[Core] Add `is_oled_scrolling` (#14305)

docs/feature_oled_driver.md

@@ -356,6 +356,10 @@ bool oled_scroll_left(void);
 // Returns true if the screen was not scrolling or stops scrolling
 bool oled_scroll_off(void);
 
+// Returns true if the oled is currently scrolling, false if it is
+// not
+bool is_oled_scrolling(void);
+
 // Inverts the display
 // Returns true if the screen was or is inverted
 bool oled_invert(bool invert);

drivers/oled/oled_driver.h

@@ -313,6 +313,10 @@ bool oled_scroll_left(void);
 // Returns true if the screen was not scrolling or stops scrolling
 bool oled_scroll_off(void);
 
+// Returns true if the oled is currently scrolling, false if it is
+// not
+bool is_oled_scrolling(void);
+
 // Inverts the display
 // Returns true if the screen was or is inverted
 bool oled_invert(bool invert);

drivers/oled/ssd1306_sh1106.c

@@ -692,6 +692,8 @@ bool oled_scroll_off(void) {
     return !oled_scrolling;
 }
 
+bool is_oled_scrolling(void) { return oled_scrolling; }
+
 bool oled_invert(bool invert) {
     if (!oled_initialized) {
         return oled_inverted;