Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

p89v51rd2 i2c slave not give ack

Status
Not open for further replies.

cheenu02

Junior Member level 3
Joined
Jun 16, 2011
Messages
31
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
1,500
hi,
i am new to i2c.I want to send data to EEPROM (m24c08).I am not getting correct output.My output is like this S A0 N 0F N 31 N P.I didn't get ack signal from slave.help me

MY CODE IS

void main()
{
start();
write_data(0xa0);
write_data(0x0f);
write_data(0x31);
stop();
}
void write_data(unsigned char d)
{

unsigned char i;
scl=0;
for(i=0;i<8;i++)
{
scl=0;
if(d & 0x80)
sda=1;
else
sda=0;

scl=1;
d=d<<1;

}
scl=0;
sda=1;

scl=1;

}
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top