Implement logic for pulsed button presses. This commit has not been tested.

Joystick.h

@@ -15,9 +15,9 @@
 #define JOYSTICK_NUM_BYTES (JOYSTICK_NUM_BUTTONS+7)/8
 
 enum ButtonType {
-  BUTTON_MAINTAINED,
-  BUTTON_PULSED,
-  BUTTON_PULSED_DOUBLE_ACTION
+  BUTTON_MAINTAINED = 0x1,
+  BUTTON_PULSED = 0x2,
+  BUTTON_PULSED_DOUBLE_ACTION = 0x4
 };
 
 typedef struct JoyReport {
@@ -46,6 +46,8 @@ class Joystick {
     void Write();
 
   private:
+    void _ReleasePulsedButtons();
+    
     struct {
       uint8_t pin;
       ButtonType type;
@@ -61,4 +63,7 @@ class Joystick {
     bool _debug;
 };
 
+// Internal use only.
+#define _BUTTON_PULSED_TYPES (BUTTON_PULSED | BUTTON_PULSED_DOUBLE_ACTION)
+
 #endif