Need help to start on SimpliciTI with MSP430G2553

/**************************************************************************************************
  Filename:       bsp_board.c
  Revised:        $Date: 2009-10-11 16:48:20 -0700 (Sun, 11 Oct 2009) $
  Revision:       $Revision: 20896 $

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  modified, copied or distributed unless embedded on a Texas Instruments microcontroller
  or used solely and exclusively in conjunction with a Texas Instruments radio frequency
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  YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE PROVIDED �AS IS�
  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY
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**************************************************************************************************/

/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 *   BSP (Board Support Package)
 *   Target : Texas Instruments EZ430-RF2500
 *            "MSP430 Wireless Development Tool"
 *   Top-level board code file.
 * =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 */

/* ------------------------------------------------------------------------------------------------
 *                                            Includes
 * ------------------------------------------------------------------------------------------------
 */
#include "bsp.h"
#include "bsp_config.h"

/* ------------------------------------------------------------------------------------------------
 *                                            Prototypes
 * ------------------------------------------------------------------------------------------------
 */

/* ------------------------------------------------------------------------------------------------
 *                                            Defines
 * ------------------------------------------------------------------------------------------------
 */
#define BSP_TIMER_CLK_MHZ   (BSP_CONFIG_CLOCK_MHZ_SELECT)

/* ------------------------------------------------------------------------------------------------
 *                                            Local Variables
 * ------------------------------------------------------------------------------------------------
 */
#if defined(SW_TIMER)
static uint8_t sIterationsPerUsec = 0;
#endif

/**************************************************************************************************
 * @fn          BSP_EARLY_INIT
 *
 * @brief       This function is called by start-up code before doing the normal initialization
 *              of data segments. If the return value is zero, initialization is not performed.
 *              The global macro label "BSP_EARLY_INIT" gets #defined in the bsp_msp430_defs.h
 *              file, according to the specific compiler environment (CCE or IAR). In the CCE
 *              environment this macro invokes "_system_pre_init()" and in the IAR environment
 *              this macro invokes "__low_level_init()".
 *
 * @param       None
 *
 * @return      0 - don't intialize data segments / 1 - do initialization
 **************************************************************************************************
*/
BSP_EARLY_INIT(void)
{
  /* Disable watchdog timer */
  WDTCTL = WDTPW | WDTHOLD;

  /* Return 1 - run seg_init */
  return (1);
}

/**************************************************************************************************
 * @fn          BSP_InitBoard
 *
 * @brief       Initialize the board.
 *
 * @param       none
 *
 * @return      none
 **************************************************************************************************
 */
void BSP_InitBoard(void)
{
  /* configure internal digitally controlled oscillator */
  DCOCTL  = BSP_CONFIG_MSP430_DCOCTL;
  BCSCTL1 = BSP_CONFIG_MSP430_BCSCTL1;

  /* Configure TimerA for use by the delay function */

  /* Reset the timer */
  TA1CTL |= TACLR; /* Set the TACLR */

  /* Clear all settings */
  TA1CTL = 0x0;

  /* Select the clk source to be - SMCLK (Sub-Main CLK)*/
  TA1CTL |= TASSEL_2;

#if defined(SW_TIMER)
#define MHZ_CLOCKS_PER_USEC      BSP_CLOCK_MHZ
#define MHZ_CLOCKS_PER_ITERATION 10

  sIterationsPerUsec = (uint8_t)(((MHZ_CLOCKS_PER_USEC)/(MHZ_CLOCKS_PER_ITERATION))+.5);

  if (!sIterationsPerUsec)
  {
    sIterationsPerUsec = 1;
  }
#endif   /* SW_TIMER */
}

/**************************************************************************************************
 * @fn          BSP_Delay
 *
 * @brief       Sleep for the requested amount of time.
 *
 * @param       # of microseconds to sleep.
 *
 * @return      none
 **************************************************************************************************
 */
void BSP_Delay(uint16_t usec)
#if !defined(SW_TIMER)
{

  TA1R = 0; /* initial count */
  TA1CCR0 = BSP_TIMER_CLK_MHZ*usec; /* compare count. (delay in ticks) */

  /* Start the timer in UP mode */
  TA1CTL |= MC_1;

  /* Loop till compare interrupt flag is set */
  while(!(TA1CCTL0 & CCIFG));

  /* Stop the timer */
  TA1CTL &= ~(MC_1);

  /* Clear the interrupt flag */
   TA1CCTL0 &= ~CCIFG;
}


#else  /* !SW_TIMER */


{
  /* Declared 'volatile' in case User optimizes for speed. This will
   * prevent the optimizer from eliminating the loop completely. But
   * it also generates more code...
   */
  volatile uint16_t repeatCount = sIterationsPerUsec*usec;

  while (repeatCount--) ;

  return;
}

#endif  /* !SW_TIMER */
/**************************************************************************************************
*/