We're using Marlin fimware on a BigTreeTech Octopus controller, we want G-code execution to pause when an input pin is low, and resume/continue when the pin is 1. The input pin is PG15 on the STM32 processor.
We've used:
M42 PG15 T0
to configure the pin as input, then:
M226 PG15 S0
to try to pause if PG15 is low, however G-code execution halts regardless of pin level. The Marlin documentation is not very clear on how to use M226.
