knxlib & physical address based messages

[Fred]

Hello,

Is the knxlib full feature set documented anywhere? I find threads and information here and there but nothing centralized. Maybe an idea for the documentation pinned link above


I am looking to support physical address messages level, f.e. to write to a device memory, that sort of things.

Thanks for any info or pointer!

[admin]

You can run log(buslib) to get a list of functions in this library. These functions are not fully documented because they are mostly used internally.
Can you describe your use case for accessing KNX device memory directly?

[Fred]

Generically, I think having the ability from LogicMachine to send a telegram addressed to a physical address is valuable. It could be a basic implementation, i.e. send and receive of raw data, without support for all the KNX features - building/decoding telegrams should be left to user.
Tapko for example provides a module (SIM-KNX) that offers this: a KNX stack for group addresses and objects, along with the capability to send/receive raw telegrams.

My use case is to be able to deploy a LM and an array of identical devices on a simple single KNX line without requiring ETS. If every device has a predefined unique physical address, then I do not need the group address layer (which in this case just replicates the physical address layer: every device has its own unique set of group addresses). For example, 25 displays connected to a LM displaying messages sent by the LM.
Granted, this is a slightly heretical use of KNX, but having both options as proposed above provides flexibility in using LogicMachine for "custom" use cases without formally embracing them