udisk.s

AVR单片机平台Atmega32+CH375A芯片读写U盘代码

;         else
;         {
;             CopyBytes(nComBuff.AckData.VeryData.ReadDataVer.DataBuff,FILE_DATA_BUF,512);
;             nComBuff.AckData.VeryData.ReadDataVer.ReadBytes = mCmdParam.ReadX.mSectorCount;
;             RETURN_SUCCESS;
;             nComBuff.ReqData.FrameLen = (nComBuff.AckData.VeryData.ReadDataVer.ReadBytes<<9) + 5;
;         }
;     }
;     else
;     {
;         ReturnErrorCode(A_BYTEMODE);
;     }
; }
; 
; /************************************************************************/
; /* 模块的扇区写入函数
; 在                                                                     */
; /************************************************************************/
; void ModuleSectorWrite(void)
; {
;     if(CH375DiskStatus == DISK_OPEN_FILE)
;     {
;         mCmdParam.Write.mSectorCount = nComBuff.ReqData.VeryData.WriteDataVer.Bytes;   /*把要写入的扇区数确定*/
;         CopyBytes(FILE_DATA_BUF,nComBuff.ReqData.VeryData.WriteDataVer.DataBuff,512);
;         LIGHT_WR;
;         OperReturn = CH375FileWrite( );
;         OFF_WR;
;         if(OperReturn)
;         {
;             ReturnErrorCode(OperReturn);
;         }
;         else
;         {
;             nComBuff.AckData.VeryData.RealWriteByte = mCmdParam.Write.mSectorCount;
;             RETURN_SUCCESS;
;             nComBuff.AckData.FrameLen = 5;
;         }
;     }
;     else
;     {
;         ReturnErrorCode(A_BYTEMODE);
;     }
; 
;         
; }
; /************************************************************************/
; /* 模块编辑文件属性函数
; 修改文件的属性，日期，长度，时间，
;                                                                    */
; /************************************************************************/
; 
; /************************************************************************/
; /* 模块文件的偏移
; 入口：ModeLocate ,0--字节模式，!0--扇区模式
;                                                                         */
; /************************************************************************/
; void ModuleSetOffset(uchar ModeLocate)
; {
;     if(ModeLocate == LOCATE_SECTOR_MODE)
;     {
;         mCmdParam.Locate.mSectorOffset = nComBuff.ReqData.VeryData.SetOffset;
;         OperReturn = CH375FileLocate();
;         if(OperReturn)
;             ReturnErrorCode(OperReturn);
;         else
;         {
;             RETURN_SUCCESS;
;             nComBuff.AckData.VeryData.RealOffset = mCmdParam.Locate.mSectorOffset;
;             nComBuff.AckData.FrameLen = 7;
;         }
;     }
;     else
;     {
;         mCmdParam.ByteLocate.mByteOffset = nComBuff.ReqData.VeryData.SetOffset;
;         OperReturn = CH375ByteLocate( );
;         if(OperReturn)
;             ReturnErrorCode(OperReturn);
;         else
;         {
;             RETURN_SUCCESS;
;             nComBuff.AckData.VeryData.RealOffset = mCmdParam.ByteLocate.mByteOffset;
;             nComBuff.AckData.FrameLen = 7;
;         }
;     }
; }
; /************************************************************************/
; /* 如果是有文件打开的状态,帧处理函数                                    */
; /************************************************************************/
; void StatusOpen(void)
; {
; 	uint rdcount;
; 	switch(nComBuff.ReqData.Com)
	.dbline 674
; 	{
	ldi R24,<_FILE_DATA_BUF
	ldi R25,>_FILE_DATA_BUF
	sts _mCmdParam+8+1,R25
	sts _mCmdParam+8,R24
	.dbline 675
; 		case R_RD_FILE_DATA:
	xcall _CH375FileReadX
	.dbline -2
L33:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e CH375FileWrite _CH375FileWrite fc
	.even
_CH375FileWrite::
	.dbline -1
	.dbline 679
; 			ModuleByteRead();
; 			break;
; 		case R_RD_FILE_ATTR:
; 			ModuleAttrRead();
	.dbline 680
; 			break;
	ldi R24,<_FILE_DATA_BUF
	ldi R25,>_FILE_DATA_BUF
	sts _mCmdParam+8+1,R25
	sts _mCmdParam+8,R24
	.dbline 681
; 		case R_WR_FILE_DATA:
	xcall _CH375FileWriteX
	.dbline -2
L35:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e CH375FileQuery _CH375FileQuery fc
;          count -> R20
;            buf -> R22,R23
	.even
_CH375FileQuery::
	xcall push_gset2
	.dbline -1
	.dbline 700
; 			ModuleByteWrite();
; 			break;
;         case R_RD_FILE_SECTOR:
;             ModuleSectorRead();
;             break;
;         case R_WR_FILE_SECTOR:
;             ModuleSectorWrite();
;             break;
; 		case R_CLOSEFILE:
; 			mCmdParam.Close.mUpdateLen = 1;                    //自动更新文件长度
; 			OperReturn = CH375FileClose( );
; 			if(OperReturn)
; 			{
; 				ReturnErrorCode(OperReturn);
; 			}
; 			else
; 			{
; 				ReturnErrorCode(A_SUCCESS);
; 			}
	.dbline 703
; 			B_status = S_READY;
; 			break;
; 		case R_SET_OFFSETBYTE:
	ldi R22,<_mCmdParam
	ldi R23,>_mCmdParam
	.dbline 704
	ldi R20,9
	xjmp L41
L38:
	.dbline 704
	.dbline 705
	ldi R24,255
	movw R30,R22
	std z+0,R24
	.dbline 706
	subi R22,255  ; offset = 1
	sbci R23,255
	.dbline 707
L39:
	.dbline 704
	dec R20
L41:
	.dbline 704
;             ModuleSetOffset(LOCATE_BYTE_MODE);
	tst R20
	brne L38
	.dbline 708
; 			break;
;         case R_SET_OFFSETSECTOR:
;             ModuleSetOffset(LOCATE_SECTOR_MODE);
;             break;
	xcall _CH375FileModify
	.dbline -2
L37:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r count 20 c
	.dbsym r buf 22 pc
	.dbend
	.dbfunc e xQueryInterrupt _xQueryInterrupt fV
	.even
_xQueryInterrupt::
	.dbline -1
	.dbline 715
; 
; 		case R_MODIFY_ATTR:
; 			mCmdParam.Modify.mFileAttr = nComBuff.ReqData.VeryData.ModifyFileAttrVer.FileAttr;
; 			mCmdParam.Modify.mFileDate = nComBuff.ReqData.VeryData.ModifyFileAttrVer.FileDate;
; 			mCmdParam.Modify.mFileSize = nComBuff.ReqData.VeryData.ModifyFileAttrVer.FileSize;
; 			mCmdParam.Modify.mFileTime = nComBuff.ReqData.VeryData.ModifyFileAttrVer.FileTime;
; 			OperReturn = CH375FileModify();
L43:
	.dbline 716
L44:
	.dbline 716
; 			if(OperReturn)
	sbic 0x10,2
	rjmp L43
	.dbline 717
; 			{
	ldi R16,34
	xcall _xWriteCH375Cmd
	.dbline 718
; 				ReturnErrorCode(OperReturn);
	xcall _xReadCH375Data
	sts _CH375IntStatus,R16
	.dbline 719
; 			}
	lds R24,_CH375IntStatus
	cpi R24,22
	brne L46
	.dbline 719
	ldi R24,1
	sts _CH375DiskStatus,R24
	xjmp L47
L46:
	.dbline 720
; 			else
	lds R24,_CH375IntStatus
	cpi R24,21
	brne L48
	.dbline 720
	ldi R24,2
	sts _CH375DiskStatus,R24
L48:
L47:
	.dbline -2
L42:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e xFileNameEnumer _xFileNameEnumer fV
	.even
_xFileNameEnumer::
	.dbline -1
	.dbline 764
; 			{
; 				RETURN_SUCCESS;
; 				nComBuff.AckData.VeryData.ModifyFileAttrVer.FileAttr = mCmdParam.Modify.mFileAttr;
; 				nComBuff.AckData.VeryData.ModifyFileAttrVer.FileDate = mCmdParam.Modify.mFileDate;
; 				nComBuff.AckData.VeryData.ModifyFileAttrVer.FileSize = mCmdParam.Modify.mFileSize;
; 				nComBuff.AckData.VeryData.ModifyFileAttrVer.FileTime = mCmdParam.Modify.mFileTime;
; 				nComBuff.AckData.FrameLen = FILE_ATTRI_BYTES+3;
; 			}
; 			B_status = S_OPEN;
; 			break;
; 		default:
; 			ReturnErrorCode(A_OPEN);
; 			break;
; 	}
; 
; }
; 
; /************************************************************************
; /接收到数据帧时的处理函数
; *************************************************************************/	    
; void RecieveFrameProcess( void )
; {
; 	if(nComBuff.AckData.Ack == R_RESET)
;         return;
;     switch( B_status)
; 	{
; 		case S_NOTREADY:            // 如果是未准备好状态
; 			nComBuff.AckData.Ack = A_NOTREADY;
; 			I2C_SEND_READY;               //发送已经准备好
; 			nComBuff.AckData.FrameLen = 3;
;             break;
; 		case S_READY:              //如果是准备好但未读写状态
; 			StatusReady();
; 			break;
; 
; 		case S_OPEN:                                  //有文件打开的情况下
; 			StatusOpen();
; 			break;
; 
; 		default:
; 			break;
; 	
; 	}
; 
	.dbline -2
L50:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e xWriteToExtBuf _xWriteToExtBuf fV
;        mLength -> R16
	.even
_xWriteToExtBuf::
	.dbline -1
	.dbline 827
; }
; 
; /******************************************************************************
; /全局变量的初始化
; ******************************************************************************/
; void variable(void)
; {
;     B_status=S_NOTREADY;
;     SlaveSendLength = &nComBuff.ReqData.FrameLen;
;     I2cReceiveData = (uchar*) &nComBuff;
;     I2cSendData = (uchar*) &nComBuff;
;     UartRx = temp;
;     nComBuff.AckData.Ack = A_NOTREADY;
;     nComBuff.AckData.FrameLen = 3;
; }
; //ICC-AVR application builder : 2007-7-15 10:41:34
; // Target : M32
; // Crystal: 8.0000Mhz
; 
; void port_init(void)
; {
;  PORTA = 0x00;
;  DDRA  = 0x00;
;  PORTB = 0xFF;
;  DDRB  = 0x03;
;  PORTC = 0xFF; 
;  DDRC  = 0xC0;
;  PORTD = 0xFF;
;  DDRD  = 0xF1;
; }
; 
; //Watchdog initialize
; // prescale: 512K
; void watchdog_init(void)
; {
;  WDR(); //this prevents a timout on enabling
;  WDTCR = 0x0D; //WATCHDOG ENABLED - dont forget to issue WDRs
; }
; 
; //TIMER0 initialize - prescale:1024
; // desired value: 20mSec
; // actual value: 19.952mSec (0.2%)
; void timer0_init(void)
; {
;  TCCR0 = 0x00; //stop
;  TCNT0 = 0x64; //set count
;  OCR0  = 0xEA;  //set compare
;  TCCR0 = 0x05; //start timer
; }
; 
; #pragma interrupt_handler timer0_ovf_isr:12
; void timer0_ovf_isr(void)
; {
;  TCNT0 = 0x64; //reload counter value
;  WDR();
;  if(ys20ms)
;     ys20ms--;
; 
; }
; 
; //call this routine to initialize all peripherals
; void init_devices(void)
; {
	.dbline 828
;  //stop errant interrupts until set up
	dec R16
	.dbline -2
L51:
	.dbline 0 ; func end
	ret
	.dbsym r mLength 16 c
	.dbend
	.dbfunc e xReadFromExtBuf _xReadFromExtBuf fV
;        mLength -> R16
	.even
_xReadFromExtBuf::
	.dbline -1
	.dbline 832
;  CLI(); //disable all interrupts
;  port_init();
;  watchdog_init();
;  timer0_init();
	.dbline 833
; 
	dec R16
	.dbline -2
L52:
	.dbline 0 ; func end
	ret
	.dbsym r mLength 16 c
	.dbend
	.dbfunc e CH375LibInit _CH375LibInit fc
	.even
_CH375LibInit::
	.dbline -1
	.dbline 841
;  MCUCR = 0x00;
;  GICR  = 0x00;
;  TIMSK = 0x01; //timer interrupt sources
;  SEI(); //re-enable interrupts
;  //all peripherals are now initialized
; }
; 	   
; 
	.dbline 842
; 	   
	ldi R24,5
	sts _CH375LibConfig,R24
	.dbline 843
; 
	clr R2
	sts _DISK_BASE_BUF,R2
	.dbline 844
; 	   
	xcall _CH375GetVer
	cpi R16,48
	brsh L54
	.dbline 844
	ldi R16,255
	xjmp L53
L54:
	.dbline 845
; 
	xcall _CH375Init
	.dbline -2
L53:
	.dbline 0 ; func end
	ret
	.dbend
	.dbfile E:\xm\jxf\u盘读写模块\code\udisk_test0827\udisk.c
	.dbfunc e main _main fV
;              j -> R20,R21
;              i -> R20
	.even
_main::
	.dbline -1
	.dbline 152
	.dbline 154
	ldi R20,200
	ldi R21,0
L57:
	.dbline 155
	xcall _variable
	.dbline 156
	ldi R16,100
	ldi R17,0
	xcall _i2cSetBitrate
	.dbline 157
	xcall _i2cInit
	.dbline 158
	ldi R18,1
	ldi R16,96
	xcall _i2cSetLocalDeviceAddr
	.dbline 159
	clr R16
	xcall _init_USART
	.dbline 160
	xcall _init_devices
	.dbline 162
	xcall _xDelay100uS
	.dbline 163
	xcall _delay_us
	.dbline 164
	ldi R16,<L58
	ldi R17,>L58
	xcall _put_s
	.dbline 165
	clr R20
	xjmp L62
L59:
	.dbline 166
	.dbline 167
	in R24,0x12
	andi R24,15
	out 0x12,R24
	.dbline 168
	ldi R24,20
	sts _ys20ms,R24
L63:
	.dbline 169
L64:
	.dbline 169
	lds R2,_ys20ms
	tst R2
	brne L63
	.dbline 170
	in R24,0x12
	ori R24,240
	out 0x12,R24
	.dbline 171
	ldi R24,20
	sts _ys20ms,R24
L66:
	.dbline 172
L67:
	.dbline 172
	lds R2,_ys20ms
	tst R2
	brne L66
	.dbline 174
L60:
	.dbline 165
	inc R20
L62:
	.dbline 165
	cpi R20,3
	brlo L59
	.dbline 176
	xcall _CH375LibInit
	sts _OperReturn,R16
	.dbline 177
	tst R16
	breq L72
	.dbline 178
	.dbline 179
	xjmp L57
L71:
	.dbline 182
	xcall _xQueryInterrupt
L72:
	.dbline 182
	lds R24,_CH375DiskStatus
	cpi R24,2
	brne L71
	.dbline 184
	ldi R16,200
	xcall _mDelaymS
	.dbline 187
	clr R20
	xjmp L77
L74:
	.dbline 188
	.dbline 189
	ldi R16,100
	xcall _mDelaymS
	.dbline 190
	xcall _CH375DiskReady
	tst R16
	brne L78
	.dbline 191
	.dbline 192
	ldi R24,2
	sts _B_status,R24
	.dbline 193
	xjmp L76
L78:
	.dbline 196
	.dbline 197
	ldi R24,1
	sts _B_status,R24
	.dbline 198
	.dbline 199
L75:
	.dbline 187
	inc R20
L77:
	.dbline 187
	cpi R20,10
	brlo L74
L76:
	.dbline 200
	ldi R16,<L80
	ldi R17,>L80
	xcall _put_s
	xjmp L82
L81:
	.dbline 203
	.dbline 205
	lds R2,_I2cComStatus
	sbrs R2,7
	rjmp L84
	.dbline 206
	.dbline 207
	in R24,0x36
	andi R24,191
	out 0x36,R24
	.dbline 208
	cbi 0x12,5
	.dbline 209
	ldi R16,<L86