Hide GPS settings if unavailable

src/SCRIPTS/BF/CONFIRM/vtx_tables.lua

@@ -1,9 +1,6 @@
 local template = assert(loadScript(radio.template))()
 local margin = template.margin
-local indent = template.indent
 local lineSpacing = template.lineSpacing
-local tableSpacing = template.tableSpacing
-local sp = template.listSpacing.field
 local yMinLim = radio.yMinLimit
 local x = margin
 local y = yMinLim - lineSpacing

src/SCRIPTS/BF/PAGES/INIT/vtx.lua

@@ -0,0 +1,11 @@
+local function precondition()
+    local hasVtxTable = loadScript("VTX_TABLES/"..mcuId..".lua")
+    collectgarbage()
+    if hasVtxTable then
+        return nil
+    else
+        return "CONFIRM/vtx_tables.lua"
+    end
+end
+
+return precondition()

src/SCRIPTS/BF/PAGES/vtx.lua

@@ -1,8 +1,6 @@
 local template = assert(loadScript(radio.template))()
 local margin = template.margin
-local indent = template.indent
 local lineSpacing = template.lineSpacing
-local tableSpacing = template.tableSpacing
 local sp = template.listSpacing.field
 local yMinLim = radio.yMinLimit
 local x = margin
@@ -13,7 +11,7 @@ local fields = {}
 
 local vtx_tables
 if apiVersion >= 1.42 then
-    vtx_tables = assert(loadScript("VTX_TABLES/"..mcuId..".lua"))()
+    vtx_tables = assert(loadScript("VTX_TABLES/"..mcuId..".lua"), "No VTX table!")()
 else
     vtx_tables = assert(loadScript("VTX_TABLES/vtx_defaults.lua"))()
 end

src/SCRIPTS/BF/features.lua

@@ -1,5 +1,6 @@
 local features = {
     vtx = true,
+    gps = true,
 }
 
 return features

src/SCRIPTS/BF/features_info.lua

@@ -0,0 +1,52 @@
+local MSP_GPS_CONFIG = 135
+local MSP_VTX_CONFIG = 88
+
+local isGpsRead = false
+local isVtxRead = false
+
+local lastRunTS = 0
+local INTERVAL = 100
+
+local returnTable = {
+    f = nil,
+    t = "",
+}
+
+local function processMspReply(cmd, payload, err)
+    local isOkay = not err
+    if cmd == MSP_GPS_CONFIG then
+        isGpsRead = true
+        local providerSet = payload[1] ~= 0
+        features.gps = isOkay and providerSet
+    elseif cmd == MSP_VTX_CONFIG then
+        isVtxRead = true
+        local vtxTableAvailable = payload[12] ~= 0
+        features.vtx = isOkay and vtxTableAvailable
+    end
+end
+
+local function updateFeatures()
+    if lastRunTS + INTERVAL < getTime() then
+        lastRunTS = getTime()
+        local cmd
+        if not isGpsRead then
+            cmd = MSP_GPS_CONFIG
+            returnTable.t = "Checking GPS..."
+        elseif not isVtxRead then
+            cmd = MSP_VTX_CONFIG
+            returnTable.t = "Checking VTX..."
+        end
+        if cmd then
+            protocol.mspRead(cmd)
+        else
+            return true
+        end
+    end
+    mspProcessTxQ()
+    processMspReply(mspPollReply())
+    return false
+end
+
+returnTable.f = updateFeatures
+
+return returnTable

src/SCRIPTS/BF/pages.lua

@@ -1,7 +1,7 @@
 local PageFiles = {}
 
-if apiVersion >= 1.36 then
-    PageFiles[#PageFiles + 1] = { title = "VTX Settings", script = "vtx.lua" }
+if apiVersion >= 1.36 and features.vtx then
+    PageFiles[#PageFiles + 1] = { title = "VTX Settings", script = "vtx.lua", init = "PAGES/INIT/vtx.lua" }
 end
 
 if apiVersion >= 1.16 then
@@ -48,11 +48,11 @@ if apiVersion >= 1.16 then
     PageFiles[#PageFiles + 1] = { title = "Failsafe", script = "failsafe.lua" }
 end
 
-if apiVersion >= 1.41 then
+if apiVersion >= 1.41 and features.gps then
     PageFiles[#PageFiles + 1] = { title = "GPS Rescue", script = "rescue.lua" }
 end
 
-if apiVersion >= 1.41 then
+if apiVersion >= 1.41 and features.gps then
     PageFiles[#PageFiles + 1] = { title = "GPS PIDs", script = "gpspids.lua" }
 end
 

src/SCRIPTS/BF/ui.lua

@@ -82,24 +82,6 @@ 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 = {}
@@ -314,7 +296,7 @@ local function run_ui(event)
             return 0
         end
         init = nil
-        PageFiles = filterAvailablePages(assert(loadScript("pages.lua"))())
+        PageFiles = assert(loadScript("pages.lua"))()
         invalidatePages()
         uiState = prevUiState or uiStatus.mainMenu
         prevUiState = nil
@@ -403,8 +385,23 @@ local function run_ui(event)
             end
         end
         if not Page then
-            Page = assert(loadScript("PAGES/"..PageFiles[currentPage].script))()
-            collectgarbage()
+            local function selectPage(page)
+                Page = assert(loadScript("PAGES/"..page))()
+                collectgarbage()
+            end
+
+            local selectedPage = PageFiles[currentPage]
+            if selectedPage.init then
+                local initScript = assert(loadScript(selectedPage.init), "Missing init script")()
+                collectgarbage()
+                if initScript then
+                    confirm(initScript)
+                else
+                    selectPage(selectedPage.script)
+                end
+            else
+                selectPage(selectedPage.script)
+            end
         end
         if not Page.values and pageState == pageStatus.display then
             requestPage()

src/SCRIPTS/BF/ui_init.lua

@@ -1,8 +1,8 @@
 local apiVersionReceived = false
-local vtxTablesReceived = false
 local mcuIdReceived = false
 local boardInfoReceived = false
-local getApiVersion, getVtxTables, getMCUId, getBoardInfo
+local featuresReceived = false
+local getApiVersion, getMCUId, getBoardInfo, getFeaturesInfo
 local returnTable = { f = nil, t = "" }
 
 local function init()
@@ -22,30 +22,6 @@ local function init()
         mcuIdReceived = getMCUId.f()
         if mcuIdReceived then
             getMCUId = 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")
-            if f and f() then
-                boardInfoReceived = true
-                f = nil
-            end
-            collectgarbage()
-        end
-    elseif not vtxTablesReceived and apiVersion >= 1.42 then
-        getVtxTables = getVtxTables or assert(loadScript("vtx_tables.lua"))()
-        returnTable.t = getVtxTables.t
-        vtxTablesReceived = getVtxTables.f()
-        if vtxTablesReceived then
-            getVtxTables = nil
             collectgarbage()
         end
     elseif not boardInfoReceived and apiVersion >= 1.44 then
@@ -56,10 +32,18 @@ local function init()
             getBoardInfo = nil
             collectgarbage()
         end
+    elseif not featuresReceived and apiVersion >= 1.41 then
+        getFeaturesInfo = getFeaturesInfo or assert(loadScript("features_info.lua"))()
+        returnTable.t = getFeaturesInfo.t
+        featuresReceived = getFeaturesInfo.f()
+        if featuresReceived then
+            getFeaturesInfo = nil
+            collectgarbage()
+        end
     else
         return true
     end
-    return apiVersionReceived and vtxTablesReceived and mcuId and boardInfoReceived
+    return apiVersionReceived and vtxTablesReceived and mcuId and boardInfoReceived and featuresReceived
 end
 
 returnTable.f = init