-
esphome
ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
ESPHome is a separate firmware. If your sketch contains something that is not supported natively by esphome, have a look at the Custom Components section. They'll help to get custom C++ code into the esphome project, but in the end the firmware will be configured by the YAML file.
I just google the part and ESPHome. For DS3231, I find this https://github.com/esphome/feature-requests/issues/515