I2C Verilog solution

Hello! I'm a newbie in Verilog Description Language!

I need to write Program that configure adv7179 Video encoder via I2C protocol!

I've found some sample of using i2c and corrected it to my case.. Simulated it in Quartus II software and it's ok.. But in hardware it doesn't work :( When i see on FPGA's pin SDA and SCL are GDN-level and nothing happen..

Have anyone help me please :) Is any ideas why so?

Source code and Simulated waveforms is Attached!