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bus: Don't reserve any pins if BUS_PINS_x is not defined 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-04-07 20:43:23 -04:00
parent 38f3d65ac5
commit d7e1061c63
1 changed files with 4 additions and 3 deletions
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7
klippy/extras/bus.py
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@ -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