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Add MEDIUM_TURBO modem preset (#10988)

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* Protobufs

* Wire up MEDIUM_TURBO modem preset

MEDIUM_TURBO (500 kHz, SF9, CR 4/5) already existed in the protobuf enum but
was never wired into firmware, so selecting it silently fell through to the
LONG_FAST default and rendered an "Invalid" display name.

Add its bw/sf/cr mapping (modemPresetToParams), display name (MediumTurbo/MedT),
PRESETS_STD membership (standard regions only — 500 kHz does not fit EU868's
250 kHz band, so it stays out of PRESETS_EU_868 and is rejected/clamped there),
and the MEDIUM SNR-grading bucket. Includes positive coverage in test_radio,
EU868-reject + US-accept coverage in test_admin_radio and test_mesh_beacon,
the STD preset count 9->10, an extended fuzz range, and the client-spec doc.

* Address review feedback on MEDIUM_TURBO tests

- test_mesh_beacon: assert has_mesh_beacon before checking the invalid preset was
  cleared, so the EU868-cleared test can't pass on a dropped message (matches the
  existing SHORT_TURBO test).
- test_fuzz_packets: draw modem presets from _ModemPreset_ARRAYSIZE instead of a
  hard-coded 17 so the fuzz range tracks future enum additions automatically.
This commit is contained in:
Ben Meadors
2026-07-11 08:24:35 -05:00
committed by GitHub
co-authored by GitHub
parent ca833d944c
commit c5355641d3
13 changed files with 129 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/lora_region_preset_compatibility_client_spec.md
+9 -9
View File
@@ -69,7 +69,7 @@ message LoRaRegionPresetMap {
### 2.3 Why grouped (and the size envelope clients should respect)
A `FromRadio` packet is capped at **512 bytes** (`MAX_TO_FROM_RADIO_SIZE`). Most regions
share one identical preset list (the "standard" 9-preset list), so the map is delivered
share one identical preset list (the "standard" 10-preset list), so the map is delivered
**grouped**: `groups` holds each _distinct_ preset list once, and `region_groups` maps every
known region to one of those groups by index. This keeps the encoded size additive
(`groups` + `region_groups`) rather than multiplicative, well under the cap.
@@ -246,14 +246,14 @@ For decoder unit tests. With the 2.8 region table, the firmware emits **6 groups
indices are assigned in region-table order (first region to use a profile creates its group),
so they are stable as listed here:
| group_index | default_preset | licensed_only | presets |
| ----------------------- | -------------- | ------------- | -------------------------------------------------------------------------------------------------------------- |
| 0 (standard) | `LONG_FAST` | false | LONG_FAST, LONG_SLOW, MEDIUM_SLOW, MEDIUM_FAST, SHORT_SLOW, SHORT_FAST, LONG_MODERATE, SHORT_TURBO, LONG_TURBO |
| 1 (EU 868) | `LONG_FAST` | false | LONG_FAST, LONG_SLOW, MEDIUM_SLOW, MEDIUM_FAST, SHORT_SLOW, SHORT_FAST, LONG_MODERATE |
| 2 (EU 866 SRD / "lite") | `LITE_FAST` | false | LITE_FAST, LITE_SLOW |
| 3 (EU 868 narrow) | `NARROW_SLOW` | false | NARROW_FAST, NARROW_SLOW |
| 4 (ham 20 kHz) | `TINY_FAST` | **true** | TINY_FAST, TINY_SLOW |
| 5 (ham 100 kHz) | `NARROW_SLOW` | **true** | NARROW_FAST, NARROW_SLOW |
| group_index | default_preset | licensed_only | presets |
| ----------------------- | -------------- | ------------- | ---------------------------------------------------------------------------------------------------------------------------- |
| 0 (standard) | `LONG_FAST` | false | LONG_FAST, LONG_SLOW, MEDIUM_SLOW, MEDIUM_FAST, SHORT_SLOW, SHORT_FAST, LONG_MODERATE, SHORT_TURBO, LONG_TURBO, MEDIUM_TURBO |
| 1 (EU 868) | `LONG_FAST` | false | LONG_FAST, LONG_SLOW, MEDIUM_SLOW, MEDIUM_FAST, SHORT_SLOW, SHORT_FAST, LONG_MODERATE |
| 2 (EU 866 SRD / "lite") | `LITE_FAST` | false | LITE_FAST, LITE_SLOW |
| 3 (EU 868 narrow) | `NARROW_SLOW` | false | NARROW_FAST, NARROW_SLOW |
| 4 (ham 20 kHz) | `TINY_FAST` | **true** | TINY_FAST, TINY_SLOW |
| 5 (ham 100 kHz) | `NARROW_SLOW` | **true** | NARROW_FAST, NARROW_SLOW |
`region_groups` (region → group_index):