02X\n”,(UINT16)iErrCode);mainQ{UINT8 Status;UINT8XUINT16Cluster;mDelaymS( 200); /* flt200tLt*7mInitSTDIOQ;CH375_WR_CMD_PORT( CMD_SET_USB_MODE); /*CH375,tWUSBI1‟Pttt*7 CH375WRDATPORT( 6); 7*WJt4t4j, USBfl3while (1) {printf( “Insert USB disk\n”);while (mWaitlnterrupt() != USB_INT_CONNECT); 7*ImDelaymS( 250); /*UAIIfjStatus = mlnitDisk(); /*ftUiJUffifhHmStoplfError( Status);Status = midenDiskO; 7*R’J3*7mStoplfError( Status);2, 32,Status = mReadSector( DiskStart + RsvdSecCnt + FATSz16*DISK_BUFFER);mStoplfError( Status); /* i*FAT 16fl flJ*II,3fl‟*r!ij1J 32t, I/for ( CurrentDir = DISK_BUFFER; CurrentDir[0] != 0; CurrentDir += 32) { if( (CurrentDir[OxOBl & 0x08 ) == 0 && CurrentDir[0] !OxE5){ CurrentDir[OxOBj =0; 7*T±,t1tfl<43 AM*tprintf( “Name:%s\n”,CurrentDir); 7*1L1f* fl1LBW}7*±St flfl,ttff,flflCtfffl*7 if( (DISK BUFFER[OxOB]&0x08)==0 && DISK BUFFER[0]!=OxE5 && DISK BUFFER[8] ==…C‟){Cluster = mGetPointWord( &DISK BUFFER[Ox1A]); /*ff *7while (Cluster <OxFFF8) {7*if( Cluster == 0) mStoplfError( Ox8F); /*/Status = mReadSector( mClusterToLba( Cluster ), SecPerClus,DISK_BUFFER);mStoplfError( Status); 7*J1?‟jI:*7DISK_BUFFER[30] =0; printf( …Data:%s\n”,DISK BUFFER); /*Cluster = mLinkCluster( Cluster); 7**7}while (mWaitlnterrupt() != USB_INT_DISCONNECT); 7*1U1LB*7mDelaymS( 250);。