STC15F2K08S2,P0口不能推挽输出高电平

只看该作者 · 2013-11-9 18:41

MOV A,P4M1             ;M1=0
ANL A,#10011111B       ;P4.6推挽输出
MOV P4M1,A
MOV A,P4M0             ;M0=1
ORL A,#01100000B       ;P4.5推挽输出
MOV P4M0,A

MOV A,P0M1
ANL A,#11111100B       ;P0.0推挽输出
MOV P0M1,A
MOV A,P0M0
ORL A,#00000011B       ;P0.1推挽输出
MOV P0M0,A

CLR A
MOV P2M1,A
CPL A
MOV P2M0,A

mov a,50h          ;50h显示指针
DEC A             ;60h显示缓存区
MOV 50H,A
JZ    DE3          ;1
DEC A
JZ    DE2          ;2
DEC A
JZ    DE1          ;3
DEC A
JZ    DE4          ;4
DEC A
JZ    DE3          ;5
DEC A
JZ    DE2          ;6
DEC A
JZ    DE1          ;7
dec a
JZ    DE4          ;8
DEC A
JZ    DE3          ;9
DEC A
JZ    DE2          ;10
DEC A
JZ    DE1          ;11
DEC A
JZ    DE4          ;12
DEC A
JZ    DE3          ;13
DEC A
JZ    DE2          ;14
DEC A
JZ    DE1          ;15

DE0:                   ;16
MOV A,#0FH
MOV 50H,A          ;50h显示位置指针
MOV 51H,#60H       ;显示缓冲器地址指针

  ; MOV R1,51H
  ; MOV A,@R1
  ; mov P2,A          ;显示数据送P2
  ; SETB P4.5
  ; CLR P0.1
  ; jmp ASD
de4:                   ;
MOV R1,51H
MOV A,@R1
mov P2,A          ;显示数据送P2
INC 51H
setb P4.5
clr p4.6          ;wei=1
jmp asd
   nop
   nop
   nop
   mov  IAP_CONTR,#01100000b ;ap区软复位
de3:                   ;2
MOV R1,51H
MOV A,@R1
mov P2,A          ;显示数据送P2
INC 51H
setb P4.6
clr P0.0
jmp asd
de2:                   ;1
MOV R1,51H
MOV A,@R1
mov P2,A          ;显示数据送P2
INC 51H
setb P0.0
clr P0.1
jmp asd
de1:
MOV R1,51H
MOV A,@R1
mov P2,A          ;显示数据送P2
INC 51H
setb P0.1
clr P4.5
jmp asd
asd:
ret
如上设置，P4.5 P4.6,可以在T0中断控制下输出脉冲，P0.0 P0.1却不能输出脉冲，请高手指点，