They can do that because of the size of an unsigned long, but can't with an unsigned int because the number isn't as large. This may not be the case of the ESP8266 or ESP32 specifically, however the ...

I'm trying to compile the IBusBM library for the Arduino Due, but I'm getting the following error: WARNING: library IBusBM claims to run on avr, esp32, stm32, mbed architecture(s) and may be incomp ...