Common: Support >8 inputs

common/src/buttons.rs

@@ -81,13 +81,23 @@ where
     }
 
     fn calculate_press_state(&self) -> u8 {
-        self.current_states.iter().rev().fold(0u8, |acc, state| {
-            // state keeps track of HIGH, but we | on low
-            if *state {
-                acc << 1
-            } else {
-                (acc << 1) | 1
-            }
-        })
+        if self.current_states.len() <= 8 {
+            // For 8 or fewer inputs, assume we're priority-encoded and build a byte with bitflags
+            self.current_states.iter().rev().fold(0u8, |acc, state| {
+                // state keeps track of HIGH, but we | on low
+                if *state {
+                    acc << 1
+                } else {
+                    (acc << 1) | 1
+                }
+            })
+        } else {
+            // For more than 8 inputs, assume buttons are 1-to-1 and send the first found press
+            self.current_states
+                .iter()
+                .enumerate()
+                .find_map(|(i, state)| if *state { None } else { Some(i as u8) })
+                .unwrap_or(0)
+        }
     }
 }