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[. .doc .31-37]
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ʲ-09-1 MCS-51
| , | 0.75 | 0.5 | 0.25 | 0.2 | 0.1 | ||||||||||||
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| , | 15,5 | 14,5 | 13,5 | 12,5 | 9,5 | 8,5 | 7,5 | 6,5 | 5,5 | 4.5 | 3.5 | 2.5 | 1.5 | ||||
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ʲ-09-2 MCS-51
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| , | 0.75 | ||||||||||||||||
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| , | 0.75 | 0.5 | 0.25 | 0.2 | 0.1 | ||||||||||||
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[. .doc .31-37]
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SEZAM, , .
. DELAY 50 /0. ONESEC 1.
1, . , 07, 0 . , () 7, 3 5, .
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( 50 ), . , 20 (CODE_EX). , . 500 . 1 2. ( R4) 0.2 , ( R5) 1 .
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121 ; , - . (, 51 , , , ..)
;
; 1
K BIT P1.2;
D BIT P1.3;
E BIT P1.5;
Q BIT P1.4;
S BIT P1.0;
L BIT P1.1;
CODE_EX DATA 20H;
; SEZAM
ORG 0;
REPEAT: JNB D, ALARM; , D=0
JB K, REPEAT; , K=0
JNB K, ;
;
MOV R6, #3; ( 1) ß 3
MOV R0, #CODE_EX;
CYKLE :CLR A;
CLR L;
MOV R5, #120; ( 2) ß 120
LOOP: ACALL DELAY; 0.05
JNB D, ALARM
JNB K, KZERO; , =0
DJNZ R5, LOOP;
SJMP PAUSE; , 6
KZERO: ACALL DELAY;
JNB D, ALARM;
JB K, ACCEPT; ,
DJNZ R5, KZERO;
SJMP PAUSE;
ACCEPT: INC A;
SJMP LOOP;
PAUSE: MOV @R0, A;
INC R0;
SETB L;
ACALL ONESEC ; 1
DJNZ R6, CYKLE;
;
MOV R0,#CODE_EX;
CJNE @R0,#7,REPEAT;
INC R0;
CJNE @ R0,#3,REPEAT;
INC R0;
CJNE @R0,#5,REPEAT;
;
CLR L;
CLR Q;
JNB E,;
;
JB E,;
SETB L;
SETB Q;
SJMP REPEAT;
;
;
ALARM: MOV R6, #5; ()ß5
L3: CLR L;
CALL ONESEC; 1
SETB L;
;
MOV R5,#5;
L2: MOV R4, #200; 0.2
L1: MOV R3, #248; 1
CPL S; S
DJNZ R3,; 0.5
DJNZ R4,L1;
DJNZ R5,L2;
DJNZ R6,L3;
JB D,REPEAT; , D=1
MOV R6,#1;
SJMP L3;
;
; 50 , T\C0
; 2
DELAY:MOV TMOD, #0001B; T\C0
MOV TH0, #HIGH(NOT(50000-16))
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MOV TH0, #LOW(NOT(50000-16))
SETB TCON.4; T\C0
DEL_W:JNB TCON.5,DEL_W;
ANL TCON,#NOT(30H); T\C0, T\C0
RET;
; 1
; DELAY R7
; 123
ONESEC:MOV R7,#20;
SEC_W: ACALL DELAY; 50
DJNZ R7, SEC_W;
RET;
