[NV14] Use trim hats to emulate key events when standalone lua script running (#985)

* Preliminary trims as keys for lua
Largely based on open-flysky implementation

* Add `isLuaStandaloneRunning()`

* Add more virtual events

* Tweak virtual events further

* Finish remapping keys to virtual events

* Move some virtuals to right trim hat

* Add missing "defined"

* Revert to common EVT_VIRTUAL_MENU mapping

* Make keys/trims reset backlight like other radios

radio/src/lua/api_general.cpp

@@ -2040,6 +2040,9 @@ const luaR_value_entry opentxConstants[] = {
 #if defined(KEYS_GPIO_REG_PGUP)
   { "EVT_VIRTUAL_PREV_PAGE", EVT_KEY_BREAK(KEY_PGUP) },
   { "EVT_VIRTUAL_NEXT_PAGE", EVT_KEY_BREAK(KEY_PGDN) },
+#elif defined(PCBNV14)
+  { "EVT_VIRTUAL_PREV_PAGE", EVT_KEY_BREAK(KEY_LEFT) },
+  { "EVT_VIRTUAL_NEXT_PAGE", EVT_KEY_BREAK(KEY_RIGHT) },
 #else
   { "EVT_VIRTUAL_PREV_PAGE", EVT_KEY_LONG(KEY_PGDN) },
   { "EVT_VIRTUAL_NEXT_PAGE", EVT_KEY_BREAK(KEY_PGDN) },

radio/src/lua/lua_api.h

@@ -240,6 +240,9 @@ struct LuaMemTracer {
 
 void * tracer_alloc(void * ud, void * ptr, size_t osize, size_t nsize);
 
+inline bool isLuaStandaloneRunning() {
+  return scriptInternalData[0].reference == SCRIPT_STANDALONE;
+}
 #else  // defined(LUA)
 
 #define luaInit()

radio/src/targets/nv14/board.h

@@ -144,18 +144,17 @@ void stop_trainer_capture();
 // Keys driver
 enum EnumKeys
 {
+  KEY_ENTER,
+  KEY_EXIT,
   KEY_PGUP,
   KEY_PGDN,
-  KEY_ENTER,
+  KEY_UP,
+  KEY_DOWN,
+  KEY_LEFT,
+  KEY_RIGHT,
   KEY_MODEL,
-  KEY_UP /*= KEY_MODEL*/,
-  KEY_EXIT,
-  KEY_DOWN /*= KEY_EXIT*/,
-  KEY_TELEM,
-  KEY_RIGHT = KEY_TELEM,
   KEY_RADIO,
-  KEY_LEFT = KEY_RADIO,
-
+  KEY_TELEM,
   TRM_BASE,
   TRM_LH_DWN = TRM_BASE,
   TRM_LH_UP,

radio/src/targets/nv14/keys_driver.cpp

@@ -25,20 +25,32 @@
 uint32_t readKeys()
 {
   uint32_t result = 0;
-
-  // Arrow keys on right trim joystick
-  // is only supported within bootloader
-#if defined(BOOT)
-  if (TRIMS_GPIO_REG_RVD & TRIMS_GPIO_PIN_RVD)
-    result |= 1 << KEY_DOWN;
-  if (TRIMS_GPIO_REG_RVU & TRIMS_GPIO_PIN_RVU)
-    result |= 1 << KEY_UP;
-  if (TRIMS_GPIO_REG_RHL & TRIMS_GPIO_PIN_RHL)
-    result |= 1 << KEY_LEFT;
-  if (TRIMS_GPIO_REG_RHR & TRIMS_GPIO_PIN_RHR)
-    result |= 1 << KEY_RIGHT;
+  bool getKeys = true;
+#if defined(LUA)
+  if (!isLuaStandaloneRunning()) {
+    getKeys = false;
+  }
 #endif
 
+  if (getKeys) {
+    if (TRIMS_GPIO_REG_LHL & TRIMS_GPIO_PIN_LHL)
+       result |= 1 << KEY_RADIO;
+     if (TRIMS_GPIO_REG_LHR & TRIMS_GPIO_PIN_LHR)
+       result |= 1 << KEY_MODEL;
+     if (TRIMS_GPIO_REG_LVD & TRIMS_GPIO_PIN_LVD)
+       result |= 1 << KEY_TELEM;
+     if (TRIMS_GPIO_REG_LVU & TRIMS_GPIO_PIN_LVU)
+       result |= 1 << KEY_PGUP;
+     if (TRIMS_GPIO_REG_RVD & TRIMS_GPIO_PIN_RVD)
+       result |= 1 << KEY_DOWN;
+     if (TRIMS_GPIO_REG_RVU & TRIMS_GPIO_PIN_RVU)
+       result |= 1 << KEY_UP;
+     if (TRIMS_GPIO_REG_RHL & TRIMS_GPIO_PIN_RHL)
+       result |= 1 << KEY_LEFT;
+     if (TRIMS_GPIO_REG_RHR & TRIMS_GPIO_PIN_RHR)
+       result |= 1 << KEY_RIGHT;
+  }
+
   // Enter and Exit are always supported
   if (TRIMS_GPIO_REG_RPRESS & TRIMS_GPIO_PIN_RPRESS)
     result |= 1 << KEY_ENTER;
@@ -52,6 +64,13 @@ uint32_t readTrims()
 {
   uint32_t result = 0;
 
+  bool getTrim = true;
+#if defined(LUA)
+  if (isLuaStandaloneRunning()) {
+    getTrim = false;
+  }
+#endif
+  if(!getTrim) return result;
   if (TRIMS_GPIO_REG_LHL & TRIMS_GPIO_PIN_LHL)
     result |= 1 << (TRM_LH_DWN - TRM_BASE);
   if (TRIMS_GPIO_REG_LHR & TRIMS_GPIO_PIN_LHR)
@@ -98,6 +117,11 @@ void readKeysAndTrims()
   for (i = 1; i <= 1 << (TRM_LAST-TRM_BASE); i <<= 1) {
     keys[index++].input(trims & i);
   }
+
+  if ((in || trims) && (g_eeGeneral.backlightMode & e_backlight_mode_keys)) {
+    // on keypress turn the light on
+    resetBacklightTimeout();
+  }
 }
 
 #if !defined(BOOT)