Configurations of EPI in TM4C1294NCPDT

Hi,

I'm begginer in the subject of programming in microcontrollers, and I'm working with EPI in TM4C1294NCPDT board and I'm having some issues with the configuration of EPI bus interface (host bus 16 mode) for parallel communication to SRAM. I'm not getting desired output waves, only noises in the oscilloscope. Is something wrong in the code below?

I must set the bit in AFSEL register or it's already included in some of the functions that I put in the code?? Is necessary to put the GPIOPadConfigSet and GPIODirModeSet when the GPIOPinTypeEPI is already included in the code??

Code:

#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/epi.h"
#include "driverlib/debug.h"
#include "driverlib/systick.h"
#include "driverlib/timer.h"

#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_epi.h"
#include "inc/hw_gpio.h"


void main(void)
{
    volatile uint16_t *mem;
    volatile uint16_t data;

    SysCtlClockFreqSet((SYSCTL_OSC_INT | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_320), 120000000);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOK);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOL);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOP);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOQ);

    GPIOPinConfigure(GPIO_PB3_EPI0S28); //RD
    GPIOPinConfigure(GPIO_PP2_EPI0S29); //WR
    GPIOPinConfigure(GPIO_PK0_EPI0S0); //D0
    GPIOPinConfigure(GPIO_PK1_EPI0S1); //D1
    GPIOPinConfigure(GPIO_PK2_EPI0S2); //D2
    GPIOPinConfigure(GPIO_PK3_EPI0S3); //D3
    GPIOPinConfigure(GPIO_PC7_EPI0S4); //D4
    GPIOPinConfigure(GPIO_PC6_EPI0S5); //D5
    GPIOPinConfigure(GPIO_PC5_EPI0S6); //D6
    GPIOPinConfigure(GPIO_PC4_EPI0S7); //D7
    GPIOPinConfigure(GPIO_PA6_EPI0S8); //D8
    GPIOPinConfigure(GPIO_PA7_EPI0S9); //D9
    GPIOPinConfigure(GPIO_PG1_EPI0S10); //D10
    GPIOPinConfigure(GPIO_PG0_EPI0S11); //D11
    GPIOPinConfigure(GPIO_PM3_EPI0S12); //D12
    GPIOPinConfigure(GPIO_PM2_EPI0S13); //D13
    GPIOPinConfigure(GPIO_PM1_EPI0S14); //D14
    GPIOPinConfigure(GPIO_PM0_EPI0S15); //D15
    GPIOPinConfigure(GPIO_PL0_EPI0S16); //A0
    GPIOPinConfigure(GPIO_PL1_EPI0S17); //A1
    GPIOPinConfigure(GPIO_PL2_EPI0S18); //A2
    GPIOPinConfigure(GPIO_PL3_EPI0S19); //A3
    GPIOPinConfigure(GPIO_PQ0_EPI0S20); //A4
    GPIOPinConfigure(GPIO_PQ1_EPI0S21); //A5
    GPIOPinConfigure(GPIO_PQ2_EPI0S22); //A6
    GPIOPinConfigure(GPIO_PQ3_EPI0S23); //A7
    GPIOPinConfigure(GPIO_PK7_EPI0S24); //A8
    GPIOPinConfigure(GPIO_PK6_EPI0S25); //A9
    GPIOPinConfigure(GPIO_PL4_EPI0S26); //A10
    GPIOPinConfigure(GPIO_PB2_EPI0S27); //A11

    GPIOPinConfigure(GPIO_PP3_EPI0S30); //CHIP SELECT - ALE
    GPIOPinConfigure(GPIO_PK5_EPI0S31); //CLK
    GPIOPinConfigure(GPIO_PK4_EPI0S32); //IRDY
    GPIOPinConfigure(GPIO_PN5_EPI0S35); //CRE

    SysCtlPeripheralEnable(SYSCTL_PERIPH_EPI0);//ENABLE EPI0

    EPIDividerSet(EPI0_BASE, 6);//CONFIGURE EPI0

    GPIOPinTypeEPI(GPIO_PORTA_BASE, 0xC0);
    GPIOPinTypeEPI(GPIO_PORTB_BASE, 0x0C);
    GPIOPinTypeEPI(GPIO_PORTC_BASE, 0xF0);
    GPIOPinTypeEPI(GPIO_PORTG_BASE, 0x03);
    GPIOPinTypeEPI(GPIO_PORTK_BASE, 0xFF);
    GPIOPinTypeEPI(GPIO_PORTL_BASE, 0x1F);
    GPIOPinTypeEPI(GPIO_PORTM_BASE, 0x0F);
    GPIOPinTypeEPI(GPIO_PORTN_BASE, 0x20);
    GPIOPinTypeEPI(GPIO_PORTP_BASE, 0x0C);
    GPIOPinTypeEPI(GPIO_PORTQ_BASE, 0x0F);

    EPIModeSet(EPI0_BASE, EPI_MODE_HB16);

    EPIConfigHB16Set(EPI0_BASE, EPI_HB16_MODE_ADMUX | EPI_HB16_WRWAIT_1 | EPI_HB16_RDWAIT_1 | EPI_HB16_ALE_LOW | EPI_HB16_WORD_ACCESS, 0);

    EPIAddressMapSet(EPI0_BASE, EPI_ADDR_PER_BASE_C | EPI_ADDR_PER_SIZE_64KB);

    mem = (uint16_t*) 0xC0000000;

    while(1)
    {
        data = *mem;
        data++;
        *mem = data;
    }
}