ds1307 驅動頭文件，包含 iic 文件和 使用方便的51文件，需要的拿去
defType.h
#include "intrins.h"
//#define MAIN_Fosc 22118400L //定義主時鐘
#define MAIN_Fosc 6000000L //定義主時鐘
//#define MAIN_Fosc 11059200L //定義主時鐘
#define MAIN_Fosc_KHz 6000 //晶振頻率，khz
#define MAIN_Fosc_MHz 6 //晶振頻率，
/**********************************/
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long u32;
typedef unsigned char uchar;
typedef unsigned int uint;
typedef unsigned long ulong;
typedef char bool ;
#define TRUE 1
#define FALSE 0
#define ENABLE 1
#define DISABLE 0
//==================
#define NO_MATTER 0
#define LOW 0
#define HIGH 1
void delay(uchar n)
{
uchar i=n;
while(i--);
}
// 防抖按鍵函數
//p 是一個按鍵位，如p1_1
//exec 是執行語句
#define KeyPress(p,exec) if(p== 0) \
{ \
delay(200); \
if(p== 0) \
exec;\
while(p== 0); \
}
//=====================
/***********************************/
#define NOP _nop_()
#define NOP2 _nop_();_nop_()
#define NOP3 _nop_();_nop_();_nop_()
#define NOP4 _nop_();_nop_();_nop_();_nop_()
#define NOP6 _nop_();_nop_();_nop_();_nop_();_nop_();_nop_()
#define NOP8 _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()
#define NOP10 _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()
#define NOP12 NOP6;NOP6
#define NOP14 NOP8;NOP6
#define NOP16 NOP8;NOP8
#define NOP18 NOP8;NOP10
#define NOP20 NOP10;NOP10
#define NOP22 NOP10;NOP10;NOP2
#define NOP24 NOP10;NOP10;NOP4
#define NOP26 NOP10;NOP10;NOP6
#define NOP28 NOP10;NOP10;NOP8
#define NOP30 NOP10;NOP10;NOP10
#define NOP32 NOP10;NOP10;NOP10;NOP2
#define NOP34 NOP10;NOP10;NOP10;NOP4
#define NOP36 NOP10;NOP10;NOP10;NOP6
#define NOP38 NOP10;NOP10;NOP10;NOP8
#define NOP40 NOP10;NOP10;NOP10;NOP10
#define NOP42 NOP10;NOP10;NOP10;NOP10;NOP2
#define NOP44 NOP10;NOP10;NOP10;NOP10;NOP4
#define NOP46 NOP10;NOP10;NOP10;NOP10;NOP6
#define NOP48 NOP10;NOP10;NOP10;NOP10;NOP8
#define NOP50 NOP10;NOP10;NOP10;NOP10;NOP10
#define NOP52 NOP10;NOP10;NOP10;NOP10;NOP10;NOP2
#define NOP54 NOP10;NOP10;NOP10;NOP10;NOP10;NOP4
#define NOP56 NOP10;NOP10;NOP10;NOP10;NOP10;NOP6
#define NOP58 NOP10;NOP10;NOP10;NOP10;NOP10;NOP8
#define NOP60 NOP10;NOP10;NOP10;NOP10;NOP10;NOP10
iic.h
//define mcu connect for iic bus
sbit SCL=P0^0; //clock line
sbit SDA=P0^1; //data line
#define DELAY_T 2
//the data HIGH to LOW, while the clock is HIGH,
//defines a START condition.
void iic_Start()
{
SDA=1;
SCL=1;
NOP2;
SDA=0;
NOP2;
SCL=0;
NOP2;
}
//the data line LOW to HIGH, while the clock line is HIGH,
//defines the STOP condition
void iic_Stop()
{
SDA=0;
SCL=1;
NOP2;
SDA=1;
NOP2;
SCL=0;
NOP2;
}
//發送0，在SCL為高電平時使SDA信號為低
void iic_Send0()
{
SDA=0;
SCL=1;
NOP2;
SCL=0;
NOP2;
}
//發送1，在SCL為高電平時使SDA信號為高
void iic_Send1()
{
SDA=1;
SCL=1;
NOP2;
SCL=0;
NOP2;
}
//發送完一個字節后檢驗設備的應答信號
char iic_CheckAck(void)
{
SDA=1;
SCL=1;
NOP;
F0=SDA;
NOP;
SCL=0;
NOP2;
return F0;
}
//向IIC總線寫一個字節,返回應答
char iic_WriteByte(char n)
{
char i;
for(i=0;i<8;i++)
{
if((n<<i)&0x80)
iic_Send1();
else
iic_Send0();
}
return iic_CheckAck();
}
//向I2C總線寫n個字節,返回寫了多少字節
char iic_WriteBytes(char*buffer,char n)
{
char i;
for(i=0;i<n;i++)
{
iic_WriteByte(buffer[i]);
if(!iic_CheckAck())
{
iic_Stop();
return(i);
}
}
return n;
}
//從I2C總線讀一個字節
char iic_ReadByte(void)
{
char b=0,i;
for(i=0;i<8;i++)
{
SDA=1;//釋放總線
SCL=1;//接受數據
NOP6;
F0=SDA;
NOP8;
SCL=0;
if(F0==1)
{
b=b<<1;
b=b|0x01;
}
else
b=b<<1;
return b;
}
}
//從I2C總線讀n個字節
char iic_ReadBytes(char SlaveAdr,char n,char*buffer)
{
char i;
iic_WriteByte(SlaveAdr);//向總線發送接收器地址
if(!iic_CheckAck())//等待接收器應答信號
return 0;
for(i=0;i<n;i++)
{
buffer[i]=iic_ReadByte();
if(i!=n)
iic_Send0();//發送應答
else
iic_Send1();//發送非應答
}
return 1;
}
ds1307.h
#include "defType.h"
#include "iic.h"
#define HZ_1 0
#define HZ_4096 1
#define HZ_8192 2
#define HZ_32768 3
#define HOUR24 0
#define HOUR12 1
#define AM 0
#define PM 1
typedef struct
{ char sec;
char minute;
char hour;
} TIME;
typedef struct
{ char week;
char day;
char month;
char year;
} DATE;
//ASCII 碼 (十 進 制 )轉BCD 碼
uchar Dec2BCD (uchar dec)
{
uchar x, y;
x=dec/10;
y=dec%10;
y=(x<<4)|y;
return y;
}
//BCD 碼 轉 ASCII 碼(十進制)
uchar BCD2Dec(uchar bcd)
{
uchar x, y;
y=bcd/16;
x=bcd % 16;
y=y*10+x;
return y;
}
void Set1307Out(bool e, char hz)
{
iic_Start();
if(iic_WriteByte(0xd0) ) // 指明要寫數據到1307
{
if(iic_WriteByte(0x07) ) //指明要寫人的地址
{
uchar b= hz;
if(e) b |=0x10;
iic_WriteByte(b);
}
}
iic_Stop();
}
//if set to 12 hours must set AM or PM,els no matter
void Set1307Time(TIME t,bool bHour12, bool bPM)
{
iic_Start();
if(iic_WriteByte(0xd0) ) // 指明要寫數據到1307
{
if(iic_WriteByte(0) ) //指明要寫人的地址
{
t.sec=Dec2BCD(t.sec)& 0x7f; //確保1307 run
t.minute= Dec2BCD(t.minute);
t.hour= Dec2BCD(t.hour)& 0x1f;
if(bHour12)
t.hour|= 0x40;
if(bPM)
t.hour|= 0x20;
iic_WriteBytes( (char*)&t, 3); //寫入time
}
}
iic_Stop();
}
void Set1307Date(DATE d)
{
iic_Start();
if(iic_WriteByte(0xd0) ) // 指明要寫數據到1307
{
if(iic_WriteByte(0x03) ) //指明要寫人的地址
{
d.week=Dec2BCD(d.week)& 0x07;
d.day= Dec2BCD(d.day) & 0x3f;
d.month= Dec2BCD(d.month)& 0x1f;
d.year= Dec2BCD(d.year);
iic_WriteBytes( (char*)&d, 4); //寫入time
}
}
iic_Stop();
}
void Read1307Time(TIME* t)
{
iic_Start();
iic_ReadBytes(0, 3,(char*)t);
t->sec&= 0x7f;
t->sec= BCD2Dec(t->sec);
t->minute&= 0x7f;
t->minute= BCD2Dec(t->minute);
t->hour&= 0x1f;
t->hour= BCD2Dec(t->hour);
iic_Stop();
}
void Read1307Date(DATE* t)
{
iic_Start();
iic_ReadBytes(0x03, 4,(char*)t);
t->week= BCD2Dec(t->week);
t->day= BCD2Dec(t->day);
t->month= BCD2Dec(t->month);
t->year = BCD2Dec(t->year);
iic_Stop();
}
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