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diff --git a/stacks/crdop/docs/PROTOCOL.md b/stacks/crdop/docs/PROTOCOL.md new file mode 100644 index 0000000..2d28bd4 --- /dev/null +++ b/stacks/crdop/docs/PROTOCOL.md @@ -0,0 +1,36 @@ +# Protocol + +Normative wire: **[HOST-PROTOCOL-SPEC.md](HOST-PROTOCOL-SPEC.md)** (frozen v1.0.0). + +CRDOP (**MAX25-SoftModem**) uses the **native MAX25 M25/KISS host protocol** on TCP :8515 (control) / :8516 (data). + +## Stack (default) + +``` +[Radio] ↔ [audio/ALSA] ↔ audio-dummyd / native modem ↔ TCP :8515 ctrl, :8516 data ↔ max25d +``` + +## Over-the-air + +AX.25-compatible AFSK tones (1200 baud primary, up to 19200 baud design range). See [SOFTMODEM.md](SOFTMODEM.md). + +## Host TCP (native M25) + +| Port | Role | +|------|------| +| 8515 | Control (line-oriented ASCII, `\n` terminated) | +| 8516 | Data (AX.25 UI body without HDLC/FCS) | + +Common commands: `INITIALIZE` · `PROTOCOLMODE KISS` · `MYCALL` · `LISTEN` · `STATUS` · `PING` + +Implementation reference: `stacks/crdop/lib/m25_host_protocol.py` + +## CRDOP launch presets + +| Profile | Role | +|---------|------| +| `cb` | Default — CB / 500MAX class | +| `dual` | CB ↔ amateur turnaround | +| `amateur` | Amateur bandwidth class | + +Runtime overrides via host TCP or `crdop.ini` always apply. |