This is a library-ish thing for the DS3231 RTC and PSoC, with code based on and loosely ported from AdaFruit's RTClib.
It's tested on the PSoC 5LP CY8CKIT-059, but should work with any PSoC 5LP and I imagine other PSoCs have similar APIs for the I2C components.
The most important part is to add DS3231.c and DS3231.h to your project. Then, this library relies on a I2C component called I2CRTC that should be connected to a DS3231 (might work with DS3232 too?).
This comes with a DateTime struct that I adapted from AdaFruit's DateTime class. This comes with a few functions.