Read press button on PT6961 or SN1692

Hi all! I used lib OasisLED for display characters. It's work. How can I read the pressed SPI buttons on the PT6961 or SN1692? Thank's

Please provide links to the devices that you are using

Lib GitHub - buzzdavidson/OasisLED: Arduino library for PT6961-based Oasis TOFD-5465GGH-B 4 digit 7-segment displays - for displaying characters.

This pcb http://forum.amperka.ru/attachments/20150215_230939-jpg.2356/

Datasheet PT6961 datasheet - LED Driver IC | PT6961.pdf by Princeton Technology Corp | PT6961 documentation view on KAZUS.RU

How can I count pressing the buttons?