求修改单片机程序

只看该作者 · 2012-5-29 12:40

有一个单片机c程序，可能出问题了，求修改，用液晶,1602显示动态值，AD为0804八位的，显示0-100，具体程序通过调节输入电压，显示0-100
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table[]="WENDU:";
uchar code table1[]="SHEZHI:";
uchar code table2[]={'0','1','2','3','4','5','6','7','8','9','0'};
sbit lcden=P3^4;
sbit lcdrs=P3^5;
sbit dula=P2^6;
sbit wela=P2^7;
sbit beep=P2^3;
sbit wr=P3^6;
sbit rd=P3^7;
uchar num,A1,A2,A3;

void delay(uint z)
{

uint x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);
}
void write_com(uchar com)
{

lcdrs=0;

P0=com;

delay(5);

lcden=1;

delay(5);

lcden=0;
}

void write_data(uchar date)
{

lcdrs=1;

P0=date;

delay(5);

lcden=1;

delay(5);

lcden=0;
}
void init()
{

dula=0;

wela=0;

lcden=0;

write_com(0x38);

write_com(0x0e);

write_com(0x06);

write_com(0x01);
}
void start()

{
wr=1;

delay(20);

wr=0;

delay(20);

wr=1;

}

void main()
{
float adval,B;

while(1)

{init();

start();

delay(1000);

P1=0xff;

rd=1;

delay(10);

rd=0;

adval=P1;

rd=1;

B=adval*20/51;
num=B;
A1=num/100;
A2=num%100/10;
A3=num%10;

for(num=0;num<6;num++)

{

write_data(table[num]);

delay(20);

}

//
write_com(1);

write_com(0x80+0x40);

for(num=0;num<7;num++)

{

write_data(table1[num]);

delay(20);

}

write_com(0x80+0x48);

for(num=0;num<1;num++)

{

write_data(table2[A1]);

delay(20);

}
write_com(0x80+0x49);

for(num=0;num<1;num++)

{

write_data(table2[A2]);

delay(20);

}
write_com(0x80+0x50);

for(num=0;num<1;num++)

{

write_data(table2[A3]);

delay(20);

}

delay(1000);

}

}