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#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit SDA=P2^2; //SDA口设置
sbit SCL=P2^3; //SCL口设置
void delay() //略微延时 6us约>4.7us
{
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
}
void iic_start() //启动信号
{
SDA=1;
SCL=1;
delay();
SDA=0;
delay();
SCL=0;
}
void iic_stop() //停止信号
{
SDA=0;
SCL=1;
delay();
SDA=1;
delay();
SCL=0;
}
void iic_ack() //应答信号
{
uchar i=0;
SCL=1;
delay();
while((SDA==1)&&(i<255))
i++;
SCL=0;
delay();
}
void iic_send_byte(uchar bat) //发送数据
{
uchar i,temp;
temp=bat;
for(i=0;i<=7;i++)
{
temp=temp<<1;
SCL=0;
SDA=CY;
delay();
SCL=1;
delay();
}
SCL=0;
delay();
SDA=1;
delay();
}
uchar iic_rev() //接受数据
{
uchar temp,i;
SCL=0;
delay();
SDA=1;
for(i=0;i<=7;i++)
{
SCL=1;
delay();
temp=(temp<<1)|SDA;
SCL=0;
delay();
}
delay();
return temp;
}
void iic_send_add_byte(uchar add,uchar bat) //向某个地址发送某数据
{
iic_start();
iic_send_byte(0xa2);
iic_ack();
iic_send_byte(add);
iic_ack();
iic_send_byte(bat);
iic_ack();
iic_stop();
}
uchar iic_rec_add_byte(uchar add) //从某个地址读出数据
{
uchar temp;
iic_start();
iic_send_byte(0xa2);
iic_ack();
iic_send_byte(add);
iic_ack();
iic_start();
iic_send_byte(0xa3);
iic_ack();
temp=iic_rev();
iic_stop();
return temp;
}
#define LCD1602_DATAPINS P0
sbit LCD1602_E=P2^7;
sbit LCD1602_RW=P2^5;
sbit LCD1602_RS=P2^6;
void Delay1us(uint a)
{
uint b,c;
for(c=a;c>0;c--)
for(b=110;b>0;b--);
}
void LCD1602_WriteCom(uchar com) //写入命令
{
LCD1602_E=0;
LCD1602_RS=0;
LCD1602_RW=0;
LCD1602_DATAPINS=com; //由于4位的接线是接到P0口的高四位，所以传送高四位不用改
Delay1us(10);
LCD1602_E=1;
Delay1us(10);
LCD1602_E=0;
Delay1us(10);
LCD1602_DATAPINS=com<<4;
Delay1us(10);
LCD1602_E=1;
Delay1us(10);
LCD1602_E=0;
}
void LCD1602_WriteData(uchar dat) //写入数据
{
LCD1602_E=0;
LCD1602_RS=1;
LCD1602_RW=0;
LCD1602_DATAPINS=dat; //由于4位的接线是接到P0口的高四位，所以传送高四位不用改
Delay1us(10);
LCD1602_E=1;
Delay1us(10);
LCD1602_E=0;
LCD1602_DATAPINS=dat<<4;
Delay1us(10);
LCD1602_E=1;
Delay1us(10);
LCD1602_E=0;
}
void LCD1602_Init() //LCD初始化子程序
{
LCD1602_WriteCom(0x32); //将8位总线转为4位总线
LCD1602_WriteCom(0x28); //在四位线下的初始化
LCD1602_WriteCom(0x0c); //开显示不显示光标
LCD1602_WriteCom(0x06); //写一个指针加1
LCD1602_WriteCom(0x01); //清屏
LCD1602_WriteCom(0x80); //设置数据指针起点
}
//----- 主函数---------#ifndef __IIC_H__
#include <reg52.h>
#include <lcd.h>
#include "iic.h"
//-----------延时用于稳定-------------
void delay_kk(uint k)
{
while(k--);
}
void time_init()
{
iic_send_add_byte(0x02,0x50); //0秒
iic_send_add_byte(0x03,0x59); //0分钟
iic_send_add_byte(0x04,0x23); //0小时
iic_send_add_byte(0x05,0x26); //26号
iic_send_add_byte(0x07,0x05); //5月 20世纪的
iic_send_add_byte(0x08,0x14); //2014年
}
void pcf_init()
{
iic_send_add_byte(0x00,0x00); //启动时钟
}
//----------------BCD转10进制-----------
uchar bcd_dec(uchar bat)
{
uchar temp1,temp2,tol;
temp1=bat&0x0f;
temp2=(bat&0xf0)>>4;
tol=temp2*10+temp1;
return tol;
}
//------------LCD1602显示：年,月,日,小时,分钟,秒,
void display_time(uchar sec,min,hour,dat,moom,year)
{
LCD1602_WriteCom(0x80);
LCD1602_WriteData('_');
LCD1602_WriteData('2');
LCD1602_WriteData('0');
LCD1602_WriteData(year/10+48);
LCD1602_WriteData(year%10+48);
LCD1602_WriteData('/');
LCD1602_WriteData(moom+48);
LCD1602_WriteData('/');
LCD1602_WriteData(dat/10+48);
LCD1602_WriteData(dat%10+48);
LCD1602_WriteCom(0xc4);
LCD1602_WriteData(hour/10+48);
LCD1602_WriteData(hour%10+48);
LCD1602_WriteData(':');
LCD1602_WriteData(min/10+48);
LCD1602_WriteData(min%10+48);
LCD1602_WriteData(':');
LCD1602_WriteData(sec/10+48);
LCD1602_WriteData(sec%10+48);
}
void main()
{
uchar sec,min,hour,dat,moom,year,sec1,min1,hour1,dat1,moom1,year1; //PCF8563读出的变量和代转换成的十进制变量
LCD1602_Init();
iic_send_add_byte(0x00,0x20); // 关闭时钟
delay_kk(1000);
time_init(); //时钟芯片初始时间设置
pcf_init();
delay_kk(1000);
while(1)
{
sec=0x7f&iic_rec_add_byte(0x02); //读取秒
min=0x7f&iic_rec_add_byte(0x03); //读取分钟
hour=0x3f&iic_rec_add_byte(0x04); //读取小时
dat=0x3f&iic_rec_add_byte(0x05); //读取天数
moom=0x1f&iic_rec_add_byte(0x07); //读取月
year=0xff&iic_rec_add_byte(0x08); //读取年
sec1=bcd_dec(sec); //将读取的BCD码秒转换成十进制秒以便运算
min1=bcd_dec(min);
hour1=bcd_dec(hour);
dat1=bcd_dec(dat);
moom1=bcd_dec(moom);
year1=bcd_dec(year);
display_time(sec1,min1,hour1,dat1,moom1,year1); //LCD1602显示时间
}
}
编译之后显示2.c(178): warning C318: can't open file 'lcd.h'2.c(179): warning C318: can't open file 'iic.h'
该怎么解决
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