Please see the following code which is taken from an example provided by Keil for bit banged I2C :

void i2c_stop (void)
{
unsigned char input_var;

SCLK = LOW; // Set clock line low
SDATA = LOW; // Set data line low
SCLK = HIGH; // Set clock line high
SDATA = HIGH; // Set data line high (STOP SIGNAL)
input_var = SDATA; // Put port pin into HiZ
}

What exactly happens in the last statement ? Or is it a typo where RHS and LHS are swapped ??

Thanks

Raghu