4 files changed, 24 insertions, 2 deletions
diff --git a/arm7/lib/include/PAD_xyButton.h b/arm7/lib/include/PAD_xyButton.h
index 49bc75bb..6d8c0d38 100644
--- a/arm7/lib/include/PAD_xyButton.h
+++ b/arm7/lib/include/PAD_xyButton.h
@@ -1,8 +1,12 @@
 #ifndef POKEDIAMOND_PAD_XYBUTTON_H
 #define POKEDIAMOND_PAD_XYBUTTON_H
 
+#include "mmap.h"
 #include "nitro/types.h"
 
+#define BUTTON_XY_BUF (*(vu16 *) HW_BUTTON_XY_BUF)
+
 BOOL PAD_InitXYButton(void);
+void PADi_xyButtonAlarmHandler(void);
 
 #endif
diff --git a/arm7/lib/include/mmap.h b/arm7/lib/include/mmap.h
index 1b403dc5..f43b4bc4 100644
--- a/arm7/lib/include/mmap.h
+++ b/arm7/lib/include/mmap.h
@@ -24,6 +24,7 @@
 #define HW_PRV_WRAM_SYSRV           (HW_PRV_WRAM + HW_PRV_WRAM_SIZE - HW_PRV_WRAM_SYSRV_SIZE)
 
 #define HW_VBLANK_COUNT_BUF         (HW_MAIN_MEM + 0x007ffc3c)
+#define HW_BUTTON_XY_BUF            (HW_MAIN_MEM + 0x007FFFA8)
 #define HW_LOCK_ID_FLAG_SUB         (HW_MAIN_MEM + 0x007fffb8)
 
 #endif //POKEDIAMOND_ARM7_MMAP_H
diff --git a/arm7/lib/include/registers.h b/arm7/lib/include/registers.h
index 4ef8bdfb..1fb1e9ca 100644
--- a/arm7/lib/include/registers.h
+++ b/arm7/lib/include/registers.h
@@ -3,4 +3,12 @@
 
 #include "nitro/registers_shared.h"
 
+#define reg_EXTKEYIN (*(REGType16v *)0x4000136)
+
+#define EXTKEYIN_X (1<<0)
+#define EXTKEYIN_Y (1<<1)
+#define EXTKEYIN_DEBUG (1<<3)
+#define EXTKEYIN_PEN (1<<6)
+#define EXTKEYIN_HINGE (1<<7)
+
 #endif //POKEDIAMOND_ARM7_REGISTERS_H
diff --git a/arm7/lib/src/PAD_xyButton.c b/arm7/lib/src/PAD_xyButton.c
index d224d6a5..fa344f04 100644
--- a/arm7/lib/src/PAD_xyButton.c
+++ b/arm7/lib/src/PAD_xyButton.c
@@ -2,11 +2,12 @@
 #include "OS_alarm.h"
 #include "OS_tick.h"
 #include "PAD_xyButton.h"
+#include "registers.h"
 
 static BOOL PADi_XYButtonAvailable;
 static OSAlarm PADi_Alarm;
 
-extern void FUN_037FB92C(void);
+void EXIi_SelectRcnt(u16);
 
 ARM_FUNC BOOL PAD_InitXYButton(void) {
     OSTick tick;
@@ -17,8 +18,16 @@ ARM_FUNC BOOL PAD_InitXYButton(void) {
     else {
         OS_CreateAlarm(&PADi_Alarm);
         tick = OS_GetTick();
-        OS_SetPeriodicAlarm(&PADi_Alarm, tick + 0x82e, 0x82e, (OSAlarmHandler)FUN_037FB92C, NULL);
+        OS_SetPeriodicAlarm(&PADi_Alarm, tick + 0x82e, 0x82e, (OSAlarmHandler)PADi_xyButtonAlarmHandler, NULL);
         PADi_XYButtonAvailable = TRUE;
         return TRUE;
     }
 }
+
+void PADi_xyButtonAlarmHandler(void) {
+    u16 r4 = 0, r1;
+    EXIi_SelectRcnt(0x8000);
+    r1 = reg_EXTKEYIN;
+    if(r1 & EXTKEYIN_HINGE) r4 = 0x8000;
+    BUTTON_XY_BUF = r4 | ((r1 & (EXTKEYIN_X | EXTKEYIN_Y | EXTKEYIN_DEBUG)) << 10);
+}