diff options
Diffstat (limited to 'klippy')
| -rw-r--r-- | klippy/extras/bus.py | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/klippy/extras/bus.py b/klippy/extras/bus.py index b8deb22b..8bd4bc9f 100644 --- a/klippy/extras/bus.py +++ b/klippy/extras/bus.py @@ -25,9 +25,10 @@ def resolve_bus_name(mcu, param, bus): raise ppins.error("Unknown %s '%s'" % (param, bus)) # Check for reserved bus pins constants = mcu.get_constants() - reserve_pins = constants.get('BUS_PINS_%s' % (bus,), '') - for pin in reserve_pins.split(','): - ppins.reserve_pin(mcu_name, pin, bus) + reserve_pins = constants.get('BUS_PINS_%s' % (bus,), None) + if reserve_pins is not None: + for pin in reserve_pins.split(','): + ppins.reserve_pin(mcu_name, pin, bus) return bus |