pinMode(P3_3, INPUT); in the example Factory_Test_AB01, what is P3_3 on the line #76? I could not find it on the diagram: https://github.com/HelTecAutomation/ASR650x-Arduino/blob/master/PinoutDiagram/HTCC-AB01.pdf
Is it the pin 3.3 V? I could not find a pin P3_3 in the Google.