A real-time clock circuit is provided for use in an application such that a developer can test applications requiring this support. The real-time clock provides both time and date.
This ST-M41T81 device is accessible from the SED-M0x
module using the I2C interface. Battery backup is provided by the CR2032 button cell on the board, which allows the time
and date to be maintained even when the external power supply and both banks of batteries are removed.
The OUT signal from the device is available on DIO16 to the SED-M0x
module.
Sedona provides component support for the real-time clock in the kit “datetimeJenRtc”, using a “DateTimeServiceJenRtc” component with special “Date Time Service View”. Other Sedona components that rely on real-time values, such as schedules, can be used in a Sedona app.
A factory-new Sedona Dev Board will have an unititialized real-time clock. Set the current date and time using the “demo app” that ships with the dev board, via the app’s service/time (named) component. See Initialize the real-time clock.
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