I am using a Arduino Due with discrete stepper drivers, using the .bin g2+gshield, everything works correctly but I cannot get the endstops to work.
Testing Y axis on pin 16 I can see that the endstops triggers on GND, so I installed a pullup resistor (plus a capacitor as there was a lot of noise) and a NO switch. The triggering does happen but on the rising edge, that is only when the switch is released.
I am not sure how get the endstops working, maybe the gshield expects or has some digital circuitry for the endstops?