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RIOT/boards/arduino-common/include/board.h 2.12 KB
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  /*
   * Copyright (C) 2014 Freie Universitรคt Berlin, Hinnerk van Bruinehsen
   *               2016 Laurent Navet <laurent.navet@gmail.com>
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @defgroup    boards_arduino-common Arduino common
   * @ingroup     boards
   * @brief       Board specific files for the arduino Uno and
   * @brief       Duemilanove boards.
   * @{
   *
   * @file
   * @brief       Board specific definitions for the arduino Uno and
   * @brief       Duemilanove boards.
   *
   * @author      Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
   * @author      Laurent Navet <laurent.navet@gmail.com>
   */
  
  #ifndef BOARD_H_
  #define BOARD_H_
  
  #include "cpu.h"
  #include "arduino_pinmap.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /**
   * @brief As the CPU is too slow to handle 115200 baud, we set the default
   *        baudrate to 9600 for this board
   * @{
   */
  #define UART_STDIO_BAUDRATE (9600U)
  /** @} */
  
  /**
   * @brief   LED pin definitions and handlers
   * @{
   */
  #define LED0_PIN            GPIO_PIN(1, 5)
  
  #define LED0_MASK           (1 << DDB5)
  
  #define LED0_ON             (PORTB |=  LED0_MASK)
  #define LED0_OFF            (PORTB &= ~LED0_MASK)
  #define LED0_TOGGLE         (PORTB ^=  LED0_MASK)
  /** @} */
  
  /**
   ** Context swap defines
   ** Setup to use PJ6 which is pin change interrupt 15 (PCINT15)
   ** This emulates a software triggered interrupt
   ***/
  #define AVR_CONTEXT_SWAP_INIT do { \
              DDRC |= (1 << PC6); \
              PCICR |= (1 << PCIE1); \
              PCMSK1 |= (1 << PCINT14); \
  } while (0)
  #define AVR_CONTEXT_SWAP_INTERRUPT_VECT  PCINT1_vect
  #define AVR_CONTEXT_SWAP_TRIGGER   PORTC ^= (1 << PC6)
  
  
  /**
   * @brief xtimer configuration values
   * @{
   */
  #define XTIMER_WIDTH                (16)
  #define XTIMER_SHIFT                (2)
  #define XTIMER_HZ                   (250000UL)
  #define XTIMER_BACKOFF              (40)
  /** @} */
  
  /**
   * @brief Initialize board specific hardware, including clock, LEDs and std-IO
   */
  void board_init(void);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* BOARD_H_ */
  /** @} */