raise minimum EdgeTX to 2.11.6 / 2.12.1

Enforce the per-branch minimum at runtime in both LVGL and BW UIs and
update the manifest pre-install gate. Drop unreachable lvgl-nil
fallback code in ui/lvgl.lua.

Author: jurgelenas

README.md

@@ -123,5 +123,5 @@ The simulator supports multiple test scenarios, configurable via the `config.sce
 
 | Radio type | Firmware | ExpressLRS |
 |------------|----------|------------|
-| Black & white LCD | EdgeTX 2.12+ or 3.0+ | v3.0+ |
-| Color LCD | EdgeTX 2.12+ or 3.0+ | v3.0+ |
+| Black & white LCD | EdgeTX 2.11.6+, 2.12.1+, or 3.0+ | v3.0+ |
+| Color LCD | EdgeTX 2.11.6+, 2.12.1+, or 3.0+ | v3.0+ |

edgetx.yml

@@ -22,7 +22,7 @@ package:
     - telemetry
   license: GPL-3.0-only
   source_dir: src
-  min_edgetx_version: "2.12.0"
+  min_edgetx_version: "2.11.6"
 
 libraries:
   - name: ELRS

src/SCRIPTS/TOOLS/ExpressLRS/main.lua

@@ -5,7 +5,7 @@
 ---- #                                                                       #
 ---- # License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html               #
 ---- #                                                                       #
----- # Unified tool for BW and color LCD radios (EdgeTX 2.12+)               #
+---- # Unified tool for BW and color LCD radios (EdgeTX 2.11.6+/2.12.1+)     #
 ---- #########################################################################
 
 local VERSION = "r2"
@@ -145,9 +145,9 @@ local function run(event, touchState)
     return 2
   end
 
-  -- UI-specific pre-checks (LVGL: version/availability check; BW: not defined)
+  -- UI-specific pre-checks (version check on both LVGL and BW paths)
   if UI.preCheck then
-    local result = UI.preCheck()
+    local result = UI.preCheck(event)
     if result ~= nil then
       return result
     end

src/SCRIPTS/TOOLS/ExpressLRS/ui/lcd.lua

@@ -10,6 +10,23 @@ local Navigation = deps.Navigation
 local Protocol = deps.Protocol
 local VERSION = deps.VERSION
 
+local VERSION_CHECK_ENABLED = true
+local versionCheckResult = nil
+
+local function checkEdgeTxVersion()
+  local _ver, _radio, maj, minor, rev = getVersion()
+
+  if maj >= 3 then
+    return true
+  elseif maj == 2 and minor == 12 and rev >= 1 then
+    return true
+  elseif maj == 2 and minor == 11 and rev >= 6 then
+    return true
+  end
+
+  return false
+end
+
 -- ============================================================================
 -- UI state
 -- ============================================================================
@@ -64,6 +81,31 @@ function UI.init()
   UI.COL1 = 0
   UI.textYoffset = 3
   UI.textSize = 8
+
+  if VERSION_CHECK_ENABLED then
+    versionCheckResult = checkEdgeTxVersion()
+  end
+end
+
+-- ============================================================================
+-- Interface: preCheck (version gate)
+-- ============================================================================
+
+function UI.preCheck(event)
+  if versionCheckResult == false then
+    UI.drawAlert("EdgeTX Unsupported", {
+      "Requires EdgeTX:",
+      "- 2.11.6 or later",
+      "- 2.12.1 or later",
+      "- 3.0 or later",
+    })
+    if event == EVT_VIRTUAL_EXIT then
+      App.shouldExit = true
+      return 2
+    end
+    return 0
+  end
+  return nil
 end
 
 -- ============================================================================

src/SCRIPTS/TOOLS/ExpressLRS/ui/lvgl.lua

@@ -1,6 +1,6 @@
 ---- #########################################################################
 ---- # LVGL UI: Color LCD rendering, dialogs, command pages               #
----- # For color LCD radios with EdgeTX 2.12+ LVGL support                #
+---- # For color LCD radios with EdgeTX 2.12.1+ LVGL support              #
 ---- #########################################################################
 
 local deps = ...
@@ -334,11 +334,13 @@ end
 local versionCheckResult = nil
 
 local function checkEdgeTxVersion()
-  local ver, _radio, maj, minor, rev = getVersion()
+  local _ver, _radio, maj, minor, rev = getVersion()
 
   if maj >= 3 then
     return true
-  elseif maj == 2 and minor >= 12 then
+  elseif maj == 2 and minor == 12 and rev >= 1 then
+    return true
+  elseif maj == 2 and minor == 11 and rev >= 6 then
     return true
   end
 
@@ -365,7 +367,8 @@ local function showVersionRequired()
       flexPad = lvgl.PAD_SMALL,
       children = {
         { type = "label", text = "Requires EdgeTX:" },
-        { type = "label", text = "- 2.12 or later" },
+        { type = "label", text = "- 2.11.6 or later" },
+        { type = "label", text = "- 2.12.1 or later" },
         { type = "label", text = "- 3.0 or later" },
       },
     },
@@ -389,37 +392,21 @@ local function showVersionRequired()
   })
 end
 
-local function showLvglRequired()
-  lcd.clear()
-  lcd.drawText(5, 10, "LVGL support required", BOLD)
-  lcd.drawText(5, 20, "Color LCD radio with", 0)
-  lcd.drawText(5, 30, "EdgeTX 2.12+ or 3.0+", 0)
-  lcd.drawText(5, 40, "needed", 0)
-end
-
 -- ============================================================================
 -- Interface: init
 -- ============================================================================
 
 function UI.init()
-  if lvgl == nil then
-    return
-  end
   if VERSION_CHECK_ENABLED then
     versionCheckResult = checkEdgeTxVersion()
   end
 end
 
 -- ============================================================================
--- Interface: preCheck (LVGL-specific: version/availability)
+-- Interface: preCheck (version gate)
 -- ============================================================================
 
-function UI.preCheck()
-  if lvgl == nil then
-    showLvglRequired()
-    return 0
-  end
-
+function UI.preCheck(_event)
   if versionCheckResult == false then
     if not UI.uiBuilt then
       showVersionRequired()