lcd1602_driver_12m_spi.h

基于高速51单片机的,带示波器功能的频率计原码,还能分析PWM红外编码.液晶显示.

#include "reg52.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int

#define dat P1
sbit rs=P3^7;
sbit rw=P3^6;
sbit en=P3^2;

void delay_1602(uint time)
{
	while(--time!=0);
}

void write_1602_CMD(uchar temp)
{
	dat=temp;
	en=0;
	rs=0;
	rw=0;
	_nop_();
	_nop_();
	en=1;
	_nop_();
	_nop_();
	_nop_();
	_nop_();
	_nop_();
	en=0;
	delay_1602(200);
}

void write_1602_DDR(uchar temp)
{
	dat=temp;
	en=0;
	rs=1;
	rw=0;	
	_nop_();
	en=1;
	_nop_();
	_nop_();
	_nop_();
	_nop_();
	en=0;
	delay_1602(200);
}

void lcd1602_init()
{
	write_1602_CMD(0x01);
	write_1602_CMD(0x38);
	write_1602_CMD(0x0c);
	write_1602_CMD(0x06);
	write_1602_CMD(0x01);
}

void dis_one_char(uchar x,uchar y,uchar ascii)
{
	uchar p;
	p=64*x+y;
	write_1602_CMD(0x80|p);
	write_1602_DDR(ascii);
}

void dis_cls()
{
	write_1602_CMD(0x01);
}