exp_1.c

1602显示程序（51版）

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
#define rowkey()  (~P2)&0x0f
uchar i,j;
uchar code table1[]="I love c51";
uchar code table2[]="Zhaozaiyou";
sbit RS=P1^2;
sbit RW=P1^1;
sbit E=P1^0;
void delay(uchar);
void write_comd(uchar);
void write_data(uchar);
void debouncer(void);
void scanner(void);
void main()
{ 
delay(500);
write_comd(0x01);
write_comd(0x38);
write_comd(0x0f);
write_comd(0x06);
write_comd(0X3C); // 功能设置 ：2行显示模式，数据为8位。还有字体的设置。
write_comd(0x80+0x5); //设置第一行地址指针
write_data(table1);
write_comd(0Xc0+6); // 设置第二行地址指针
write_data(table2);
delay(200);
while(1);
} 
void delay(uchar z)
{
uchar i,j;
for(j=z;j>0;j--) 
for(i=125;i>0;i--); 
} 

void write_comd(uchar com)
{
RS=0;
RW=0;
delay(5);
E=1;
P0=com;
E=0;
delay(5);

}
void write_data(uchar date)
{
RS=1;
RW=0;
E=1;
P0=date;
delay(5);
E=0;
}