def resolve_bus_name(mcu, param, bus):
# Find enumerations for the given bus
enumerations = mcu.get_enumerations()
enums = enumerations.get(param, enumerations.get('bus'))
if enums is None:
if bus is None:
return 0
return bus
# Verify bus is a valid enumeration
ppins = mcu.get_printer().lookup_object("pins")
mcu_name = mcu.get_name()
if bus is None:
rev_enums = {v: k for k, v in enums.items()}
if 0 not in rev_enums:
raise ppins.error("Must specify %s on mcu '%s'" %
(param, mcu_name))
bus = rev_enums[0]
if bus not in enums:
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, ), None)
pin_resolver = ppins.get_pin_resolver(mcu_name)
if reserve_pins is not None:
for pin in reserve_pins.split(','):
pin_resolver.reserve_pin(pin, bus)
return bus
def __init__(self, mcu, pin_desc, cmd_queue=None, value=0):
self.mcu = mcu
self.oid = mcu.create_oid()
ppins = mcu.get_printer().lookup_object('pins')
pin_params = ppins.lookup_pin(pin_desc)
if pin_params['chip'] is not mcu:
raise ppins.error("Pin %s must be on mcu %s" %
(pin_desc, mcu.get_name()))
mcu.add_config_cmd("config_digital_out oid=%d pin=%s value=%d"
" default_value=%d max_duration=%d" %
(self.oid, pin_params['pin'], value, value, 0))
mcu.register_config_callback(self.build_config)
if cmd_queue is None:
cmd_queue = mcu.alloc_command_queue()
self.cmd_queue = cmd_queue
self.update_pin_cmd = None