Analog Comparator?

[phatpaul]

Is there an analog comparator function on this chip?
If not is there a hack to get similar function?

• I have an input signal 0~30V (divided to 0~2.7V) that I need to compare with a threshold ~5V (divided 0.45V).
  I need to detect both rising and falling edge. Latency < 10us.
  Hysteresis of about 50mV would be nice.
  Adjustable threshold would be nice.
  A single input pin would be nice because I have no extra IO left on this chip (vs output a DAC signal on a pin to an external comparator to another digital input pin)

[grstephany]

According to the ESP32 datasheet, the RTC Controller's ADC can sample at 200ksps and the DIG Controller's ADC can sample at 2 Msps.
With a max latency of 10 microseconds, you won't have a lot of margin to work with, but maybe.