1) using the internal RTC with some other commandline programming method, not Arduino
2) using an external RTC with libraries.
So, my question is, are there functions I can call within the Arduino IDE to set and access the ESP8266 internal RTC? Is it possible?
If yes, would it work on something simple like the ESP-01, or would I need to solder special connections using a different PCB, or something else? I would like to be able to rely almost entirely on the ESP chip for my project.
I have not found clear answers to these questions with extensive Googling. Input is appreciated.