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標(biāo)題: 基于51單片機(jī)獨(dú)立式按鍵顯示數(shù)碼管的設(shè)計(jì) [打印本頁]

作者: 13253386146 時(shí)間: 2018-7-26 09:11
標(biāo)題: 基于51單片機(jī)獨(dú)立式按鍵顯示數(shù)碼管的設(shè)計(jì)

獨(dú)立式按鍵顯示鍵號(hào)

ORG 0000H

SJMP  START

ORG 000BH

CPL P3.7

MOV TH0, 30H

MOV TL0, 31H

RETI

START:

INC TMOD

MOV IE, #82H

M_LOOP:

CLR A

JNB P1.0, K0

JNB P1.1, K1

JNB P1.2, K2

JNB P1.3, K3

JNB P1.4, K4

JNB P1.5, K5

JNB P1.6, K6

JNB P1.7, K7

SJMP  M_LOOP

K7: INC A

K6: INC A

K5: INC A

K4: INC A

K3: INC A

K2: INC A

K1: INC A

K0: CLR TR0

PUSH  ACC

ADD A, #(D - $ - 2)

MOVC  A, @A + PC

MOV P0, A

POP ACC

RL A

PUSH  ACC

ADD A, #(M - $ - 3)

MOVC  A, @A + PC

MOV 30H, A

MOV TH0, A

POP ACC

ADD A, #(M - $ - 2)

MOVC  A, @A + PC

MOV 31H, A

MOV TL0, A

SETB  TR0

SJMP  M_LOOP

M:  DW 64580, 64684, 64777, 64820, 64898, 64968, 65030, 65058

D:  DB 0C0H,0F9H,0A4H,0B0H, 99H, 92H,  82H,0F8H, 80H, 90H

END

作者: admin 時(shí)間: 2018-7-26 14:58
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