show device status text while a COMMAND parameter executes

LVGL command popup now renders the live info string the device sends on
each CMD_QUERY poll, via a getInfo getter passed into CommandPage (keeps
the page decoupled from Protocol). Add a multi-step progress command to
the CRSF simulator so the polling status updates can be tested.

Author: jurgelenas

src/SCRIPTS/CRSFSimulator/csrfsimulator.lua

@@ -547,6 +547,9 @@ local txDevice = {
       status = CRSF.CMD_IDLE,
       timeout = 50,
       info = "",
+      -- Emits a different status string on each CMD_QUERY poll so the UI can be
+      -- checked for live status updates while a command is executing.
+      progress = { "Binding...", "Waiting for RX...", "RX found", "Saving..." },
     },
 
     -- Editable string field
@@ -1025,10 +1028,17 @@ local function handleCommandWrite(device, param, newStatus)
       -- Go straight to executing (matches real ELRS firmware behavior:
       -- most commands skip confirmation and execute immediately)
       state.status = CRSF.CMD_EXECUTING
-      state.info = "Executing..."
       if param.persistent then
+        state.info = "Executing..."
         state.queriesRemaining = nil -- runs until cancelled (e.g., WiFi)
+      elseif param.progress then
+        -- Step through the status strings, one per CMD_QUERY poll, so the
+        -- updated info text from the device can be observed in the UI.
+        state.progressIndex = 1
+        state.info = param.progress[1]
+        state.queriesRemaining = #param.progress
       else
+        state.info = "Executing..."
         state.queriesRemaining = COMMAND_EXECUTE_POLLS
       end
     end
@@ -1043,6 +1053,10 @@ local function handleCommandWrite(device, param, newStatus)
       if state.queriesRemaining <= 0 then
         state.status = CRSF.CMD_IDLE
         state.info = "Complete"
+      elseif param.progress then
+        -- Advance to the next status string for this poll.
+        state.progressIndex = (state.progressIndex or 1) + 1
+        state.info = param.progress[state.progressIndex] or state.info
       end
     end
   end

src/SCRIPTS/TOOLS/ExpressLRS/ui/lvgl.lua

@@ -191,7 +191,7 @@ local function createSpinner(parent)
   })
 end
 
-function CommandPage.showConfirm(name, info, onConfirm, onCancel)
+function CommandPage.showConfirm(name, getInfo, onConfirm, onCancel)
   lvgl.clear()
   local pg = lvgl.page({
     title = "ExpressLRS",
@@ -226,7 +226,8 @@ function CommandPage.showConfirm(name, info, onConfirm, onCancel)
       w = lvgl.PERCENT_SIZE + 100,
       align = CENTER,
       color = COLOR_THEME_DISABLED,
-      text = info or "",
+      -- Prompt supplied by the caller as a getter so it refreshes each frame
+      text = getInfo,
     },
     {
       type = lvgl.RECTANGLE,
@@ -261,7 +262,7 @@ function CommandPage.showConfirm(name, info, onConfirm, onCancel)
   return pg
 end
 
-function CommandPage.showExecuting(title, onCancel)
+function CommandPage.showExecuting(title, getInfo, onCancel)
   lvgl.clear()
   local pg = lvgl.page({
     title = "ExpressLRS",
@@ -287,6 +288,21 @@ function CommandPage.showExecuting(title, onCancel)
   })
   createSpinner(container)
   container:build({
+    {
+      type = lvgl.RECTANGLE,
+      w = lvgl.PERCENT_SIZE + 100,
+      h = lvgl.PAD_LARGE,
+      thickness = 0,
+    },
+    {
+      -- Live status text the device sends back while the command runs.
+      -- Supplied by the caller as a getter so each CMD_QUERY poll response is shown.
+      type = lvgl.LABEL,
+      w = lvgl.PERCENT_SIZE + 100,
+      align = CENTER,
+      font = BOLD,
+      text = getInfo,
+    },
     {
       type = lvgl.RECTANGLE,
       w = lvgl.PERCENT_SIZE + 100,
@@ -538,15 +554,20 @@ local function handleCommandPopup()
     UI.invalidate()
   elseif Protocol.fieldPopup.status == Protocol.CRSF.CMD_ASKCONFIRM then
     if not UI.commandDialog or Protocol.fieldPopup.lastStatus ~= Protocol.CRSF.CMD_ASKCONFIRM then
-      UI.commandDialog = CommandPage.showConfirm(Protocol.fieldPopup.name, Protocol.fieldPopup.info, function()
+      local field = Protocol.fieldPopup
+      UI.commandDialog = CommandPage.showConfirm(field.name, function()
+        return field.info or ""
+      end, function()
         Protocol.commandConfirm()
       end, onCommandCancel)
     end
     Protocol.fieldPopup.lastStatus = Protocol.fieldPopup.status
   elseif Protocol.fieldPopup.status == Protocol.CRSF.CMD_EXECUTING then
     if not UI.commandDialog or Protocol.fieldPopup.lastStatus ~= Protocol.CRSF.CMD_EXECUTING then
-      UI.commandDialog =
-        CommandPage.showExecuting(Protocol.fieldPopup.name or Protocol.fieldPopup.info, onCommandCancel)
+      local field = Protocol.fieldPopup
+      UI.commandDialog = CommandPage.showExecuting(field.name, function()
+        return field.info or ""
+      end, onCommandCancel)
     end
     Protocol.fieldPopup.lastStatus = Protocol.fieldPopup.status
   end