Use MSP_BUILD_INFO if available (WIP)

Author: atomgomba

src/SCRIPTS/BF/features_info.lua

@@ -1,6 +1,11 @@
 local MSP_GPS_CONFIG = 135
 local MSP_VTX_CONFIG = 88
 local MSP_OSD_CONFIG = 84
+local MSP_BUILD_INFO = 5
+
+local BUILD_OPTION_GPS    = 16412
+local BUILD_OPTION_OSD_SD = 16416
+local BUILD_OPTION_VTX    = 16421
 
 local isGpsRead = false
 local isVtxRead = false
@@ -15,10 +20,22 @@ local returnTable = {
     t = "",
 }
 
+local function processBuildInfoReply(payload)
+    -- TODO: parse build options
+end
+
 local function processMspReply(cmd, payload, err)
     isInFlight = false
     local isOkay = not err
-    if cmd == MSP_GPS_CONFIG then
+    if cmd == MSP_BUILD_INFO then
+        if not isOkay then
+            return
+        end
+        isGpsRead = true
+        isVtxRead = true
+        isOsdSDRead = true
+        processBuildInfoReply(payload)
+    elseif cmd == MSP_GPS_CONFIG then
         isGpsRead = true
         local providerSet = payload[1] ~= 0
         features.gps = isOkay and providerSet
@@ -37,7 +54,10 @@ local function updateFeatures()
     if lastRunTS + INTERVAL < getTime() then
         lastRunTS = getTime()
         local cmd
-        if not isGpsRead then
+        if apiVersion >= 1.47 then
+            cmd = MSP_BUILD_INFO
+            returnTable.t = "Checking options..."
+        elseif not isGpsRead then
             cmd = MSP_GPS_CONFIG
             returnTable.t = "Checking GPS..."
         elseif not isVtxRead then