Clipsal C-Bus Guia do Utilizador descarregar pdf (Página 39)

cbus Documentation, Release 0.1-dev

class cbus.protocol.base_packet.SpecialPacket

Bases: cbus.protocol.base_packet.BasePacket

checksum = False

destination_address_type = None

dp = None

priority_class = None

rc = None

class cbus.protocol.base_packet.SpecialClientPacket

Bases: cbus.protocol.base_packet.SpecialPacket

Client -> PCI communications have some special packets, which we make subclasses of SpecialClientPacket to

make them entirely seperate from normal packets.

These have non-standard methods for serialisation.

class cbus.protocol.base_packet.SpecialServerPacket

Bases: cbus.protocol.base_packet.SpecialPacket

PCI -> Client has some special packets that we make subclasses of this, because they’re different to regular

packets.

These have non-standard serialisation methods.

dm_packet: Device Management Packet

class cbus.protocol.dm_packet.DeviceManagementPacket(checksum=True, priority_class=2,

parameter=None, value=None)

Bases: cbus.protocol.base_packet.BasePacket

classmethod decode_packet(data, checksum, ﬂags, destination_address_type, rc, dp, priority_class)

encode(source_addr=None)

parameter = None

value = None

packet Module

cbus.protocol.packet.decode_packet(data, checksum=True, strict=True, server_packet=True)

Decodes a packet from or send to the PCI.

Returns a tuple, the packet that was parsed and the remainder that was unparsed (in the case of some special

commands.

If no packet was able to be parsed, the ﬁrst element of the tuple will be None. However there may be some

circumstances where there is still a remainder to be parsed (cancel request).

pm_packet Module

class cbus.protocol.pm_packet.PointToMultipointPacket(checksum=True, prior-

ity_class=0, application=None,

status_request=False)

Bases: cbus.protocol.base_packet.BasePacket

8.1. cbus Package 35

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