keil程序编译无错，但是无法在LCD1602上显示东西

小黄豆 · 发表于 2019-4-1 09:33

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keil程序编译无错，但是无法在LCD1602上显示东西

我打算实现在lcd上显示时分秒功能，但是无法显示，求大神们指导啊！！！要哭了都！！！
#include<reg52.h>
#define unit unsigned int
#define unit unsigned long int
#define unit unsigned char uchar code table[]={'0','1','2','3','4','5','6','7','8','9'};
unsigned char table[];
unsigned char table1[]=" : ";
sbit RS_LCD=P0^7;
sbit RW_LCD=P0^6;
sbit EN_LCD=P0^5;
void init_lcd();
void init_zd();
void Write_com(unsigned char com);
void Write_date(unsigned char date);
void lcd_pos (unsigned char pos);
void delay(unit xms);
void date_processing();
unit sum = 0 ;
unsigned char time_seconds=0;
unsigned char time_minutes=0;
unsigned char time_hours=0;
unsigned char x=0;
void main()
{
unsigned char i;
init_lcd();
init_zd();
while(1);
{
date_processing();
lcd_pos (0x41);
Write_date(table[time_hours/10]);
delay(5);
Write_date(table[time_hours%10]);
delay(5);
for(i=0;i<3;i++)
{
Write_date(table1);
delay(5);
}
Write_date(table[time_minutes/10]);
delay(5);
Write_date(table[time_minutes%10]);
delay(5);
for(i=0;i<3;i++)
{
Write_date(table1);
delay(5);
}
Write_date(table[time_seconds/10]);
delay(5);
Write_date(table[time_seconds%10]);
delay(500);
Write_com(0x01);
}
}
void date_processing()
{
time_hours=sum/3600;
time_minutes=(sum%3600)/60;
time_seconds=(sum%3600)/60;
if(time_hours==24)
{
sum=0;
}
}
void init_zd()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void lcd_pos (unsigned char pos)
{
Write_com(pos|0x80);
}
void IT_0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
x++;
if(x==20)
{
x=0;
sum++;
}
}
void init_lcd()
{
Write_com(0x38);
delay(5);
Write_com(0x0c);
delay(5);
Write_com(0x06);
delay(5);
Write_com(0x01);
delay(5);
}
void Write_com(char com)
{
RS_LCD=0;
RW_LCD=0;
EN_LCD=0;
delay(5);
P2=com;
delay(5);
EN_LCD=1;
delay(5);
EN_LCD=0;
}
void Write_date(unsigned char date)
{
RS_LCD=1;
RW_LCD=0;
EN_LCD=0;
delay(5);
P2=date;
delay(5);
EN_LCD=1;
delay(5);
EN_LCD=0;
}
void delay(unit xms)
{
unit i,j;
for(i=xms;i>0;i--)
for(j=100;j>0;j--)
;
}