Problem with AM335X BeagleBone Black

Hi I'm trying to run an example of gpio of starterware for BEAGLEBONE. I want to use a delay for the user LEDs. I'm using the library delay.h.and it does not work does nothing. you can help me? thank you very much, the program is as follows .....

#include "soc_AM335x.h"
#include "beaglebone.h"
#include "gpio_v2.h"
#include "interrupt.h"
#include "dmtimer.h"
#include "delay.h"

#define GPIO_INSTANCE_ADDRESS           (SOC_GPIO_1_REGS)
#define GPIO_INSTANCE_PIN_NUMBER        (23)

int main(void)
{
  
    /* Enabling functional clocks for GPIO1 instance. */
    GPIO1ModuleClkConfig();

    /* Selecting GPIO1[23] pin for use. */
    GPIO1Pin23PinMuxSetup();
    
    /* Enabling the GPIO module. */
    GPIOModuleEnable(GPIO_INSTANCE_ADDRESS);

    /* Resetting the GPIO module. */
    GPIOModuleReset(GPIO_INSTANCE_ADDRESS);

    /* Setting the GPIO pin as an output pin. */
    GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
                   GPIO_INSTANCE_PIN_NUMBER,
                   GPIO_DIR_OUTPUT);
    DelayTimerSetup();
    while(1)
    {
        /* Driving a logic HIGH on the GPIO pin. */
        GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                     GPIO_INSTANCE_PIN_NUMBER,
                     GPIO_PIN_LOW);

        delay(200);

        /* Driving a logic LOW on the GPIO pin. */
        GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                     GPIO_INSTANCE_PIN_NUMBER,
                     GPIO_PIN_HIGH);

       delay(200);
    }

}