Hide VTX menu when feature is unavailable

Author: atomgomba

src/SCRIPTS/BF/features.lua

@@ -0,0 +1,5 @@
+local features = {
+    vtx = true,
+}
+
+return features

src/SCRIPTS/BF/ui.lua

@@ -82,6 +82,24 @@ local function confirm(page)
     collectgarbage()
 end
 
+local function filterAvailablePages(pageFiles)
+    local newPageFiles = pageFiles
+
+    local function skipPage(script)
+        local currentPageFiles = {}
+        for i = 1, #newPageFiles do
+            if newPageFiles[i].script ~= script then
+                currentPageFiles[#currentPageFiles + 1] = newPageFiles[i]
+            end
+        end
+        newPageFiles = currentPageFiles
+    end
+
+    if not features.vtx then skipPage("vtx.lua") end
+
+    return newPageFiles
+end
+
 local function createPopupMenu()
     popupMenuActive = 1
     popupMenu = {}
@@ -296,7 +314,7 @@ local function run_ui(event)
             return 0
         end
         init = nil
-        PageFiles = assert(loadScript("pages.lua"))()
+        PageFiles = filterAvailablePages(assert(loadScript("pages.lua"))())
         invalidatePages()
         uiState = prevUiState or uiStatus.mainMenu
         prevUiState = nil

src/SCRIPTS/BF/ui_init.lua

@@ -22,10 +22,15 @@ local function init()
         mcuIdReceived = getMCUId.f()
         if mcuIdReceived then
             getMCUId = nil
-            local f = loadScript("VTX_TABLES/"..mcuId..".lua")
-            if f and f() then
-                vtxTablesReceived = true
-                f = nil
+            local f = loadScript("VTX_TABLES/" .. mcuId .. ".lua")
+            if f then
+                local table = f()
+                if table then
+                    vtxTablesReceived = true
+                    features.vtx = 0 < table.frequenciesPerBand
+                    f = nil
+                    table = nil
+                end
             end
             collectgarbage()
             f = loadScript("BOARD_INFO/"..mcuId..".lua")

src/SCRIPTS/BF/vtx_tables.lua

@@ -29,10 +29,12 @@ local function processMspReply(cmd, payload, err)
             vtxTableAvailable = true
             vtxFrequencyTableReceived = true
             vtxPowerTableReceived = true
+            features.vtx = false
             return
         end
         vtxConfigReceived = true
         vtxTableAvailable = payload[12] ~= 0
+        features.vtx = vtxTableAvailable
         vtxTableConfig.bands = payload[13]
         vtxTableConfig.channels = payload[14]
         vtxTableConfig.powerLevels = payload[15]

src/SCRIPTS/TOOLS/bf.lua

@@ -12,6 +12,7 @@ if scriptsCompiled then
     radio = assert(loadScript("radios.lua"))().msp
     assert(loadScript(protocol.mspTransport))()
     assert(loadScript("MSP/common.lua"))()
+    features = assert(loadScript("features.lua"))()
     run = assert(loadScript("ui.lua"))()
 else
     run = assert(loadScript("COMPILE/compile.lua"))()