Exporting data to csv file

My purpose is saving the number of bits, errors, and BER through transceiving random signal (PRBS7).

First, I found good tool to show them in quartus II, transceiver toolkit.

Then I used an example file provied by Altera to download in my device (Stratix IV GX).

And I succeed to see the data (numbe of bits, errors, and BER) in GUI of transceiver toolkit.

I also found variable "Bits_counter", "Error_counter" in the example file <altera_avalon_data_pattern_checker.v>.

I want to save the data value per 30sec in csv file.

Please tell me how can I save these data in csv file.

Thanks,

Insun Shin