Hide GPS settings if unavailable

Author: atomgomba

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 = true -- Checking VTX is done in `vtx_tables.lua`
+
+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

@@ -1,6 +1,6 @@
 local PageFiles = {}
 
-if apiVersion >= 1.36 then
+if apiVersion >= 1.36 and features.vtx then
     PageFiles[#PageFiles + 1] = { title = "VTX Settings", script = "vtx.lua" }
 end
 
@@ -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

src/SCRIPTS/BF/ui_init.lua

@@ -2,7 +2,8 @@ local apiVersionReceived = false
 local vtxTablesReceived = false
 local mcuIdReceived = false
 local boardInfoReceived = false
-local getApiVersion, getVtxTables, getMCUId, getBoardInfo
+local featuresReceived = false
+local getApiVersion, getVtxTables, getMCUId, getBoardInfo, getFeaturesInfo
 local returnTable = { f = nil, t = "" }
 
 local function init()
@@ -56,10 +57,18 @@ 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