#include
#include
#include
#define lcdwritecmd XBYTE[0xFC00]
#define ledwritedat XBYTE[0xFE00]
sbit SCL=P1^0 ;
sbit SDA=P1^1 ;
char tab[2];
unsigned char year,mon,day,hour,min,sec,state,hudsec;
//============================延時(shí)函數(shù)====================================
void delay(unsigned char n)
{
unsigned char i,j;
for(i=0;i for(j=0;j<5;j++);
}
void delayshort()
{
_nop_();
_nop_();
_nop_();
_nop_();
}
//=========================================================================
//============================1602寫(xiě)指令函數(shù)===============================
void writecmd(unsigned char a)
{
delay(100);
lcdwritecmd=a;
}
//=========================================================================
//============================1602寫(xiě)數(shù)據(jù)函數(shù)===============================
void writedata(char lcddata)
{
delay(10);
ledwritedat=lcddata;
}
//=========================================================================
//===========================1602顯示字符串據(jù)函數(shù)==========================
void displaystring(unsigned char add,unsigned char n,char tab[])
{
unsigned char i;
for(i=0;i {
writecmd(add+i);
writedata(tab[i]);
delay(100);
}
}
//=========================================================================
//===========================I2C開(kāi)始信號(hào)函數(shù)===============================
void start()
{

}
//=========================================================================
//===========================I2C結(jié)束信號(hào)函數(shù)===============================
void stop()
{

}
//=========================================================================
//===========================I2C從機(jī)等待應(yīng)答信號(hào)函數(shù)=======================
void waitack()
{

}
//=========================================================================
//===========================I2C主機(jī)應(yīng)答信號(hào)函數(shù)===========================
void mack()
{

}
//=========================================================================
//===========================I2C寫(xiě)一個(gè)字節(jié)函數(shù)=============================
void write_byte(unsigned char a)
{

}
//=========================================================================
//===========================I2C讀一個(gè)字節(jié)函數(shù)=============================
unsigned char read_byte()
{

}
//=========================================================================
//===========================PCF8583寫(xiě)函數(shù)=================================
//參數(shù)adr：寄存器地址
//參數(shù)dat：寫(xiě)入得數(shù)據(jù)
void PCF8583_write(unsigned char adr,unsigned char dat)
{
start();
write_byte(0xa0);
waitack();
write_byte(adr);
waitack();
write_byte(dat);
waitack();
stop();
}
//=========================================================================
//===========================PCF8583讀函數(shù)=================================
//連續(xù)讀區(qū)以00起始地址的7個(gè)單元的數(shù)據(jù)
void PCF8583_read()
{
start();
write_byte(0xA0);
waitack();
write_byte(0x00);
waitack();
stop();
start();
write_byte(0xA1);
waitack();
state = read_byte(); // 讀狀態(tài)寄存器的值
mack();
hudsec = read_byte(); // 讀百分之一秒數(shù)值寄存器的值
mack();
sec = read_byte(); // 讀秒數(shù)值寄存器的值
mack();
min = read_byte(); // 讀分?jǐn)?shù)值寄存器的值
mack();
hour = read_byte(); // 讀時(shí)數(shù)值寄存器的值
mack();
day = read_byte(); // 讀天數(shù)值寄存器的值
mack();
mon = read_byte(); // 讀時(shí)月值寄存器的值
mack();
stop();

}