mian.c

液晶显示器以其微功耗、体积小、显示内容丰富、超薄轻巧的诸多优点

//#include<picme1687x.h>
#include<pic.h>
#define uchar unsigned char
#define rs RC0
#define rw RC1
#define en RC2
#define data PORTD

const uchar tab[]="welcome to china";

void delay(uchar y)
{
	uchar x;
	for(;y>0;y--)
		for(x=110;x>0;x--);
}

void check_busy()
{
	uchar temp;
	do
	{
		data=0xff;
		rs=0;
		rw=1;
		en=1;
		NOP();
		temp=data;
		temp=temp>>7;
		en=0;
	}while(temp);
}

void write_com(uchar com)
{
	check_busy();
	rs=0;
	rw=0;
	en=1;
	data=com;
	delay(1);
	en=0;
}

void write_dat(uchar dat)
{
	check_busy();
	rs=1;
	rw=0;
	en=1;
	data=dat;
	delay(1);
	en=0;
}

void lcd_init()
{
	write_com(0x38);
	delay(1);
	write_com(0x0f);
	delay(1);
	write_com(0x06);
	delay(1);
	write_com(0x01);
	delay(1);
	write_com(0x80);
}

void main()
{
	uchar i;
	TRISC=0x00;
	TRISD=0x00;
	en=0;
	delay(15);
	lcd_init();
	for(i=0;i<16;i++)
	{
		write_dat(tab[i]);
		delay(1);
	}
	while(1);
}