I have a working Primo build with dual endstop. Everything is working perfectly with Marlin firmware on my MKS Gen L v2.0 (with TMC2209 drivers).
I’d like to give GRBL a try. I did manage to flash the firmware to my board but I only have one stepper per axis moving. Z is moving Up/down. I did try a couple of forks mentionned here and there on this forum but always the same issue.
My guess is that I don’t have the correct pins mapped out for those two steppers but I have no idea where to start looking exactly.
Any help appreciated!