No.16219
作者：雪竹
邮件：kedy_111@163.com
ID：6635
登陆：1次
文章数：1篇
最后登陆IP：
最后登陆：2002/11/12 9:34:00
注册：2002/11/12 9:34:00
财富：6
发帖时间：2002/12/22 19:12:00
发贴者IP：202.113.2.244
标题：雪竹:硬件:（LCD）HD44780的编程问题
摘要：No.16219硬件:（LCD）HD44780的编程问题 我想用单片机控制LCD显示2*16字符。所用LCD控制器HD44780的，原程序编写如下：
不知什么原因，没有显示任何字符（硬件连接不会有问题）#include<reg51.h> #define LCD_DB P1 sbit LCD_RS=P3^3;
sbit LCD_WR=P3^4;
sbit LCD_E=P3^5;
void delay(unsigned int time);
void write_code(unsigned char x);
void write_data(unsigned char x);
void read_status(unsigned char x);
unsigned char read_code(void);
unsigned char read_data(void);
main()
{
//---------------------------------------------Initiate
delay(100);
write_code(0x30);
delay(100);
write_code(0x30);
delay(100);
write_code(0x30);
while((read_code()&0x80)!=0x00);
write_code(0x38);
while((read_code()&0x80)!=0x00);
write_code(0x08);
while((read_code()&0x80)!=0x00);
write_code(0x01);
while((read_code()&0x80)!=0x00);
write_code(0x06);
while((read_code()&0x80)!=0x00);
write_code(0x10);
while((read_code()&0x80)!=0x00);
write_code(0x0c);
while((read_code()&0x80)!=0x00); //=======================================================
write_code(0x01); //Clear display
while((read_code()&0x80)!=0x00);
write_code(0x38); //1 Line 5*7
while((read_code()&0x80)!=0x00);
write_code(0x0e); &nbs ......
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