Use MSP_BUILD_INFO if >= MSP 1.47

Author: atomgomba

src/SCRIPTS/BF/features.lua

@@ -1,7 +1,8 @@
 local features = {
-    vtx   = true,
-    gps   = true,
-    osdSD = true,
+    vtx      = true,
+    gps      = true,
+    osdSD    = true,
+    blackbox = true,
 }
 
 return features

src/SCRIPTS/BF/features_info.lua

@@ -1,6 +1,7 @@
 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
@@ -21,20 +22,33 @@ local returnTable = {
 }
 
 local function processBuildInfoReply(payload)
-    -- TODO: parse build options
+    features.gps = false
+    features.vtx = false
+    features.osdSD = false
+    for i=1,#payload,2 do
+        local byte1 = payload[i]
+        local byte2 = payload[i + 1]
+        local word = bit32.bor(bit32.arshift(byte1, -8), byte2)
+        if word == BUILD_OPTION_GPS then
+            features.gps = true
+        elseif word == BUILD_OPTION_OSD_SD then
+            features.osdSD = true
+        elseif word == BUILD_OPTION_VTX then
+            features.vtx = true
+        end
+    end
 end
 
 local function processMspReply(cmd, payload, err)
     isInFlight = false
     local isOkay = not err
     if cmd == MSP_BUILD_INFO then
-        if not isOkay then
-            return
-        end
         isGpsRead = true
         isVtxRead = true
         isOsdSDRead = true
-        processBuildInfoReply(payload)
+        if isOkay then
+            processBuildInfoReply(payload)
+        end
     elseif cmd == MSP_GPS_CONFIG then
         isGpsRead = true
         local providerSet = payload[1] ~= 0