Hi Vitenka,

to change 2 pins of the same port use ANL, ORL or XRL instructions.

But the I2C protocol forbid it. You must always change SDA and SCL separate. Otherwise there is no way to distinguish, whats data and whats start or stop.

To see a working I2C implementation you can look at:

http://www.specs.de/~danni/appl/hard/i2c/index.htm

It include also resetting the I2C bus.


Peter