I am looking pseudo code to check ACK or NAK and generate ACK or NAK in i2c communication



as given in diagram The master issues Start, then sends the slave address and slave sends a single ACK or NAKa after receiving 8 bits

void main (void)

{
    //How to write a pseudo code to check ACK or NAK and to  generate ACK or NAK

}

 

Well, take a close look at what the SCL and SDA voltage levels are in the drawing you provide. That will give you a pretty good idea of when to raise or lower the value of a signal pin if you're trying to do i2c all by yourself.