// Enable Port J&N clock control]

# define SYSCTL_RCGCGPIO_R (*((volatile unsigned long *) 0x400FE608))
# define SYSCTL_RCGCGPIO_GPIOJN 0x00001100
// GPIO Port N, pin 1

# define GPIO_PORTN_DIR_R   (*((volatile unsigned long *) 0x40064400))
# define GPIO_PORTN_DEN_R   (*((volatile unsigned long *) 0x4006451C))
# define GPIO_PORTN_DATA_WR (*((volatile unsigned long *) 0x40064008)) // Bit-Specific For Pin 1

// GPIO Port J, pin 0 (Pin 1 from template)

# define GPIO_PORTJ_DIR_R (*((volatile unsigned long *) 0x40060400))
# define GPIO_PORTJ_DEN_R (*((volatile unsigned long *) 0x4006051C))
# define GPIO_PORTJ_PUR_R (*((volatile unsigned long *) 0x40060510)) // Input
# define GPIO_PORTJ_DATA_RD (*((volatile unsigned long *) 0x40060004)) // Input_ Bit Specific for Pin 0

// Port pin definitions

# define GPIO_PORTJ_PIN0 0x01
# define GPIO_PORTN_PIN1 0x02

// Default clock frequency and delay definition
# define SYSTEM_CLOCK_FREQUENCY     16000000
# define DELAY_VALUE                SYSTEM_CLOCK_FREQUENCY/1000

// IRQ 32 to 63 Set Enable Register
# define NVIC_EN1_R       (*((volatile unsigned long *) 0xE000E104)) // NVIC Interrupt Enable (32-63) (0x104)

// NVIC interrupt enable configuration constant for Interrupt #51
# define NVIC_EN1_INT51   0x00010000 // ??

// IRQ 48 to 51 Priority Register
# define NVIC_PRI12_R     (*((volatile unsigned long *) 0xE000E430)) // NVIC Interrupt Priority (0x430)

// GPIO Port J Interrupt Configuration
# define GPIO_PORTJ_IS_R  (*((volatile unsigned long *) 0x40060404)) // GPIO Interrupt Sense (0x404)
# define GPIO_PORTJ_IBE_R (*((volatile unsigned long *) 0x40060408)) // GPIO Interrupt Both Edges (0x408)
# define GPIO_PORTJ_IEV_R (*((volatile unsigned long *) 0x4006040C)) // GPIO Interrupt Event (0x40C)
# define GPIO_PORTJ_IM_R  (*((volatile unsigned long *) 0x40060410)) // GPIO Interrupt Mask (0x410)
# define GPIO_PORTJ_ICR_R (*((volatile unsigned long *) 0x4006041C)) // GPIO Interrupt Clear (0x41C)


// Function prototypes

volatile unsigned char SW2;
void Delay ( unsigned long counter );
void GPIOJ_Handler ( void );


// user main program
int main()
{
	// Enable the clock for port J and N (Combined together from template given)
	SYSCTL_RCGCGPIO_R |= SYSCTL_RCGCGPIO_GPIOJN;

	// Enable Ports J and N
		GPIO_PORTJ_DEN_R |=  GPIO_PORTJ_PIN0 ;
		GPIO_PORTN_DEN_R |=  GPIO_PORTN_PIN1 ;

	// Set Pull-Up Resistor for Port J ONLY (Pin 0 = 0x01)
	GPIO_PORTJ_PUR_R |= 0x01;

	// Set Port N Pin 1 as an Output
	GPIO_PORTN_DIR_R |= (GPIO_PORTN_PIN1);

	// Interrupt Register Settings

	GPIO_PORTJ_IS_R   &= ~0x10; // Port J is edge-sensitive
	GPIO_PORTJ_IBE_R  &= ~0x10; // Port J is not both edge sensitive
	GPIO_PORTJ_IEV_R  &= ~0x10; // Port J responds to a falling edge event
	GPIO_PORTJ_IM_R   |= 0x10;  // Enable Interrupt on Port J
	GPIO_PORTJ_ICR_R   = 0x10;  // Clear Port J


	while(1) {
	}

}
// Interrupt service routine for Port J
void GPIOJ_Handler ( void )
{
GPIO_PORTJ_ICR_R = 0x10;
	SW2 = 1;
}
// Function Delay implements the delay
void Delay ( unsigned long counter )
{
unsigned long i = 0;
for (i =0; i < counter ; i ++) ;
}