Something

diff --git a/firmware/target/arm/sandisk/sansa-e200/button-e200.c b/firmware/target/arm/sandisk/sansa-e200/button-e200.c
index 4498cc0..0e20610 100644
--- a/firmware/target/arm/sandisk/sansa-e200/button-e200.c
+++ b/firmware/target/arm/sandisk/sansa-e200/button-e200.c
@@ -33,6 +33,7 @@ void button_init_device(void)
 {
     /* Enable all buttons except the wheel */
     GPIOF_ENABLE |= 0xff;
+    GPIOH_ENABLE |= (0x3 << 6);
 }

 bool button_hold(void)
@@ -40,6 +41,35 @@ bool button_hold(void)
     return (GPIOF_INPUT_VAL & 0x80)?true:false;
 }

+static int button_wheel(void)
+{
+    char state;
+    char val;
+    static char last_val = 0;
+
+    /* The wheel counts 0 -> 1 -> 3 -> 2 as it rotates clockwise
+       Convert this to 0 -> 1 -> 2 -> 3 */
+    state = ((GPIOH_INPUT_VAL & (0x3 << 6)) >> 6);
+    if(state == 2)
+        val = 3;
+    else if(state == 3)
+        val = 2;
+    else
+        val = state;
+
+    if ((val > last_val) || (val == 3 && last_val == 0))
+    {
+        last_val = val;
+        return BUTTON_SCROLL_UP;
+    } else if ((val < last_val) || (val == 0 && last_val == 3)) {
+        last_val = val;
+        return BUTTON_SCROLL_DOWN;
+    } else {
+        last_val = val;
+        return 0;
+    }
+}
+
 /*
  * Get button pressed from hardware
  */
@@ -76,6 +106,8 @@ #endif
         if ((state & 0x10) == 0) btn |= BUTTON_SELECT; /* The centre button */
         if ((state & 0x20) == 0) btn |= BUTTON_UP; /* The "play" button */
         if ((state & 0x40) != 0) btn |= BUTTON_POWER;
+
+        btn |= button_wheel();
     }

     return btn;