MCU id for vtx tables

Reads MCU id from MSP and uses that unique id to store the vtx tables. This should solve the problem of using an incorrect vtx table when there are different crafts with different vtx hardware under the same model name.

Author: kristjanbjarni

src/SCRIPTS/BF/PAGES/vtx.lua

@@ -1,5 +1,4 @@
-local md = model.getInfo();
-local vtx_tables = loadScript("/BF/VTX/"..md.name..".lua")
+local vtx_tables = loadScript("/BF/VTX/"..mcuId..".lua")
 if vtx_tables then
     vtx_tables = vtx_tables()
 else

src/SCRIPTS/BF/mcu_id.lua

@@ -0,0 +1,37 @@
+local MSP_UID = 160
+
+local MCUIdReceived = false
+
+local lastRunTS = 0
+local INTERVAL = 100
+
+local function processMspReply(cmd, payload)
+    if cmd == MSP_UID then
+        local i = 1
+        local id = ""
+        for j = 1, 3 do
+            local s = ""
+            for k = 1, 4 do
+                s = string.format("%02x", payload[i])..s
+                i = i + 1
+            end
+            id = id..s
+        end
+        mcuId = id
+        MCUIdReceived = true
+    end
+end
+
+local function getMCUId()
+    if lastRunTS + INTERVAL < getTime() then
+        lastRunTS = getTime()
+        if not MCUIdReceived then
+            protocol.mspRead(MSP_UID)
+        end
+    end
+    mspProcessTxQ()
+    processMspReply(mspPollReply())
+    return MCUIdReceived
+end
+
+return getMCUId

src/SCRIPTS/BF/ui.lua

@@ -76,7 +76,7 @@ local function getVtxTables()
     uiState = uiStatus.init
     PageFiles = nil
     invalidatePages()
-    io.close(io.open("/BF/VTX/"..model.getInfo().name..".lua", 'w'))
+    io.close(io.open("/BF/VTX/"..mcuId..".lua", 'w'))
     return 0
 end
 

src/SCRIPTS/BF/ui_init.lua

@@ -1,13 +1,6 @@
 local apiVersionReceived = false
 local vtxTablesReceived = false
-local data_init, getVtxTables
-local vtxTables = loadScript("/BF/VTX/"..model.getInfo().name..".lua")
-
-if vtxTables and vtxTables() then
-    vtxTablesReceived = true
-    vtxTables = nil
-    collectgarbage()
-end
+local data_init, getVtxTables, getMCUId
 
 local function init()
     if apiVersion == 0 then
@@ -18,6 +11,18 @@ local function init()
         data_init = nil
         apiVersionReceived = true
         collectgarbage()
+    elseif not mcuId then
+        lcd.drawText(6, radio.yMinLimit, "Waiting for unique device ID")
+        getMCUId = getMCUId or assert(loadScript("mcu_id.lua"))()
+        if getMCUId() then
+            getMCUId = nil
+            local vtxTables = loadScript("/BF/VTX/"..mcuId..".lua")
+            if vtxTables and vtxTables() then
+                vtxTablesReceived = true
+                vtxTables = nil
+            end
+            collectgarbage()
+        end
     elseif apiVersion >= 1.042 and not vtxTablesReceived then
         lcd.drawText(6, radio.yMinLimit, "Downloading VTX Tables")
         getVtxTables = getVtxTables or assert(loadScript("vtx_tables.lua"))()
@@ -29,7 +34,7 @@ local function init()
     else
         return true
     end
-    return apiVersionReceived and vtxTablesReceived
+    return apiVersionReceived and vtxTablesReceived and mcuId
 end
 
 return init

src/SCRIPTS/BF/vtx_tables.lua

@@ -82,7 +82,7 @@ local function getVtxTables()
         end
     end
     if vtxTablesReceived then
-        local f = io.open("/BF/VTX/"..model.getInfo().name..".lua", 'w')
+        local f = io.open("/BF/VTX/"..mcuId..".lua", 'w')
         io.write(f, "return {", "\n")
         io.write(f, "    frequencyTable = {", "\n")
         for i = 1, #frequencyTable do
@@ -109,7 +109,7 @@ local function getVtxTables()
         io.write(f, powerString, "\n")
         io.write(f, "}", "\n")
         io.close(f)
-        assert(loadScript("/BF/VTX/"..model.getInfo().name..".lua", 'c'))
+        assert(loadScript("/BF/VTX/"..mcuId..".lua", 'c'))
     end
     mspProcessTxQ()
     processMspReply(mspPollReply())

src/SCRIPTS/TOOLS/bf.lua

@@ -2,6 +2,7 @@ local toolName = "TNS|Betaflight setup|TNE"
 chdir("/SCRIPTS/BF")
 
 apiVersion = 0
+mcuId = nil
 
 local run = nil
 local scriptsCompiled = assert(loadScript("COMPILE/scripts_compiled.lua"))()