DS1302控制代碼

作者：時(shí)間：2016-12-01 來(lái)源：網(wǎng)絡(luò)

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兩天的成果，

/*************************************/

#include

#define uint unsigned int

#define uchar unsigned char

uchar year,month,day,week,hours,minutes,seconds;

uchar flag1302,cnt;

/*************************************

控制按鍵

*************************************/

sbit K1=P1^0;

sbit K2=P1^2;

sbit K3=P1^4;

/*************************************

控制LCD液晶顯示

*************************************/

sbit lcdwrite=P2^5;

sbit lcddatecommand=P2^6;

sbit lcde=P2^7;

/*************************************

控制DS1302時(shí)鐘

*************************************/

sbit SCK=P3^6;

sbit RST=P3^5;

sbit SDA=P3^4;

/*************************************

延時(shí)子函數(shù)

*************************************/

void delay(uint z)

{

uint x,y;

for(x=z;x>0;x--)

{

for(y=0;y<=112;y++)

{

}

/*************************************

LCD寫命令函數(shù)

*************************************/

void write_command(uchar command)

{

lcddatecommand=0; //開(kāi)啟寫命令

lcdwrite=0; //只寫不讀

P0=command;

delay(1);

lcde=1; //形成使能E高脈沖

delay(1);

lcde=0; //使能E拉低

}

/*************************************

LCD寫數(shù)據(jù)函數(shù)

*************************************/

void write_date(uchar date)

{

lcddatecommand=1; //開(kāi)啟寫數(shù)據(jù)

lcdwrite=0; //只寫不讀

P0=date;

delay(1);

lcde=1; //形成使能E高脈沖

delay(1);

lcde=0; //使能E拉低

}

/*************************************

LCD屏幕初始化

*************************************/

void lcdInit()

{

lcde=0;

write_command(0x38);//設(shè)置16*2顯示，5*7點(diǎn)陣，8位數(shù)據(jù)接口

write_command(0x0c);//設(shè)置開(kāi)顯示，不顯示光標(biāo)

write_command(0x06);// 寫一個(gè)字符后地址指針加1

write_command(0x01);//顯示清0，數(shù)據(jù)指針清0

}

/*************************************

DS1302寫字節(jié)函數(shù)

*************************************/

void write_1302byte(uchar date)

{

uchar i;

for(i=0;i<8;i++)

{

SCK=0;

SDA=date&0x01;

date=date>>1;

SCK=1;//將電平置為已知狀態(tài)

}

/*************************************

DS1302讀字節(jié)函數(shù)

*************************************/

uchar read_1302byte(uchar address)

{

uchar i,temp;

temp=0x00;

RST=0;

delay(1);

SCK=0;

delay(1);

RST=1;

delay(1);

write_1302byte(address);

for(i=0;i<8;i++)

{

if(SDA==1)

{

temp=temp|0x80; //每次傳輸?shù)妥止?jié)

}

temp=temp>>1;

SCK=1;

delay(1);

SCK=0;

delay(1);

}

return temp;

}

/*************************************

往DS1302中寫數(shù)據(jù)

*************************************/

void write_1302(uchar address,uchar date)

{

RST=0;

delay(1);

SCK=0;

delay(1);

RST=1;

delay(1);

write_1302byte(address);

write_1302byte(date);

RST=0;

}

/*************************************

往DS1302中讀取數(shù)據(jù)

*************************************/

uchar read_1302(uchar address)

{

uchar date;

RST=0;

SCK=0;

RST=1;

write_1302byte(address);

date=read_1302byte(address);

SCK=1;

RST=0;

return date;

}

/*************************************

初始化時(shí)間

*************************************/

void Init_1302()

{

write_1302(0x8e,0x00); //寫入不保護(hù)指令

write_1302(0x80,(14/10)<<4|(14%10));//14秒鐘

write_1302(0x82,(7/10)<<4|(7%10)); //7分鐘

write_1302(0x84,(3/10)<<4|(3%10)); //3小時(shí)

write_1302(0x86,(6/10)<<4|(6%10)); //6日

write_1302(0x88,(6/10)<<4|(6%10)); //6月

write_1302(0x8A,(4/10)<<4|(4%10)); //周四

write_1302(0x8C,(13/10)<<4|(13%10));//13年

write_1302(0x90,0xa5); //打開(kāi)充電功能，選擇2K電阻充電方式

write_1302(0x8e,0x80); //寫保護(hù)

}

/*************************************

時(shí)鐘顯示

*************************************/

void DisplayHours(uchar hours)

{

uchar shi,ge;

shi=hours/10;

ge=hours%10;

write_command(0x06);

write_command(0x80+0x40);

write_date(shi+48);

write_date(ge+48);

write_date(:);

}

/*************************************

分鐘顯示

*************************************/

void DisplayMinutes(uchar minutes)

{

uchar shi,ge;

shi=minutes/10;

ge=minutes%10;

write_command(0x06);

write_command(0x80+0x43);

write_date(shi+48);

write_date(ge+48);

write_date(:);

}

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