comm_51.src

《uC/os-II 内核分析.移植与驱动程序开发》随书光盘中的全部源代码

; .\DeBug\COMM_51.SRC generated from: COMM_51.C
; COMPILER INVOKED BY:
;        C:\Keil\C51\BIN\C51.EXE COMM_51.C LARGE BROWSE DEBUG OBJECTEXTEND PRINT(.\DeBug\COMM_51.lst) SRC(.\DeBug\COMM_51.SRC)

$NOMOD51

NAME	COMM_51

P0	DATA	080H
P1	DATA	090H
P2	DATA	0A0H
P3	DATA	0B0H
T0	BIT	0B0H.4
AC	BIT	0D0H.6
T1	BIT	0B0H.5
EA	BIT	0A8H.7
IE	DATA	0A8H
RD	BIT	0B0H.7
ES	BIT	0A8H.4
IP	DATA	0B8H
RI	BIT	098H.0
INT0	BIT	0B0H.2
CY	BIT	0D0H.7
TI	BIT	098H.1
INT1	BIT	0B0H.3
PS	BIT	0B8H.4
SP	DATA	081H
OV	BIT	0D0H.2
WR	BIT	0B0H.6
SBUF	DATA	099H
PCON	DATA	087H
SCON	DATA	098H
TMOD	DATA	089H
TCON	DATA	088H
IE0	BIT	088H.1
IE1	BIT	088H.3
B	DATA	0F0H
ACC	DATA	0E0H
ET0	BIT	0A8H.1
ET1	BIT	0A8H.3
TF0	BIT	088H.5
TF1	BIT	088H.7
RB8	BIT	098H.2
TH0	DATA	08CH
EX0	BIT	0A8H.0
IT0	BIT	088H.0
TH1	DATA	08DH
TB8	BIT	098H.3
EX1	BIT	0A8H.2
IT1	BIT	088H.2
P	BIT	0D0H.0
SM0	BIT	098H.7
TL0	DATA	08AH
SM1	BIT	098H.6
TL1	DATA	08BH
SM2	BIT	098H.5
PT0	BIT	0B8H.1
PT1	BIT	0B8H.3
RS0	BIT	0D0H.3
TR0	BIT	088H.4
RS1	BIT	0D0H.4
TR1	BIT	088H.6
PX0	BIT	0B8H.0
PX1	BIT	0B8H.2
DPH	DATA	083H
DPL	DATA	082H
REN	BIT	098H.4
RXD	BIT	0B0H.0
TXD	BIT	0B0H.1
F0	BIT	0D0H.5
PSW	DATA	0D0H
?PR?_?CommInit?COMM_51                   SEGMENT CODE 
?PR?_?CommISRHandler?COMM_51             SEGMENT CODE 
	EXTRN	XDATA (FirstCharFlag)
	EXTRN	CODE (_?CommGetTxChar)
	EXTRN	CODE (_?CommPutRxChar)
	EXTRN	CODE (?C?ADDXBP)
	EXTRN	DATA (?C_XBP)
	PUBLIC	_?CommISRHandler
	PUBLIC	_?CommInit
; /*
; *********************************************************************************************************
; *                               基于uC/OS-II的串口驱动及应用程序接口函数
; *                                             版权所有
; *
; * 文件名 : COMM_51.C
; * 作者   : 陈是知 [e-mail] 北京中软 2005。3。11
; *********************************************************************************************************
; */
; 
; #include "includes.h"
; 
; 
; void CommInit() reentrant

	RSEG  ?PR?_?CommInit?COMM_51
_?CommInit:
			; SOURCE LINE # 14
; {
;         TMOD=TMOD&0x0F;
			; SOURCE LINE # 16
	ANL  	TMOD,#0FH
;         TMOD=TMOD|0x20;
			; SOURCE LINE # 17
	ORL  	TMOD,#020H
;         TL1=0x40,TH1=0x40;	//300, 22.1184MHz
			; SOURCE LINE # 18
	MOV  	TL1,#040H
	MOV  	TH1,#040H
;         SCON=0x50;PCON=0x00;
			; SOURCE LINE # 19
	MOV  	SCON,#050H
	CLR  	A
	MOV  	PCON,A
;         TR1=1;
			; SOURCE LINE # 20
	SETB 	TR1
; 		ES=1;
			; SOURCE LINE # 21
	SETB 	ES
; }
			; SOURCE LINE # 22
	RET  	
; END OF _?CommInit

; 
; 
; void  CommISRHandler () reentrant

	RSEG  ?PR?_?CommISRHandler?COMM_51
_?CommISRHandler:
	USING	0
			; SOURCE LINE # 25
	MOV  	DPTR,#0FFFEH
	LCALL	?C?ADDXBP
; {  
;     INT8U   c;
;     INT8U   err;
; 	extern INT8U FirstCharFlag;
; 	
;     if(RI){
			; SOURCE LINE # 31
	JNB  	RI,?C0002
;             RI=0;
			; SOURCE LINE # 32
	CLR  	RI
;             c=SBUF;
			; SOURCE LINE # 33
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	MOV  	A,SBUF
	MOVX 	@DPTR,A
;             CommPutRxChar(c);
			; SOURCE LINE # 34
	MOVX 	A,@DPTR
	MOV  	R7,A
	LCALL	_?CommPutRxChar
; 		  }
			; SOURCE LINE # 35
?C0002:
; 
;     if(TI){
			; SOURCE LINE # 37
	JNB  	TI,?C0009
; 			TI=0;
			; SOURCE LINE # 38
	CLR  	TI
; 			if(FirstCharFlag==0x01)
			; SOURCE LINE # 39
	MOV  	DPTR,#FirstCharFlag
	MOVX 	A,@DPTR
	XRL  	A,#01H
	JNZ  	?C0004
; 	         {
			; SOURCE LINE # 40
; 			  c = CommGetTxChar(&err);   
			; SOURCE LINE # 41
	MOV  	R3,#01H
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	INC  	DPTR
	MOV  	R1,DPL
	MOV  	R2,DPH
	LCALL	_?CommGetTxChar
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	MOV  	A,R7
	MOVX 	@DPTR,A
;     		  FirstCharFlag=0x00;
			; SOURCE LINE # 42
	CLR  	A
	MOV  	DPTR,#FirstCharFlag
	MOVX 	@DPTR,A
;               if(err==COMM_NO_ERR)
			; SOURCE LINE # 43
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	INC  	DPTR
	MOVX 	A,@DPTR
	JNZ  	?C0009
; 			  SBUF=c;
			; SOURCE LINE # 44
; 			 }
			; SOURCE LINE # 45
	SJMP 	?C0010
?C0004:
; 			else
; 			 {
			; SOURCE LINE # 47
; 			  c = CommGetTxChar(&err);
			; SOURCE LINE # 48
	MOV  	R3,#01H
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	INC  	DPTR
	MOV  	R1,DPL
	MOV  	R2,DPH
	LCALL	_?CommGetTxChar
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	MOV  	A,R7
	MOVX 	@DPTR,A
;  			  if(err==COMM_NO_ERR)
			; SOURCE LINE # 49
	INC  	DPTR
	MOVX 	A,@DPTR
	JNZ  	?C0007
; 			    SBUF=c;
			; SOURCE LINE # 50
?C0010:
	MOV  	DPH,?C_XBP
	MOV  	DPL,?C_XBP+01H
	MOVX 	A,@DPTR
	MOV  	SBUF,A
	SJMP 	?C0009
?C0007:
; 			  else
; 			    FirstCharFlag=0x01;
			; SOURCE LINE # 52
	MOV  	DPTR,#FirstCharFlag
	MOV  	A,#01H
	MOVX 	@DPTR,A
; 			 }
			; SOURCE LINE # 53
;           }
			; SOURCE LINE # 54
; 			  
; }
			; SOURCE LINE # 56
?C0009:
	MOV  	DPTR,#02H
	LJMP 	?C?ADDXBP
; END OF _?CommISRHandler

	END