用51汇编用定时器中断控制四个小灯闪亮

biybly · 发表于 2018-10-13 00:01:19

要求P1.0～P1.4控制4个按键，P0.0-P0.4控制四个灯，P3.2口接一个按键用外部中断0控制所有灯灭，定时器中断让四个灯分别延时1s，2s，3s，4s闪亮，单片机晶振12MZH
。要用汇编语言！！
下面是我自己写的程序最好能在我的基础上改

ORG  0000H
SJMP  MAIN
ORG  000BH
SJMP  CTC0
ORG  0003H
LJMP OUT
ORG  0030H
MAIN:
   MOV SP,#60H
   MOV TMOD,#01H
   MOV TL0,#03CH ;定时器初值50ms
   MOV TH0,#0B0H
   SETB TR0
   SETB EX0
   SETB ET0
   SETB EA
   ACALL SEND ;寄存器初值
M1:    JNB P1.0,L5
   JNB P1.1,L6
   JNB P1.2,L7
   JNB P1.3,L8
L5: MOV R0,#00H
   SJMP L1
L6: MOV R1,#00H
   SJMP L2
L7: MOV R2,#00H
   SJMP L3
L8: MOV R3,#00H
   SJMP L4

L1:  MOV R7,#14H ;定时1s
   DJNZ R7,
L2:  MOV R7,#28H ;定时2s
   DJNZ R7,
L3:  MOV R7,#3CH  ;定时3s
   DJNZ R7,
L4:  MOV R7,#50H ;定时4s
   DJNZ R7,
SEND:
   MOV P0,#0FFH
   MOV R0,#0FFH
   MOV R1,#0FFH
   MOV R2,#0FFH
   MOV R3,#0FFH
   RET
CTC0:
   MOV TL0,#03CH
   MOV TH0,#0B0H
   CJNE R0,#00H,K1
   CJNE R1,#00H,K2
   CJNE R2,#00H,K3
   CJNE R3,#00H,K4

K1:  CPL P0.0
   LJMP M1
K2:  CPL P0.1
   SJMP M1
K3:  CPL P0.3
   LJMP M1
K4:  CPL P0.4
   LJMP M1
   RETI

OUT:
   ACALL SEND
   RETI
   END