LCD asynchronous refresh prepared for Taranis+

radio/src/lcd.h

@@ -264,7 +264,14 @@ void lcdSetRefVolt(unsigned char val);
 void lcdInit();
 void lcd_clear();
 void lcdSetContrast();
-void lcdRefresh();
+
+#if defined(PCBTARANIS) && defined(REVPLUS) && !defined(SIMU)
+  void lcdRefresh(bool wait=true);
+  #define LCD_REFRESH_DONT_WAIT false
+#else
+  void lcdRefresh();
+  #define LCD_REFRESH_DONT_WAIT
+#endif
 
 #if defined(PCBTARANIS)
   const pm_char * bmpLoad(uint8_t *dest, const char *filename, const xcoord_t width, const uint8_t height);

radio/src/opentx.cpp

@@ -2853,7 +2853,8 @@ void perMain()
   }
 
   drawStatusLine();
-  lcdRefresh();
+
+  lcdRefresh(LCD_REFRESH_DONT_WAIT);
 
   if (SLAVE_MODE()) {
     JACK_PPM_OUT();

radio/src/targets/taranis/lcd_driver.cpp

@@ -161,7 +161,7 @@ void Set_Address(u8 x, u8 y)
   LCD_CLK_HIGH();
 
 #if defined(REVPLUS)
-void lcdRefresh()
+void lcdRefresh(bool wait)
 {
   Set_Address(0, 0);