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#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define NOP _nop_()
sbit LCD_RS=P2^6; sbit LCD_RW=P2^5; sbit LCD_EP=P2^7; sbit PCF_SCL=P2^0; sbit PCF_SDA=P2^1;
LCD_INIT(); LCD_WC(uchar dat); LCD_DELAY(uchar ms); bit LCD_BZ(); LCD_WD(uchar dat);
dishow1(); void ConvertASCII (void); void Lcd(); unsigned int D[16];
unsigned char rd[6]; void GetTimer();
delay();delays();
IRcvStr(uchar suba,num); ISendStr(uchar suba,uchar mdata); ISendbyte(uchar c);void WaitACK();
void Ack_I2c(bit a); uchar RcvByte(); void SendByte(uchar c) ;void Stop_I2c(); void Start_I2c();
uchar code Cutime[]={"Current time is:"};
uchar code Cudate[]={"Current date is:"};
uchar code Cuweek[]={"Current week is:"};
uchar code time[]={"Time"};
uchar show[10]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};
uchar dat,i; char temp[15]; uchar td[5]={0x32,0x30,0x31,0x30,'/'};
uchar week[7][3]={{'S','u','n'},{'M','o','n'},{'T','u','e'},{'W','e','d'},{'T','h','u'},{'F','r','i'},{'S','t','a'}};
void main()
{
LCD_INIT();
ISendStr(0,0);delays();
while(1)
Lcd();
}
void Lcd()
{
GetTimer();
ConvertASCII ();
LCD_WC(0xc8);
LCD_DELAY(1);
for (i=7;i<15;i++)
{
LCD_WD(temp[i]);
}
LCD_WC(0x85);
for (i=1;i<6;i++)
{
LCD_WD(temp[i]);
}
LCD_WC(0x8d);
for(i=0;i<3;i++)
{
LCD_WD(week[temp[0]][i]);
}
}
void GetTimer()
{
delays();
IRcvStr(2,6); //读现在的时、分、秒
rd[0]&=0x7f;
rd[1]&=0x7f;
rd[2]&=0x3f;
rd[3]&=0x3f;
rd[4]&=0x07;
rd[5]&=0x1f;
}
void ConvertASCII (void)
{
temp[0]=rd[5]&0x0f;
//*********月/日********
temp[1]=show[rd[4]>>4]; //月
temp[2]=show[rd[4]&0x0f];
temp[3]='/';
temp[4]=show[rd[3]>>4]; // 日
temp[5]=show[rd[3]&0x0f];
//*********时/分/秒********
temp[7]=show[rd[2]>>4]; //时
temp[8]=show[rd[2]&0x0f];
temp[9]=':';
temp[10]=show[rd[1]>>4]; //分
temp[11]=show[rd[1]&0x0f];
temp[12]=':';
temp[13]=show[rd[0]>>4]; // 秒
temp[14]=show[rd[0]&0x0f];
}
dishow1()
{
LCD_WC(0x07);
LCD_WC(0x90);
i=0;
while(i<16)
{
LCD_WD( Cutime[i]);
i++;
LCD_DELAY(45);
}
}
LCD_WD(uchar dat)
{
while(LCD_BZ());
LCD_RS=1;
LCD_RW=LCD_EP=0;
NOP;NOP;
P0=dat;
NOP;NOP;NOP;NOP;
LCD_EP=1;
NOP;NOP;NOP;NOP;
LCD_EP=0;
}
LCD_INIT()
{
LCD_DELAY(5);
LCD_WC(0x38);
LCD_DELAY(1);
LCD_WC(0x0c);
LCD_DELAY(1);
LCD_WC(0x06);
LCD_DELAY(1);
LCD_WC(0x01);
LCD_DELAY(1);
for (i=0;i<5;i++)
{
LCD_WD(td[i]);
}
}
bit LCD_BZ()
{
bit BZ;
LCD_RS=0; LCD_RW=1;
LCD_EP=1;
NOP;NOP;NOP;NOP;
BZ=(bit)(P0 & 0x80);
LCD_EP=0;
return BZ;
}
LCD_DELAY(uchar ms)
{
uchar datams;
while(ms--)
for(datams=0;datams<250;datams++);
}
LCD_WC(uchar dat)
{
while(LCD_BZ());
LCD_RS=LCD_RW=LCD_EP=0;
NOP;NOP;
P0=dat;
NOP;NOP;NOP;NOP;
LCD_EP=1;
NOP;NOP;NOP;NOP;
LCD_EP=0;
}
IRcvStr(uchar suba,num)
{
uchar j;
Start_I2c();
delay();
SendByte(0xa0);
delay();
SendByte(suba);
delay();
Start_I2c();
delay();
SendByte(0xa1);
delay();
for(j=0;j<num;j++)
{
rd[j]=RcvByte();
delay();
if(j<num-1)Ack_I2c(0);
}
Ack_I2c(1);
delay();
Stop_I2c();
delay();
}
ISendStr(uchar suba,uchar mdata)
{
Start_I2c();
SendByte(0xa0);
delay();
SendByte(suba);
delay();
SendByte(mdata);
delay();
Stop_I2c();
delay();
}
void Ack_I2c(bit a)
{
PCF_SDA=a;
delay();
PCF_SCL=1;
delay();
PCF_SCL=0;
delay();
}
uchar RcvByte()
{
uchar BitCnt,retc;
PCF_SDA=1;
for(BitCnt=0;BitCnt<8;BitCnt++)
{
PCF_SCL=1;
delay();
retc=retc<<1;
retc|=PCF_SDA;
PCF_SCL=0;
delay();
}
delay();
return(retc);
delay();
}
void SendByte(uchar c)
{
uchar BitCnt;
for(BitCnt=0;BitCnt<8;BitCnt++)
{
if(c&0x80)PCF_SDA=1;
else PCF_SDA=0;
c=c<<1;
PCF_SCL=1;
delay();
PCF_SCL=0;
delay();
}
delay();
WaitACK();
}
void WaitACK()
{
uchar errtime=20;
PCF_SDA=1;
delay();
PCF_SCL=1;
delay();
while(PCF_SDA)
{
errtime--;
delay();
if(!errtime) Stop_I2c();
}
PCF_SCL=0;
delay();
}
void Stop_I2c()
{
PCF_SDA=0;
delay();
PCF_SCL=1;
delay();
PCF_SDA=1;
delay();
PCF_SCL=0;
}
void Start_I2c()
{
PCF_SDA=1;
delay();
PCF_SCL=1;
delay();
PCF_SDA=0;
delay();
PCF_SCL=0;
NOP;NOP;
}
delay()
{
uchar aa;
for(aa=0;aa<50;aa++);
}
delays()
{
uchar bb,aa;
for(aa=0;aa<10;aa++)
for(bb=0;bb<100;bb++);
}
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