单片机程序 流水灯、单管、多管等相关程序
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实验一流水灯的显示：ORG 0000H
BEG:SJMP START
ORG 0030H
START:
MOV P1,#0FEH LCALL DELAY
MOV P1,#0F1H
LCALL DELAY
MOV P1,#70H
LCALL DELAY
MOV P1,#10H
LCALL DELAY
MOV P1,#0F3H
LCALL DELAY
MOV P1,#0F0H
LCALL DELAY
MOV P1,#30H
LCALL DELAY
MOV P1,#00H
LCALL DELAY
AJMP START DELAY:PUSH 00H
PUSH 01H
MOV R0,#200
N1:MOV R1,#250
N2:NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DJNZ R1,N2
DJNZ R2,N1
POP 01H
POP 00H
RET
END BEG
实验二单管显示：
ORG 0000H BEG:AJMP START
START:MOV SP,#60H
MOV DPTR,#DM
MOV B,#00H
MOV R1,#9
NEXT:MOV A,B
MOVC A,@A+DPTR
MOV P1,A
LCALL DELAY
INC B
DJNZ R1,NEXT
LJMP START
DELAY:PUSH 00H
PUSH 01H
MOV R0,#200
DL1:MOV R1,#250
DL2:NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DJNZ R1,DL2
DJNZ R0,DL1
POP 01H
POP 00H
RET
DM: DB 089H,086H,0C7H,0C7H,0C0H,0A4H,0C 0H,0F9H,0B0H
END BEG
实验三多管显示：
ORG 0000H
BEG:AJMP START
START:
MOV SP,#60H
MOV DPTR,#DM
N1:
MOV R0,#0
MOV R1,#16
MOV R2,#0FEH
N2:
SETB P3.4
MOV A,R0
MOVC A,@A+DPTR
MOV P1,A
CLR P3.4
SETB P3.5
MOV P1,R2
CLR P3.5
LCALL DELAY
MOV P1,#00H
MOV A,R2
RL A
MOV R2,A
INC R0
DJNZ R1,N2
LCALL DELAY
SJMP START
DM: DB 76H,3FH,73H,79H,38H,79H,6DH,6DH,3 FH,06H,5BH,4FH,66H,6DH,7DH,07H DELAY:PUSH 00H
PUSH 01H
MOV R0,#150
M3:MOV R1,#250
M4:NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DJNZ R1,M4
DJNZ R0,M3
POP 01H
POP 00H
RET
DM1: DB
END BEG 实验四LCD的显示
#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char sbit c_rs=P2^4;
sbit c_rw=P2^5;
sbit c_e=P2^6;
char msg1[]=" It's May 12th. "; char msg2[]=" A sunny day. "; char *M=msg1;
char *N=msg2;
void delay(uint i)
{
while(i--);
}
void write_cmd(uchar dd)
{
c_e=0;
c_rs=0;
c_rw=0;
delay(50);
P0=dd;
c_e=1;
delay(50);
c_e=1;
delay(50);
}
void write_dat(uchar dd)
{
c_e=0;
c_rs=1;
c_rw=0;
delay(50);
P0=dd;
c_e=1;
delay(50);
c_e=0;
delay(50);
}
void lcd_init()
{
write_cmd(0x38);