I2C bus in vhdl file

very nice .

I already wrote some custom peripheral and included in my system as vhdl files.

After that wrote driver device and use them in NIOS II IDE .

But in my case how i have to set the pin , as input , as output (not good )

or bidirectional if exist ?

For PIC mcu i wrote library , and was possible because i can change direction "on flight" using TRIS register .Setting 0 or 1 change the direction

but how to do in vhdl file ?

thanks for helps

ciao

walter