diff --git a/lab5.c b/lab5.c
index 3bd285d..baa9472 100644
--- a/lab5.c
+++ b/lab5.c
@@ -2,6 +2,7 @@
 #include <stdbool.h>
 #include "tm4c123gh6pm.h"
 
+void GPIOIntHandler(void);
 int main(void)
 {
     SYSCTL_RCGC2_R |= 0x00000020;       /* enable clock to GPIOF */
@@ -10,8 +11,17 @@ int main(void)
     GPIO_PORTF_DEN_R = 0x1F;            /* set PORTF pins 5 pins*/
     GPIO_PORTF_DIR_R = 0x0E;            /* set PORTF0 PORTF4 pin as input user switch pin */
     GPIO_PORTF_PUR_R = 0x11;            /* PORTF4 PORT0 is pulled up */
-    GPIO_PORTF_IM_R = 0x11              /*Masking the ports*/
+    GPIO_PORTF_IM_R = 0x11;            /*Masking the ports*/
+    GPIO_PORTF_IS_R = 0x00;
     GPIO_PORTF_IEV_R = 0x00;            /*detects the falling edge of the switch*/
-
-
+    GPIO_PORTF_IBE_R = 0x00
 }
+
+while(1)
+    {
+
+
+
+
+
+    }
diff --git a/tm4c123gh6pm_startup_ccs.c b/tm4c123gh6pm_startup_ccs.c
index a8f43e7..a1ca3e6 100644
--- a/tm4c123gh6pm_startup_ccs.c
+++ b/tm4c123gh6pm_startup_ccs.c
@@ -33,6 +33,7 @@ void ResetISR(void);
 static void NmiSR(void);
 static void FaultISR(void);
 static void IntDefaultHandler(void);
+void GPIOIntHandler(void);
 
 //*****************************************************************************
 //
@@ -113,7 +114,7 @@ void (* const g_pfnVectors[])(void) =
     IntDefaultHandler,                      // Analog Comparator 2
     IntDefaultHandler,                      // System Control (PLL, OSC, BO)
     IntDefaultHandler,                      // FLASH Control
-    IntDefaultHandler,                      // GPIO Port F
+    GPIOIntHandler,                      // GPIO Port F
     IntDefaultHandler,                      // GPIO Port G
     IntDefaultHandler,                      // GPIO Port H
     IntDefaultHandler,                      // UART2 Rx and Tx