marlin/buildroot/bin/pins_set

#!/usr/bin/env bash

IFS='/' read -r -a PINPATH <<< "$1"
DIR=${PINPATH[0]}
NAM=${PINPATH[1]}
PIN=$2
VAL=$3

SED=$(which gsed || which sed)
eval "${SED} -i '/^[[:blank:]]*\(\/\/\)*[[:blank:]]*\(#define \+${PIN}\b\).*$/{s//\2 ${VAL}/;h};\${x;/./{x;q0};x;q9}' Marlin/src/pins/$DIR/pins_${NAM}.h" ||
(echo "ERROR: pins_set Can't find ${PIN}" >&2 && exit 9)