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2293e1506f
Starting with nodeid 4 instead of nodeid 0 can reduce bitstuffing of the id field in common configurations. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
27 lines
876 B
Python
27 lines
876 B
Python
# Support for tracking canbus node ids
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#
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# Copyright (C) 2021 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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NODEID_FIRST = 4
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class PrinterCANBus:
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def __init__(self, config):
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self.printer = config.get_printer()
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self.ids = {}
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def add_uuid(self, config, canbus_uuid, canbus_iface):
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if canbus_uuid in self.ids:
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raise config.error("Duplicate canbus_uuid")
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new_id = len(self.ids) + NODEID_FIRST
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self.ids[canbus_uuid] = new_id
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return new_id
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def get_nodeid(self, canbus_uuid):
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if canbus_uuid not in self.ids:
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raise self.printer.config_error("Unknown canbus_uuid %s"
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% (canbus_uuid,))
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return self.ids[canbus_uuid]
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def load_config(config):
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return PrinterCANBus(config)
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