2.1 Using the GPIO initialization ritual, fill in the binary values for each register and the corresponding hex value such that PF4 is a digital input and PF2 is a digital output [ 1 pts ]

PINS ( BITS) 7 6 5 4 3 2 1 0 HEX VALUE

SYSCTL_RCGCGPIO_R

GPIO_PORTF_DIR_R

GPIO_PORTF_AFSEL_R

GPIO_PORTF_PUR_R

GPIO_PORTF_DEN_R

GPIO_PORTF_CR_R

GPIO_PORTF_AMSEL_R

2.2. Write the #define statements for all the registers making sure to assign the correct memory address.

You can rename your registers with simpler and shorter names at this point. [1 pt]

#define PORTFDAT (*(( volatile unsigned long *) 0x400253FC ))

#define RCGCGPIO

#define PORTFDIR.

#define PORTFAFSEL

#define PORTFPUR

#define PORTFDEN

#define PORTFCR

#define PORTFAMSEL..

2.3. Using the hex values found in step 2.1, complete the C programming for the GPIO inintilization ritual below. [ 1 pt]

int main(void)

{

/* enable clock to GPIOF */

RCGCGPIO = ;

/* set PORTF pin as output pins */

PORTFDIR = .. ;

/* set PORTF pin as digital pins */

PORTFDEN = ;

/* set PORTF pin with pullup resistors */

PORTFPUR = ;

/* set PORTF pin as alternate function */

PORTFAFSEL = .. ;

/* set PORTF pin to allow changes on special pin */

PORTFCR = ;

/* set PORTF pin with analog mode */

PORTFAMSEL = ;