Namely, a countdown timer with six seven segment displays that shows the remaining months, days, and hours set by the user via push-buttons. The actual countdown would then be controlled by an RTC module (I read somewhere that the Arduino's internal timer is not accurate for extended time periods).
Create a Countdown Timer that counts down in seconds, minutes, hours and days to any date, with time zone support. It also counts up from a past date.
Explore our online timers and countdown tools. Create your own countdown or use our pre-made countdowns to popular events.
Stopwatch Timer Countdown to Any Date Easter Countdown Summer Countdown New Year Countdown Countdown for Your Site Calculators Date to Date Calculator (duration) Business Date to Date (exclude holidays) Date Calculator (add / subtract) Business Date (exclude holidays) Weekday Calculator Week Number Calculator Roman Numeral Converter Alternative ...
too many arguments to function 'hw_timer_t* timerBegin (uint32_t)' 528 | timer = timerBegin (0, 80, true); // Alarm value will be in in us it looks like you are attempting to build code using ESP32 core 3.x which was implemented for ESP32 core 2.x have a look at the ESP32 core V3.x Arduino-ESP32 Timer API also worth looking at is Migration from ESP32 core 2.x to 3.x
The best way to answer this is to have you grab your favorite search engine and look for 'WDT RDP32 xxx,' where WDT stands for Watchdog Timer and xxx is the specific unit you have.
I clear the timer, set it up in Input Capture Mode, set the pre-scaler to ClkIO/1024, and enable Overflow interrupts, as the event I'm timing can take up to 10 seconds, which means the timer may overflow twice. I maintain a software count, in a uint32_t that is increment by 65536 every time an overflow occurs.