From c896a1350c208da233c3043746a3dcfc159a6aa0 Mon Sep 17 00:00:00 2001
From: tekomula <tekomula@gmail.com>
Date: Thu, 4 Dec 2025 07:38:35 +0200
Subject: [PATCH] Added EdgeFastLow-settings for modem

---
 src/DisplayFormatters.cpp                 |  5 ++++-
 src/graphics/draw/MenuHandler.cpp         |  7 +++++--
 src/mesh/RadioInterface.cpp               |  5 +++++
 src/mesh/generated/meshtastic/config.pb.h | 12 +++++++++---
 4 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/DisplayFormatters.cpp b/src/DisplayFormatters.cpp
index 246cf00223f..100a93e7163 100644
--- a/src/DisplayFormatters.cpp
+++ b/src/DisplayFormatters.cpp
@@ -34,6 +34,9 @@ const char *DisplayFormatters::getModemPresetDisplayName(meshtastic_Config_LoRaC
     case meshtastic_Config_LoRaConfig_ModemPreset_LONG_MODERATE:
         return useShortName ? "LongM" : "LongMod";
         break;
+    case meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW:
+        return useShortName ? "EFL" : "EdgeFastLow";
+        break;
     default:
         return useShortName ? "Custom" : "Invalid";
         break;
@@ -80,4 +83,4 @@ const char *DisplayFormatters::getDeviceRole(meshtastic_Config_DeviceConfig_Role
         return "Unknown";
         break;
     }
-}
\ No newline at end of file
+}
diff --git a/src/graphics/draw/MenuHandler.cpp b/src/graphics/draw/MenuHandler.cpp
index bfe3656ce66..71602925609 100644
--- a/src/graphics/draw/MenuHandler.cpp
+++ b/src/graphics/draw/MenuHandler.cpp
@@ -197,7 +197,7 @@ void menuHandler::DeviceRolePicker()
 void menuHandler::RadioPresetPicker()
 {
     static const char *optionsArray[] = {"Back",       "LongSlow",  "LongModerate", "LongFast",  "MediumSlow",
-                                         "MediumFast", "ShortSlow", "ShortFast",    "ShortTurbo"};
+                                         "MediumFast", "ShortSlow", "ShortFast",    "ShortTurbo", "EdgeFastLow"};
     enum optionsNumbers {
         Back = 0,
         radiopreset_LongSlow = 1,
@@ -207,7 +207,8 @@ void menuHandler::RadioPresetPicker()
         radiopreset_MediumFast = 5,
         radiopreset_ShortSlow = 6,
         radiopreset_ShortFast = 7,
-        radiopreset_ShortTurbo = 8
+        radiopreset_ShortTurbo = 8,
+        radiopreset_EdgeFastLow = 9
     };
     BannerOverlayOptions bannerOptions;
     bannerOptions.message = "Radio Preset";
@@ -234,6 +235,8 @@ void menuHandler::RadioPresetPicker()
             config.lora.modem_preset = meshtastic_Config_LoRaConfig_ModemPreset_SHORT_FAST;
         } else if (selected == radiopreset_ShortTurbo) {
             config.lora.modem_preset = meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO;
+        } else if (selected == radiopreset_EdgeFastLow) {
+            config.lora.modem_preset = meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW;
         }
         service->reloadConfig(SEGMENT_CONFIG);
         rebootAtMsec = (millis() + DEFAULT_REBOOT_SECONDS * 1000);
diff --git a/src/mesh/RadioInterface.cpp b/src/mesh/RadioInterface.cpp
index 3c0da44944d..cc07826d3a9 100644
--- a/src/mesh/RadioInterface.cpp
+++ b/src/mesh/RadioInterface.cpp
@@ -518,6 +518,11 @@ void RadioInterface::applyModemConfig()
                 cr = 8;
                 sf = 12;
                 break;
+            case meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW:
+                bw = 62.5;
+                cr = 8;
+                sf = 8;
+                break;
             }
         } else {
             sf = loraConfig.spread_factor;
diff --git a/src/mesh/generated/meshtastic/config.pb.h b/src/mesh/generated/meshtastic/config.pb.h
index 327568316c7..9e456ea8eaf 100644
--- a/src/mesh/generated/meshtastic/config.pb.h
+++ b/src/mesh/generated/meshtastic/config.pb.h
@@ -311,7 +311,13 @@ typedef enum _meshtastic_Config_LoRaConfig_ModemPreset {
     /* Short Range - Turbo
  This is the fastest preset and the only one with 500kHz bandwidth.
  It is not legal to use in all regions due to this wider bandwidth. */
-    meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO = 8
+    meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO = 8,
+    /*
+     * Edge Fast Low
+     * Designed to work in very harsh conditions when a lot of radio interference is present
+     * Useful when the used LoRa frequency band is very congested and full of other traffic
+     */
+    meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW = 9
 } meshtastic_Config_LoRaConfig_ModemPreset;
 
 typedef enum _meshtastic_Config_BluetoothConfig_PairingMode {
@@ -689,8 +695,8 @@ extern "C" {
 #define _meshtastic_Config_LoRaConfig_RegionCode_ARRAYSIZE ((meshtastic_Config_LoRaConfig_RegionCode)(meshtastic_Config_LoRaConfig_RegionCode_BR_902+1))
 
 #define _meshtastic_Config_LoRaConfig_ModemPreset_MIN meshtastic_Config_LoRaConfig_ModemPreset_LONG_FAST
-#define _meshtastic_Config_LoRaConfig_ModemPreset_MAX meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO
-#define _meshtastic_Config_LoRaConfig_ModemPreset_ARRAYSIZE ((meshtastic_Config_LoRaConfig_ModemPreset)(meshtastic_Config_LoRaConfig_ModemPreset_SHORT_TURBO+1))
+#define _meshtastic_Config_LoRaConfig_ModemPreset_MAX meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW
+#define _meshtastic_Config_LoRaConfig_ModemPreset_ARRAYSIZE ((meshtastic_Config_LoRaConfig_ModemPreset)(meshtastic_Config_LoRaConfig_ModemPreset_EDGE_FAST_LOW+1))
 
 #define _meshtastic_Config_BluetoothConfig_PairingMode_MIN meshtastic_Config_BluetoothConfig_PairingMode_RANDOM_PIN
 #define _meshtastic_Config_BluetoothConfig_PairingMode_MAX meshtastic_Config_BluetoothConfig_PairingMode_NO_PIN