I am working from the example sketch in that installed with the ESP32 Dev Module into the Arduino IDE. It includes
"time.h". I have a number of questions about how to use the clock that is set up with
configTime using NTP. I am trying to find the documentation, but I'm having difficulty identifying exactly who is providing me the
"time.h" header file, and of course, there are a lot of different
time.h header files out there so googling is difficult.
Where can I find the documentation for this particular header?
- Can the time be set manually without a WiFi connection?
- Can the timezone be changed without connecting to NTP again?
- Can I get the time as a Unix Time Stamp? (Yes)
- Can I arrange for a function callback at a certain time? (I'm aware I can use the timer library for this but I'm hoping for something like a callback at 4:20p every Saturday)