求帮忙啊小弟初学51 做信号发生器出现问题附位图加程序

*本帖最后由古朩寒湶于 2012-5-18 13:38 编辑*

本帖最后由古朩寒湶于 2012-5-18 13:38 编辑

ORG    00H
SQU_K BIT  P3.4
SAW_K BIT  P3.5
TRI_K BIT  P3.6
SIN_K BIT  P3.7

SQU_L BIT  P1.0
SAW_L BIT  P1.1
TRI_L BIT  P1.2
SIN_L BIT  P1.3

START:
MOV  P1, #0FFH
MOV  P2, #0FFH
MOV  P3, #0FFH
MOV  DPTR,#SIN_TAB
MAIN:
MOV P0, #00H
JNB SQU_K,S1
SETB SQU_L
JNB SAW_K,S2
SETB SAW_L
JNB TRI_K,S3
SETB TRI_L
JNB SIN_K,S4
SETB SIN_L
SJMP MAIN
S1: CLR    SQU_L
   LCALL SQUARE
   SJMP MAIN
S2: CLR    SAW_L
   LCALL SAWTOOTH
   SJMP MAIN
S3: CLR    TRI_L
   LCALL TRIANG
   SJMP MAIN
S4: CLR    SIN_L
   LCALL SINWAVE
   SJMP MAIN
SQUARE:

   MOV    R0,#00H
J11:  MOV    P0,#0FFH
   MOV    P2,#0FFH
   MOV    A,P2
   CPL    A
   MOV    R3,A
L11:  DEC    R3
   CJNE R3,#255,L11
   INC    R0
   INC    R0
   CJNE R0,#254,J11
   MOV    R0,#00H
J12:  MOV    P0,#00H
   MOV    P2,#0FFH
   MOV    A,P2
   CPL    A
   MOV    R3,A
L12:  DEC    R3
   CJNE R3,#255,L12
   INC    R0
   INC    R0
   CJNE R0,#254,J12
   MOV    R0,#00H
   RET
SAWTOOTH:
      ; MOV    DPTR,#0DFFFH
;  MOVX @DPTR,A
   CLR    A
   MOV    R7,A
J21:  MOV    P0,R7
   MOV    P2,#0FFH
   MOV    A ,P2
   CPL    A
   MOV    R3,A
L21:  DEC    R3
   CJNE R3,#255,L21
   INC    R7
INC    R7
INC    R7
INC    R7
   CJNE R7,#251,J21
   RET
TRIANG:
   MOV    R7,#00H
J31:  MOV    P0,R7
   MOV    P2,#0FFH
   MOV    A,P2
   CPL    A
   MOV    R3,A
L31:  DEC    R3
   CJNE R3,#255,L31
   INC    R7
   INC    R7
INC    R7
   CJNE R7,#253,J31
J32:  MOV    P0,R7
   MOV    P2,#0FFH
   MOV    A,P2
   CPL    A
   MOV    R3,A
L32:  DEC    R3
   CJNE R3,#255,L32
   DEC    R7
   DEC    R7
DEC    R7
   CJNE R7,#00H,J32
   RET
SINWAVE:

   MOV R0,#00H
K41:  MOV A,R0
   MOVC A,@A+DPTR
   MOV P0,A
   INC R0
   MOV P2,#0FFH
   MOV A,P2
   CPL A
   MOV R3,A
L41:  DEC R3
   CJNE R3,#255,L41
   CJNE R0,#92,K41
K42:  DEC R0
   MOV A,R0
   MOVC A,@A+DPTR
   MOV P0,A
   MOV P2,#0FFH
   MOV A,P2
   CPL A
   MOV R3,A
L42:  DEC R3
   CJNE R3,#255,L42
   CJNE R0,#0,K42
   RET
SIN_TAB:

   DB    0,0,0,0
   DB    1,1,2,3,4,5,6,8
   DB    9,11,13,15,17,19,22,24
   DB    27,30,33,36,39,42,46,49
   DB    53,56,60,64,68,72,76,80
   DB    84,88,92,97,101,105,110,114
   DB    119,123,128,132,136,141,145,150
   DB    154,158,163,167,171,175,179,183
   DB    187,191,195,199,202,206,209,213
   DB    216,219,222,225,228,231,233,236
   DB    238,240,242,244,246,247,249,250
   DB    251,252,253,254,254,255,255,255
   END

唐琪瑶 · 2012-5-18 13:32:45

位图上不来咋弄？？？

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求帮忙啊 小弟初学51 做信号发生器 出现问题 附位图加程序

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求帮忙啊小弟初学51 做信号发生器出现问题附位图加程序