Merge pull request #373 from EdgeTX/2.4

Merge from 2.4

radio/src/lua/api_general.cpp

@@ -74,6 +74,8 @@
   #define RADIO_VERSION FLAVOUR
 #endif
 
+#define VERSION_OSNAME "EdgeTX"
+
 #define FIND_FIELD_DESC  0x01
 
 #define KEY_EVENTS(xxx, yyy)  \
@@ -93,15 +95,17 @@ Return OpenTX version
 
 @retval string OpenTX version (ie "2.1.5")
 
-@retval multiple (available since 2.1.7) returns 5 values:
+@retval multiple values (available since 2.1.7):
  * (string) OpenTX version (ie "2.1.5")
  * (string) radio type: `x12s`, `x10`, `x9e`, `x9d+`, `x9d` or `x7`.
 If running in simulator the "-simu" is added
  * (number) major version (ie 2 if version 2.1.5)
  * (number) minor version (ie 1 if version 2.1.5)
  * (number) revision number (ie 5 if version 2.1.5)
+Since EdgeTX 2.4.0, sixth value added
+ * (string) OS name (i.e. EdgeTX or nil if OpenTX)
 
-@status current Introduced in 2.0.0, expanded in 2.1.7, radio type strings changed in 2.2.0
+@status current Introduced in 2.0.0, expanded in 2.1.7, radio type strings changed in 2.2.0, os name added in EdgeTX 2.4.0
 
 ### Example
 
@@ -109,12 +113,13 @@ This example also runs in OpenTX versions where the function returned only one v
 
 ```lua
 local function run(event)
-  local ver, radio, maj, minor, rev = getVersion()
+  local ver, radio, maj, minor, rev, osname = getVersion()
   print("version: "..ver)
   if radio then print ("radio: "..radio) end
   if maj then print ("maj: "..maj) end
   if minor then print ("minor: "..minor) end
   if rev then print ("rev: "..rev) end
+  if osname then print ("osname: "..osname) end
   return 1
 end
 
@@ -122,11 +127,12 @@ return {  run=run }
 ```
 Output of the above script in simulator:
 ```
-version: 2.1.7
-radio: taranis-simu
+version: 2.4.0
+radio: tx16s-simu
 maj: 2
-minor: 1
-rev: 7
+minor: 4
+rev: 0
+osname: EdgeTX
 ```
 */
 static int luaGetVersion(lua_State * L)
@@ -136,7 +142,8 @@ static int luaGetVersion(lua_State * L)
   lua_pushnumber(L, VERSION_MAJOR);
   lua_pushnumber(L, VERSION_MINOR);
   lua_pushnumber(L, VERSION_REVISION);
-  return 5;
+  lua_pushstring(L, VERSION_OSNAME);
+  return 6;
 }
 
 /*luadoc

radio/src/lua/widgets.cpp

@@ -198,6 +198,7 @@ class LuaWidget: public Widget
     int    luaWidgetDataRef;
     char * errorMessage;
     uint32_t lastRefresh = 0;
+    bool     refreshed = false;
 
     void checkEvents() override;
     void setErrorMessage(const char * funcName);
@@ -270,9 +271,16 @@ void LuaWidget::checkEvents()
 {
   Widget::checkEvents();
 
+  // paint has not been called
+  if (!refreshed) {
+    background();
+    refreshed = true;
+  }
+  
   uint32_t now = RTOS_GET_MS();
   if (now - lastRefresh >= LUA_WIDGET_REFRESH) {
     lastRefresh = now;
+    refreshed = false;
     invalidate();
 
 #if defined(DEBUG_WINDOWS)
@@ -343,12 +351,16 @@ void LuaWidget::refresh(BitmapBuffer* dc)
   // Remove LCD
   luaLcdAllowed = false;
   luaLcdBuffer = nullptr;
+
+  // mark as refreshed
+  refreshed = true;
 }
 
 void LuaWidget::background()
 {
   if (lsWidgets == 0 || errorMessage) return;
 
+  TRACE("LuaWidget::background()");
   luaSetInstructionsLimit(lsWidgets, WIDGET_SCRIPTS_MAX_INSTRUCTIONS);
   LuaWidgetFactory * factory = (LuaWidgetFactory *)this->factory;
   if (factory->backgroundFunction) {