Comments (4)
It definitely does not contain all protocols related to Tier 1/2/3, its just protocol tool, use it as you like.
Describe your use-case in detail, then i might have better answer for you
from ok-dmrlib.
@smarek Thank you for your prompt response, I really appreciate your time.
I am looking to implement DMR Tier 1 from scratch using one of my processor [ARM + DSP], I want to establish 1:1 communication between DMR Handhelds. Can you guide me how I can I use dmrlib for the same?
Thanks!
from ok-dmrlib.
@alwinhb awesome, good luck then, i don't think this library is usable for your goal. Targeting embedded devices requires imho low-latency implementation, which Python cannot provide.
Per definition (TS 102 361-1 - V2.5.1)
Tier I: DMR equipment having an integral antenna and working in direct mode (communication without
infrastructure) under a general authorization with no individual rights operation.
I think I have most of the PDUs implemented, so you can use ok-dmrlib as reference (including test-cases and test-data) when re-implementing into low-latency stack
AI Layer 1 (section 4.1.1) is up-to-you
AI Layer 2 (4.2.2) I don't have channel management and CCL signaling, all the other PDU's, FEC, CRC, (de)interleaving routines we should have
AI Layer 3 (4.2.3) I don't have most of the features in code now, nor the control plane implementation
And for TDMA, I actually have drafted solution with dsd-fme for decoding raw I/Q data into DMR bursts and inspecting them (and the transmissions chains) through ok-dmrlib, timing will be up to you, but currently I have Generic burst and CACH, i don't have RC nor detection/handling of full TDMA frames
It's wide topic, but these are my first thoughts, let me know what you think, cheers!
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@smarek Thanks, Any more open source code references would be of great help
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