text: 
  #ifndef _BOARD_H_
  #define _BOARD_H_
  
  /**
   * \defgroup group_common_boards Generic board support
   *
   * The generic board support module includes board-specific definitions
   * and function prototypes, such as the board initialization function.
   *
   * \{
   */
  
  #include "compiler.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  /*! \name Base Boards
   */
  //! @{
  #define EVK1100                     1  //!< AT32UC3A EVK1100 board.
  #define EVK1101                     2  //!< AT32UC3B EVK1101 board.
  #define UC3C_EK                     3  //!< AT32UC3C UC3C-EK board.
  #define EVK1104                     4  //!< AT32UC3A3 EVK1104 board.
  #define EVK1105                     5  //!< AT32UC3A EVK1105 board.
  #define STK600_RCUC3L0              6  //!< STK600 RCUC3L0 board.
  #define UC3L_EK                     7  //!< AT32UC3L-EK board.
  #define XPLAIN                      8  //!< ATxmega128A1 Xplain board.
  #define STK600_RC064X              10  //!< ATxmega256A3 STK600 board.
  #define STK600_RC100X              11  //!< ATxmega128A1 STK600 board.
  #define UC3_A3_XPLAINED            13  //!< ATUC3A3 UC3-A3 Xplained board.
  #define UC3_L0_XPLAINED            15  //!< ATUC3L0 UC3-L0 Xplained board.
  #define STK600_RCUC3D              16  //!< STK600 RCUC3D board.
  #define STK600_RCUC3C0             17  //!< STK600 RCUC3C board.
  #define XMEGA_B1_XPLAINED          18  //!< ATxmega128B1 Xplained board.
  #define XMEGA_A1_XPLAINED          19  //!< ATxmega128A1 Xplain-A1 board.
  #define XMEGA_A1U_XPLAINED_PRO     20  //!< ATxmega128A1U XMEGA-A1U Xplained Pro board.
  #define STK600_RCUC3L4             21  //!< ATUCL4 STK600 board
  #define UC3_L0_XPLAINED_BC         22  //!< ATUC3L0 UC3-L0 Xplained board controller board
  #define MEGA1284P_XPLAINED_BC      23  //!< ATmega1284P-Xplained board controller board
  #define STK600_RC044X              24  //!< STK600 with RC044X routing card board.
  #define STK600_RCUC3B0             25  //!< STK600 RCUC3B0 board.
  #define UC3_L0_QT600               26  //!< QT600 UC3L0 MCU board.
  #define XMEGA_A3BU_XPLAINED        27  //!< ATxmega256A3BU Xplained board.
  #define STK600_RC064X_LCDX         28  //!< XMEGAB3 STK600 RC064X LCDX board.
  #define STK600_RC100X_LCDX         29  //!< XMEGAB1 STK600 RC100X LCDX board.
  #define UC3B_BOARD_CONTROLLER      30  //!< AT32UC3B1 board controller for Atmel boards
  #define RZ600                      31  //!< AT32UC3A RZ600 MCU board
  #define SAM3S_EK                   32  //!< SAM3S-EK board.
  #define SAM3U_EK                   33  //!< SAM3U-EK board.
  #define SAM3X_EK                   34  //!< SAM3X-EK board.
  #define SAM3N_EK                   35  //!< SAM3N-EK board.
  #define SAM3S_EK2                  36  //!< SAM3S-EK2 board.
  #define SAM4S_EK                   37  //!< SAM4S-EK board.
  #define STK600_RCUC3A0             38  //!< STK600 RCUC3A0 board.
  #define STK600_MEGA                39  //!< STK600 MEGA board.
  #define MEGA_1284P_XPLAINED        40  //!< ATmega1284P Xplained board.
  #define SAM4S_XPLAINED             41  //!< SAM4S Xplained board.
  #define ATXMEGA128A1_QT600         42  //!< QT600 ATXMEGA128A1 MCU board.
  #define ARDUINO_DUE_X              43  //!< Arduino Due/X board.
  #define STK600_RCUC3L3             44  //!< ATUCL3 STK600 board
  #define SAM4L_EK                   45  //!< SAM4L-EK board.
  #define STK600_MEGA_RF             46  //!< STK600 MEGA RF EVK board.
  #define XMEGA_C3_XPLAINED          47  //!< ATxmega384C3 Xplained board.
  #define STK600_RC032X              48  //!< STK600 with RC032X routing card board.
  #define SAM4S_EK2                  49  //!< SAM4S-EK2 board.
  #define XMEGA_E5_XPLAINED          50  //!< ATxmega32E5 Xplained board.
  #define SAM4E_EK                   51  //!< SAM4E-EK board.
  #define ATMEGA256RFR2_XPLAINED_PRO 52  //!< ATmega256RFR2 Xplained Pro board.
  #define SAM4S_XPLAINED_PRO         53  //!< SAM4S Xplained Pro board.
  #define SAM4L_XPLAINED_PRO         54  //!< SAM4L Xplained Pro board.
  #define ATMEGA256RFR2_ZIGBIT       55  //!< ATmega256RFR2 zigbit
  #define XMEGA_RF233_ZIGBIT         56  //!< ATxmega256A3U with AT86RF233 Zigbit
  #define XMEGA_RF212B_ZIGBIT        57  //!< ATxmega256A3U with AT86RF212B Zigbit
  #define SAM4S_WPIR_RD              58  //!< SAM4S-WPIR-RD board.
  #define SAMD20_XPLAINED_PRO        59  //!< SAM D20 Xplained Pro board
  #define SAM4L8_XPLAINED_PRO        60  //!< SAM4L8 Xplained Pro board.
  #define SAM4N_XPLAINED_PRO         61  //!< SAM4N Xplained Pro board.
  #define XMEGA_A3_REB_CBB           62  //!< XMEGA REB Controller Base board.
  #define ATMEGARFX_RCB              63  //!< RFR2 & RFA1 RCB
  #define SAM4C_EK                   64  //!< SAM4C-EK board.
  #define RCB256RFR2_XPRO            65  //!< RFR2 RCB Xplained Pro board.
  #define SAMG53_XPLAINED_PRO        66  //!< SAMG53 Xplained Pro board.
  #define SAM4CP16BMB                67  //!< SAM4CP16BMB board.
  #define SAM4E_XPLAINED_PRO         68  //!< SAM4E Xplained Pro board.
  #define SAMD21_XPLAINED_PRO        69  //!< SAM D21 Xplained Pro board.
  #define SAMR21_XPLAINED_PRO        70  //!< SAM R21 Xplained Pro board.
  #define SAM4CMP_DB                 71  //!< SAM4CMP demo board.
  #define SAM4CMS_DB                 72  //!< SAM4CMS demo board.
  #define ATPL230AMB                 73  //!< ATPL230AMB board.
  #define SAMD11_XPLAINED_PRO        74  //!< SAM D11 Xplained Pro board.
  #define SAMG55_XPLAINED_PRO        75  //!< SAMG55 Xplained Pro board.
  #define SAML21_XPLAINED_PRO        76  //!< SAM L21 Xplained Pro board.
  #define SIMULATOR_XMEGA_A1         97  //!< Simulator for XMEGA A1 devices
  #define AVR_SIMULATOR_UC3          98  //!< Simulator for the AVR UC3 device family.
  #define USER_BOARD                 99  //!< User-reserved board (if any).
  #define DUMMY_BOARD               100  //!< Dummy board to support board-independent applications (e.g. bootloader)
  //! @}
  
  /*! \name Extension Boards
   */
  //! @{
  #define EXT1102                      1  //!< AT32UC3B EXT1102 board
  #define MC300                        2  //!< AT32UC3 MC300 board
  #define SENSORS_XPLAINED_INERTIAL_1  3  //!< Xplained inertial sensor board 1
  #define SENSORS_XPLAINED_INERTIAL_2  4  //!< Xplained inertial sensor board 2
  #define SENSORS_XPLAINED_PRESSURE_1  5  //!< Xplained pressure sensor board
  #define SENSORS_XPLAINED_LIGHTPROX_1 6  //!< Xplained light & proximity sensor board
  #define SENSORS_XPLAINED_INERTIAL_A1 7  //!< Xplained inertial sensor board "A"
  #define RZ600_AT86RF231              8  //!< AT86RF231 RF board in RZ600
  #define RZ600_AT86RF230B             9  //!< AT86RF230B RF board in RZ600
  #define RZ600_AT86RF212             10  //!< AT86RF212 RF board in RZ600
  #define SENSORS_XPLAINED_BREADBOARD 11  //!< Xplained sensor development breadboard
  #define SECURITY_XPLAINED           12  //!< Xplained ATSHA204 board
  #define USER_EXT_BOARD              99  //!< User-reserved extension board (if any).
  //! @}
  
  #if BOARD == EVK1100
  #  include "evk1100/evk1100.h"
  #elif BOARD == EVK1101
  #  include "evk1101/evk1101.h"
  #elif BOARD == UC3C_EK
  #  include "uc3c_ek/uc3c_ek.h"
  #elif BOARD == EVK1104
  #  include "evk1104/evk1104.h"
  #elif BOARD == EVK1105
  #  include "evk1105/evk1105.h"
  #elif BOARD == STK600_RCUC3L0
  #  include "stk600/rcuc3l0/stk600_rcuc3l0.h"
  #elif BOARD == UC3L_EK
  #  include "uc3l_ek/uc3l_ek.h"
  #elif BOARD == STK600_RCUC3L4
  #  include "stk600/rcuc3l4/stk600_rcuc3l4.h"
  #elif BOARD == XPLAIN
  #  include "xplain/xplain.h"
  #elif BOARD == STK600_MEGA
  /*No header-file to include*/
  #elif BOARD == STK600_MEGA_RF
  #  include "stk600.h"
  #elif BOARD == ATMEGA256RFR2_XPLAINED_PRO
  #  include "atmega256rfr2_xplained_pro/atmega256rfr2_xplained_pro.h"
  #elif BOARD == ATMEGA256RFR2_ZIGBIT
  #  include "atmega256rfr2_zigbit/atmega256rfr2_zigbit.h"
  #elif BOARD == STK600_RC032X
  #  include "stk600/rc032x/stk600_rc032x.h"
  #elif BOARD == STK600_RC044X
  #  include "stk600/rc044x/stk600_rc044x.h"
  #elif BOARD == STK600_RC064X
  #  include "stk600/rc064x/stk600_rc064x.h"
  #elif BOARD == STK600_RC100X
  #  include "stk600/rc100x/stk600_rc100x.h"
  #elif BOARD == UC3_A3_XPLAINED
  #  include "uc3_a3_xplained/uc3_a3_xplained.h"
  #elif BOARD == UC3_L0_XPLAINED
  #  include "uc3_l0_xplained/uc3_l0_xplained.h"
  #elif BOARD == STK600_RCUC3B0
  #  include "stk600/rcuc3b0/stk600_rcuc3b0.h"
  #elif BOARD == STK600_RCUC3D
  #  include "stk600/rcuc3d/stk600_rcuc3d.h"
  #elif BOARD == STK600_RCUC3C0
  #  include "stk600/rcuc3c0/stk600_rcuc3c0.h"
  #elif BOARD == SAMG53_XPLAINED_PRO
  #  include "samg53_xplained_pro/samg53_xplained_pro.h"
  #elif BOARD == SAMG55_XPLAINED_PRO
  #  include "samg55_xplained_pro/samg55_xplained_pro.h"
  #elif BOARD == XMEGA_B1_XPLAINED
  #  include "xmega_b1_xplained/xmega_b1_xplained.h"
  #elif BOARD == STK600_RC064X_LCDX
  #  include "stk600/rc064x_lcdx/stk600_rc064x_lcdx.h"
  #elif BOARD == STK600_RC100X_LCDX
  #  include "stk600/rc100x_lcdx/stk600_rc100x_lcdx.h"
  #elif BOARD == XMEGA_A1_XPLAINED
  #  include "xmega_a1_xplained/xmega_a1_xplained.h"
  #elif BOARD == XMEGA_A1U_XPLAINED_PRO
  #  include "xmega_a1u_xplained_pro/xmega_a1u_xplained_pro.h"
  #elif BOARD == UC3_L0_XPLAINED_BC
  #  include "uc3_l0_xplained_bc/uc3_l0_xplained_bc.h"
  #elif BOARD == SAM3S_EK
  #  include "sam3s_ek/sam3s_ek.h"
  #  include "system_sam3s.h"
  #elif BOARD == SAM3S_EK2
  #  include "sam3s_ek2/sam3s_ek2.h"
  #  include "system_sam3sd8.h"
  #elif BOARD == SAM3U_EK
  #  include "sam3u_ek/sam3u_ek.h"
  #  include "system_sam3u.h"
  #elif BOARD == SAM3X_EK
  #  include "sam3x_ek/sam3x_ek.h"
  #  include "system_sam3x.h"
  #elif BOARD == SAM3N_EK
  #  include "sam3n_ek/sam3n_ek.h"
  #  include "system_sam3n.h"
  #elif BOARD == SAM4S_EK
  #  include "sam4s_ek/sam4s_ek.h"
  #  include "system_sam4s.h"
  #elif BOARD == SAM4S_WPIR_RD
  #  include "sam4s_wpir_rd/sam4s_wpir_rd.h"
  #  include "system_sam4s.h"
  #elif BOARD == SAM4S_XPLAINED
  #  include "sam4s_xplained/sam4s_xplained.h"
  #  include "system_sam4s.h"
  #elif BOARD == SAM4S_EK2
  #  include "sam4s_ek2/sam4s_ek2.h"
  #  include "system_sam4s.h"
  #elif BOARD == MEGA_1284P_XPLAINED
  /*No header-file to include*/
  #elif BOARD == ARDUINO_DUE_X
  #  include "arduino_due_x/arduino_due_x.h"
  #  include "system_sam3x.h"
  #elif BOARD == SAM4L_EK
  #  include "sam4l_ek/sam4l_ek.h"
  #elif BOARD == SAM4E_EK
  #  include "sam4e_ek/sam4e_ek.h"
  #elif BOARD == SAMD20_XPLAINED_PRO
  #  include "samd20_xplained_pro/samd20_xplained_pro.h"
  #elif BOARD == SAMD21_XPLAINED_PRO
  #  include "samd21_xplained_pro/samd21_xplained_pro.h"
  #elif BOARD == SAMR21_XPLAINED_PRO
  #  include "samr21_xplained_pro/samr21_xplained_pro.h"
  #elif BOARD == SAMD11_XPLAINED_PRO
  #  include "samd11_xplained_pro/samd11_xplained_pro.h"
  #elif BOARD == SAML21_XPLAINED_PRO
  #  include "saml21_xplained_pro/saml21_xplained_pro.h"
  #elif BOARD == SAM4N_XPLAINED_PRO
  #  include "sam4n_xplained_pro/sam4n_xplained_pro.h"
  #elif BOARD == MEGA1284P_XPLAINED_BC
  #  include "mega1284p_xplained_bc/mega1284p_xplained_bc.h"
  #elif BOARD == UC3_L0_QT600
  #  include "uc3_l0_qt600/uc3_l0_qt600.h"
  #elif BOARD == XMEGA_A3BU_XPLAINED
  #  include "xmega_a3bu_xplained/xmega_a3bu_xplained.h"
  #elif BOARD == XMEGA_E5_XPLAINED
  #  include "xmega_e5_xplained/xmega_e5_xplained.h"
  #elif BOARD == UC3B_BOARD_CONTROLLER
  #  include "uc3b_board_controller/uc3b_board_controller.h"
  #elif BOARD == RZ600
  #  include "rz600/rz600.h"
  #elif BOARD == STK600_RCUC3A0
  #  include "stk600/rcuc3a0/stk600_rcuc3a0.h"
  #elif BOARD == ATXMEGA128A1_QT600
  #  include "atxmega128a1_qt600/atxmega128a1_qt600.h"
  #elif BOARD == STK600_RCUC3L3
  #  include "stk600/rcuc3l3/stk600_rcuc3l3.h"
  #elif BOARD == SAM4S_XPLAINED_PRO
  #  include "sam4s_xplained_pro/sam4s_xplained_pro.h"
  #elif BOARD == SAM4L_XPLAINED_PRO
  #  include "sam4l_xplained_pro/sam4l_xplained_pro.h"
  #elif BOARD == SAM4L8_XPLAINED_PRO
  #  include "sam4l8_xplained_pro/sam4l8_xplained_pro.h"
  #elif BOARD == SAM4C_EK
  #  include "sam4c_ek/sam4c_ek.h"
  #elif BOARD == SAM4CMP_DB
  #  include "sam4cmp_db/sam4cmp_db.h"
  #elif BOARD == SAM4CMS_DB
  #  include "sam4cms_db/sam4cms_db.h"
  #elif BOARD == SAM4CP16BMB
  #  include "sam4cp16bmb/sam4cp16bmb.h"
  #elif BOARD == ATPL230AMB
  #  include "atpl230amb/atpl230amb.h"
  #elif BOARD == SIMULATOR_XMEGA_A1
  #  include "simulator/xmega_a1/simulator_xmega_a1.h"
  #elif BOARD == XMEGA_C3_XPLAINED
  #  include "xmega_c3_xplained/xmega_c3_xplained.h"
  #elif BOARD == XMEGA_RF233_ZIGBIT
  #  include "xmega_rf233_zigbit/xmega_rf233_zigbit.h"
  #elif BOARD == XMEGA_A3_REB_CBB
  #  include "xmega_a3_reb_cbb/xmega_a3_reb_cbb.h"
  #elif BOARD == ATMEGARFX_RCB
  #  include "atmegarfx_rcb/atmegarfx_rcb.h"
  #elif BOARD == RCB256RFR2_XPRO
  #  include "atmega256rfr2_rcb_xpro/atmega256rfr2_rcb_xpro.h"
  #elif BOARD == XMEGA_RF212B_ZIGBIT
  #  include "xmega_rf212b_zigbit/xmega_rf212b_zigbit.h"
  #elif BOARD == SAM4E_XPLAINED_PRO
  #  include "sam4e_xplained_pro/sam4e_xplained_pro.h"
  #elif BOARD == AVR_SIMULATOR_UC3
  #  include "avr_simulator_uc3/avr_simulator_uc3.h"
  #elif BOARD == USER_BOARD
  // User-reserved area: #include the header file of your board here (if any).
  #  include "user_board.h"
  #elif BOARD == DUMMY_BOARD
  #  include "dummy/dummy_board.h"
  #else
  #  error No known Atmel board defined
  #endif
  
  #if (defined EXT_BOARD)
  #  if EXT_BOARD == MC300
  #    include "mc300/mc300.h"
  #  elif (EXT_BOARD == SENSORS_XPLAINED_INERTIAL_1)  || \
          (EXT_BOARD == SENSORS_XPLAINED_INERTIAL_2)  || \
          (EXT_BOARD == SENSORS_XPLAINED_INERTIAL_A1) || \
          (EXT_BOARD == SENSORS_XPLAINED_PRESSURE_1)  || \
          (EXT_BOARD == SENSORS_XPLAINED_LIGHTPROX_1) || \
          (EXT_BOARD == SENSORS_XPLAINED_BREADBOARD)
  #    include "sensors_xplained/sensors_xplained.h"
  #  elif EXT_BOARD == RZ600_AT86RF231
  #     include "at86rf231/at86rf231.h"
  #  elif EXT_BOARD == RZ600_AT86RF230B
  #    include "at86rf230b/at86rf230b.h"
  #  elif EXT_BOARD == RZ600_AT86RF212
  #    include "at86rf212/at86rf212.h"
  #  elif EXT_BOARD == SECURITY_XPLAINED
  #    include "security_xplained.h"
  #  elif EXT_BOARD == USER_EXT_BOARD
  // User-reserved area: #include the header file of your extension board here
  // (if any).
  #  endif
  #endif
  
  
  #if (defined(__GNUC__) && defined(__AVR32__)) || (defined(__ICCAVR32__) || defined(__AAVR32__))
  #ifdef __AVR32_ABI_COMPILER__ // Automatically defined when compiling for AVR32, not when assembling.
  
  /*! \brief This function initializes the board target resources
   *
   * This function should be called to ensure proper initialization of the target
   * board hardware connected to the part.
   */
  extern void board_init(void);
  
  #endif  // #ifdef __AVR32_ABI_COMPILER__
  #else
  /*! \brief This function initializes the board target resources
   *
   * This function should be called to ensure proper initialization of the target
   * board hardware connected to the part.
   */
  extern void board_init(void);
  #endif
  
  
  #ifdef __cplusplus
  }
  #endif
  
  /**
   * \}
   */
  
  #endif  // _BOARD_H_
  