keyboard.src

8*8键盘检测

; keyboard.SRC generated from: keyboard.c
; COMPILER INVOKED BY:
;        D:\Program Files\keilc\C51\BIN\C51.EXE keyboard.c BROWSE DEBUG OBJECTEXTEND

$NOMOD51

NAME	KEYBOARD

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
vclk	BIT	090H.0
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
qh	BIT	090H.1
PX1	BIT	0B8H.2
DPH	DATA	083H
sl	BIT	090H.2
DPL	DATA	082H
REN	BIT	098H.4
RXD	BIT	0B0H.0
TXD	BIT	0B0H.1
F0	BIT	0D0H.5
PSW	DATA	0D0H
?PR?_delay?KEYBOARD  SEGMENT CODE 
?PR?_out_164?KEYBOARD                    SEGMENT CODE 
?PR?in_165?KEYBOARD  SEGMENT CODE 
?PR?init?KEYBOARD    SEGMENT CODE 
?PR?main?KEYBOARD    SEGMENT CODE 
?BI?KEYBOARD         SEGMENT BIT 
	EXTRN	CODE (?C_STARTUP)
	PUBLIC	flag
	PUBLIC	main
	PUBLIC	init
	PUBLIC	in_165
	PUBLIC	_out_164
	PUBLIC	_delay

	RSEG  ?BI?KEYBOARD
           flag:   DBIT   1
; 
; #pragma src
; #include<reg51.h>
; 
; typedef	unsigned char uchar;
; 
; sbit vclk = P1^0;
; sbit qh = P1^1;
; sbit sl = P1^2;
; 
; bit flag;
; 
; void delay(uchar count)	

	RSEG  ?PR?_delay?KEYBOARD
_delay:
	USING	0
			; SOURCE LINE # 13
;---- Variable 'count?040' assigned to Register 'R7' ----
; {
			; SOURCE LINE # 14
; 	int i,j;
; 	for(j = count ; j ; j --)
			; SOURCE LINE # 16
	MOV  	R6,#00H
;---- Variable 'j?042' assigned to Register 'R6/R7' ----
?C0001:
	MOV  	A,R7
	ORL  	A,R6
	JZ   	?C0007
; 		for(i = 125 ; i; i --);
			; SOURCE LINE # 17
;---- Variable 'i?041' assigned to Register 'R4/R5' ----
	MOV  	R5,#07DH
	MOV  	R4,#00H
?C0004:
	MOV  	A,R5
	DEC  	R5
	JNZ  	?C0028
	DEC  	R4
?C0028:
	MOV  	A,R5
	ORL  	A,R4
	JNZ  	?C0004
?C0003:
	MOV  	A,R7
	DEC  	R7
	JNZ  	?C0001
	DEC  	R6
?C0029:
	SJMP 	?C0001
; }
			; SOURCE LINE # 18
?C0007:
	RET  	
; END OF _delay

; 
; void out_164(uchar set)

	RSEG  ?PR?_out_164?KEYBOARD
_out_164:
			; SOURCE LINE # 20
;---- Variable 'set?143' assigned to Register 'R7' ----
; {
			; SOURCE LINE # 21
; 	SBUF = set;
			; SOURCE LINE # 22
	MOV  	SBUF,R7
?C0008:
; 	while(!TI);
			; SOURCE LINE # 23
	JNB  	TI,?C0008
?C0009:
; 	TI = 0;
			; SOURCE LINE # 24
	CLR  	TI
; }
			; SOURCE LINE # 25
	RET  	
; END OF _out_164

; 
; uchar in_165()

	RSEG  ?PR?in_165?KEYBOARD
in_165:
	USING	0
			; SOURCE LINE # 27
;---- Variable 'result?245' assigned to Register 'R7' ----
; {	
			; SOURCE LINE # 28
; 	uchar i,result;
; 	sl = 0;
			; SOURCE LINE # 30
	CLR  	sl
; 	sl = 1;
			; SOURCE LINE # 31
	SETB 	sl
; 	for(i = 8; i; i --)
			; SOURCE LINE # 32
;---- Variable 'i?244' assigned to Register 'R6' ----
	MOV  	R6,#08H
?C0011:
; 	{
			; SOURCE LINE # 33
; 		result <<= 1;
			; SOURCE LINE # 34
	MOV  	A,R7
	ADD  	A,ACC
	MOV  	R7,A
; 		vclk = 0;
			; SOURCE LINE # 35
	CLR  	vclk
; 		if(qh == 1)
			; SOURCE LINE # 36
	JNB  	qh,?C0014
; 			result = result | 0x01;
			; SOURCE LINE # 37
	ORL  	AR7,#01H
	SJMP 	?C0015
?C0014:
; 		else
; 			result = result & 0xfe;
			; SOURCE LINE # 39
	ANL  	AR7,#0FEH
?C0015:
; 		vclk = 1;	
			; SOURCE LINE # 40
	SETB 	vclk
; 	}
			; SOURCE LINE # 41
	DJNZ 	R6,?C0011
?C0012:
; 	return result;
			; SOURCE LINE # 42
; }
			; SOURCE LINE # 43
?C0016:
	RET  	
; END OF in_165

; 
; void init()

	RSEG  ?PR?init?KEYBOARD
init:
	USING	0
			; SOURCE LINE # 45
; {	
			; SOURCE LINE # 46
; 	SCON = 0x00;
			; SOURCE LINE # 47
	CLR  	A
	MOV  	SCON,A
; 	TI = 0;
			; SOURCE LINE # 48
	CLR  	TI
; 	out_164(0x00);
			; SOURCE LINE # 49
	MOV  	R7,A
	LCALL	_out_164
; 	vclk = 0;
			; SOURCE LINE # 50
	CLR  	vclk
; }
			; SOURCE LINE # 51
	RET  	
; END OF init

; 
; 
; void main()

	RSEG  ?PR?main?KEYBOARD
main:
	USING	0
			; SOURCE LINE # 54
; {	
			; SOURCE LINE # 55
; 
; 	init();
			; SOURCE LINE # 57
	LCALL	init
; 	do
; 	{	
			; SOURCE LINE # 59
?C0021:
; 		while(in_165() == 0xff);
			; SOURCE LINE # 60
	LCALL	in_165
	MOV  	A,R7
	CPL  	A
	JZ   	?C0021
?C0022:
; 		delay(10);
			; SOURCE LINE # 61
	MOV  	R7,#0AH
	LCALL	_delay
; 		if(in_165() != 0xff)
			; SOURCE LINE # 62
	LCALL	in_165
	MOV  	A,R7
	CPL  	A
	JZ   	?C0023
; 			flag = 0;
			; SOURCE LINE # 63
	CLR  	flag
	SJMP 	?C0018
?C0023:
; 		else
; 			flag = 1;
			; SOURCE LINE # 65
	SETB 	flag
; 	}while(flag);
			; SOURCE LINE # 66
?C0018:
	JB   	flag,?C0021
; 
; 	out_164(0x07);
			; SOURCE LINE # 68
	MOV  	R7,#07H
	LCALL	_out_164
; 	if(in_165() == 0xf7)
			; SOURCE LINE # 69
	LCALL	in_165
	CJNE 	R7,#0F7H,?C0025
; 	{
			; SOURCE LINE # 70
; 		P2 = 0x02;
			; SOURCE LINE # 71
	MOV  	P2,#02H
; 	}
			; SOURCE LINE # 72
?C0025:
; 	if(in_165() == 0xfb)
			; SOURCE LINE # 73
	LCALL	in_165
	CJNE 	R7,#0FBH,?C0027
; 	{
			; SOURCE LINE # 74
; 		P2 = 0x11;
			; SOURCE LINE # 75
	MOV  	P2,#011H
; 	}
			; SOURCE LINE # 76
; 	//后边还可以检查其他按钮；；
; 	
; }
			; SOURCE LINE # 79
?C0027:
	RET  	
; END OF main

	END