How to use the microphone on RedBoard

I can’t find any information on how to get readings from the built-in microphone. Is there an analog pin I can use, or a serial interface?

Which Redboard?

Sorry, I thought it was just one Artemis Redboard. It’s listed with the code DEV-15444 on sparkfun.com.

After some digging I found a working example here:

https://github.com/sparkfun/Arduino_Apo … Output.ino