How to blink a LED with SYSBIOS and Hwi

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/*
 *  ======== empty.c ========
 */
/* XDCtools Header files */
#include <xdc/std.h>
#include <xdc/cfg/global.h>
#include <xdc/runtime/System.h>

/* BIOS Header files */
#include <ti/sysbios/BIOS.h>

#define RED_LED   GPIO_PIN_1
#define BLUE_LED  GPIO_PIN_2
#define GREEN_LED GPIO_PIN_3

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/timer.h"
/* TI-RTOS Header files */
// #include <ti/drivers/GPIO.h>
// #include <ti/drivers/SPI.h>
// #include <ti/drivers/UART.h>
// #include <ti/drivers/Watchdog.h>
// #include <ti/drivers/WiFi.h>

/* Example/Board Header files */
#include "Board.h"

/*
 *  ======== main ========
 */
void isrBlink(void)
{
    GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, RED_LED);
}
Int main(Void)
{
    /* Call board init functions */
    Board_initGeneral();

    System_printf("Starting the example\nSystem provider is set to SysMin. "
                  "Halt the target and use ROV to view output.\n");
    /* SysMin will only print to the console when you call flush or exit */
    System_flush();
    //config GPIO
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);

    GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED);


    TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
    TimerLoadSet(TIMER0_BASE, TIMER_A, SysCtlClockGet());
    TimerEnable(TIMER0_BASE, TIMER_A);
/*    GPIOPinWrite(GPIO_PORTF_BASE, RED_LED, 0xff);
    //
    // Delay for a bit
    //
    SysCtlDelay(20000000);

    //
    // Turn on the LED
    //
    GPIOPinWrite(GPIO_PORTF_BASE, BLUE_LED, 0xff);

    //
    // Delay for a bit
    //
    SysCtlDelay(20000000);
    //
    // Turn on the LED
    //
    GPIOPinWrite(GPIO_PORTF_BASE, GREEN_LED, 0xff);*/
    /* Start BIOS */
    GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, GREEN_LED);
    BIOS_start();

    return (0);
}