ch375.s

AVR单片机系统开发经典实例部分源程序

	.module ch375.c
	.area text(rom, con, rel)
	.dbfile C:\AVR\OK\ch375.c
	.dbfunc e m_nop _m_nop fV
;              m -> R20
	.even
_m_nop::
	xcall push_gset1
	mov R20,R16
	.dbline -1
	.dbline 9
; #include "ch375.h" 
; 
; unsigned char usb_rec_buff[64];
; unsigned char usb_rec_buflen;
; unsigned char diskbuff[512*2];
; 
; 
; void m_nop(unsigned char m)
; { 
	xjmp L3
L2:
	.dbline 11
	xcall __NOP
L3:
	.dbline 10
;   while(m--)
	mov R2,R20
	clr R3
	subi R20,1
	tst R2
	brne L2
	.dbline 12
;   _NOP();
;   _NOP();
	xcall __NOP
	.dbline -2
L1:
	xcall pop_gset1
	.dbline 0 ; func end
	ret
	.dbsym r m 20 c
	.dbend
	.dbfunc e set_usb_mode _set_usb_mode fc
;        RD_Data -> R20
;              i -> R22
;           mode -> R20
	.even
_set_usb_mode::
	xcall push_gset2
	mov R20,R16
	.dbline -1
	.dbline 16
; }
; /* 设置CH37X的工作模式 */
; unsigned char set_usb_mode( unsigned char mode )
; {
	.dbline 20
; 				   unsigned char i;
; 				   unsigned char RD_Data;
; 
; 				   usb_cmd=CMD_SET_USB_MODE;
	ldi R24,21
	sts 40961,R24
	.dbline 21
; 				   nop();
	xcall _nop
	.dbline 22
; 				   nop();
	xcall _nop
	.dbline 23
; 				   nop();
	xcall _nop
	.dbline 24
; 				   nop();
	xcall _nop
	.dbline 25
; 				   usb_data=mode;
	sts 40960,R20
	.dbline 26
;                    nop();
	xcall _nop
	.dbline 27
; 				   for( i=100; i!=0; i-- )   /* 等待设置模式操作完成,不超过30uS */
	ldi R22,100
	xjmp L9
L6:
	.dbline 28
; 				   		{
	.dbline 29
; 						RD_Data=usb_data;
	lds R20,40960
	.dbline 30
; 						if( RD_Data == CMD_RET_SUCCESS )
	cpi R20,81
	brne L10
	.dbline 31
; 						return 1;
	ldi R16,1
	xjmp L5
L10:
	.dbline 32
L7:
	.dbline 27
	dec R22
L9:
	.dbline 27
	tst R22
	brne L6
	.dbline 33
; 						}  /* 成功 */
; 						return 0;
	clr R16
	.dbline -2
L5:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r RD_Data 20 c
	.dbsym r i 22 c
	.dbsym r mode 20 c
	.dbend
	.dbfunc e ch375_init _ch375_init fc
;           mode -> R0
	.even
_ch375_init::
	.dbline 0 ; func end
	ret
	.dbsym l mode 0 c
	.dbend
	.dbfunc e get_ver _get_ver fc
	.even
_get_ver::
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e _usb_send __usb_send fV
;            len -> R1
;          pbuff -> R0,R1
	.even
__usb_send::
	.dbline 0 ; func end
	ret
	.dbsym l len 2 c
	.dbsym l pbuff 0 pc
	.dbend
	.dbfunc e usb_send_data _usb_send_data fV
;            len -> R1,R2
;          pbuff -> R0,R1
	.even
_usb_send_data::
	.dbline 0 ; func end
	ret
	.dbsym l len 2 i
	.dbsym l pbuff 0 pc
	.dbend
	.dbfunc e waitint _waitint fc
	.even
_waitint::
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e InitDisk _InitDisk fc
	.even
_InitDisk::
	.dbline 0 ; func end
	ret
	.dbend
	.dbfunc e ReadSector _ReadSector fc
;    oDataBuffer -> R1,R2
;   iSectorCount -> R0
;      iLbaStart -> y+2
	.even
_ReadSector::
	.dbline 0 ; func end
	ret
	.dbsym l oDataBuffer 6 pc
	.dbsym l iSectorCount 4 c
	.dbsym l iLbaStart 0 l
	.dbend
	.dbfunc e WriteSector _WriteSector fc
;    oDataBuffer -> R1,R2
;   iSectorCount -> R0
;      iLbaStart -> y+2
	.even
_WriteSector::
	.dbline 0 ; func end
	ret
	.dbsym l oDataBuffer 6 pc
	.dbsym l iSectorCount 4 c
	.dbsym l iLbaStart 0 l
	.dbend
	.dbfunc e WordSwap _WordSwap fi
;          input -> R0,R1
	.even
_WordSwap::
	.dbline 0 ; func end
	ret
	.dbsym l input 0 i
	.dbend
	.dbfunc e LSwapINT16 _LSwapINT16 fi
;         dData2 -> R1,R2
;         dData1 -> R0,R1
	.even
_LSwapINT16::
	.dbline 0 ; func end
	ret
	.dbsym l dData2 2 s
	.dbsym l dData1 0 s
	.dbend
	.dbfunc e LSwapINT32 _LSwapINT32 fl
;         dData4 -> y+14
;         dData3 -> y+10
;         dData2 -> y+6
;         dData1 -> y+2
	.even
_LSwapINT32::
	.dbline 0 ; func end
	ret
	.dbsym l dData4 12 l
	.dbsym l dData3 8 l
	.dbsym l dData2 4 l
	.dbsym l dData1 0 l
	.dbend