Added hidGetHandheldMode().

nx/include/switch/services/hid.h

@@ -581,6 +581,10 @@ void hidTouchRead(touchPosition *pos, u32 point_id);
 
 void hidJoystickRead(JoystickPosition *pos, HidControllerID id, HidControllerJoystick stick);
 
+/// This can be used to check what CONTROLLER_P1_AUTO uses.
+/// Returns 0 when CONTROLLER_PLAYER_1 is connected, otherwise returns 1 for handheld-mode.
+bool hidGetHandheldMode(void);
+
 /// Use this if you want to use a single joy-con as a dedicated CONTROLLER_PLAYER_*.
 /// When used, both joy-cons in a pair should be used with this (CONTROLLER_PLAYER_1 and CONTROLLER_PLAYER_2 for example).
 /// id must be CONTROLLER_PLAYER_*.

nx/source/services/hid.c

@@ -370,6 +370,10 @@ void hidJoystickRead(JoystickPosition *pos, HidControllerID id, HidControllerJoy
     }
 }
 
+bool hidGetHandheldMode(void) {
+    return g_controllerP1AutoID == CONTROLLER_HANDHELD;
+}
+
 static Result _hidSetDualModeAll(void) {
     Result rc;
     int i;