knxnet is a Python3 library to create and decode KNXnet/IP datagram for Tunnelling.
Then you can send/receive the frames to/from a KNXnet/IP gateway with UDP.
This library was developed to suit the needs of the project HES-SO/EMG4B. It is not complete and some commands/parameters are missing.
python setup.py install
- To create a frame you can use the factory:
BinaryFrame = create_frame(SERVICE_TYPE_DESCRIPTOR, *param)- To decode a frame:
KnxnetObject = decode_frame(frame)then you have access to all fields in the KNX frame
- The following SERVICE_TYPE_DESCRIPTOR are available, with the required parameters for frame creation:
* CONNECTION_REQUEST:
create_frame(ServiceTypeDescriptor.CONNECTION_REQUEST,
CONTROL_ENPOINT,
DATA_ENDPOINT)
- CONNECTION_RESPONSE:
create_frame(ServiceTypeDescriptor.CONNECTION_RESPONSE,
CHANNEL_ID,
STATUS,
DATA_ENDPOINT)
- CONNECTION_STATE_REQUEST
create_frame(ServiceTypeDescriptor.CONNECTION_STATE_REQUEST,
CHANNEL_ID,
CONTROL_ENPOINT)
- CONNECTION_STATE_RESPONSE
create_frame(ServiceTypeDescriptor.CONNECTION_STATE_RESPONSE,
CHANNEL_ID,
STATUS)
- DISCONNECT_REQUEST
create_frame(ServiceTypeDescriptor.DISCONNECT_REQUEST,
CHANNEL_ID,
CONTROL_ENPOINT)
- DISCONNECT_RESPONSE
create_frame(ServiceTypeDescriptor.DISCONNECT_RESPONSE,
CHANNEL_ID,
STATUS)
- TUNNELLING_REQUEST
create_frame(ServiceTypeDescriptor.TUNNELLING_REQUEST,
DEST_GROUP_ADDR,
CHANNEL_ID,
DATA,
DATA_SIZE)
- TUNNELLING_ACK
create_frame(ServiceTypeDescriptor.TUNNELLING_ACK,
CHANNEL_ID,
STATUS)-
Parameters type:
CONTROL_ENDPOINT is a Hpai object or a tuple with IP as string and port as int: through NAT, put everything to zero ('0.0.0.0', 0)
DATA_ENDPOINT is a Hpai object or a tuple with IP as string and port as int: through NAT, put everything to zero ('0.0.0.0', 0)
CHANNEL_ID is a byte
STATUS is a byte: 0 = all ok
DEST_GROUP_ADDR is the destination group address as string '16/5/2' or as GroupAdress object
DATA is a datapoint type (only boolean and 8 bit unsigned are currently supported)
DATA_SIZE in byte
Check Actuasim project to see an example
of use of the knxnet library. The main application work as a server. A sample client can be found in tests folder.
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