+++

可设置温度上下限的温控

#ifndef _lcd1602_h_
#define _lcd1602_h_
#include<ds1302.h>
uchar xdata lcdwc _at_ 0xfceb; //命令写
uchar xdata lcdrc _at_ 0xfeeb; //命令读
uchar xdata lcdwd _at_ 0xfdeb; //数据写
uchar xdata lcdrd _at_ 0xffeb; //数据读
/*测忙信号*/
bit lcd_busy()
{
	return (bit)(lcdrc&0x80);
}
/*写数据*/
void write_dat(uchar dat)
{
	while(lcd_busy());
	lcdwd=dat;
}
/*写命令*/
void write_cmd(uchar cmd)
{
	while(lcd_busy());
	lcdwc=cmd;
}
/*LCD初始化*/
void init_lcd()
{
	write_cmd(0x38);
	write_cmd(0x0c);
	write_cmd(0x06);
	write_cmd(0x01);
}
void print(uchar *str)
{
   while(*str!='\0')
	  {
	     write_dat(*str);
		 str++;
	  }
}
#endif  //一定不能掉