#include

#define uchar unsigned char
#define uint unsigned int
//定義LCD1602的端口應(yīng)用
#define RS_CLI PORTB&=~BIT(PB1)
#define RS_SEI PORTB|=BIT(PB1)

#define RW_CLI PORTB&=~BIT(PB2)
#define RW_SEI PORTB|=BIT(PB2)

#define EN_CLI PORTB&=~BIT(PB3)
#define EN_SEI PORTB|=BIT(PB3)
//定義DS1302數(shù)據(jù)端口
#define RST_CLI PORTC&=~BIT(PC4)
#define RST_SEI PORTC|=BIT(PC4)
#define RST_IN DDRC&=~BIT(PC4)
#define RST_OUT DDRC|=BIT(PC4)

#define SCLK_CLI PORTC&=~BIT(PC2)
#define SCLK_SEI PORTC|=BIT(PC2)
#define SCLK_IN DDRC&=~BIT(PC2)
#define SCLK_OUT DDRC|=BIT(PC2)

#define IO_CLI PORTC&=~BIT(PC3)
#define IO_SEI PORTC|=BIT(PC3)
#define IO_R PINC&BIT(PC3)
#define IO_IN DDRC&=~BIT(PC3)
#define IO_OUT DDRC|=BIT(PC3)

#define ds1302_sec_add0x80//秒數(shù)據(jù)地址
#define ds1302_min_add0x82//分?jǐn)?shù)據(jù)地址
#define ds1302_hr_add0x84//時(shí)數(shù)據(jù)地址
#define ds1302_date_add0x86//日數(shù)據(jù)地址
#define ds1302_month_add0x88//月數(shù)據(jù)地址
#define ds1302_day_add0x8a//星期數(shù)據(jù)地址
#define ds1302_year_add0x8c//年數(shù)據(jù)地址
#define ds1302_control_add0x8e//控制數(shù)據(jù)地址
#define ds1302_charger_add0x90
#define ds1302_clkburst_add0xbe

unsigned char time_buf[8] = {0x20,0x09,0x04,0x28,0x17,0x13,0x00,0x02};
unsigned char time_buf1[8] = {0x20,0x10,0x04,0x12,0x23,0x18,0x22,0x00};

void DS1302_WriteByte(uchar addr,uchar data)
{
uchar i=0;
RST_SEI; //啟動(dòng)DS1302,進(jìn)行寫操作
IO_OUT; //定義數(shù)據(jù)口為輸出模式
addr=addr&0xfe; //最低位為0表示寫入。為1時(shí)表示讀取
for(i=0;i<8;i++)
{
if(addr&0x01) //DS1320發(fā)送數(shù)據(jù)是先低位后高位，當(dāng)傳送第一位時(shí)與0x01相與，
{ //如果相等，表示傳送的位為高電平，不等則為低電平,第一次送完第一次后ADDR左移一位準(zhǔn)備傳送第二位數(shù)據(jù)
IO_SEI; //如果相等表示傳送的位為高電平，不等則為低電平，如此循環(huán)8次之后，要寫入的數(shù)據(jù)就寫完了
}
else
{
IO_CLI;
}
SCLK_SEI;
SCLK_CLI;
addr=addr>>1;
}
IO_OUT;
for(i=0;i<8;i++)
{
if(data&0x01)
{
IO_SEI;
}
else
{
IO_CLI;
}
SCLK_SEI;
SCLK_CLI;
data=data>>1;
}
RST_CLI;
}

uchar DS1302_ReadByte(uchar addr)
{
uchar temp=0,i=0;
RST_SEI;
IO_OUT;
addr=addr|0x01;
for(i=0;i<8;i++)
{
if(addr&0x01)
{
IO_SEI;
}
else
{
IO_CLI;
}
SCLK_SEI;
SCLK_CLI;
addr=addr>>1;
}
IO_IN;
for(i=0;i<8;i++)//讀數(shù)據(jù)和寫數(shù)據(jù)正好相反，手法相同；先判斷讀取到的值是高位還是低位，在經(jīng)行保存
{
temp=temp>>1;//為下一次保存數(shù)據(jù)做準(zhǔn)備先讀低位后讀高位
if(IO_R)//如果讀取到的數(shù)據(jù)為高，則置高
{
temp|=0x80;
}
else//如果讀取到的數(shù)據(jù)為低，則啦低
{
temp&=0x7f;
}
SCLK_SEI;
SCLK_CLI;
}
RST_CLI;
return temp;
}

void DS1302_Init(void)
{
RST_CLI;
SCLK_CLI;
RST_OUT;
SCLK_OUT;
}

void DS1302_WriteTime(void)
{
DS1302_WriteByte(ds1302_control_add,0x00);//當(dāng)寫保護(hù)寄存器的最高位為0 時(shí)允許數(shù)據(jù)寫入寄存器,
//當(dāng)寫保護(hù)寄存器的最高位為1 時(shí)禁止數(shù)據(jù)寫入寄存器
DS1302_WriteByte(ds1302_sec_add,0x80);//秒寄存器的第7 位時(shí)鐘停止位設(shè)置為0 時(shí)起動(dòng)時(shí)鐘開始、設(shè)置為1時(shí)時(shí)鐘停止運(yùn)行

DS1302_WriteByte(ds1302_year_add,0x10); //年
DS1302_WriteByte(ds1302_month_add,0x12); //月
DS1302_WriteByte(ds1302_day_add,0x04); //星期
DS1302_WriteByte(ds1302_date_add,0x23); //日
DS1302_WriteByte(ds1302_hr_add,0x16); //小時(shí)
DS1302_WriteByte(ds1302_min_add,0x00); //分
DS1302_WriteByte(ds1302_sec_add,0x00); //秒

DS1302_WriteByte(ds1302_control_add,0x80);//當(dāng)寫保護(hù)寄存器的最高位為1 時(shí)禁止數(shù)據(jù)寫入寄存器
}

void DS1302_WriteTime1(void)
{
uchar i=0,addr=ds1302_year_add;
DS1302_WriteByte(ds1302_control_add,0x00);//當(dāng)寫保護(hù)寄存器的最高位為0 時(shí)允許數(shù)據(jù)寫入寄存器,
//當(dāng)寫保護(hù)寄存器的最高位為1 時(shí)禁止數(shù)據(jù)寫入寄存器
DS1302_WriteByte(ds1302_sec_add,0x80);//秒寄存器的第7 位時(shí)鐘停止位設(shè)置為0 時(shí)起動(dòng)時(shí)鐘開始、設(shè)置為1時(shí)時(shí)鐘停止運(yùn)行
for(i=1;i<8;i++)
{
DS1302_WriteByte(addr,time_buf1[i]);
addr-=2;
}
DS1302_WriteByte(ds1302_control_add,0x80);//當(dāng)寫保護(hù)寄存器的最高位為1 時(shí)禁止數(shù)據(jù)寫入寄存器
}

void DS1302_GetTime(void)
{
time_buf[1]=DS1302_ReadByte(ds1302_year_add);
time_buf[2]=DS1302_ReadByte(ds1302_month_add);
time_buf[3]=DS1302_ReadByte(ds1302_date_add);
time_buf[4]=DS1302_ReadByte(ds1302_day_add);
time_buf[5]=DS1302_ReadByte(ds1302_hr_add);
time_buf[6]=DS1302_ReadByte(ds1302_min_add);
time_buf[7]=(DS1302_ReadByte(ds1302_sec_add))&0x7f;
}

void DS1302_GetTime1(void)
{
uchar i=0,addr=ds1302_year_add;
for(i=1;i<8;i++)
{
time_buf1[i]=DS1302_ReadByte(addr);//0x8c=ds1302_year_add
addr=addr-2;
}
}

void delay(uint ms)
{
uint i=0,j=0;
for(i=ms;i>0;i--)
for(j=1141;j>0;j--);
}

void delay_us(uint us)
{
uint i,j;
for(i=0;i<8;i++)
{
for(j=0;j NOP();
}
}

void port_init(void)
{
DDRB=0XFF;
PORTB=0XFF;
}

void LCD_EN_Write(void)
{
EN_CLI;
delay_us(5);
EN_SEI;
delay_us(5);
}

void LCD_Write(uchar icom,uchar data)
{
if(0==icom) //寫命令
RS_CLI;
else //寫數(shù)據(jù)
RS_SEI;
RW_CLI;
PORTB&=0X0F; //先清除PORTB的高四位
PORTB|=(data&0XF0); //將寫入的數(shù)據(jù)取出高四位先發(fā)送
LCD_EN_Write(); //使能LCD
delay_us(35); //延時(shí) 確保高四位的寫入正確
data=data<<4; //屏蔽高四位
PORTB&=0X0F; // 取出數(shù)據(jù)的低四位數(shù)據(jù)
PORTB|=(data&0XF0); //發(fā)送低四位數(shù)據(jù)
LCD_EN_Write(); //使能LCD
}

void LCD_Clear(void)
{
LCD_Write(0,0X01);
delay(5);
}

void lcd_init(void)
{
delay(15);
LCD_Write(0,0x28);//四線數(shù)據(jù)線、16X2顯示、5x7點(diǎn)陣
LCD_EN_Write(); //這句很重要，切忌，丟失可能LCD就是一塊黑板，什么都沒有
delay(5);
LCD_Write(0,0x28);//四線數(shù)據(jù)線、16X2顯示、5x7點(diǎn)陣
LCD_Write(0,0x08);//關(guān)閉顯示
delay(5);
LCD_Write(0,0x01);//清除屏幕顯示

LCD_Write(0,0x06);//當(dāng)讀寫一字符后地址指針加一光標(biāo)加一，整屏不移動(dòng)
delay(5);

LCD_Write(0,0x0c);//開顯示、顯示光標(biāo)、光標(biāo)閃爍
delay(5);
}

void LCD_Write_Byte(uchar Line,uchar addr,uchar data)
{
if(1==Line)
LCD_Write(0,0x80+addr);
else if(2==Line)
LCD_Write(0,0xc0+addr);
LCD_Write(1,data);
}

void LCD_Write_Str(uchar Line,uchar addr,uchar *p)
{
if(1==Line)
LCD_Write(0,0x80+addr);
else if(2==Line)
LCD_Write(0,0xc0+addr);
while(*p)
{
LCD_Write(1,*p);
p++;
}
}

void DS1302_DispalyTime(void)
{
uchar temp;
temp=(time_buf[0]>>4)+0; //年顯示
LCD_Write_Byte(1,0,temp);
temp=(time_buf[0]&0x0f)+0;
LCD_Write_Byte(1,1,temp);
temp=(time_buf[1]>>4)+0;
LCD_Write_Byte(1,2,temp);
temp=(time_buf[1]&0x0f)+0;
LCD_Write_Byte(1,3,temp);
LCD_Write_Byte(1,4,-);


temp=(time_buf[2]>>4)+0; //月顯示
LCD_Write_Byte(1,5,temp);
temp=(time_buf[2]&0x0f)+0;
LCD_Write_Byte(1,6,temp);
LCD_Write_Byte(1,7,-);

temp=(time_buf[3]>>4)+0; //日顯示
LCD_Write_Byte(1,8,temp);
temp=(time_buf[3]&0x0f)+0;
LCD_Write_Byte(1,9,temp);

LCD_Write_Str(2,0,"week:"); //星期顯示
temp=(time_buf[4])+0;
LCD_Write_Byte(2,5,temp);

temp=(time_buf[5]>>4)+0; //時(shí)顯示
LCD_Write_Byte(2,8,temp);
temp=(time_buf[5]&0x0f)+0;
LCD_Write_Byte(2,9,temp);
LCD_Write_Byte(2,10,:);

temp=(time_buf[6]>>4)+0; //分顯示
LCD_Write_Byte(2,11,temp);
temp=(time_buf[6]&0x0f)+0;
LCD_Write_Byte(2,12,temp);
LCD_Write_Byte(2,13,:);

temp=(time_buf[7]>>4)+0; //秒顯示
LCD_Write_Byte(2,14,temp);
temp=(time_buf[7]&0x0f)+0;
LCD_Write_Byte(2,15,temp);
}

void DS1302_DispalyTime1(void)
{
uchar temp;
temp=(time_buf1[0]>>4)+0; //年顯示
LCD_Write_Byte(1,0,temp);
temp=(time_buf1[0]&0x0f)+0;
LCD_Write_Byte(1,1,temp);
temp=(time_buf1[1]>>4)+0;
LCD_Write_Byte(1,2,temp);
temp=(time_buf1[1]&0x0f)+0;
LCD_Write_Byte(1,3,temp);
LCD_Write_Byte(1,4,-);

LCD_Write_Str(2,0,"week:"); //星期顯示
temp=(time_buf1[2])+0;
LCD_Write_Byte(2,5,temp);

temp=(time_buf1[3]>>4)+0; //月顯示
LCD_Write_Byte(1,5,temp);
temp=(time_buf1[3]&0x0f)+0;
LCD_Write_Byte(1,6,temp);
LCD_Write_Byte(1,7,-);

temp=(time_buf1[4]>>4)+0; //日顯示
LCD_Write_Byte(1,8,temp);
temp=(time_buf1[4]&0x0f)+0;
LCD_Write_Byte(1,9,temp);



temp=(time_buf1[5]>>4)+0; //時(shí)顯示
LCD_Write_Byte(2,8,temp);
temp=(time_buf1[5]&0x0f)+0;
LCD_Write_Byte(2,9,temp);
LCD_Write_Byte(2,10,:);

temp=(time_buf1[6]>>4)+0; //分顯示
LCD_Write_Byte(2,11,temp);
temp=(time_buf1[6]&0x0f)+0;
LCD_Write_Byte(2,12,temp);
LCD_Write_Byte(2,13,:);

temp=(time_buf1[7]>>4)+0; //秒顯示
LCD_Write_Byte(2,14,temp);
temp=(time_buf1[7]&0x0f)+0;
LCD_Write_Byte(2,15,temp);
}

void main(void)
{
port_init();
DS1302_Init();
lcd_init();
LCD_Clear();
delay(10);
//DS1302_WriteTime();
DS1302_WriteTime1();
while(1)
{
//DS1302_GetTime();
DS1302_GetTime1();
//DS1302_DispalyTime(); //注釋掉的三條語句也是OK的，調(diào)試一下
DS1302_DispalyTime1();
}
}