I am using a Seeeduino XIAO in a fire detection system, where I need to read a voltage related to a thermistor and therefore I am using analogRead() in the Arduino environment. I have a few questions.
- Are any of the pins on the XIASO available for analogReference()?
- Is there an internal 1.1 v. reference, and how do I specify it?
- Is the default reference 3.3 volts?
I find that in the Arduino IDE, the constants EXTERNAL, INTERNAL, and DEFAULT aren’t recognized. Pleas advise.