diff --git a/lab5.c b/lab5.c
index baa9472..b863abd 100644
--- a/lab5.c
+++ b/lab5.c
@@ -19,9 +19,23 @@ int main(void)
 
 while(1)
     {
+    GPIO_PORTF_DATA_R = 0x04;
+    }
+
+void GPIOIntHandler(void)
+    {
+    switch(z)
+        {
+        case 0: GPIO_PORTF_DATA_R = 0x02;
+        break;
+
+        case 1: GPIO_PORTF_DATA_R = 0x00;
+        break;
+
+        default : GPIO_PORTF_DATA_R = 0xFF;
 
 
-
+        }
 
 
     }