Accessing embedded RTC.

Hi,
How to access the embedded RTC on the Arduino Expansion Shield for Raspberry Pi model B on Arduino IDE.
Here is the link to the product: https://www.dfrobot.com/product-1148.html.
The documentation only gives example in Python, but I need to access to the RTC on Arduino IDE.
Thanks.
How to access the embedded RTC on the Arduino Expansion Shield for Raspberry Pi model B on Arduino IDE.
Here is the link to the product: https://www.dfrobot.com/product-1148.html.
The documentation only gives example in Python, but I need to access to the RTC on Arduino IDE.
Thanks.