Arduino Library for RV-3028-C7

Supports Micro Crystal RV-3028-C7 extreme low power RTC module.

Usage

Search the library using the Library Manager of Arduino IDE, or download it directly via GitHub.

Connect an RV-3028-C7 device to your Arduino board according to the datasheet. There are three examples that come with the library:

• SetDateTime: Configures date and time to the RTC module via the serial console, and then prints the current date and time in ISO 8601 format every second.
• HourlyAlarmInterrupt: Sets an hourly alarm at a specific minute, and triggers an interrupt.
• PeriodicCountdownTimer: Sets a repeating countdown timer that triggers an interrupt.
• ProgrammableClockOutput: Outputs a square wave to trigger interrupts at a programmable clock frequency.

You can find more API functions in src/RV3028C7.h, which are pretty much self-explanatory if you have read the datasheet.

Compatibility

This library has been tested on SAMD21 only. However, it should also be compatible with any architecture that provides Wire.h I²C support.

License

MIT