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這個(gè)是源碼，源碼和仿真都在附件
#include"reg51.h"
#include"intrins.h"
#include"absacc.h"
#define busy 0x80
#define uchar unsigned char
#define uint unsigned int
sbit RS=P2^6;
sbit RW=P2^5;
sbit E=P2^7;
sbit KEY1=P3^1;
sbit KEY2=P3^0;
sbit KEY3=P3^2;
uchar code tab[8]={0x02,0x06,0x04,0x0c,0x08,0x09,0x01,0x03};
uchar temp;
void delay(uchar k)
{
uint i,j;
for(i=0;i<k;i++)
{
for(j=0;j<60;j++)
{;}
}
}
void test_1602busy()
{
P0=0xFF;
E=1;
RS=0;
RW=1;
_nop_();
_nop_();
while(P0&busy)
{ E=0;
_nop_();
E=1;
_nop_();
}
E=0;
}
void write_1602Command(uchar co)
{
test_1602busy();
RS=0;
RW=0;
E=0;
_nop_();
P0=co;
_nop_();
E=1;
_nop_();
E=0;
}
void write_1602Data(uchar Data)
{
test_1602busy();
P0=Data;
RS=1;
RW=0;
E=1;
_nop_();
E=0;
}
void init_1602(void)
{
write_1602Command(0x38);
delay(5);
write_1602Command(0x01);
delay(5);
write_1602Command(0x06);
delay(5);
write_1602Command(0x0F);
delay(5);
write_1602Command(0x0C);
}
void DisplayOneChar(uchar X,uchar Y,uchar DData)
{
Y&=1;
X&=15;
if(Y)X|=0x40;
X|=0x80;
write_1602Command(X);
write_1602Data(DData);
}
void display_1602(uchar *DData,X,Y)
{
uchar ListLength=0;
Y&=0x01;
X&=0x0F;
while(X<16)
{
DisplayOneChar(X,Y,DData[ListLength]);
ListLength ++;
X++;
}
}
void main()
{
uchar i=0;
uchar delay_v=100;
uchar flag=0;
P1=0xFF;
P2=0xFF;
init_1602();
display_1602("STA: SPD:",0,0);
display_1602("RUN: ",0,1);
while(1)
{
if(KEY2==1)DisplayOneChar(4,0,'Z');
else DisplayOneChar(4,0,'F');
if(KEY3==0)
{
i++;
i=i%3;
while(KEY3==0)
{;}
}
switch(i)
{
case 0:delay_v=100;DisplayOneChar(13,0,'1');break;
case 1:delay_v=75;DisplayOneChar(13,0,'2');break;
case 2:delay_v=50;DisplayOneChar(13,0,'3');break;
}
if(KEY1==0)
{
display_1602(" RUN:on ",0,1);
if(flag==0)
{
if(KEY2==1)
{temp=0;
P1=tab[temp];
flag=1;
delay(delay_v);
}
if(KEY2==0)
{
temp=6;
P1=tab[temp];
flag=1;
delay(delay_v);
}
}
if(KEY2==1)
{temp++;
if(temp==8)
{temp=0;}
P1=tab[temp];
delay(delay_v );
}
if(KEY2==0)
{temp--;
if(temp==0xFF)
{temp=7;}
P1=tab[temp];
delay(delay_v);
}
}
else display_1602(" RUN:off ",0,1);
}
}
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