digital clock using rtc

[Mithilesh Kumar]

i am doing a project on digital clock using rtc, but i dont have knowledge in C.

i need your help.
….

..

 

{

char i;

static bit ack_bit;

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

{

if(Data & 0x80) SDA=1;

else SDA=0;

SCL=1;

Data<<=1;

SCL=0;

}

SDA=1,SCL=1;

ack_bit=SDA;

SCL=0;

return ack_bit;

}

unsigned char I2CRead(char ack)           //receive data from ds1307

{

unsigned char i, Data=0;

SDA=1;

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

{

Data<<=1;

do{SCL=1;}

while(SCL==0);

if(SDA) Data|=1;

SCL=0;

}

if(ack)SDA=0;

else SDA=1;

SCL=1;

SCL=0;

SDA=1;

return Data;

}

 

 

 

what does it mean..

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