esp32 - IR intervalometer for Sony a7

I see a reference to both Cathode and Anode used in code snippet. Is the IR diode connected across both these pins? Backwards? Lacking pullup? Need a current driver like a 2n2222?

What is the pin mode set to? I don't see those lines of code?

http://www.espruino.com/Reference#l__glo­bal_getPinMode

or use dump() on the command line.

Potential conflict L41 and L47 :: Using both analog and digital on the same pin.