Một số chương trình đơn giản với Led đơn

1.Chương trình led sáng nhấp nháy port 1.

ORG 00H

MAIN:

MOV P1,#00H;led tắt hết

CALL DELAY

MOV P1,#0FFH;led sáng hết

CALL DELAY

JMP MAIN

DELAY:;CT tạo trễ

MOV R0,#50

LAP:

NOP

NOP

DJNZ R0,LAP

RET

END

2.Chương trình Led sáng dần port 1

•ORG 00H

MAIN:

•MOV P1,#00000000B;Trạng thái led tắt hết

•CALL DELAY

•MOV P1,#00000001B;Led p1.0 sáng

•CALL DELAY

•MOV P1,#00000011B;led p1.0,p1.1 sáng

•CALL DELAY

•MOV P1,#00000111B;led p1.0,p1.1,p1.2 sáng

•CALL DELAY

•MOV P1,#00001111B

•CALL DELAY

•MOV P1,#00011111B

•CALL DELAY

•MOV P1,#00111111B

•CALL DELAY

•MOV P1,#01111111B

•CALL DELAY

•MOV P1,#11111111B

•CALL DELAY

JMP MAIN

•

DELAY:

•MOV R0,#200

•LAP:

•MOV R1,#200

•LAP2:

•NOP

•NOP

•NOP

•DJNZ R1,LAP2

•DJNZ R0,LAP

•RET

END

3.Chương trình led tắt dần port 1

ORG 00H

•MAIN:

•MOV P1,#11111111B;Trạng thái led sáng hết

•CALL DELAY

•MOV P1,#11111110B;Led p1.0 tắt

•CALL DELAY

•MOV P1,#11111100B;led p1.0 tắt,p1.1 tắt

•CALL DELAY

•MOV P1,#11111000B

•CALL DELAY

•MOV P1,#11110000B

•CALL DELAY

•MOV P1,#11100000B

•CALL DELAY

•MOV P1,#11000000B

•CALL DELAY

•MOV P1,#10000000B

•CALL DELAY

•MOV P1,#00000000B

•CALL DELAY

•JMP MAIN

•

•DELAY:

•MOV R0,#200

•LAP:

•MOV R1,#200

•LAP2:

•NOP

•NOP

•NOP

•DJNZ R1,LAP2

•DJNZ R0,LAP

•RET

•END

4.Sáng dần tắt dần theo chiều ngược lại:

ORG 00H 

MAIN:

CALL CON1

CALL CON2

JMP MAIN

CON1:;SANG DAN

MOV P1,#00000000B

CALL DELAY

MOV P1,#10000000B

CALL DELAY

MOV P1,#11000000B

CALL DELAY

MOV P1,#11100000B

CALL DELAY

MOV P1,#11110000B

CALL DELAY

MOV P1,#11111000B

CALL DELAY

MOV P1,#11111100B

CALL DELAY

MOV P1,#11111110B

CALL DELAY

MOV P1,#11111111B

CALL DELAY

RET

•CON2:;TAT DAN

•MOV P1,#11111111B

•CALL DELAY

•MOV P1,#01111111B

•CALL DELAY

•MOV P1,#00111111B

•CALL DELAY

•MOV P1,#00011111B

•CALL DELAY

•MOV P1,#00001111B

•CALL DELAY

•MOV P1,#00000111B

•CALL DELAY

•MOV P1,#00000011B

•CALL DELAY

•MOV P1,#00000001B

•CALL DELAY

•MOV P1,#00000000B

•CALL DELAY

•RET

•DELAY:

•MOV R0,#200

•LAP:

•MOV R1,#200

•LAP2:

•NOP

•NOP

•NOP

•DJNZ R1,LAP2

•DJNZ R0,LAP

•RET

•END

5,Đèn giao thông không dùng led 7 đoạn:

•

ORG 00H

•MAIN:

• MOV P2,#00100001B;P1.0 và p1.5=1

• CALL DELAY

• MOV P2,#00010010B;p1.2 và p1.4=1

• CALL DELAY1

• MOV P2,#00001100B;p1.3 và p1.4=1

• CALL DELAY2

•JMP MAIN

•

•DELAY:;CT trễ 2.2S

•MOV R0,#200

•LAP:

•MOV R1,#100

•LAP1:

•MOV R3,#100

•LAP2:

•NOP

•NOP

•NOP

•DJNZ R3,LAP2

•DJNZ R1,LAP1

•DJNZ R0,LAP

•RET

DELAY1:;CT trễ 1.1S

MOV R4,#220

LAP4:

MOV R5,#150

LAP5:

MOV R6,#50

LAP6:

NOP

NOP

NOP

DJNZ R6,LAP6

DJNZ R5,LAP5

DJNZ R4,LAP4

RET

DELAY2:;CT trễ 3.3S

MOV R0,#220

LAP7:

MOV R1,#100

LAP8:

MOV R2,#100

LAP9:

NOP

NOP

NOP

DJNZ R2,LAP9

DJNZ R1,LAP8

DJNZ R0,LAP7

RET

END

Phạm Văn Ngọc Anh- 01644326695

Phạm Minh Nhật       - 01649679474 

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