单片机(ISIS 7 Professional)：液晶显示屏代码项目

这一篇文章主要介绍用C语言让液晶显示屏显示想要的内容。

基本电路图如下：

  使用的代码如下：

#include "reg51.h"
#define uchar unsigned char
#define uint unsigned int

sbit RS = P2^0;
sbit RW = P2^1;
sbit E = P2^2;

uchar table1[] = "   WELCOME TO   ";
uchar table2[] = "     MY LCD     ";

void delay_50us(uint t)
{
	uchar i;
	for(;t > 0;t--)
		for(i = 19;i > 0;i--);
}

void write_com(uchar com)
{
	E = 0;
	RS = 0;
	RW = 0;
	P0 = com;
	delay_50us(10);
	E = 1;
	delay_50us(20);
	E = 0;
}

void write_data(uchar dat)
{
	E = 0;
	RS = 1;
	RW = 0;
	P0 = dat;
	delay_50us(10);
	E = 1;
	delay_50us(20);
	E = 0;
}

void init(void)
{
	delay_50us(300);
	write_com(0x38);
	delay_50us(100);
	write_com(0x38);
	delay_50us(100);
	write_com(0x38);
	write_com(0x38);
	write_com(0x08);
	write_com(0x01);
	write_com(0x06);
	write_com(0x0c);
}

void main()
{
	uchar i;
	init();
	
	write_com(0x80);
	for(i = 0;i < 16;i++)
	{
		write_data(table1[i]);
		delay_50us(10);
	}
	
	write_com(0x80 + 0x40);
	for(i = 0;i < 16;i++)
	{
		write_data(table2[i]);
		delay_50us(10);
	}
	
	while(1);
}
/*仅供学习参考*/