Consolidate LoRa params / preset logic and fix display of preset values (#9413)

* Consolidate LoRa params / preset logic and fix display of preset values * Move preset coercion logic to RadioInterface * Fix some warnings * Fix warnings * STM32 fix * Add unit tests * Update src/mesh/RadioInterface.h Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
2026-01-25 18:02:26 -06:00
parent b627fa720b
commit 8894a0b711
9 changed files with 252 additions and 115 deletions
@@ -22,4 +22,99 @@ struct RegionInfo {
 extern const RegionInfo regions[];
 extern const RegionInfo *myRegion;

-extern void initRegion();
+extern void initRegion();
+
+static inline float bwCodeToKHz(uint16_t bwCode)
+{
+    if (bwCode == 31)
+        return 31.25f;
+    if (bwCode == 62)
+        return 62.5f;
+    if (bwCode == 200)
+        return 203.125f;
+    if (bwCode == 400)
+        return 406.25f;
+    if (bwCode == 800)
+        return 812.5f;
+    if (bwCode == 1600)
+        return 1625.0f;
+    return (float)bwCode;
+}
+
+static inline uint16_t bwKHzToCode(float bwKHz)
+{
+    if (bwKHz > 31.24f && bwKHz < 31.26f)
+        return 31;
+    if (bwKHz > 62.49f && bwKHz < 62.51f)
+        return 62;
+    if (bwKHz > 203.12f && bwKHz < 203.13f)
+        return 200;
+    if (bwKHz > 406.24f && bwKHz < 406.26f)
+        return 400;
+    if (bwKHz > 812.49f && bwKHz < 812.51f)
+        return 800;
+    if (bwKHz > 1624.99f && bwKHz < 1625.01f)
+        return 1600;
+    return (uint16_t)(bwKHz + 0.5f);
+}
+
+static inline void modemPresetToParams(meshtastic_Config_LoRaConfig_ModemPreset preset, bool wideLora, float &bwKHz, uint8_t &sf,
+                                       uint8_t &cr)
+{
+    switch (preset) {
+    case meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO:
+        bwKHz = wideLora ? 1625.0f : 500.0f;
+        cr = 5;
+        sf = 7;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_SHORT_FAST:
+        bwKHz = wideLora ? 812.5f : 250.0f;
+        cr = 5;
+        sf = 7;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_SHORT_SLOW:
+        bwKHz = wideLora ? 812.5f : 250.0f;
+        cr = 5;
+        sf = 8;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_MEDIUM_FAST:
+        bwKHz = wideLora ? 812.5f : 250.0f;
+        cr = 5;
+        sf = 9;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_MEDIUM_SLOW:
+        bwKHz = wideLora ? 812.5f : 250.0f;
+        cr = 5;
+        sf = 10;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_LONG_TURBO:
+        bwKHz = wideLora ? 1625.0f : 500.0f;
+        cr = 8;
+        sf = 11;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_LONG_MODERATE:
+        bwKHz = wideLora ? 406.25f : 125.0f;
+        cr = 8;
+        sf = 11;
+        break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_LONG_SLOW:
+        bwKHz = wideLora ? 406.25f : 125.0f;
+        cr = 8;
+        sf = 12;
+        break;
+    default: // LONG_FAST (or illegal)
+        bwKHz = wideLora ? 812.5f : 250.0f;
+        cr = 5;
+        sf = 11;
+        break;
+    }
+}
+
+static inline float modemPresetToBwKHz(meshtastic_Config_LoRaConfig_ModemPreset preset, bool wideLora)
+{
+    float bwKHz = 0;
+    uint8_t sf = 0;
+    uint8_t cr = 0;
+    modemPresetToParams(preset, wideLora, bwKHz, sf, cr);
+    return bwKHz;
+}